AD 98-02-03
Unsafe Condition
Failure of the hook and latch engagement assemblies of the engine cowl doors due to inadequate engagement, resulting in separation of the lower cowling from the airplane.
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Required Actions
Modify the hook and latch engagement assemblies of the engine cowl doors, measure the aerodynamic mismatch between the fixed cowl and lower cowl door, and repair if necessary.
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Compliance Time
Prior to the accumulation of 2,500 total flight cycles; within 2,500 flight cycles since the last inspection per Fokker Service Bulletin SBF100-71-003; or within 30 days after February 20, 1998.
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Affected Aircraft
Fokker Model F28 Mark 0100 and Mark 0070 series airplanes as listed in Fokker Service Bulletin SBF100-71-019, revised by SBF100-71-019/1.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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