7588561GF New FAA PMA

FAA PMA Part Number:

7588561GF

HYDRAULIC FILTER

ENGINEERING DATA PACKAGE

PMA Replacement for OEM Part Number 7588561GF
Eligibility A Boeing Hydraulic filter eligible on Boeing
(see attached un-numbered PMA Supplement Aircraft 727, 727C, 727-100, -100C, -200, -200F
for details) series, 737-200, -300, -500, -600, -700, -800,-900
-900ER series

Global Filtration Inc. 4927 Cranswick Houston, TX 77041
Tel: 800.980.2525-x104, Fax: 713.856.9822

Engineering Data Package for 7588561GF  Continued

Contents

1. SCOPE............................................................................................................................................................ 4

2. PART FUNCTION ............................................................................................................................................ 4

3. STATEMENT OF NON-CRITICALITY ................................................................................................................. 4

4. FMEA............................................................................................................................................................. 4

5. ASSESSMENT OF ICA...................................................................................................................................... 4

6. SAFETY ASSESSMENT..................................................................................................................................... 4

7. MATERIAL TESTING ....................................................................................................................................... 5

8. DIMENSIONAL ............................................................................................................................................... 5

9. DESIGN CHANGE CONTROL............................................................................................................................ 6

10. NOTIFICATION COMMITMENT....................................................................................................................... 6

11. CONTINUED OPERATION SAFETY................................................................................................................... 6

12. PART MARKING ............................................................................................................................................. 6

13. INSTALLATION ELIGIBILITY............................................................................................................................. 6

14. SERVICE HISTORY REVIEW ............................................................................................................................. 7

15. SUMMARY..................................................................................................................................................... 7

16. APPENDIX...................................................................................................................................................... 7

16.1 PMA PACKAGE CHECKLIST............................................................................................................................TAB 1
16.2 FAA-PMA SUPPLEMENT/LETTER ..................................................................................................................TAB 2
16.3 INTRODUCTION/PARTS SUMMARY..................................................................................................................TAB 3
16.4 BACKGROUND OF VENDOR............................................................................................................................TAB 4
16.5 INDUSTRY EXPERIENCE .................................................................................................................................TAB 5
16.6 PART MARKING...........................................................................................................................................TAB 6
16.8 INSTALLATION ELIGIBILITY .............................................................................................................................TAB 7
16.9 SERVICE HISTORY REVIEW.............................................................................................................................TAB 8
16.10 COMPLIANCE WITH AIRWORTHINESS STANDARDS ..............................................................................................TAB 9
16.11 FAILURE MODE AND EFFECTS ANALYSIS...........................................................................................................TAB 10
16.12 OEM TRACABILITY ......................................................................................................................................TAB 11
16.13 COMPARATIVE TEST AND ANALYSIS................................................................................................................TAB 12
16.14 DESIGN METHODOLOGY ..............................................................................................................................TAB 13
16.15 DIMENSTIONAL ANALYSIS............................................................................................................................TAB 14
16.16 MATERIAL ANALYSIS ...................................................................................................................................TAB 15
16.16 PART DRAWING.........................................................................................................................................TAB 16

Global Filtration Inc. 4927 Cranswick Houston, TX 77041 Page 2 of 8
Tel: 800.980.2525-x104, Fax: 713.856.9822

Engineering Data Package for 7588561GF  Continued

16.16 DRAWING REVISION CHECKLIST.....................................................................................................................TAB 17
16.16 WEIGHT AND MASS PROPERTIES....................................................................................................................TAB 18
16.16 CONFORMITY INSPECTIONS .........................................................................................................................TAB 19
16.16 TEST SCOPE PLAN AND CERT. TEST RESULTS .....................................................................................................TAB 20
16.16 INSTRUCTIONS FOR CONTIINUED AIRWORTHINESS ............................................................................................TAB 21

Global Filtration Inc. 4927 Cranswick Houston, TX 77041 Page 3 of 8
Tel: 800.980.2525-x104, Fax: 713.856.9822

Engineering Data Package for 7588561GF  Continued

1. Scope

This engineering data package documents that Global Filtration, Inc. has complied with all the
applicable requirements, as identified in the certification basis of Test and Computations per 14
CFR 21.303(a)(4) and (5). This package and all attached documents that support our request for
approval are true and no false or misleading statements have been made (reference 14 CFR §
21.2).

2. Part Function

Global Filtration’s research of this part number has determines the element is non-flight critical
and an expendable part. The element separates and collects contaminants from the fluid, thus
prevent any contaminates from traveling downstream damaging the system. If the element was
to reach its capacity the system would go into by-pass mode allowing the fluid to still circulate
within the system.

3. Statement of Non-criticality

Global’s research has determined the Hydraulic Filter (P/N 7588561GF) is a non-safety significant,
expendable, non-critical part. When installed correctly, the Hydraulic Filter will perform as
intended.

4. FMEA

The element separates and collects contaminants from the fluid, thus prevent any debris
contaminates from traveling downstream damaging the system. If the element was to reach its
capacity the system would go into by-pass mode allowing the fluid to still circulate within the
system. Global is using a metal sintered media in lieu of the old fiberglass media. This will prove
to be highly more successful in capturing contaminates.

5. Assessment of ICA

A supplemental ICA is not required. The Hydraulic Filter will be maintained in accordance with the
Manufacturer’s and Airline’s IPC and maintenance manuals. The Hydraulic Filter is removed and
disposed of during normal maintenance cycles.

No further action required.

