AD 2007-25-04
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
Severe internal corrosion of the tubes in the engine mount frames, with some corrosion spots exceeding 50 percent of material thickness, could ultimately lead to failure of the engine mounting frame in cases where multiple tubes are severely affected.
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Required Actions
Inspect the engine mount tubing and end fittings for corrosion, report the inspection results to Fokker Services, and take corrective action as necessary, including repair or replacement of corroded tubes and end fittings.
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Compliance Time
Before further flight
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Affected Aircraft
Fokker Model F27 Mark 050 airplanes, certificated in any category, all serial numbers, unless the engine mount frames have been inspected previously in accordance with the Fokker 50/60 Maintenance Review Board (MRB) Document, Task Numbers 712000-00-09 and 712000-00-10.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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