AD 2006-13-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | Aircraft Ltd | Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 Airplanes |
Unsafe Condition
Engine fuel starvation during maximum climb and descent caused by poor fuel tank venting with low fuel levels, which could result in a loss of engine power during critical phases of flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the fuel system to improve venting between the collector tank, main wing tanks, and engine. Do not install any collector tank or fuel vent system unless the modification requirements are completed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 3 calendar months after the effective date of the AD (July 13, 1998 for Group 1; August 7, 2006 for Group 2), unless already done.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1-H2, PC-6/B2-H2, PC-6/B2-H4, PC-6/C-H2, and PC-6/C1-H2 airplanes equipped with turbo-prop engines, including those produced under a licensing agreement with Fairchild Republic Company, Fairchild Heli Porter, or Fairchild-Hiller Corporation.
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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