6. Safety Assessment

After performing a qualitative assessment, Global has determined that the Hydraulic Filter, as
stated in Assessment of ICA, above, is required to pass several installation, acceptance and quality

Global Filtration Inc. 4927 Cranswick Houston, TX 77041 Page 4 of 8
Tel: 800.980.2525-x104, Fax: 713.856.9822

Engineering Data Package for 7588561GF  Continued

inspections. These inspections ensure the quality and integrity of the installation. The Hydraulic
Filter is a non-safety significant, expendable, non-critical part. When the Hydraulic Filter is
installed correctly, it will perform as intended.

No further assessment is necessary.

7. Material Testing

To reverse engineer this part and establish its material characteristics, Global evaluated 2
examples of the OEM Hydraulic Filter (P/N: 7588561 / 1761291-01). Material testing was
performed using a Thermo Scientific Niton XL3t handheld x-ray fluorescence (XRF) analyzer or a

Multi-pass test rig, PM1044 to log dirt holding and efficiency capacity. The material test results
are recorded on either the top assembly drawing or the detail drawing. Further Multi-pass
testing was done by Porvair to determine the effectiveness of the media.

Filter Element Dirt Holding Dirt Holding Beta Ratio at Efficiency at
Capacity MIL- Capacity BMS3- 15um 15um
OEM 7588561 PRF-5606 11 Factored
PMA 7588561GF 36g to 70 psid 36g to 73.67 psid 311 99.865%
112g to 65 psid 112g to 67.36 745 99.678%
psid

Conclusion of Tests: There is a significant amount of dirt holding capacity in the

GF filter over the OEM unit. The clean differential pressure shows a high permeability of

the media being used by GF, thus more efficiency and better filter life.

8. Dimensional

Global evaluated 2 OEM samples to determine dimensions and tolerances for P/N 7588561GF.
 Each Hydraulic Filter was examined for workmanship and visible defects before
measurement.
 Each OEM sample is dimensionally inspected using a calibrated CMM or hand held
inspection tool. The dimensions are down loaded to IGS/CAD program (Auto Desk Master
Program). The machine shop then down loads the dimensions to the assigned machine.
Detail to top assembly drawings can be created.
 Dimensions were determined by averaging the range of dimensions acquired during
inspection.
 Tolerances were determined from applicable manufacturing and machinist practices.

Dimension Justification for tolerance range

Global Filtration Inc. 4927 Cranswick Houston, TX 77041 Page 5 of 8
Tel: 800.980.2525-x104, Fax: 713.856.9822

10.61” Engineering Data Package for 7588561GF  Continued
Ø1.39”
Overall length
Maintains the aliment of the element in the bowl preventing and
cavitation during fluid flow

Global used these findings to develop drawing P/N 7588561GF. The drawing appears in the
Appendix. The Global Filtration PN 7588561GF outperformed the OEM elements at the 4
through 30 micron levels.

9. Design Change Control

Global certifies that it has established and maintains a design change control system per
14 CFR § 21.307, Order 8110.42C, pg. 9 section (e) for manufacture of this part and CFR § 21.137.

10. Notification Commitment

Global will notify existing customers of:

 All drawing revisions – major and minor - prior to manufacture and distribution.
 Suspected unapproved parts, in-service difficulties, part failures, or production quality

failures.

11. Continued Operation Safety

Global certifies that it has established and maintains a Continued Operation Safety system within
our quality system per 14 CFR § 21.307, CFR § 21.137, and per Order 8110.42C, pg. 9 section (i) for
manufacture of this part. Global’s procedure addresses problem prevention, part monitoring and
problem response.

12. Part Marking

Global certifies that within our quality system, all parts will be marked in accordance with:
 The part number, designation FAA-PMA 7588561GF, Global Filtration, Inc.
 The name and model designation of each type of certified product on which the part is
eligible for installation
 Installation eligibility markings are no longer required on the article, but are still required
on the associated PMA supplement” according to AC 21.303-4, para. 29

13. Installation Eligibility

Installation eligibility was determined by:

Global Filtration Inc. 4927 Cranswick Houston, TX 77041 Page 6 of 8
Tel: 800.980.2525-x104, Fax: 713.856.9822

Engineering Data Package for 7588561GF  Continued

 FAA-PMA supplements showing approvals, IPC data

These documents are included in the Appendix.

14. Service History Review

Global took these steps to review the service history of OEM part number 7588561GF:
 Reviewed the FAA database for any pertinent Airworthiness Directives. No Airworthiness
Directives are applicable to the OEM part.
 Reviewed and researched available Service Bulletins and Service Difficulty Reports. No
Service Bulletins and Service Difficulty Reports are applicable to the OEM part.
 Interviewed personnel from MRO and airline maintenance facilities.

Global found no advisories or alerts in the past seven years. Interviews with personnel from MRO
and airline maintenance facilities support these findings.

No further assessment is necessary.

15. Summary

After tests, inspections, and a review of all data, Global has determined that this PMA part meets
or exceeds the form, fit and function of the OEM part.

16. Appendix

16.1 Application Letter

A copy of Global’s Application letter for P/N 7588561GF is attached.

16.2 Un-numbered FAA-PMA Supplement

A copy of Global’s un-numbered FAA-PMA supplement is attached.

16.3 IPC

For proof of Model Eligibility the relevant IPC’s are attached.

16.4 Material Specification

A copy of the Material Test Report is attached.

16.5 Type Certificate Data Sheet

Copies of the relevant Type Certificate Data Sheets are attached.

Global Filtration Inc. 4927 Cranswick Houston, TX 77041 Page 7 of 8
Tel: 800.980.2525-x104, Fax: 713.856.9822

Engineering Data Package for 7588561GF  Continued

16.6 Drawing 7588561GF

Global drawing 7588561GF is attached.

