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E
SERVICE BULLETIN ENGINE — HIGH PRESSURE TURBINE (HPT) — REMOVAL OF THE HPT STATOR CASE
FROM SERVICE
MODEL APPLICATION GP7270, GP7272, GP7277
BULLETIN ISSUE SEQUENCE EAGP7 Series 72-399
ATA NUMBER 72-51-30 ENGINE ALLIANCE, LLC. PROPRIETARY INFORMATION The information contained in this document is Engine Alliance, LLC (“EA”) Proprietary Information and is disclosed in con fidence. It is the property of EA and shall not be used, disclosed to others or reproduced for any purpose, including, without limitation, to design, manufacture or repair parts or to obtain FAA or other government approval to do so, without the express written consent of EA. Neither receipt nor possession of this document alone, from any source, constitutes such permission. Unauthorized possession, use, copying or disclosure may result in criminal and/or civil liability. If consent is given for reproduction in whole or in part, this notice and the notice set forth on each page of this document shall appear in any such reproduction in whole or in part.
This technical data is considered subject to the Ex port Administration Regulations (EAR) pursuant to 15 CFR Parts 730-774 respectively. Transfer of this data by any means to a Non-US Person, whether in the United States or abroad, without the proper U.S. Government authorization (i.e.
export license, license exception, NLR), is strictly prohibited.
EAR Export Classi fication: ECCN 9E991 Compliance Category 2 EA Distribution Code 2686 June 04/18 EAGP7-72-399 P a g e1o f 7
E Summary The purpose of this Service Bulletin is to remove from service the HPT stator case PN 2060M40G02 or PN 2137M29G01 that has reduced material capability in general areas.
PLANNING INFORMATION Effectivity Data Engine Models Applicable GP7270, GP7272, GP7277 Engine Serial Nos. — Engines that have an HPT stator case PN 2060M40G02* or PN 2137M29G01 with one of the serial numbers listed in T able 1 below:
Serial Number Serial Number Serial Number FDBF6879 FDBG5395 FDBG9124 FDBG0248 FDBG5526 FDBG9848 FDBG1088 FDBG5861 FDBG9922 FDBG2326 FDBG6774 FDBK0012 FDBG3216 FDBG9058 -- *If Service Bulletin No. EAGP7-72-348, Reference 4 has been complied with, the part number may have been changed to PN 2137M29G01.
NOTE: The engine serial number effectivity data and its related engine model identification contained in this Service Bulletin are taken from the records of the part(s) incorporation during initial manufacture.
Concurrent Requirements There are no concurrent requirements.
Reason
1. Problem:
The affected HPT stator cases have been identi fied with a reduced material capability at an unspeci fied location. This condition may not allow the part to reach the ultimate life objective of the HPT stator case.
2. Cause:
The area of the reduced material capability reduces the fatigue life of the HPT stator case.
3. Solution:
Remove and replace the affected HPT stator cases.
June 04/18 EAGP7-72-399 Page 2
ENGINE ALLIANCE, LLC PROPRIETARY INFORMATION Subject to the restrictions on the cover or first page.
E Description Remove and replace the affected HPT stator cases.
This recommendation is to address a condition that may affect Flight Safety.
Compliance Category 2 EA recommends you do this Service Bulletin as soon as possible based on the current HPT stator case's part cycles since new (PCSN) or part cycles since overhaul (PCSO), whichever is lower, but without effect on revenue service per the following criteria:
– For HPT stator cases with PCSN or PCSO between 0 to 1,000 cycles, remove the HPT stator case in the next 150 cycles.
– For HPT stator cases with PCSN or PCSO between 1,001 to 2,000 cycles, remove the HPT stator case in the next 125 cycles.
– For HPT stator cases with PCSN or PCSO between 2,001 to 3,000 cycles, remove the HPT stator case in the 100 cycles.
– For HPT stator cases with PCSN or PCSO between 3,001 to 4,000 cycles, remove the HPT stator case in the next 75 cycles.
– For HPT stator cases with PCSN or PCSO between 4,001 to 5,000 cycles, remove the HPT stator case in the next 50 cycles.
– For HPT stator cases with PCSN or PCSO with more than 5,001 cycles, remove the HPT stator case in the next 25 cycles.
NOTE: For this Service Bulletin, an HPT stator case that has had a piece-part inspection, as speci fied in the Cleaning, Inspection, and Repair (CIR) Manual, Chapter/Section 72-51-31, INSPECTION/CHECK-02, Reference 3, can use the cycles since that inspection as PCSO.
Approval Data The part number changes and/or part changes speci fied in the Material Information section and Accomplishment Instructions of this Service Bulletin agree with the applicable Federal Aviation Regulations and are FAA-Approved for the engine model(s) given.
The aircraft TC holder has been informed of this change.
Manpower No more man-hours are necessary when done at complete disassembly/assembly.
Weight Data No change.
