AD Amdt-39-10558

final rule
Data completeness: 70%

Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-6, PC- 6/A, PC-6/B, and PC-6/C Series Airplanes

AD Number
Amdt-39-10558
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-CE-09-AD
FR Citation
63 FR 30370

Applicability

TypeManufacturerModelDetails
aircraft Pilatus Aircraft Ltd Airworthiness Directives; Pilatus Aircraft Ltd. Models PC-6, PC- 6/A, PC-6/B, and PC-6/C Series Airplanes

Unsafe Condition

Engine fuel starvation during maximum climb and descent caused by poor fuel tank venting with low fuel levels could result in 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 the engine.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

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/A, PC-6/B, and PC-6/C series airplanes equipped with turbo-prop engines.

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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