AD 78-07-03

final rule

GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines

AD Number
78-07-03
Status
final_rule
Effective Date
Product Category
engine
Docket
Unknown
FR Citation
This information is not available.
Technical illustration of an aircraft turbine engine assembly
Problem area Engine

Applicability

TypeManufacturerModelDetails
engine General Electric Company CF6-6D GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines
engine General Electric Company CF6-6D1 GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines

Unsafe Condition

Failure of the 11-13 Stage Compressor Spool, P/N 9021M66 (all assembly part numbers).

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Modify the 11-13 spool in accordance with General Electric Service Bulletin 72-682. Inspect the specified serial numbers within the next 500 cycles and thereafter at intervals of 700 or 1800 cycles depending on prior inspection.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Not later than December 31, 1979.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

General Electric Model CF6-6D and CF6-6D1 engines with specified serial numbers listed in the AD.

AI-generated summary from the source AD text. Verify against the official source before acting.

Federal Register Abstract

Compressor Spool

Applicability Source Text

Show captured applicability text from the source AD
AD Final Rules - DRS_78-07-03.html
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AD Number:
78-07-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines
Subject:
Compressor Spool
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
05/22/1978
Make:
General Electric Company
Model:
CF6-6D | CF6-6D1
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 78-07-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3211

AD NUMBER:   78-07-03

SUBJECT HEADING:   GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines

ACTION:  

SUMMARY:  

DATES:   Effective May 22, 1978.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
78-07-03 GENERAL ELECTRIC: Amendment 39-3164 as amended by Amendment 39-3211. Applies to CF6-6D and CF6-6D1 engines installed in aircraft certificated in all categories.

To prevent failure of the 11-13 Stage Compressor Spool, P/N 9021M66 (all assembly part numbers), thirteenth stage rim compliance is required, unless previously accomplished, as follows:

(a) Modify the 11-13 spool in accordance with General Electric Service Bulletin 72-682 not later than December 31, 1979.

(b) Pending modification per (a) above inspect the following 11-13 spool serials in accordance with General Electric Service Bulletin 72-673 or 72-700 within the next 500 cycles in service after the effective date of this AD and thereafter each 700 cycles in service if previously inspected in accordance with General Electric Service Bulletin 72-700 or 1800 cycles in service if previously inspected in accordance with General Electric Service Bulletin 72-673.

MP31293A	MP021392	MP022819	MP023561	MP024432	MP024433
MP025458	MP025463	MP025472	MP027903	MP027906	MP028163
MP028175	MP028176	MP028574	MP028711	MP029244	MP029245
MP029246	MP031291	MP031292	MP031304	MP031736	MP032456
MP033570	MP034332	MP034468	MP034648	MP034649	MP034808
MP034810	MP034821	MP034822	MP034823	MP035315	MP035343
MP035344	MP035350	MP035351	MP035353	MP035816	MP035821
MP035823	MP035836	MP035844	MP035847	MP035848	MP036810
MP036814	MP036829	MP037135	MP0A0123	MP0A0129	MP0A0134
MP0A0138	MP0A0140	MP0A0161	MP0A0273	MP0A0277	MP0A0278
MP0A0280	MP0A0281	MP0A0286	MP0A0287	MP0A0292	MP0A0293
MP0A0354	MP0A0379	MP0A0383	MP0A0396	MP0A0400	MP0A0402
MP0A0404	MP0A0411	MP0A0430	MP0A0446	MP0A0450	MP0A0458
MP0A0571	MP0A0579	MP0A0587	MP0A0589	MP0A0591	MP0A0600
MP0A0604	MP0A0643	MP0A0644	MP0A0645	MP0A0648	MP0A0652
MP0A0659	MP0A0660	MP0A0744	MP0A0751	MP0A0755	MP0A0797
MP0A0811	MP0A0813	MP0A0816	MP0A0819	MP0A0820	MP0A0822
MP0A0830	MP0A0831	MP0A0875	MP0A0876	MP0A0882	MP0C0889
MP0C3154	MPX32453	RP021891	RP022426	RP023605	RP023614
RP024401					

The manufacturer's specifications and procedures identified in this directive are incorporated herein and made part hereof pursuant to 5 U.S.C. 553(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to General Electric Company, Cincinnati, Ohio 45215. These documents may also be examined at the Great Lakes Regional Office, 2300 East Devon Avenue, Des Plaines, Illinois 60018, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. 20591. A historical file on this airworthiness directive which includes incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and the Great Lakes Region.

