AD 92-11-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32F (C-9A) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32F (C-9B) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-33F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-34 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-34F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-20, -30, -40, -50, and C-9 (Military) Series Airplanes |
Unsafe Condition
Cracks in the slat drive mechanism and its interrelated structure could cause failure of the slat drive mechanism, leading to loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the actuator slat drive mechanism and bellcrank shafts for cracks as specified in service bulletins. Replace components if cracks exceed one inch or are found in certain locations, using specified part numbers. Inspections must be repeated at intervals not exceeding 1,600 or 750 landings. Compliance with service bulletins 27-196, 27-250, and A27-250 is required.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 20 days or 135 landings after January 10, 1985, and within 500 landings after July 8, 1991, or at the next scheduled inspection. Replacement required within 18 months or 2,250 flight cycles after the AD's effective date (July 23, 1992).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas DC-9-20, -30, -40, -50, and C-9 (Military) series airplanes with factory serial numbers listed in Service Bulletins 27-196, 27-250, and A27-250.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.