ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing

GE PROPRIETARY INFORMATION The information contained in this document is GE proprietary information and is disclosed in con fi dence. It is the property of GE and shall not be used, disclosed to others or reproduced without the express written consent of GE, including, but without limitation, it is not to be used in the creation, manufacture, development, or derivation of any repairs, modi fi cations, spare parts, designs, or con fi guration changes or to obtain FAA or any other government or regulatory approvalto do so. If consentis givenfor reproduction inwhole or inpart,this notice andthe 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 EAR controlled 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,withouttheproperU.S.Government authorization (e.g., License, exemption,NLR, etc.), is strictly prohibited.GEAE authorizes the Federal Aviation Administration to incorporate this document by reference in an Airworthiness Directive. Copyright (2011) GeneralElectric Company, U.S.A.

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 1 of 12ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing

1. P LA N N I N G I N F O R M A T I O N A. E f fe ct i v i ty CF6-80C2A1/A2/A3/A5/A5F/A8/B1/B1F/B2/B2F/B4/B4F/B5F/B6/B6F/B6FA/B7F/ B8F/D1F/K1F/L1F This Service Bulletin is applicable to all CF6-80C2 engines that have had the fan separated from the core prior to the release date of this Service Bulletin. The bearing No. 3 packing with retainer (No. 3 bearing packing) is affected by this Service Bulletin. B. D e s c r i p t i o n This Service Bulletin provides instructions for a once-through-the-fl eet incoming inspection during shop visit of the No. 3 bearing packing hole size. This will ensure life limited part (LLP) life has not been affected by operation with the wrong No. 3 bearing packing part number. Since the No. 3 bearing packing does not have a part number marked on it, the correct installation can only be veri fi ed by measuring the packing hole size. C. C o m p l i a n ce Category 4 GE recommends that you do this Service Bulletin when the fan is separated from the core. N O T E : This Service Bulletin can be accomplished in shop. This Service Bulletin is offered to improve the reliability or performance of your GE product, or to help prevent the occurrence of the event or condition described in this Service Bulletin. If the operator elects not to participate in the bulletin, that decision will be taken into consideration by GE in evaluating future product performance issues that may arise in the operator’s fl eet. D. C o n c u r re n t R e q u i re m e n ts None. E. R e a s o n (1) Objective: To improve reliability, to correct improper No. 3 bearing packing installation, and, if necessary, to remove parts from service. (2) Condition: Customers have reported instances in the installed fl eet where a No. 3 bearing packing with the wrong hole size has been installed during overhaul. The extent to which this condition ex ists varies by overhaul provider. June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 2 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing
The size of the holes in the No. 3 bearing packing meter the airfl ow into the LLP bore cooling circuit. Reductions or increases in this fl ow can impact LLP life. (3) Cause: Several overhaul providers have assembled engines with the wrong No. 3 bearing packing hole size for a given engine con fi guration. (4) Inspection: During disassembly and before the No. 3 bearing packing is discarded, the No. 3 bearing packing hole size should be measured to:



# . Identify which No. 3 bearing packing part number was installed by measuring the hole diameters.



# . Determine if the engine has operated with the wrong bore cooling airfl ow. (5) Substantiation: Substantiation is by analys is and by comparative analysis. F. A p p ro v a l This Service Bulletin has been reviewed by the FAA and the repair(s) and modi fi cation(s) herein comply with the applicable Federal Aviation Regulations and are FAA APPROVED for installation in the model(s) listed in this Service Bulletin. G. M a n p owe r No additional man-hours are required to comply with this Service Bulletin. H. We i g h t a n d B a l a n ce Weight and balance are not changed. I. R efe re n ce s (Use the latest version of these documents) GEK 92451, CF6-80C2 Engine Manual (EM) GEK 92452-1, CF6-80C2A (PMC) Illustrated Parts Catalog (IPC) GEK 92452-2, CF6-80C2B (PMC) Illustrated Parts Catalog (IPC) GEK 92452-3, CF6-80C2D (FADEC) Illustrated Parts Catalog (IPC) GEK 92452-4, CF6-80C2B (FADEC) Illustrated Parts Catalog (IPC) GEK 92452-5, CF6-80C2A (FADEC) Illustrated Parts Catalog (IPC) GEK 112213, CF6-80C2L1F Engine Manual (EM)

