AD 2009-26-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Construcciones Aeronauticas, S.A. (CASA), Model CN-235, CN-235-100, CN-235-200, and CN-235-300 Airplanes |
Unsafe Condition
Fatigue cracking of the rear internal support fittings and longerons of the outer flap structure could result in failure of the outer flaps, and consequent reduced controllability of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the attachment zones between the outer flaps and their rear supports using boroscopic inspections. Replace the outer flaps with new designed parts as specified in EADS-CASA Service Bulletin (SB) 235-57-20. Extend the inspection scope to flaps longerons and drill holes to facilitate inspection. Install an improved outer flap replacement kit that includes a new improved longeron.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 12 months of the effective date (February 4, 2010).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Construcciones Aeronauticas, S.A. (CASA) Model CN-235, CN-235-100, CN-235-200, and CN-235-300 airplanes, all serial numbers, if part number (P/N) 35-15501-0001, -0002, -0003, or -0004, or P/N 35-A0736-0001 or -0002 outer flaps are installed.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.