AD 89-07-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-8-11 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-12 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-21 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-31 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-32 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-33 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-41 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-42 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-43 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
| aircraft | The Boeing Company | DC-8-51 | Airworthiness Directives; McDONNELL DOUGLAS DC-8 Series Airplanes |
Unsafe Condition
Fatigue failure of the rudder drive torque tube crank assembly (P/N 5647102-1 or -501) could cause loss of directional control of the airplane in critical flight regimes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct an eddy current inspection of the rudder drive torque tube crank assembly within 1,000 hours time-in-service after the effective date, unless already done within the last 2,600 hours. Repeat inspections every 3,600 hours time-in-service if no cracks are found. Replace cracked assemblies with P/N 5647102-501 or -503 as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 1,000 hours time-in-service after the effective date of this AD, unless already accomplished within the last 2,600 hours time-in-service
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Model DC-8 series airplanes equipped with rudder drive torque tube crank assembly P/N 5647102-1 or -501
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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