AD 91-06-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | BAE Systems (Operations) Limited | ATP | Airworthiness Directives; British Aerospace Model ATP Series Airplanes |
Unsafe Condition
Seizure of the main landing gear (MLG) wheel and subsequent damage to the tire due to wear on the wheel hub halves and wheel bearing grease retainer seals.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 30 days after the AD's effective date, and at each wheel removal, inspect wheel hub halves and grease retainer seals per ATP-32-13 SB. Replace parts if groove diameter exceeds 4.540 inches, apply Alocrom if within limits, replace unchamfered or damaged seals, verify part numbers, and install improved seals via Dunlop Modification C2614 to terminate inspections.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD, and thereafter at each wheel removal
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Model ATP series airplanes with main wheel assemblies Part Number AHA1538 and AHA1663.
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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