June 04/18 EAGP7-72-399 Page 3
ENGINE ALLIANCE, LLC PROPRIETARY INFORMATION Subject to the restrictio ns on the cover or first page.
E Electrical Load Data Not applicable.
Software Accomplishment Summary Not applicable.
References
1. GP7000 Series, Illustrated Parts Catalog, Part No. 5700308.
2. GP7000 Series, Engine Manual, Part No. 5700147.
3. GP7000 Series, Engine Cleaning, Inspection, and Repair (CIR) Manual, Part No. 5700309.
4. Service Bulletin No. EAGP7-72-348; ENGINE ― HIGH PRESSURE TURBINE (HPT) ― HPT STATOR CASE NEW PART NUMBER AND FIELD REIDENTIFICATION.
Publications Changed Not applicable.
Interchangeability Not applicable.
Information in the Appendix Alternate Accomplishment Instructions (No) Progression Charts (No) Added Data (Yes) Revision to T able of Limits (No) Inspection Procedures (No) June 04/18 EAGP7-72-399 Page 4
ENGINE ALLIANCE, LLC PROPRIETARY INFORMATION Subject to the restrictions on the cover or first page.
E
MATERIAL INFORMATION Material — Cost and Availability
1. The estimated price of new material to do this Service Bulletin using new replacement part is $339,400.00.
2. There is no kit provided to do this Service Bulletin.
3. Part availability information is provided in material data Instructions — Disposition.
Industry Support Program Contact your Customer Support Manager.
The material data that follows is for each engine.
NOTE: It is possible to use the Chapter/Section and Figure/Item reference number shown below the old part number to find the part in the Illustrated Parts Catalog.
Because there are many different con figurations used, it is frequently necessary to show more than one group of parts. When this occurs, parts that are interchangeable are shown line-by-line only, unless this is shown differently.
CAUTION: THE FOLLOWING MATERIAL DATA TABLE(S) ARE ORGANIZED BY ILLUSTRATED PARTS CATALOG. ALL PARTS IN THE TABLE(S) MAY
OR MAY NOT BE APPLICABLE TO ALL THE ENGINE MODELS SHOWN IN THE TABLE HEADING. YOU MUST REFER TO THE APPROPRIATE
ILLUSTRATED PARTS CATALOG FOR ENGINE MODEL APPLICABILITY
USING THE OLD PART NUMBER (PN) AND CATALOG SEQUENCE NUMBER. FAILURE TO INSTALL THE PART(S) IN THE CORRECT
ENGINE MODEL MAY RESULT IN A CONFIGURATION THAT IS NOT FAA APPROVED.
The material data that follows is for each engine.
For GP7270, GP7272, GP7277 Engines:
New PN Qty Estimate of Unit Price ($) Keyword Old PN Instructions Disposition The following part may be needed when accomplishing this Service Bulletin:
-- 1 339,400.00 CASE — HPT STATOR 2060M40G02 (72-51-30-1-10)
(6)(E) Modification and Spares Information Parts Modi fication Conditions – (6) The old and new part numbers are the same.
Spare Parts Availability June 04/18 EAGP7-72-399 Page 5
ENGINE ALLIANCE, LLC PROPRIETARY INFORMATION Subject to the restrictio ns on the cover or first page.
E – (E) The old part is an expendable item necessary to do this bulletin.
Material Data for Each Spare Engine Not applicable.
Reidentified Parts Not applicable.
Necessary Tools No more Support Equipment is necessary.
Other Material Information Data Not applicable.
June 04/18 EAGP7-72-399 Page 6
ENGINE ALLIANCE, LLC PROPRIETARY INFORMATION Subject to the restrictions on the cover or first page.
E
ACCOMPLISHMENT INSTRUCTIONS General
1. Remove and replace the affected HPT stator case as speci fied in the Engine Manual, Chapter/Section 72-51-3 0, DISASSEMBLY-03, Reference 2.
Removal instructions have not changed.
NOTE: The removed HPT stator case can be held/stored for a future potential corrective action rework, modi fication, or inspection.
2. Install a new or serviceable HPT stator case into the engine as speci fied in the Engine Manual, Chapter/Section 72-51-30, ASSEMBLY-01, Reference 2.
Installation instructions have not changed.
3. T ell EA through GE Aviation Fleet Support that the affected HPT stator case was removed:
GE Aviation Fleet Support T oll Free Phone: 1-877-432-3272 Phone: (513) 552-3272 Fax: 1-877-432-3329 E-mail: aviation. fleetsupport@ge.com Web Site: https://www.geaviation.com/support A. Include the HPT stator case part number, serial number, part time, cycles since new (CSN), and date of removal.
ADDED DATA Internal Reference Information Revision No. ReferenceDocument Origination Original EPEX: 76148 EAW Original QEM: 58714-18-101 EAW June 04/18 EAGP7-72-399 Page 7
ENGINE ALLIANCE, LLC PROPRIETARY INFORMATION Subject to the restrictio ns on the cover or first page.