Amendment 39-3164 became effective April 6, 1978.

This amendment 39-3211 becomes effective May 22, 1978.

FOOTER:

Document Text

Show stored source text (verify against official source)
AD Final Rules - DRS_78-07-03.html
Copy URL
Print/Save as PDF
Document Versions
 Feedback
Details
AD Number:
78-07-03
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines
Subject:
Compressor Spool
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
05/22/1978
Make:
General Electric Company
Model:
CF6-6D | CF6-6D1
Product Type:
Engine
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 78-07-03
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3211

AD NUMBER:   78-07-03

SUBJECT HEADING:   GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines

ACTION:  

SUMMARY:  

DATES:   Effective May 22, 1978.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
78-07-03 GENERAL ELECTRIC: Amendment 39-3164 as amended by Amendment 39-3211. Applies to CF6-6D and CF6-6D1 engines installed in aircraft certificated in all categories.

To prevent failure of the 11-13 Stage Compressor Spool, P/N 9021M66 (all assembly part numbers), thirteenth stage rim compliance is required, unless previously accomplished, as follows:

(a) Modify the 11-13 spool in accordance with General Electric Service Bulletin 72-682 not later than December 31, 1979.

(b) Pending modification per (a) above inspect the following 11-13 spool serials in accordance with General Electric Service Bulletin 72-673 or 72-700 within the next 500 cycles in service after the effective date of this AD and thereafter each 700 cycles in service if previously inspected in accordance with General Electric Service Bulletin 72-700 or 1800 cycles in service if previously inspected in accordance with General Electric Service Bulletin 72-673.

MP31293A	MP021392	MP022819	MP023561	MP024432	MP024433
MP025458	MP025463	MP025472	MP027903	MP027906	MP028163
MP028175	MP028176	MP028574	MP028711	MP029244	MP029245
MP029246	MP031291	MP031292	MP031304	MP031736	MP032456
MP033570	MP034332	MP034468	MP034648	MP034649	MP034808
MP034810	MP034821	MP034822	MP034823	MP035315	MP035343
MP035344	MP035350	MP035351	MP035353	MP035816	MP035821
MP035823	MP035836	MP035844	MP035847	MP035848	MP036810
MP036814	MP036829	MP037135	MP0A0123	MP0A0129	MP0A0134
MP0A0138	MP0A0140	MP0A0161	MP0A0273	MP0A0277	MP0A0278
MP0A0280	MP0A0281	MP0A0286	MP0A0287	MP0A0292	MP0A0293
MP0A0354	MP0A0379	MP0A0383	MP0A0396	MP0A0400	MP0A0402
MP0A0404	MP0A0411	MP0A0430	MP0A0446	MP0A0450	MP0A0458
MP0A0571	MP0A0579	MP0A0587	MP0A0589	MP0A0591	MP0A0600
MP0A0604	MP0A0643	MP0A0644	MP0A0645	MP0A0648	MP0A0652
MP0A0659	MP0A0660	MP0A0744	MP0A0751	MP0A0755	MP0A0797
MP0A0811	MP0A0813	MP0A0816	MP0A0819	MP0A0820	MP0A0822
MP0A0830	MP0A0831	MP0A0875	MP0A0876	MP0A0882	MP0C0889
MP0C3154	MPX32453	RP021891	RP022426	RP023605	RP023614
RP024401					

The manufacturer's specifications and procedures identified in this directive are incorporated herein and made part hereof pursuant to 5 U.S.C. 553(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to General Electric Company, Cincinnati, Ohio 45215. These documents may also be examined at the Great Lakes Regional Office, 2300 East Devon Avenue, Des Plaines, Illinois 60018, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. 20591. A historical file on this airworthiness directive which includes incorporated material in full is maintained by the FAA at its headquarters in Washington, D.C., and the Great Lakes Region.

Amendment 39-3164 became effective April 6, 1978.

This amendment 39-3211 becomes effective May 22, 1978.

FOOTER:

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.