Drawing Revision List

Drawing Number Revision

MA0902411 0B

16.7 Technical Contact

Rick Caouette, President of Quality
Email: [email protected]

Global Filtration Inc. 4927 Cranswick Houston, TX 77041 Page 8 of 8
Tel: 800.980.2525-x104, Fax: 713.856.9822





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The following GHVFULSWLRQVDQGLQWURGXFWLRQV aUH part of this proposalIRUWKHHydraulic Filter with Metal Fiber
Media. Please review theseDQGUHDFKRXWWRXVLI\RXKDYH$1<TXHVWLRQV.

,QWURGXFWLRQ *OREDO)LOWUDWLRQ,QF$SSOLFDQW*)XQGHUD)$$30$3URMHFW1XPEHUFRPSOHWHGD30$
6FRSH SURJUDPIRUBoeing 727, 727C, 727-100, -100C, -200, -200F series, 737-200, -300, -400,
-500, -600,-700,-700C, -800, -900 series, 757-200 series. Approval was requested based
on Test and Computations per 14 CFR § 21.303(a) (4), (5). 7588561GF will replace OEM
part number 7588561 and Boeing PN 10-60593-12. 7KHRULJLQDOPDQXIDFWXUHUPTI and
Purolater)SDUWQXPEHUOLVWHGLQWKH$LUFUDIW0DLQWHQDQFH0DQXDO$00DQG,OOXVWUDWHG
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The filter pack is constructed from a sintered metal fibre filter media, which has a
consistent and graded pore structure supported by a square weave mesh
downstream. The filter pack is pleated to maximise its effective area, thus reducing
face velocity and enhancing contamination capacity.

The incumbent filter element is constructed similarly to that of the PFG design,
although the filter pack is constructed from a cellulose filter media. The filter support
structure has a fine mesh wrap from which the filtration efficiency is achieved with
the cellulose media capturing the larger particulate.

&RQFOXVLRQ :KHQFRPSDULQJWKHWZRILOWHUVWKHGlobal Filtration, Inc. / Porvair element
showed a significant amount of dirt holding capacity over the incumbant filter.
The clean differential pressure showed a high permability of the media being used
by Global Filtration/Porvair Filtration, thus more efficiency and better filter life.

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Global Filtration

Vendor Background
Global Filtration, Inc. products are shipped with 8130-3 Airworthiness tags or Certificate of Conformance documents.
Global Filtration is compliant with ISO 9000 specifications and approved under FAA 00-56A standards. All products are
factory new and/or fully traceable to an approved supply source for your complete satisfaction.
Global Filtration, Inc. was founded in 1995 to provide business aircraft flight departments with truly cost effective, high
quality, certified parts for corporate Fortune 500 clients, including Dassault Falcon Jet, DynCorp, General Electric,
General Dynamics, S.C. Johnson & Son, Boise Cascade, Hamilton Sundstrand, and many others.
Global Filtration expertise includes: FAA-PMA products that meet CFR 21.303, leading technology in product
development, and delivering hard-to-find products under contract. Global redesigned the process of
developing candidate PMA filtration products for all areas of aviation, including general business and
corporate flight departments, regional airlines, and light commercial airlines. This wealth of experience led to
the FAA approvals of over 75 new elements to help aviation businesses become more effective and efficient.

Global Filtration, Inc.

INDUSTRY EXPERIENCE

In business since 1995, Global Filtration currently has PMA approvals for several different aircraft
and applications. From P3 compressor air filter for PT6 engines to oil, fuel and hydraulic filters for
Canadair Regional Jets and Embraer Regional aircraft. We have a goal of producing 100 new PMA
filters in the next 2-3 years and have been approached by Boeing through a license agreement to
produce 30 filters to replace the PALL elements they currently use.
Global is working with Porvair© in Europe on a return filter module on the system A and B
Hydraulic systems for the 737 aircraft to reduce contamination. Utilizing a metal sintered media
we can reduce the failure of system components that are associated with contamination by 10
times. Through this media we can produce and maintain an NAS 1638 class cleanliness that will
save a tremendous amount of time and money for the operators. hƉŽŶĐŽŵƉůĞƚŝŽŶour
objectiveǁŝůů be to ŝŶƐƚĂůůƚŚĞŶĞǁĞůĞŵĞŶƚƐŽŶƚǁŽŽůĚĞƌĂŝƌĐƌĂĨƚĂŶĚƚǁŽŶĞǁĂŝƌĐƌĂĨƚĂŶĚ
ŝŶƐƚĂůůƉĂƌƚŝĐůĞĐŽƵŶƚĞƌƐŽŶƚŚĞĂŝƌĐƌĂĨƚ / or pull samples at regular intervalsƚŽĚĞƚĞƌŵŝŶĞƚŚĞ
ĂŵŽƵŶƚŽĨĚĞďƌŝƐĂŶĚĐŽŶƚĂŵŝŶĂƚŝŽŶƚŚĂƚŝƐďĞŝŶŐĞůŝŵŝŶĂƚĞĚďLJƚŚĞŶĞǁĨŝůƚĞƌƐ͘

