# AD 92-10-08: Thrust Reverser - Type: Airworthiness directive - Status: Current - Products: Boeing 757-200 Series, 757-200CB Series and 757-200PF Series - Effective: June 8, 1992 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-8242 - Docket: 92-NM-77-AD - Registered aircraft: 245 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5BF422772EE8D7EB8625696D00708550.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/92-10-08 ## The airworthiness directive 92-10-08 BOEING: Amendment 39-8242. Docket No. 92-NM-77-AD. Applicability: Boeing Model 757-200 series airplanes equipped with Rolls-Royce RB211-535 series engines; as listed in Boeing Alert Service Bulletin 757-78A0030, dated January 31, 1992; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To prevent in-flight deployment of both thrust reverser sleeves on one engine, which could result in reduced controllability of the airplane, accomplish the following: (a) Within 90 days after the effective date of this AD, replace the restrictor union with a standard union, on each engine strut, in the return port of the thrust reverser directional control valve; and perform a functional test of the thrust reverser system; in accordance with Boeing Alert Service Bulletin 757-78A0030, dated January 31, 1992. (b) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, 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 replacement and functional test shall be done in accordance with Boeing Alert Service Bulletin 757-78A0030, dated January 31, 1992. 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 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 FederalRegister, 1100 L Street NW., Room 8401, Washington, DC. (e) This amendment becomes effective on June 8, 1992. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A2NM](https://openairdocs.org/tcds/A2NM): The Boeing Company; names 3 of 4 models: 757-200CB Series, 757-200PF Series, 757-200 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: 245 (245 by airframe model, 0 by engine model) - Makers: Boeing 245 Models with the most aircraft: - [Boeing 757-232](https://openairdocs.org/model/boeing-757-232): 63 aircraft (airframe model) - [Boeing 757-224](https://openairdocs.org/model/boeing-757-224): 40 aircraft (airframe model) - [Boeing 757-222](https://openairdocs.org/model/boeing-757-222): 38 aircraft (airframe model) - [Boeing 757-223](https://openairdocs.org/model/boeing-757-223): 23 aircraft (airframe model) - [Boeing 757-236](https://openairdocs.org/model/boeing-757-236): 20 aircraft (airframe model) - [Boeing 757-251](https://openairdocs.org/model/boeing-757-251): 18 aircraft (airframe model) - [Boeing 757-231](https://openairdocs.org/model/boeing-757-231): 13 aircraft (airframe model) - [Boeing 757-200 SERIES](https://openairdocs.org/model/boeing-757-200-series): 7 aircraft (airframe model) - [Boeing 757-204](https://openairdocs.org/model/boeing-757-204): 6 aircraft (airframe model) - [Boeing 757-225](https://openairdocs.org/model/boeing-757-225): 5 aircraft (airframe model) - [Boeing 757-230](https://openairdocs.org/model/boeing-757-230): 4 aircraft (airframe model) - [Boeing 757-258](https://openairdocs.org/model/boeing-757-258): 3 aircraft (airframe model) - [Boeing 757-256](https://openairdocs.org/model/boeing-757-256): 3 aircraft (airframe model) - [Boeing 757-260PF](https://openairdocs.org/model/boeing-757-260pf): 2 aircraft (airframe model) All 14 models: https://openairdocs.org/ad/92-10-08/models.md Every aircraft: https://openairdocs.org/ad/92-10-08/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.