# AD 93-05-13: Power Feeder Connectors - Type: Airworthiness directive - Status: Current - Products: Boeing 747-400 Series, 747-400D Series, 747-400F Series, 767-200 Series, 767-300 Series and 767-300F Series - Effective: March 18, 1993 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-8517 - Docket: 92-NM-223-AD - Registered aircraft: 455 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F9DD99F2C9A012E68625696F0071E68F.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/93-05-13 ## The airworthiness directive 93-05-13 BOEING: Amendment 39-8517. Docket 92-NM-223-AD. Supersedes AD 92-27-02, Amendment 39-8435. Applicability: Model 747-400 series airplanes having line positions up to and including 958, inclusive, equipped with Rolls Royce engines and electrical power feeder connectors at engine firewalls; and Model 767 series airplanes having variable numbers VN111 through VN124, inclusive, and variable numbers VN130 through VN132, inclusive, equipped with Rolls Royce engines and electrical power feeder connectors at engine firewalls; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent undetected fires in the engine strut, accomplish the following: (a) Within 30 days after December 30, 1992 (the effective date of AD 92-27-02, Amendment 39-8435), perform a visual inspection of the power feeder connector at each engine firewall to detect signs of arcing, deterioration, unusual hardness or softness, and cracking ofthe elastomer insert, in accordance with Boeing Alert Service Bulletin 747-24A2190, dated November 16, 1992 (for Model 747-400 series airplanes); or Boeing Alert Service Bulletin 767- 24A0088, dated November 16, 1992 (for Model 767 series airplanes); as applicable. (1) If any damaged connector is found, prior to further flight, replace it in accordance with the applicable service bulletin. Prior to the accumulation of 1,200 flight hours on the new connector, perform the inspection required by paragraph (a) of this AD. Thereafter, repeat that inspection at intervals not to exceed 800 flight hours until the connector is replaced again. (2) If no damage is found and no connector is replaced, repeat the inspection required by paragraph (a) of this AD at intervals not to exceed 800 flight hours. (b) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Seattle AircraftCertification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Seattle ACO. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) The inspections and replacement shall be done in accordance with Boeing Alert Service Bulletin 747-24A2190, dated November 16, 1992; or Boeing Alert Service Bulletin 767- 24A0088, dated November 16, 1992; as applicable. This incorporation by reference was approved previously by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51, as of December 30, 1992 (57 FR 59285, December 15, 1992). Copies may be obtained from Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124-2207. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (e) This amendment becomes effective on March 18, 1993. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A1NM](https://openairdocs.org/tcds/A1NM): The Boeing Company; names 3 of 5 models: 767-300 Series, 767-200 Series, 767-300F Series - [TCDS A20WE](https://openairdocs.org/tcds/A20WE): The Boeing Company; names 3 of 14 models: 747-400D Series, 747-400F Series, 747-400 Series ## 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: 455 (455 by airframe model, 0 by engine model) - Makers: Boeing 455 Models with the most aircraft: - [Boeing 767-300F](https://openairdocs.org/model/boeing-767-300f): 169 aircraft (airframe model) - [Boeing 767-332](https://openairdocs.org/model/boeing-767-332): 46 aircraft (airframe model) - [Boeing 767-322](https://openairdocs.org/model/boeing-767-322): 36 aircraft (airframe model) - [Boeing 767-323](https://openairdocs.org/model/boeing-767-323): 27 aircraft (airframe model) - [Boeing 767-338](https://openairdocs.org/model/boeing-767-338): 13 aircraft (airframe model) - [Boeing 767-316](https://openairdocs.org/model/boeing-767-316): 12 aircraft (airframe model) - [Boeing 767-346](https://openairdocs.org/model/boeing-767-346): 11 aircraft (airframe model) - [Boeing 747-446](https://openairdocs.org/model/boeing-747-446): 10 aircraft (airframe model) - [Boeing 767-281](https://openairdocs.org/model/boeing-767-281): 9 aircraft (airframe model) - [Boeing 747-422](https://openairdocs.org/model/boeing-747-422): 8 aircraft (airframe model) - [Boeing 767-381](https://openairdocs.org/model/boeing-767-381): 8 aircraft (airframe model) - [Boeing 767-232](https://openairdocs.org/model/boeing-767-232): 6 aircraft (airframe model) - [Boeing 767-319](https://openairdocs.org/model/boeing-767-319): 6 aircraft (airframe model) - [Boeing 747-412](https://openairdocs.org/model/boeing-747-412): 5 aircraft (airframe model) - [Boeing 767-306](https://openairdocs.org/model/boeing-767-306): 5 aircraft (airframe model) - [Boeing 767-224](https://openairdocs.org/model/boeing-767-224): 5 aircraft (airframe model) - [Boeing 767-300](https://openairdocs.org/model/boeing-767-300): 5 aircraft (airframe model) - [Boeing 767-316F](https://openairdocs.org/model/boeing-767-316f): 5 aircraft (airframe model) - [Boeing 747-400F](https://openairdocs.org/model/boeing-747-400f): 4 aircraft (airframe model) - [Boeing 747-409](https://openairdocs.org/model/boeing-747-409): 4 aircraft (airframe model) All 52 models: https://openairdocs.org/ad/93-05-13/models.md Every aircraft: https://openairdocs.org/ad/93-05-13/aircraft.md 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.