Global ŚĂƐĂďŝŶŝƌ&ŝůƚĞƌƐ͕ŽŽůŝŶŐŝƌ&ŝůƚĞƌƐ͕>ĂǀĂƚŽƌLJŝƌ&ŝůƚĞƌƐĂŶĚ'ĂůůĞLJŝƌ&ŝůƚĞƌƐĨŽƌ
ŽĞŝŶŐĨůĞĞƚƐƵŶĚĞƌ&WDĂƉƉƌŽǀĂůƐ͘tĞŚĂǀĞůƵďĞĨŝůƚĞƌƐĨŽƌĐŽƌƉŽƌĂƚĞĂŶĚƌĞŐŝŽŶĂů
ĐŽŶĨŝŐƵƌĂƚŝŽŶƐ͕ŚLJĚƌĂƵůŝĐĨŝůƚĞƌƐĂŶĚĨƵĞůĨŝůƚĞƌƐĂƉƉƌŽǀĞĚ͘tĞĐŽŶƚŝŶƵĞƚŽĚĞǀĞůŽƉŶĞǁ&
WDƉƌŽĚƵĐƚƐĨŽƌƚŚĞĂŝƌůŝŶĞŝŶĚƵƐƚƌLJ͘

Global Filtration, Inc. 4
6115 Skyline, Houston, TX 77041
Tel 713.856.9800 Fax 713.856.9822

Global Filtration

Part Marking Requirements

Part Marking

Global certifies that within our quality system, all parts will be marked in accordance with
14CFR § 45.15, and Order 8110.42C.
Global certifies that within our quality system, all parts will be marked in accordance with:

 The letters “FAA-PMA”.
 The name Global Filtration, Inc.
 The part number
 Installation eligibility markings are no longer required on the article, but are still required

on the associated PMA supplement according to AC 21.303-4

FAR 45.15 Part Marking Requirements Part Label
YES NO YES NO
N/A N/A
Is the part marked in a way that does not compromise the X
airworthiness of the part? X
X
Comparative color photos clearly identifying the part and label X X
markings for the PMA and OEM part are included?
X
The part and label are both clearly marked FAA PMA? X X

The part and/or label are marked with the symbol or trademark of X N/A N/A
the PMA holder? X
X X
The PMA part number is clearly visible on both the part marking
and packaging label?

The part and/or label are clearly marked with the applicable
aircraft / engine model eligibility?

If the part is too small to mark, is the packaging clearly and N/A N/A
properly marked? (see note) – Mark “N/A” if this question does
not apply.

Is the part number marked on the OEM part? X

Global Filtration, Inc.









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14

Failure Mode and Effects Analysis - 7588561GF Failure Corrective Effect on Severity Remarks
Effects on System Indication Action by Aircraft Class
Item Failure Crew THE NORMAL
Item Item Description Function Modes INSPECTION
CYCLE AND
WILL NOT CAUSE REPLACEMENT
OF THE FILTER
HYDRAULIC INCREASED WILL MINIMIZE
SYSTEM CHANGES OF
FILTER, PARTIAL OR PRESSURE TO INDICATOR INSPECT OF THE FILTER
REMOVED COMPLETE OVERCOME THE BYPASS IF A CHANGE THE EVER
CONTAMINAT CLOG FILTER BECOMING
1 7588561GF ES FROM FILTER, AN THERE IS A FILTER 1 CLOGGED
HYD SYSTEM CLOGGING
INDICATOR WOULD PROBLEM

SIGNAL W/ TOTAL

MAINTENANCE OR CLOG

NO MAINTENANCE

REQUIRED

















Printed Date: 12/04/17

MTR5078 – Issue 2

PERFORMANCE EVALUATION ANALYSIS &
SIMILARITY REPORT FOR

BOEING 737 RETURN LINE FILTER
ELEMENT.

Porvair Filtration P/N MA0902411

Programme: Boeing 737

Prepared for: Global Filtration
Global Filtration P/N 7588561GF

Signature Date

Compiled by:

J Ayers
Applications Engineer, Aerospace
Engineering Approval:

A Cowan
Market Manager, Aerospace

World Class Filtration Solutions

MTR5078
Issue 2

Project Details Porvair Filtration Group Ltd.
Manufacturer: 1 Concorde Close
Segensworth
Subject item: Fareham
Prepared for: Hampshire
PO15 5RT
UK

Tel: +44 (0)1489 864330
Fax: +44 (0) 1489 864399
www.porvairfiltration.com

Boeing 737 Return Line Hydraulic Filter Element

Global Filtration

Page 2 of 24
Company Confidential.

© Copyright 2017. Porvair Filtration Group Ltd.

MTR5078
Issue 2

Table of Amendments

Issue Issue Amendment History Page Author
1 Date Number
2 April 2017 Initial Issue
All references to Global Filtration’s part number now - J.Ayers
April 2017 ‘‘7588561GF’
J. Ayers

Page 3 of 24
Company Confidential.

© Copyright 2017. Porvair Filtration Group Ltd.

MTR5078
Issue 2

Table of Contents

1 SCOPE....................................................................................................................................................... 6

2 SPECIFICATION ......................................................................................................................................... 6

3 APPLICABLE DOCUMENTS......................................................................................................................... 6

4 DESIGN OVERVIEW ................................................................................................................................... 6

4.1 PFG FILTER ELEMENT MA0902411............................................................................................................... 6
4.2 PTI FILTER ELEMENT 7588561...................................................................................................................... 7

5 MATERIAL COMPATABILITY ...................................................................................................................... 7

6 DETAILED DESIGN COMPARISON ............................................................................................................ 10

6.1 DIFFERENTIAL PRESSURE COMPARISON........................................................................................................... 11
6.2 DIFFERENTIAL PRESSURE CONDITIONS ............................................................................................................ 11
6.3 DIFFERENTIAL PRESSURE MA0902411 FLOW GEOMETRY ................................................................................. 11
6.4 DIFFERENTIAL PRESSURE SK0892 FLOW GEOMETRY ......................................................................................... 12
6.5 DIFFERENTIAL PRESSURE CALCULATION SUMMARY............................................................................................ 12

