AD 2009-04-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cessna | Aircraft Company Models 401 | Airworthiness Directives; Cessna Aircraft Company Models 401, 401A, 401B, 402, 402A, and 402B Airplanes |
Unsafe Condition
Fatigue cracking in the auxiliary wing spar near the location where the main landing gear trunnion is mounted, which could result in failure of the wing auxiliary spar web and cause landing gear collapse during normal landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the auxiliary wing spar for cracks near the main landing gear trunnion. Replace immediately if cracks are 0.5 inch or more. Conduct repetitive inspections every 50 hours time-in-service (TIS) with replacement within 200 hours TIS or 12 months, whichever occurs first, if cracks are less than 0.5 inch. Report any cracks found to the FAA and Cessna.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 200 hours TIS or 12 months, whichever occurs first, for cracks less than 0.5 inch. Before further flight for cracks 0.5 inch or more.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Cessna Aircraft Company Models 401, 401A, 401B, 402, 402A, and 402B airplanes, with specific serial number ranges.
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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