AD 88-24-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker Services | F.28 Mark 0070 | Airworthiness Directives; FOKKER B.V. Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 0100 | Airworthiness Directives; FOKKER B.V. Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 1000 | Airworthiness Directives; FOKKER B.V. Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 2000 | Airworthiness Directives; FOKKER B.V. Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 3000 | Airworthiness Directives; FOKKER B.V. Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 4000 | Airworthiness Directives; FOKKER B.V. Model F-28 Series Airplanes |
Unsafe Condition
Structural failure in the flap or rear spar web and fuel leakage due to non-parallel flanges of the flap track beam support bracket.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct an external visual inspection of the flap track beam support bracket for position per Part 1 of F28/57-81. If flanges are not parallel to the rear spar, inspect for cracks in the rear spar web per Part 2 of F28/57-81 before further flight. If cracks or spotface are found, repair per approved methods or temporary repairs per Part 4 of F28/57-81. Repeat inspections every 1,000 flight cycles until internal inspection is done per Part 3. Alternate compliance may be approved by FAA.
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Compliance Time
Prior to the accumulation of either 10,000 flight hours or 20,000 flight cycles (landings), or within 500 flight cycles (landings) after the effective date of this AD, whichever occurs later.
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Affected Aircraft
Fokker B.V. Model F-28 series airplanes, Serial Numbers 11003 to 11241 inclusive, 11991, and 11992, 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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