7 TEST, ANALYSIS AND SIMILARITY SUMMARY.......................................................................................... 12

8 TEST CONDITIONS................................................................................................................................... 12

8.1 STANDARD TEST CONDITIONS....................................................................................................................... 12
8.2 GENERAL TEST CONDITIONS ......................................................................................................................... 12

8.2.1 Ambient Conditions ....................................................................................................................... 12
8.2.2 Test Medium.................................................................................................................................. 12
8.2.3 Test Fluid Temperature ................................................................................................................. 13
8.2.4 Tolerance of Test Conditions ......................................................................................................... 13
8.2.5 Accuracy of Test Equipment .......................................................................................................... 13
8.3 DATA REQUIREMENTS................................................................................................................................. 13
8.3.1 Laboratory Data ............................................................................................................................ 13
8.3.2 Specific Data.................................................................................................................................. 13
8.3.3 Test Log ......................................................................................................................................... 13
8.4 INSPECTION AND TEST EQUIPMENT................................................................................................................ 14
8.4.1 Inspection Equipment.................................................................................................................... 14
8.4.2 Test Equipment.............................................................................................................................. 14
8.4.3 Calibration of Instrumentation...................................................................................................... 14

9 TEST PROCEDURE ................................................................................................................................... 14

9.1 DRY MASS................................................................................................................................................. 14
9.2 CLEAN DIFFERENTIAL PRESSURE ..................................................................................................................... 14

9.2.1 Test Procedure............................................................................................................................... 14
9.3 DIRT HOLDING CAPACITY & EFFICIENCY ........................................................................................................... 15
9.4 EQUIPMENT PREPARATION........................................................................................................................... 15
9.5 TEST PROCEDURE ....................................................................................................................................... 15

10 TEST RESULTS...................................................................................................................................... 15

10.1 DRY MASS................................................................................................................................................ 15
10.2 CLEAN FLOW DIFFERENTIAL PRESSURE............................................................................................................. 15

10.2.1 Clean pressure loss summary ........................................................................................................ 16
10.3 DIRT HOLDING CAPACITY AND EFFICIENCY........................................................................................................ 16

10.3.1 Dirt holding capacity and efficiency summary .............................................................................. 16

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10.3.2 Dirt holding capacity and efficiency discussion ............................................................................. 19
11 DIFFERENTIAL COLLAPSE ANALYSIS..................................................................................................... 19
12 CONCLUSION ...................................................................................................................................... 20

List of Figures

FIGURE 1 FILTER ELEMENT ASSEMBLY MA0902411.......................................................................................................... 7

FIGURE 2 FILTER ELEMENT ASSEMBLY SK0892 .............................................................................................................. 10

FIGURE 3 FILTER OUTLET GEOMETRY MA0902411 FIGURE 4 FILTER OUTLET GEOMETRY SK0892......................... 11

FIGURE 5 FILTER EFFICIENCY PLOTS ............................................................................................................................... 17

FIGURE 6 FILTER DHC PLOTS ....................................................................................................................................... 18

List of Tables

TABLE 1: MA0902411 MATERIALS AND PROCESSES REPORT.............................................................................................. 9
TABLE 2: TEST AND ANALYSIS PLAN............................................................................................................................... 12
TABLE 3: FLUID PROPERTY TABLE.................................................................................................................................. 14
TABLE 4: ISO MEDIUM A3 PARTICLE DISTRIBUTION ........................................................................................................ 15
TABLE 5: FLOW PRESSURE LOSS SUMMARY ................................................................................................................... 16
TABLE 6: DHC & EFFICIENCY SUMMARY........................................................................................................................ 16

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1 SCOPE

This report documents the analysis and testing that has been conducted on filter element
PFG part number (MA0902411) in comparison with filter element 7588561 to demonstrate
comparable performance when analysing the key performance requirements defined in
paragraph 2. This report will be read in conjunction with the tests performed on PFG test
filter SK0892, with testing defined by MTR5068.

The report will be used to support Global Filtrations application for parts manufacture
approval (PMA) 7588561GF.

2 SPECIFICATION

Filtration rating: 15µm Absolute (Beta 200 to ISO16889)
Temperature range: -65˚F to 275˚F
System fluid: Phosphate ester BMS3-11
Rated temperature: 100˚F
Rated flow: 43 U.S.G.P.M
Minimum element collapse pressure: 500 psid

The specification above has been derived from overhaul manual SCMM 7583695 for single
stage return filter assembly.

3 APPLICABLE DOCUMENTS

1. MA0902411 – PFG assembly drawing
2. MTR5061 – PFG Test element performance report
3. ISO16889 – Multipass evaluation method for filter elements
4. T5715 – PFG test memorandum
5. T5714 – PFG test memorandum
6. Development PFG Part number: SK0892
7. SCMM 7583695
8. AS4716 – Standard gland dimensions for O rings

4 DESIGN OVERVIEW

The following section details the key design characteristics of both mentioned filter elements,
detailing differences in design and construction.

4.1 PFG Filter Element MA0902411

MA0902411 will be constructed using sintered metal fibre filter media support by a stainless
steel support mesh downstream. A perforated support structure will provide support during
contamination loading and any induced axial load conditions.

The filter core and pack are encased using epoxy based resin, between two supporting end
caps. The open end cap will provide the primary interface with the filter housing, and shut off
valve. Refer figure 1 for filter element design overview.

