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

confidence. 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, modifications, spare

parts, designs, or configuration 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 12
ENGINE - No. 1, 2, and 3 Bearing Areas Fan Module (72-00-01) - Shop Inspection for Correct

No. 3 Bearing Packing

1. PLANNING INFORMATION

A. Effectivity

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. Description

This Service Bulletin provides instructions for a once-through-the-fleet 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 verified by measuring

the packing hole size.

C. Compliance

Category 4

GE recommends that you do this Service Bulletin when the fan is separated from

the core.

NOTE: 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 fleet.

D. Concurrent Requirements

None.

E. Reason

(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 fleet where a No. 3

bearing packing with the wrong hole size has been installed during overhaul.

The extent to which this condition exists varies by overhaul provider.

June 30, 2011 CF6-80C2 S/B 72-1405

PAGE 2

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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 airflow into the

LLP bore cooling circuit. Reductions or increases in this flow 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 configuration.

(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 airflow.

(5) Substantiation:

Substantiation is by analysis and by comparative analysis.

F. Approval

This Service Bulletin has been reviewed by the FAA and the repair(s) and

modification(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. Manpower

No additional man-hours are required to comply with this Service Bulletin.

H. Weight and Balance

Weight and balance are not changed.

I. References (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 PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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

NOTE: 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. Publications Affected

None.

K. Interchangeability

The No. 3 bearing packings listed in paragraph 2.A.(2) are NOT functionally

interchangeable. Verify proper configuration per the Service Bulletins listed in

paragraph 1.I., References.

L. Software Accomplishment Summary

Not applicable.

2. MATERIAL INFORMATION

A. Material - Price and Availability

(1) Parts necessary to do this Service Bulletin:

None.

June 30, 2011 CF6-80C2 S/B 72-1405

PAGE 4

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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:

Part Number

Qty/

Eng Part Name

Unit ($)

Price

Pkg

Qty

Lead

Time

Days

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

CAUTION: PACKINGS ARE NOT INTERCHANGEABLE. REFER TO

PARAGRAPH 1.K., Interchangeability.

NOTE: Prices are provided for planning purposes and are subject to change.

(3) Consumables:

None.

B. Industry Support Information

None.

C. Configuration Chart

None.

D. Parts Disposition

Contact CF6 Engineering for parts disposition in accordance with paragraph 3.,

ACCOMPLISHMENT INSTRUCTIONS.

E. Tooling - Price and Availability

None.

3. ACCOMPLISHMENT INSTRUCTIONS

A. Removal and Inspection of the No. 3 Bearing Packing

(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 PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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 airflow is provided by the part. Make sure the

No. 3 bearing packing installed is the correct part number for the

engine configuration. If so, this Service Bulletin has been complied

with and no further action is needed.

NOTE: Although the No. 3 bearing packings designated as

"CORRECT FLOW" packings in Figure 2 supply the correct

airflow to the secondary flow circuit, not all "CORRECT

FLOW" packings are applicable in a given configuration. If

a No. 3 bearing packing is not listed by a previous or future

Service Bulletin as acceptable for a given configuration,

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 PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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

configuration 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 PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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 PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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

configuration No. 3 bearing packing.

June 30, 2011 CF6-80C2 S/B 72-1405

PAGE 9

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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 Identification Chart

Figure 1

June 30, 2011 CF6-80C2 S/B 72-1405

PAGE 10

GE PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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 PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first 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 PROPRIETARY INFORMATION - Subject to the restrictions on the cover or first page.