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 3 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing
GEK 112657, CF6-80C2L1F Illustrated Parts Catalog (IPC) GEK 112721, CF6-80C2K1F Engine Manual (EM) GEK 112722, CF6-80C2K1F Illustrated Parts Catalog (IPC) CF6-80C2 S/B 72-0204, ENGINE - Fan Module - 3R Gasko Seal Bore Cooling Reduction CF6-80C2 S/B 72-0266, ENGINE - Introduction of Bore Cooling Hardware for Improved Performance CF6-80C2 S/B 72-1385, ENGINE - Fan Module (72-00-01) - Inspection and Removal of Suspect No. 3 Bearing Packing CF6-80C2 S/B 75-0157, AIR - Bore Cooling Valves (72-00-01) - Elimination (Block II) CF6-80C2 S/B 75-0198, AIR - Bore Cooling Air System (72-00-01) - Elimination N O T E : The reference documents listed below are for the engine manufacturer's internal use only: AvEng-324657 AvEng-327928 AvEng-331373 AvEng-338051 AvEng-343052 BPP: 10-72-61-01 J. P u b l i ca t i o n s Af fe cte d None. K. I n te rc h a n g e a b i l i ty The No. 3 bearing packings listed in paragraph 2.A.(2) are NOT functionally interchangeable. Verify proper con fi guration per the Service Bulletins listed in paragraph 1.I., R e fe re n ce s
. L. S of tw a re Ac co m p l i s h m e n t S u m m a ry Not applicable. 2. M A T E R I A L I N F O R M A T I O N A. M a te r i a l

- P r i ce a n d A v a i l a b i l i ty (1) Parts necessary to do this Service Bulletin: None.

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 4 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing
(2) Other Spare Parts:

P a rt N u m b e r Q ty/ E n g P a rt N a m e U n i t ( $ ) P r i ce P kg Q ty L e a d T i m e D a ys 1292M70P01/P02 /P03 (1) Packing, (With Retainer) Bearing No. 3 484.50 (1) 5

1471M25P01/P02 /P03 (1) Packing, (With Retainer) Bearing No. 3 404.25 (1) 5
1471M25P04/P05 (1) Packing, (With Retainer) Bearing No. 3 397.50 (1) 5

CA U T I O N : PACKINGS ARE NOT INTERCHANGEABLE. REFER TO PARAGRAPH 1.K., I n te rc h a n g e a b i l i ty
. N O T E : Prices are provided for planning purposes and are subject to change. (3) Consumables: None. B. I n d u s t ry S u p p o rt I n f o r m a t i o n None. C. C o n fi g u ra t i o n C h a rt None. D. P a rts D i s p o s i t i o n Contact CF6 Engineering for parts disposition in accordance with paragraph 3., AC C O M P L I S H M E N T I N S T R U C T I O N S

. E. T o o l i n g - P r i ce a n d Ava i l a b i l i ty None. 3. A C C O M P L I S H M E N T I N S T R U C T I O N S A. R e m o v a l a n d I n s p e ct i o n of t h e N o
. 3 B e a r i n g P a c k i n g (1) Remove the No. 3 bearing packing when the fan is separated from the high pressure compressor (HPC). Refer to the CF6-80C2 EM, 72-23-00, DISASSEMBLY, Subtask 72-23-00-040-069.

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 5 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing
(a) Measure the No. 3 bearing packing hole E size and hole F size. Identify the No. 3 bearing packing color. Use this to determine what No. 3 bearing packing part number is installed. Refer to Figure 1. (b) Determine whether the No. 3 bearing packing installed is a "CORRECT FLOW", a "LOW FLOW", a "HIGH FLOW" or a "FLOW TBD" packing. Refer to Figure 2. 1 If the installed No. 3 bearing packing is a "CORRECT FLOW" packing, the correct air fl ow is provided by the part. Make sure the No. 3 bearing packing installed is the correct part number for the engine con fi guration. If so, this Service Bulletin has been complied with and no further action is needed. N O T E : Although the No. 3 bearing packings designated as "CORRECT FLOW" packings in Figure 2 supply the correct air fl ow to the secondary fl ow circuit, not all "CORRECT FLOW" packings are applicable in a given con fi guration. If a No. 3 bearing packing is not listed by a previous or future Service Bulletin as acceptable for a given con fi guration, then it must be replaced. 2 If the installed No. 3 bearing packing is not a "CORRECT FLOW" packing, determine how many cycles the engine operated with the incorrect No. 3 bearing packing and go to step 3.A.(2). (2) If a "LOW FLOW" packing is installed, do as follows: (a) If the engine has operated for less than 5,500 cycles since the installation, this Service Bulletin has been complied with. 1 Make a notation on the LLP permanent record to indicate compliance to Service Bulletin CF6-80C2 S/B 72-1405, LLP part number, LLP serial number, part number of the No. 3 bearing packing that was removed and the number of cycles operated with the wrong No. 3 bearing packing for each of the LLPs that follow:



