AD 91-13-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-81 (MD-81) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-82 (MD-82) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-83 (MD-83) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-87 (MD-87) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | MD-88 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9-80 Series Airplanes and MD-88 Airplanes |
Unsafe Condition
Cracks in the rudder control tab crank assembly, P/N 3955539-1, could lead to loss of rudder control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the rudder control tab crank assembly for cracks within 5 days after 3,000 total flight hours or 5 days after the AD's effective date (whichever is later). If cracked, replace the part before further flight. Conduct an eddy current inspection within 60 days after 3,000 flight hours or 60 days after the AD's effective date (whichever is later). Submit a report within 10 calendar days of inspection. Use Alert Service Bulletin A27-320.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 5 days after accumulation of 3,000 total flight hours or within 5 days after the effective date of this AD, whichever occurs later (for paragraph (a)), and within 60 days after accumulation of 3,000 total flight hours or within 60 days after the effective date of this AD, whichever occurs later (for paragraph (b)).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
MCDONNELL DOUGLAS DC-9-80 series airplanes (Fuselage Numbers 1269 and subsequent) and MD-88 airplanes equipped with a non-metallic, composite rudder assembly.
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.