The filter design features a cylindrical extension on the closed end cap which provides
location in the filter bowl. The filter element centralising lugs have been omitted on this
design; both of these design features have been taken from PMA1761291-01.

Analysis of the measured components shows that the seal groove is in accordance with
AS4716 size 214.

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NAS1611-214 MTR5078
O ring Seal Issue 2

Open end cap fitting

Open end Cap

Filter Support
Structure

Filter Pack – Comprising
SMF Media
Woven support mesh

Closed End Cap

Spacer

Figure 1 Filter Element Assembly MA0902411

4.2 PTI Filter Element 7588561

The incumbent filter element utilises a fibreglass filter pack, with a stainless steel mesh wrapped
around the internal support structure. The filter element has a lower spacer which is retained on the
closed end cap by means of a rivet. This filter element has been duly approved by the Federal
Aviation Authority (FAA).

5 MATERIAL COMPATABILITY

The materials and surface finishes selected by PFG for this application have been done so based on
proven aerospace pedigree. The following statements shall provide both justification and compliance
that the materials selected are suitable for use with BMS3-11 hydraulic fluid across the specified
temperature range. Refer also to table 1 (Materials and Processes Report). BMS 3-11 is defined as
Phosphate ester LD4.

M111597 – The Open end cap is constructed using L80 Aluminium, with all surfaces sulphuric
anodised purple in accordance with MIL-A-8625 type II class 2. The end cap will be fully submerged in
BMS 3-11 over the defined temperature range during operation, therefore no corrosion or other
deleterious degradation will occur.

M111598 – The Open end cap fitting is constructed from 6000 series Aluminium (specifically
6061/6082 T6/T6511 condition) with all surfaces sulphuric anodised in accordance with MIL-A-8625
type II class 1. The fitting will interface with the filter housing & shut off valve, whilst being fully

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MTR5078
Issue 2

submerged in BMS 3-11 over the defined temperature range during operation, therefore no corrosion
or other deleterious degradation will occur.
M111601 – The Filter core is constructed from austenitic (6082) L113-T6 Aluminium Alloy and is
anodised in accordance with MIL-A-8625 type II class 1. This grade of Aluminium has been proven in
Aerospace applications using BMS 3-11 hydraulic fluid and therefore no corrosion or other deleterious
degradation will occur over the defined temperature range.
M111600 - The Open end cap fitting is constructed from 6000 series Aluminium (specifically
6061/6082 T6/T6511 condition) with all surfaces sulphuric anodised in accordance with MIL-A-8625
type II class 2 colour purple. The end cap will be fully submerged in BMS 3-11 over the defined
temperature range during operation, therefore no corrosion or other deleterious degradation will occur.
M111602 – The filter pack is constructed of AISI 304L/316L stainless steel, this grade of steel has
been proven in Aerospace applications using BMS 3-11 hydraulic fluid and therefore no corrosion or
other deleterious degradation will occur over the defined temperature range.
P56001A - Uniset A304-6 has been used by PFG in numerous applications operating with BMS 3-11
hydraulic oil. These applications include Airbus A320 hydraulic thrust reverser system and the
Embraer 170/190 primary hydraulic system using skydrol LD-4. Refer also to appendix A for
certification that the chemical composition of the A304-6 epoxy is not affected by BMS 3-11 hydraulic
oil. PFG pedigree coupled with the attached data sheet demonstrates no deleterious degradation will
occur.
P56008A – Araldite 2011 has also been used by PFG in numerous applications operating with BMS 3-
11 hydraulic oil. PFG have used the above mentioned araldite in applications such as Trent 700
engine, constantly wetted in skydrol LD-4. Refer to appendix B for chemical data sheet. The attached
data sheet and PFG pedigree demonstrates no deleterious degradation will occur when exposed to
BMS 3-11 hydraulic oil.
NAS1611 – The National aerospace standard 1611 EPDM is specified for use with BMS 3-11, this
therefore is used within filter assembly MA0902411 and demonstrates no deleterious degradation will
occur when exposed to BMS 3-11 hydraulic oil over the defined temperature range.
The analysis presented above, combined with PFG in service pedigree, demonstrate that the
materials selected will perform satisfactorily when exposed to operation in phosphate ester BMS 3-11.

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PART NO. DESCRIPTION MATERIAL SP
M111597 Open end cap Aluminium Alloy

M111598 Open end fitting Aluminium Alloy 6061
M111601 Filter Core Aluminium Alloy 60

M111600 Closed End Cap Aluminium Alloy 6061

M111602 Filter Pack – Media Stainless Steel AI
M111602 Filter Pack – Support Stainless Steel AI

P56001A Mesh Epoxy based resin U
P56008A
NAS1611-214A Adhesive Epoxy based resin A

Adhesive E.P.D.M
O Ring Seal

Table 1: MA0902411 mater

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PECIFICATION FINISH SPECIFICATION
L80 (5251) Sulphuric Anodise
MIL-A-8625 Type II, Class 2
(Colour Purple)

1/6082 T6/T6511 Sulphuric Anodise MIL-A-8625 Type II, Class 1
082-T6 (L113) Sulphuric Anodise
MIL-A-8625 Type II, Class 1
1/6082 T6/T6511 Sulphuric Anodise
MIL-A-8625 Type II, Class 2
(Colour Purple)

ISI 304L/316L None
ISI 304L/316L None

Uniset A304-6 N/A

Araldite 2011 N/A
NAS1611 N/A

rials and processes report

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vair Filtration Group Ltd.

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6 DETAILED DESIGN COMPARISON

The following section details the design comparison between PFG design MA0902411 & the tested
design SK0892 defined in MTR5061.

