AD 2006-17-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker | F27 Mark 050 | Airworthiness Directives; Fokker Model F27 Mark 050 Airplanes |
Unsafe Condition
Loose leading edges of the elevators, despite fasteners in place, with one stud broken. Fastener attachment holes were elongated and worn out, and fretting damage was found on the elevator front spar and balance weights. Vibration induced by the propeller slipstream caused these discrepancies; stud failure was due to improper fastener installation.
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Required Actions
Inspect the leading edge sections of the elevators to detect loose leading edges and ensure no gap between the sections and the front spar. Determine the type of leading edge installed on the elevators. For certain airplanes, perform repetitive inspections until the leading edge sections of the elevators are modified and sealant is applied, which ends the repetitive inspections.
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Compliance Time
Within 50 flight hours after the effective date of this AD.
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Affected Aircraft
All Fokker Model F27 Mark 050 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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