# AD 68-14-02: Main Landing Gear - 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Series, 727-100C Series, 727-200 Series, 727-200F Series, 727 Series and 727C Series - Effective: July 11, 1968 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-620 - Registered aircraft: 25 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B472D2E9618290DC8625682E0062AB7E.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/68-14-02 ## The airworthiness directive 68-14-02 BOEING: Amendment 39-620. Applies to all Model 727 Series Airplanes. a. Unless already accomplished, within the next 250 hours time in service after the effective date of this AD, install in each main landing gear downlock actuating system, a torque tube assembly, Boeing P/N 65-26921 in which the brazed joint at each end has been inspected and found to be acceptable in the manner described in Boeing Alert Service Bulletin No. 32-160 dated July 1, 1968, or later FAA-approved revision, or which has been modified to incorporate special structural fasteners in the locations and in the manner described in that Bulletin or in another manner approved by the Chief, Aircraft Engineering Division, FAA Western Region. b. Prior to return to service following the replacement of any torque tube assembly, Boeing P/N 65-26921, inspect the replacement assembly of the same part number in the manner described in Boeing Alert Service Bulletin No. 32-160 dated July 1, 1968, or laterFAA-approved revision, unless the assembly has been modified to install structural fasteners in the manner prescribed in a., above, or unless there is conclusive evidence that the assembly has been inspected in the manner described in Boeing Service Bulletin No. 32-160 dated July 1, 1968, or later FAA-approved revision, and found to be satisfactory. NOTE. Conclusive evidence may consist of markings or other identification placed on the assembly by the airplane manufacturer or airplane operator, when it is known that such marking or identification verifies compliance with the prescribed inspection and acceptance requirement. c. Airplanes inspected and found to have downlock torque tube assemblies with unacceptable brazed joints may be flown in accordance with FAR 21.87 and with landing gear extended and locked to a base where replacement or modification of the torque tube assembly can be accomplished. This amendment becomes effective July 11, 1968. ## 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/68-14-02/models.md Every aircraft: https://openairdocs.org/ad/68-14-02/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.