AD 98-16-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus Aircraft Limited | PC-7 | Airworthiness Directives; Pilatus Aircraft Ltd. Model PC-7 Airplanes |
Unsafe Condition
Deterioration of the main landing gear (MLG) or nose landing gear (NLG) leg seal unit could cause MLG or NLG failure, resulting in damage to the airplane or airplane control problems during takeoff, landing, or taxi operations.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the seal unit on both MLG legs and the NLG leg within the next 100 hours time-in-service after the effective date of this AD, in accordance with Pilatus Service Bulletin No. 32-018 dated March 6, 1998. Additionally, do not install MLG or NLG legs without the improved seal unit as specified.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 100 hours time-in-service after the effective date of this AD
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Affected Aircraft
Pilatus Aircraft Ltd. Model PC-7 airplanes, all manufacturer serial numbers (MSN) up to and including MSN 609
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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