AD 99-18-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker Services | F27 Mark 050 | Airworthiness Directives; Fokker Model F27 Mark 050 Series Airplanes |
Unsafe Condition
Cracking of the fuselage between stations 15375 and 16275 at the skin splice above the cabin windows, initiated at a scratch in the bonded doubler and growing due to fatigue, leading to fuselage depressurization and reduced structural integrity.
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Required Actions
Perform a one-time eddy current inspection of the fuselage between stations 15375 and 16275 at the skin splice above cabin windows per Fokker Service Bulletin SBF50-53-053. If cracks are found, repair them prior to further flight.
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Compliance Time
Before further flight if cracks are found; otherwise, inspection must be done within 6 months after the effective date (September 15, 1999) or prior to 10,000 total flight cycles, whichever occurs later.
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Affected Aircraft
All Fokker Model F27 Mark 050 series airplanes, regardless of modifications, alterations, or repairs in the affected area.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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