AD Amdt-39-10450
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker | F28 Mark 0070 and Mark 0100 | Airworthiness Directives; Fokker Model F28 Mark 0070 and Mark 0100 Series Airplanes |
Unsafe Condition
Leakage of hot air from the corrujoint seals of the low- and high-pressure check valves located in the stubwings could result in heat damage to the fuselage skin and stubwing structure, leading to reduced structural integrity.
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Required Actions
Perform a one-time visual inspection to detect heat damage of the fuselage skin and stubwing structure. Conduct repetitive leak tests of the seals of the bleed air system or repair heat-damaged structure as necessary. Replace corrujoint seals with new improved seals.
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Compliance Time
Before further flight
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Affected Aircraft
Fokker Model F28 Mark 0070 and Mark 0100 series airplanes subject to mandatory continuing airworthiness information by a foreign civil airworthiness authority.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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