AD 2003-13-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | Aircraft Ltd | Airworthiness Directives; Pilatus Aircraft Ltd. Model PC-6 Airplanes |
Unsafe Condition
Cracks in the ribs of the inboard integral fuel tanks in the left and right wings, which could lead to wing failure during flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the ribs in the inboard integral fuel tanks and related structure in the left and right wings for crack damage, inspect the upper and lower wing skins for damage, and determine if the inboard fuel tank vent system is installed. Correct any crack damage as repairable in the service bulletin or obtain a repair scheme from the manufacturer. Install the inboard fuel tank vent system if not already installed.
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 August 15, 2003, unless already accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pilatus Aircraft Ltd. Model PC-6 airplanes, all manufacturer serial numbers (MSN) up to and including 939, that are certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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