AD 97-21-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | EADS CASA | CN-235 | Airworthiness Directives; CONSTRUCCIONES AERONAUTICAS, S.A. CASA Model CN-235 Series Airplanes |
| aircraft | EADS CASA | CN-235-100 | Airworthiness Directives; CONSTRUCCIONES AERONAUTICAS, S.A. CASA Model CN-235 Series Airplanes |
| aircraft | EADS CASA | CN-235-200 | Airworthiness Directives; CONSTRUCCIONES AERONAUTICAS, S.A. CASA Model CN-235 Series Airplanes |
Unsafe Condition
Fatigue cracking in the area of the center wing-to-fuselage attachment fitting, which could reduce the structural integrity of this area.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove parts and items in the center wing-to-fuselage attachment area, conduct a visual inspection with a 10x magnifier to detect cracking, and install a reinforcing plate (CASA P/N 35-25010-0101). If cracking is found, repair it prior to further flight and before installing the plate.
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Compliance Time
Prior to the accumulation of 17,000 total landings for non-military airplanes and 15,000 total landings for military airplanes.
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Affected Aircraft
CONSTRUCCIONES AERONAUTICAS, S.A. CASA Model CN-235 series airplanes listed in SB-235-53-20 (non-military) and SB-235-53-20M (military).
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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