# . Fan mid shaft



# . HPC stage 1 disk



# . HPC stage 2 disk



# . HPC stage 3 through 9 spool



# . HPC stage 10 spool (if installed)



# . HPC stage 10 through 14 or stage 11 through 14 spool



# . Low pressure turbine (LPT) shaft



# . LPT stage 3 disk

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 6 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing



# . LPT stage 4 disk



# . LPT stage 5 disk As an alternative, if a permanent record for the LLP does not exist, a notation described in paragraph 3.A.(2)(a) can be recorded for each LLP in the engine maintenance record. (b) If the engine has operated for 5,500 cycles or more since the installation, discard the parts that follow:



# . HPC stage 10 through 14 spool or stage 11 through 14 spool



# . LPT stage 3 disk, P/N 9373M53P05 (if installed)



# . LPT stage 4 disk, P/N 9373M54P03 (if installed) 1 Make a notation on the LLP permanent record to indicate compliance to Service Bulletin CF6-80C2 S/B 72-1405, LLP part number, LLP serial number, part number of the No. 3 bearing packing that was removed and the number of cycles operated with the wrong No. 3 bearing packing for each of the LLPs that follow:



# . Fan mid shaft



# . HPC stage 1 disk



# . HPC stage 2 disk



# . HPC stage 3 through 9 spool



# . HPC stage 10 spool (if installed)



# . LPT shaft



# . LPT stage 3 disk (all parts other than P/N 9373M53P05)



# . LPT stage 4 disk (all parts other than P/N 9373M54P03)



# . LPT stage 5 disk As an alternative, if a permanent record for the LLP does not exist, a notation described in paragraph 3.A.(2)(b) can be recorded for each LLP in the engine maintenance record. (c) Replace the incorrect No. 3 bearing packing with the correct con fi guration No. 3 bearing packing. (3) If a "HIGH FLOW" or a "FLOW TBD" packing is installed: (a) Further guidance will be provided in a future revision of this Service Bulletin in September, 2011. Contact CF6 Engineering through the GE

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 7 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing Aviation Operations Center (+1 513 552 3272) for disposition of the LLPs that follow:



# . Fan mid shaft



# . HPC stage 1 disk



# . HPC stage 2 disk



# . HPC stage 3 through 9 spool



# . HPC stage 10 disk (if installed)



# . HPC stage 10 through 14 or stage 11 through 14 spool



# . LPT shaft



# . LPT stage 3 disk



# . LPT stage 4 disk



# . LPT stage 5 disk 1 Make a notation on the LLP permanent record to indicate compliance to Service Bulletin CF6-80C2 S/B 72-1405, LLP part number, LLP serial number, part number of the No. 3 bearing packing that was removed and the number of cycles operated with the wrong No. 3 bearing packing for each of the LLPs that follow:



# . Fan mid shaft



# . HPC stage 1 disk



# . HPC stage 2 disk



# . HPC stage 3 though 9 spool



# . HPC stage 10 spool



# . HPC stage 10 through 14 or stage 11 through 14 spool



# . LPT shaft



# . LPT stage 3 disk



# . LPT stage 4 disk



# . LPT stage 5 disk As an alternative, if a permanent record for the LLP does not exist, a notation described in paragraph 3.A.(3)(a) can be recorded for each LLP in the engine maintenance record.
June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 8 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing
(b) Replace the incorrect No. 3 bearing packing with the correct con fi guration No. 3 bearing packing.

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 9 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing

No. 3 Bearing Packing Identi fi cation Chart Figure 1

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 10 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing

Determining Flow Variation Figure 2

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 11 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct No. 3 Bearing Packing

Inspection Process Flowchart Figure 3

June 30, 2011 CF6-80C2 S/B 72-1405 PAGE 12 GE PROPR IETARY INFORMATION - Subject to the restrictions on the cover or fi rst page.