AD 86-11-01 R1
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
Failure of the wheel bearing could cause wheel or tire failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect both inner and outer wheel bearings (Timken P/N LM229146 and LM229139) within 100 flight cycles after the effective date. Replace damaged bearings with new or serviceable ones before further flight. Reinspect bearings at intervals not exceeding 100 or 200 flight cycles depending on airplane type and service bulletin compliance.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 100 flight cycles after the effective date of this AD
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Affected Aircraft
All Model 747 airplanes, certificated in any category, including 747-100, 100B, 100B SUD, 200B, 200C, and other series as listed
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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