AD 2021-02-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | Aircraft Ltd | Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes |
Unsafe Condition
chafing between the IFFA and the associated front inboard tension rod, which may cause corrosion of the bare rod aluminium tube and reduce aluminium thickness, leading to failure of the inboard flap drive arm with consequent asymmetric flap extension, possibly resulting in reduced control of the aeroplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
inspect the IFFAs for the correct shape and chafing between the IFFA and the associated front inboard tension rod, with corrective action as necessary, including inspection and modification or replacement of affected parts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours
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Affected Aircraft
Pilatus Model PC-12/47E airplanes with serial number 1576 and higher.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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