AD 93-07-07
Unsafe Condition
Fuel leakage in the rear fuselage due to insufficient clearance between the APU fuel supply tube assembly and aircraft structure, potentially causing chafing or contact.
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Required Actions
Inspect the APU fuel supply tube assembly's clearance from aircraft structure within 6 months after June 1, 1993. If chafed or touching structure, replace the assembly before further flight. If clearance is less than 3 mm but not chafed, replace within 3 months after inspection. Use Fokker Service Bulletin SBF100-28-022.
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Compliance Time
Within 6 months after the effective date of this AD
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Affected Aircraft
FOKKER Model F28 Mark 0100 series airplanes; serial numbers 11244 through 11339, inclusive, and 11341 through 11351, inclusive; certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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