AD 91-22-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) Series Airplanes, and MD-88 Airplanes |
Unsafe Condition
Unexpected tailcone deployment on landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a visual indicating means approved by the FAA to signal when the tailcone is not attached. For airplanes listed in Service Bulletin 53-199, Revision 3, modify by installing the 'tailcone unsafe' indicating system or deactivate the tailcone release system. Modify the tailcone release actuating mechanism shroud with a cover over the slot. Alternative methods or compliance times may be approved.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 24 months after August 8, 1987 for paragraph (a); within 24 months after January 3, 1992 for paragraphs (b) and (c).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
MCDONNELL DOUGLAS DC-9 series (including C-9 Military), DC-9-80 (MD-80) series, and MD-88 airplanes in passenger, passenger/cargo, or all-cargo configurations.
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
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