# AD 64-12-02: Thrust Reversers - Type: Airworthiness directive - Status: Current - Products: Boeing 727-100 Series, 727-100C Series, 727-200 Series, 727-200F Series, 727 Series and 727C Series - Effective: August 29, 1964 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Registered aircraft: 25 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0A85706B5017323486256CE5007695C6.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/64-12-02 ## The airworthiness directive 64-12-02 BOEING: Amdt. 743 Part 507 Federal Register June 5, 1964. Applies to All Model 727 Series Aircraft. Compliance required as indicated. As an interim safety measure pending development and accomplishment of final corrective modifications, the following is required: (a) Initial compliance required within 20 hours' time in service after May 19, 1964. Before each flight when the thrust reversers have been used on the previous flight, conduct a close visual inspection of each reverser to ascertain that each deflector door is in the fully closed position and that the thrust reverser indicator light is out. If the doors are not fully closed or if the indicator light is not out corrections shall be made before further flight. Upon compliance with (b) and (c) of this directive the visual inspection required by this paragraph may be discontinued. (b) Within 20 hours' time in service after the effective date of this AD, unless previously accomplished, inspectthe thrust reverser locking pin for freedom of action and the reverser operating light switch for proper adjustment and rigging. If the locking pin is bent or binding or if the operating light is out of adjustment, necessary correction shall be made before further flight. (Boeing Service Bulletin No. 78-10R1 covers this subject.) (c) Within 150 hours' time in service after the effective date of this AD, unless already accomplished, modify the thrust reverser lockout actuator rocker, including rework of the switch actuating tine, in accordance with Boeing Service Bulletin No. 78-10R1. NOTE. - The original issue of this bulletin did not include information for rework of the tine. This rework is necessary to prevent interference and damage to the locking pin. (d) Prior to compliance with (b) and (c) the inspection required by (a) shall also be made before flight when any reverser is again actuated on the ground during engine runup or during taxiing. Upon compliance with (b) and (c) further inspections under paragraph (a) need not be made. (e) Approval of any equivalent means of compliance with this directive shall be processed through the Aircraft Engineering Division, FAA Western Region, Los Angeles, California. (Boeing's telegram to all 727 operators dated May 20, 1964, covers this subject.) This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated May 22, 1964, superseding the telegram dated May 18, 1964. Revised July 7, 1964. Revised August 29, 1964. ## Affected data sheets (1) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A3WE](https://openairdocs.org/tcds/A3WE): The Boeing Company; names 6 of 6 models: 727-100 Series, 727 Series, 727-200 Series, 727-100C Series, 727-200F Series, 727C 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: 25 (25 by airframe model, 0 by engine model) - Makers: Boeing 25 Models with the most aircraft: - [Boeing 727-223](https://openairdocs.org/model/boeing-727-223): 9 aircraft (airframe model) - [Boeing 727-227](https://openairdocs.org/model/boeing-727-227): 4 aircraft (airframe model) - [Boeing 727-225](https://openairdocs.org/model/boeing-727-225): 2 aircraft (airframe model) - [Boeing 727-200F](https://openairdocs.org/model/boeing-727-200f): 1 aircraft (airframe model) - [Boeing 727-200](https://openairdocs.org/model/boeing-727-200): 1 aircraft (airframe model) - [Boeing 727-212](https://openairdocs.org/model/boeing-727-212): 1 aircraft (airframe model) - [Boeing 727-230](https://openairdocs.org/model/boeing-727-230): 1 aircraft (airframe model) - [Boeing 727-232](https://openairdocs.org/model/boeing-727-232): 1 aircraft (airframe model) - [Boeing 727-243](https://openairdocs.org/model/boeing-727-243): 1 aircraft (airframe model) - [Boeing 727-247](https://openairdocs.org/model/boeing-727-247): 1 aircraft (airframe model) - [Boeing 727-264](https://openairdocs.org/model/boeing-727-264): 1 aircraft (airframe model) - [Boeing 727-281](https://openairdocs.org/model/boeing-727-281): 1 aircraft (airframe model) - [Boeing 727-277](https://openairdocs.org/model/boeing-727-277): 1 aircraft (airframe model) All 13 models: https://openairdocs.org/ad/64-12-02/models.md Every aircraft: https://openairdocs.org/ad/64-12-02/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.