AD 2009-18-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker | F | Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100 Series Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Fokker Model F.28 Mark 0070 and 0100 Series Airplanes |
Unsafe Condition
Inadvertent opening of the door lock handle in flight, which could result in rapid decompression of the airplane or ejection of a passenger or crewmember through the door.
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Required Actions
Install a warning placard near the status lights of the door lock indication panel, instructing the cabin crew not to operate the door handle during flight and to inform the flight crew of the 'DOOR NOT LOCKED' indication. Conduct a one-time inspection of the clearance between lever P/N A26997-003 and the Up-Limit Switch. If the clearance deviates from 0.3 mm ± 0.2 mm, adjust the clearance.
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Compliance Time
Within 12 months of the effective date (October 14, 2009)
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Affected Aircraft
Fokker Model F.28 Mark 0070 and 0100 series airplanes, certificated in any category, equipped with a downward-opening 'airstair' type passenger door.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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