AD 2009-26-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Pilatus | Aircraft Ltd | Airworthiness Directives; PILATUS Aircraft Ltd. Model PC-7 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; PILATUS Aircraft Ltd. Model PC-7 Airplanes |
Unsafe Condition
Cracks caused by stress corrosion in the main-gear support struts made from material AA2024-T351, which has a lower resistance to stress corrosion cracking. Such cracks, if undetected, could lead to the failure of the strut during landing, causing the Main Landing Gear (MLG) to collapse.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the left and right main-gear support struts to determine if they have rounded or chamfered clevis lugs. If chamfered clevis lugs are found, perform a Non-Destructive Inspection (NDI). Replace any cracked main-gear support struts with parts of improved design.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 hours time-in-service (TIS) or 30 days after February 1, 2010, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
PILATUS Aircraft Ltd. Model PC-7 airplanes, manufacturer serial numbers 101 through 618, equipped with main-gear support struts part number (P/N) 532.10.09.039 or P/N 114.48.07.127, 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 4, 2026
Rights: U.S. Government Public Domain
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