AD 79-13-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-50A | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50C | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50C1 | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50C2 | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50C2B | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50C2D | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50CA | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50E | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50E1 | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50E2 | GENERAL ELECTRIC Model CF6-50 Series Engines |
| engine | General Electric Company | CF6-50E2B | GENERAL ELECTRIC Model CF6-50 Series Engines |
Unsafe Condition
Compressor rotor spool fatigue cracking could cause engine failure.
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Required Actions
Remove from service stage 3-9 high pressure compressor rotor spools P/N 9081M49 with specified serial numbers: A0436, A0570, A0581, A0590, A0432, and A0443.
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Compliance Time
within the next 30 calendar days after the effective date of this AD
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Affected Aircraft
General Electric Model CF6-50 series engines with stage 3-9 high pressure compressor rotor spools P/N 9081M49 (serial numbers A0436, A0570, A0581, A0590, A0432, A0443) installed in certain McDonnell Douglas DC-10, Boeing 747, and Airbus A-300 series aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Compressor Rotor Spools
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_79-13-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-13-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: GENERAL ELECTRIC Model CF6-50 Series Engines Subject: Compressor Rotor Spools Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: General Electric Company Model: CF6-50A | CF6-50C | CF6-50C1 | CF6-50C2 | CF6-50C2B | CF6-50C2D | CF6-50CA | CF6-50E | CF6-50E1 | CF...Show more 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: 79-13-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3508 AD NUMBER: 79-13-09 SUBJECT HEADING: GENERAL ELECTRIC Model CF6-50 Series Engines ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-13-09 GENERAL ELECTRIC: Amendment 39-3508. Applies to General Electric Model CF6-50 series engines containing stage 3-9 high pressure compressor rotor spools P/N 9081M49 (serial numbers as specified in the body of this AD) installed in, but not limited to certain McDonnell Douglas DC-10, Boeing 747, and Airbus Industries A-300 series aircraft certificated in all categories. Due to design differences, this AD does not affect CF6-6 series engines. Compliance required within the next 30 calendar days after the effective date of this AD, unless previously accomplished. To preclude possible engine failure resulting from compressor rotor spool fatigue cracking, remove from service stage 3-9 high pressure compressor rotor spools P/N 9081M49, Serial Numbers A0436, A0570, A0581, A0590, A0432 and A0443. This amendment becomes effective upon publication in the Federal Register. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_79-13-09.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 79-13-09 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: GENERAL ELECTRIC Model CF6-50 Series Engines Subject: Compressor Rotor Spools Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: General Electric Company Model: CF6-50A | CF6-50C | CF6-50C1 | CF6-50C2 | CF6-50C2B | CF6-50C2D | CF6-50CA | CF6-50E | CF6-50E1 | CF...Show more 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: 79-13-09 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-3508 AD NUMBER: 79-13-09 SUBJECT HEADING: GENERAL ELECTRIC Model CF6-50 Series Engines ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 79-13-09 GENERAL ELECTRIC: Amendment 39-3508. Applies to General Electric Model CF6-50 series engines containing stage 3-9 high pressure compressor rotor spools P/N 9081M49 (serial numbers as specified in the body of this AD) installed in, but not limited to certain McDonnell Douglas DC-10, Boeing 747, and Airbus Industries A-300 series aircraft certificated in all categories. Due to design differences, this AD does not affect CF6-6 series engines. Compliance required within the next 30 calendar days after the effective date of this AD, unless previously accomplished. To preclude possible engine failure resulting from compressor rotor spool fatigue cracking, remove from service stage 3-9 high pressure compressor rotor spools P/N 9081M49, Serial Numbers A0436, A0570, A0581, A0590, A0432 and A0443. This amendment becomes effective upon publication in the Federal Register. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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