The tested design SK0892 was designed to remove the additional extension feature on the end of the
element. Refer figure 2. The effective filtration area of the tested design is 0.948m^2 (10.2042 ft^2).
PFG design MA0902411 has an effective filtration area of 0.801m^2 (8.622 ft^2).

Due to the difference in pack areas, the results presented in this report will be factored based on the
small reduction in filtration area, this calculation is detailed below.

0.948
→ 0.801 1.184

Extension feature removed
for PFG testing

Figure 2 Filter Element Assembly SK0892

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6.1 Differential Pressure comparison

Test element SK0892 did not reflect the outlet geometry required to interface with the shut off valve as
defined by PFG design MA0902411, refer figures 2 & 3. This section will determine the predicted
pressure loss considering both geometries.

Figure 3 Filter outlet geometry MA0902411 Figure 4 Filter outlet geometry SK0892

6.2 Differential Pressure conditions

Volumetric Flow Rate → 162.8LPM → 0.0027188m^3/s
Specific gravity BMS 3-11 at 100°F → 0.99
H20 Reference density → 999.2Kg/m^3

3 11 999.2 0.99 989.208 /

Pressure loss K factors will be derived from a contraction from the internal support structure inside
diameter → 40.6mm to the outlet diameter defined by figures 3 & 4.

6.3 Differential Pressure MA0902411 flow geometry

%&' % (25.42 10* +' 5.0751 10*- '
!" #! $ → 4 240 10*1 '
. 4

/ !" → " 0 7.90 30.4

2$$ 3 $" 0 5.0751 10*- 240 10*1 0.268 10* '

25! 3 " / 6 4 0.268 10*
→ 78 % 9 0.0185

0.0027188
" 0 3 " : → 0.268 10* 10.145 /#

18.5'
/ / → ;1 840.6'9< 0.5 0.396

= ##! > ## → 989.208 10.145' 0.396 20.16 = (2.94?# &+

2

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6.4 Differential Pressure SK0892 flow geometry

!" #! $ %&' % (25.42 10* +' 5.0751 10*- '
→ 4 4

0.0027188
" 0 3 " : → 5.0751 10*- 5.36 /#

25.42'
/ / → ;1 8 40.6' 9< 0.5 0.304

= ##! > ## → 989.208 5.36' 0.304 4319= (0.63?# &+

2

6.5 Differential Pressure Calculation summary

The calculated pressure loss for both defined geometries shows there will be an increase due to the
feature required for the interface with the shut off valve, therefore the following ∆ (2.31psid) will be
added to the test results.

7 TEST, ANALYSIS AND SIMILARITY SUMMARY

The following table identifies the comparative tests and analysis performed on both PFG and the
incumbent filter element. This addresses the key specification requirements as detailed in paragraph
2. All tests performed are detailed in MTR5061 with the results represented factored per the
discussion in paragraphs 6 & 6.5.

Requirement Incumbent Filter PFG Filter element
Dry Mass element A

T

Clean Flow differential T T
pressure T T
Not Tested A
Dirt holding capacity

Differential collapse
pressure

Table 2: Test and analysis plan

8 TEST CONDITIONS

8.1 Standard Test Conditions
All test results, from tests carried out during testing, must be recorded on relevant test
sheets and attached to the qualification test results. The tests will be completed in a practical
sequence based upon availability to complete all testing in an expeditious manner.

8.2 General Test Conditions

8.2.1 Ambient Conditions
Unless otherwise specified in the detail test procedure, each test shall be conducted at a

room temperature of 25±5°C, a relative humidity of 20 to 80 percent and atmospheric
pressure dictated by normal local conditions.

8.2.2 Test Medium
Unless otherwise specified in the detail procedure, tests shall be conducted using MIL-PRF-
5606.

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8.2.3 Test Fluid Temperature
8.2.4 Unless otherwise specified in the detail procedure, all tests shall be conducted with the

hydraulic test fluid maintained at a temperature of 38±5°C (100 ±20°F). The actual
temperature shall be recorded throughout the test program for inclusion in the final test
report.

Tolerance of Test Conditions
Unless specifically noted otherwise in the detail test procedure, tolerance on test conditions
and instrumentation shall not be permitted to exceed the following parameters at any time
during the test program.

i. Time ±2 %

ii. Temperature ±2°C

iii. Gauge Pressure ±1 % of nominal value

iv. Flow ±3%

8.2.5 Accuracy of Test Equipment
Unless specifically noted otherwise in the detail test procedure, tolerance on test
8.3 instrumentation shall not be permitted to exceed the following parameters at any time during
8.3.1 the test program.

8.3.2 i. Temperature -55°C to 120°C ± 1.5°C
8.3.3 ii. Pressure
> 120°C ± 0.004(t)
± 1% of FSD for Ø6” Dial Gauges
± 0.25% of full range for transducers

Data Requirements

Laboratory Data
Laboratory test data shall be recorded on data sheets that shall include, as a minimum, the
general information noted as follows:

i. Test title and/or purpose.
ii. Test Procedure Reference
iii. Fluid type and temperature.
iv. Test Date.
v. Responsible development or test engineers name.
vi. Test unit part, issue and serial number.
vii. Laboratory test unit or station identification.

Specific Data
Specific data to be recorded shall be as specified for each test described within this
document. Test data shall be recorded on data sheets that are appropriately labelled to
indicate the nature of the data, and the units of measurement. The data sheets shall be clear
and legible to permit direct inclusion in the Qualification Test Report, along with photographs
taken during the test program.

