AD 71-17-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 Series Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 Series Airplanes |
Unsafe Condition
Body gear steer input during takeoff or landing could occur, which may result in unintended steering movements of the body gear.
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Required Actions
Amend the Airplane Flight Manual to include instructions to deactivate body gear steering before takeoff and reactivate after landing. Disarm the circuit breaker labeled 'Body Gear Steering Arm and Ind' as an interim procedure. Install a manually operated body gear steering switch by January 1, 1972, per Boeing Service Bulletin 32-2113.
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Compliance Time
Within 100 hours' time in service after August 17, 1971, and on or before January 1, 1972.
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Affected Aircraft
Boeing Model 747 Series airplanes including 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, and other 747 series models as listed.
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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