# AD 90-26-01: Fuel Manifold Systems - Type: Airworthiness directive - Status: Historical - Products: General Electric CF6-80C2A1, CF6-80C2A2, CF6-80C2A3, CF6-80C2A5, CF6-80C2B1, CF6-80C2B1F, CF6-80C2B1F1, CF6-80C2B2, CF6-80C2B2F, CF6-80C2B4, CF6-80C2B4F, CF6-80C2B6 and 2 more - Effective: December 20, 1990 - Superseded by: [AD 2014-21-01](https://openairdocs.org/ad/2014-21-01) - Product type: Engine - Amendment: 39-6810 - Docket: 89-ANE-03 - Registered aircraft: 592 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D44130197C3141338625686C0048C896.0001 - DRS record last changed: August 7, 2025 - Page: https://openairdocs.org/ad/90-26-01 ## The airworthiness directive 90-26-01 GENERAL ELECTRIC COMPANY: Amendment 39-6810. Docket No. 89-ANE- 03. Applicability: General Electric Company (GE) CF6-80C2 series turbofan engines installed on, but not limited to, Airbus A300 and A310 and Boeing 747 and 767 series aircraft. Compliance: Required within 30 calendar days after the effective date of this AD, unless already accomplished. To prevent engine fire and potentially significant aircraft damage, accomplish the following: (a) Replace fuel manifold systems, Part Numbers (P/N) 1303M31G04 and 1303M32G04, with fuel manifold systems, P/N 1303M31G06 and 1303M32G06, or with P/N 1303M31G07 and P/N 1303M32G07 in accordance with the Accomplishment Instructions of GE CF6-80C2 Series Service Bulletin 73-053, Revision 3, dated April 3, 1990. (b) Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished. (c) Upon submission of substantiating data by an owner or operatorthrough an FAA Airworthiness Inspector, an alternate method of compliance with the requirements of this AD or adjustments to the compliance times specified in this AD may be approved by the Manager, Engine Certification Office, ANE-140, Engine and Propeller Directorate, Aircraft Certification Service, FAA, 12 New England Executive Park, Burlington, Massachusetts 01803. The installation of the improved fuel manifold systems shall be accomplished in accordance with the following GE document: Document Number Page Numbers Issue/Rev. Date SB 73-053 4-14, 18-25, 27, 29-42 Revision 2 08/23/89 1-3, 15-17, 26,28, 43-45 Revision 3 04/03/90 This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from General Electric Aircraft Engines, CF6 Distribution Clerk, Room 132, 111 Merchant Street, Cincinnati, Ohio 45246. Copies may be inspected at the Regional Rules Docket, Office of the Assistant Chief Counsel, FAA, New England Region, 12 New England Executive Park, Room 311, Burlington, Massachusetts 01803, or at the Office of the Federal Register, 1100 L Street, NW, Room 8301, Washington, DC 20591. Airworthiness Directive 90-26-01 supersedes AD 89-03-52, Amendment 39-6199. This amendment (39-6810, AD 90-26-01) becomes effective on December 20, 1990. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS E13NE](https://openairdocs.org/tcds/E13NE): General Electric Company GE Aerospace; names 14 of 28 models: CF6-80C2B4, CF6-80C2B4F, CF6-80C2A1, CF6-80C2D1F, CF6-80C2B6, CF6-80C2B1F, CF6-80C2A3, CF6-80C2B1… ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 592 (0 by airframe model, 592 by engine model) - Makers: Boeing 489, Mcdonnell Douglas 65, Airbus Industrie 38 Models with the most aircraft: - [GE CF6-80C2B6F](https://openairdocs.org/engine/ge-cf6-80c2b6f): 258 aircraft (engine model) - [GE CF6-80 series](https://openairdocs.org/engine/ge-cf6-80-series): 237 aircraft (engine model) - [GE CF6-80C2B1F](https://openairdocs.org/engine/ge-cf6-80c2b1f): 37 aircraft (engine model) - [GE CF6-80C2B6](https://openairdocs.org/engine/ge-cf6-80c2b6): 25 aircraft (engine model) - [GE CF6-80C2D1F](https://openairdocs.org/engine/ge-cf6-80c2d1f): 24 aircraft (engine model) - [GE CF6-80C2A5](https://openairdocs.org/engine/ge-cf6-80c2a5): 3 aircraft (engine model) - [GE CF6-80C2A1](https://openairdocs.org/engine/ge-cf6-80c2a1): 2 aircraft (engine model) - [GE CF6-80C2B2](https://openairdocs.org/engine/ge-cf6-80c2b2): 2 aircraft (engine model) - [GE CF6-80C2B1](https://openairdocs.org/engine/ge-cf6-80c2b1): 1 aircraft (engine model) - [GE CF6-80C2B4](https://openairdocs.org/engine/ge-cf6-80c2b4): 1 aircraft (engine model) - [GE CF6-80C2B4F](https://openairdocs.org/engine/ge-cf6-80c2b4f): 1 aircraft (engine model) - [GE CF6-80C2B1F1](https://openairdocs.org/engine/ge-cf6-80c2b1f1): 1 aircraft (engine model) All 12 models: https://openairdocs.org/ad/90-26-01/models.md Every aircraft: https://openairdocs.org/ad/90-26-01/aircraft.md ## Related documents - [AD 2014-21-01](https://openairdocs.org/ad/2014-21-01): Fuel manifold · General Electric CF6-80C2A1, CF6-80C2A2, CF6-80C2A3 and 26 more. Effective Nov 28, 2014. Supersedes this AD Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.