# AD 88-24-01: Main Landing Gear Support Link - 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Series, 727-100C Series, 727-200 Series, 727-200F Series, 727 Series and 727C Series - Effective: December 16, 1988 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Large airplane - Amendment: 39-6057 - Registered aircraft: 25 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/378B1816425D4B038625695A0070F931.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/88-24-01 ## The airworthiness directive 88-24-01 BOEING: Amendment 39-6057. Applies to all Model 727 series airplanes, listed in Boeing Service Bulletin 727-32-306, Revision 1, dated February 25, 1988, certificated in any category. Compliance required as indicated, unless previously accomplished. To prevent failure of the main landing gear support link shaft, which could result in damage to the wing and/or hydraulic system, accomplish the following: A. Within the next 1,000 hours time-in-service since the last inspection in accordance with AD 68-17-01, and thereafter at intervals not to exceed 1,000 hours time-in-service until the requirements of paragraph B., below, are accomplished, perform an ultrasonic inspection for cracks of the P/N 65- 19657-4, -5, -8, or -13 main landing gear (MLG) support link in accordance with paragraph II, Accomplishment Instructions, Part I - Inspection Data, B. Ultrasonic Inspection Data of Boeing Service Bulletin 32-90, Revision 1, dated May 29, 1968, or Boeing Service Bulletin 32-189, dated May 25, 1971. If any cracks are detected, prior to further flight, perform visual and magnetic particle inspections of the MLG support link shaft as described in paragraph B., below, and replace or modify the MLG support link and bushing accordingly. B. Except for airplanes identified in paragraph C., below, within the next 6,000 hours time- in-service or 2 years after the effective date of this AD, whichever occurs sooner, perform a visual inspection of the MLG support link shaft for corrosion, and a magnetic particle inspection for cracks. If any corrosion, and/or cracks are detected in the MLG support link shaft, prior to further flight, repair or replace in accordance with Section 32-01-02 of the Boeing 727 Landing Gear Overhaul Manual. In addition, replace or modify the MLG support link, P/N 65-19657-4, -5, -8, -11, -13, -15, -16, or -18, and associated bushing, as necessary, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 727-32-306, Revision 1, dated February 25, 1988. C. In lieu of the requirements of paragraph B., above, for airplanes line numbers 1793 and subsequent, and airplanes that have been modified in accordance with Boeing Service Bulletin 727-32- 306, dated March 26, 1982, and which have had the MLG support links lubricated at intervals not to exceed 500 hours time-in-service: Within the next 6,000 hours time-in-service or 2 years after the effective date of this AD, whichever occurs sooner, or 5 years since the modification, whichever occurs later, perform a visual inspection for corrosion and a magnetic particle inspection for cracks of the MLG support link shaft. If any corrosion and/or cracks are detected in the MLG support link shaft, prior to further flight, repair or replace in accordance with Section 32-01-02 of the Boeing Model 727 Landing Gear Overhaul Manual. In addition, replace or modify the MLG support link and associated bushing, as necessary, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 727-32-306, Revision 1, dated February 25, 1988. D. An alternate means 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, FAA, Northwest Mountain Region. NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Seattle Aircraft Certification Office. E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD. All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Boeing Commercial Airplanes, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, 9010 East Marginal Way South, Seattle, Washington. This amendment supersedes AD 68-17-01, Amendment 39-635, as amended by Amendment 39-1228. This amendment, 39-6057, becomes effective December 16, 1988. ## 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/88-24-01/models.md Every aircraft: https://openairdocs.org/ad/88-24-01/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.