AD 72-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 747-100 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-100B Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-100B SUD Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200B Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200C Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-200F Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-300 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400 Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400D Series | BOEING Model 747 Airplanes |
| aircraft | The Boeing Company | 747-400F Series | BOEING Model 747 Airplanes |
Unsafe Condition
Failed landing gear alternate extension actuators
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Required Actions
Inspect landing gear alternate extension actuators in accordance with Boeing Service Bulletin 747-32-2118 or later FAA-approved revisions until modified per the same service bulletin or an equivalent inspection approved by the Chief, Aircraft Engineering Division, FAA Western Region.
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Compliance Time
Within the next 100 hours' time in service after the effective date of this AD, unless already accomplished within the last 400 hours' time in service, and thereafter at intervals not to exceed 500 hours' time in service from the last inspection, until modified per Boeing Service Bulletin 747-32-2118
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Affected Aircraft
Boeing Model 747 airplanes listed in Boeing Service Bulletin 747-32-2118 dated December 20, 1971, or later FAA-approved revisions except the Model 747-131
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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