Test Log
A chronological test log shall be maintained throughout the Qualification test program. The
following minimum information shall be included in the test log.

i. Build-up information sufficient to establish exact configuration of the test unit.
ii. Weight of the test unit.
iii. Day-by-day account of testing, including start and completion dates and time.
iv. Significant events noted during testing, such as out-of-tolerance operation of the unit.
v. Any deviation from the test procedures, and reason(s) for the deviation.
vi. Failures of test fixtures or test hardware, which may have impact on later operation of

the unit, e.g. replacement of gauge.

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vii. An account of all failures of the test unit during testing including the date,
circumstances of the failure, items affected, failure analysis, corrective action, repair
time, and extent of re-testing required.

viii. Any additional information, which may explain or amplify the verification test results.

8.4 Inspection and Test Equipment
All quantitative measurements shall be made with certified accurate instruments in current
calibration, and all instruments shall have a valid calibration tag attached.

8.4.1 Inspection Equipment
Standard bench and/or gauge equipment is adequate to perform mechanical inspection.

8.4.2 Test Equipment
Items of test equipment shall be selected from the PFG inventory as applicable, in the
appropriate range of measurement.

8.4.3 Calibration of Instrumentation
All instruments and apparatus used for the performance of tests described in this procedure
shall be calibrated at intervals sufficient to assure continued accuracy and repeatability of
recorded measurements. The equipment calibration system is maintained in accordance with
PFG Quality Procedure QP011, which meets the requirements of MIL-STD-45662.

9 TEST PROCEDURE

The following section of this report details the procedure for each mentioned test in table 2.

9.1 Dry mass

Using scales IT948 record dry mass of identified filter elements.

9.2 Clean differential pressure

9.2.1 Test Procedure

Assemble test block, filter element and seal using test seal NAS1611-214.

Connect high and low pressure ports to the MIL-PRF-5606 rig (PM1046) and bleed any entrapped air
from the system.

Stabilise the fluid temperature to 38°C (100°F). Flow test fluid at intervals of 5.0USGPM from 0-
50USGPM and record the clean differential pressure of the Filter Element Assembly.

The results of this test will be factored back to BMS 3-11for the density and viscosity difference, using
the following calculated factor:

Test Fluid H2O Reference Specific Density Kinematic Dynamic
Density @ 60°F gravity (Kg/m^3) viscosity (cst) Viscosity
MIL-PRF-5606
BMS 3-11 (Kg/m^3) 0.83 829.336 17 (Pa.s)
0.99 989.208 15
999.2 0.0141
999.2 0.0148

Table 3: Fluid property table

#. (>64+ 3(>64+ 0.99 15
#. (>64+ 3(5606+ 0.83 17 1.0524

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9.3 Dirt holding capacity & efficiency

This test will be used to demonstrate compliance with both the efficiency and dirt holding capacity
requirements defined in paragraph two. This test will be carried out in accordance with ISO16889.

9.4 Equipment Preparation
This test shall be carried out using MIL-PRF-5606 as the working fluid.

Connect the filter assembly to test rig PM1044. Fit particle counters immediately upstream
and downstream of the filter assembly.

Use a data logging system to continually record the differential pressure and oil temperature
throughout the test.

9.5 Test Procedure

With the flow rate at 100litres/min inject 10mg/l of ISO 12103 medium test dust with the
particle distribution shown in table 3.

Particle Size Count
Range (µm) (Volume Fraction)

1 1 to 2

2 4.0 to 5.5

3 7.5 to 9.5

4 10.5 to 13.0

5 15 to 19

7 28 to 33

10 40 to 45

20 65 to 69

40 84 to 88

80 99 to 100

120 100

Table 4: ISO Medium A3 particle distribution

10 TEST RESULTS

The following section provides the test results for the tests and analysis detailed in table 2. These
results have been derived from MTR5061 and factored where applicable.

10.1 Dry Mass

The dry mass of incumbent filter element 7588561 was measured at 590g (1.3007lbs). Refer to
appendix C for PFG mass analysis of MA0902411 (calculated mass of 1098g (2.43lbs).

10.2 Clean flow differential pressure

This test was performed to demonstrate a comparison between both filter elements when operating at
clean rated conditions.

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10.2.1 Clean pressure loss summary

Filter Element Pressure Loss – MIL-PRF- Pressure Loss – BMS3-11
5606 (Factored)
Incumbent 7588561
PFG (SK0892) 8.70psid 9.16psid

1.31psid 1.37psid

Table 5: Flow Pressure Loss Summary

The recorded 1.37psi differential pressure for test element SK0892 is factored per paragraphs 6 & 6.5
for a corrected differential pressure, refer below.

$ → 1.37 1.184 1.6221?# &

" 0 : $ → 1.6221 + 2.31 3.932?# &

10.3 Dirt holding capacity and efficiency

This test was conducted to demonstrate the dirt holding capacity performance when subjected to the
flow and contamination ingression specified in paragraph 9.3.

10.3.1 Dirt holding capacity and efficiency summary

The following table 6 identifies the dirt holding capacity and efficiency of both filter elements
considered within this report. The results have been factored per the definition in table 3.

Filter Element Dirt holding Dirt holding Beta ratio at Efficiency at
15 µm
Incumbent 7588561 capacity capacity 15µm
PFG (SK0892) 99.865%
MIL-PRF-5606 BMS3-11 99.678%

(Factored)

36g to 70psid 36g to 73.67psid 745

112g to 65psid 112g to 67.36psid 311

Table 6: DHC & Efficiency summary

These results are presented in figure 5.

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Figure 5 Filter e

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efficiency plots

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Figure 6 Filte

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