AD 2016-17-07
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
Stress corrosion cracking on the main frame on frame 11 left fitting part number 112.35.07.489 and right fitting part number 112.35.07.490, which can cause potential loss of the horizontal stabilizer.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Check the material specification of the Frame 11 left and right fittings following the instructions in PILATUS Aircraft Ltd. PC-7 Service Bulletin No: 53-013. If fittings made of aluminum alloy AA2124-T851 are found, report the inspection results following the procedures in the service bulletin.
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Compliance Time
Within 120 days after September 30, 2016 (effective date of the AD).
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Affected Aircraft
PILATUS Aircraft Ltd. Model PC-7 airplanes, manufacturer serial numbers 101 through 618, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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