AD 2008-13-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker | F27 Mark 050 | Airworthiness Directives; Fokker Model F27 Mark 050 Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Fokker Model F27 Mark 050 Airplanes |
Unsafe Condition
Welding defects in Fokker 50 (F27 Mark 050) engine mounting frames, where unintentional sideways movement of the electric arc resulted in welds running beside the borderline for a part of the tube circumference, directly affecting the structural integrity of the engine mounting frame connections. This could lead to failure of the engine mounting frame in cases where multiple welds are severely affected, potentially resulting in in-flight loss of an engine.
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Required Actions
Inspect engine mounting frames using non-destructive test (NDT) methods to identify welding defects. Repair or replace affected engine mounting frames as necessary, following Fokker's repair instructions.
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Compliance Time
Before further flight
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Affected Aircraft
Fokker Model F27 Mark 050 airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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