AD 89-25-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker Services | F.28 Mark 0070 | Airworthiness Directives; FOKKER Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 0100 | Airworthiness Directives; FOKKER Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 1000 | Airworthiness Directives; FOKKER Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 2000 | Airworthiness Directives; FOKKER Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 3000 | Airworthiness Directives; FOKKER Model F-28 Series Airplanes |
| aircraft | Fokker Services | F.28 Mark 4000 | Airworthiness Directives; FOKKER Model F-28 Series Airplanes |
Unsafe Condition
Fatigue cracks in the rear spar web plate between Wing Stations 4790 and 5280 could reduce structural capability of the wing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform external high-frequency eddy current inspection of the rear spar web plate per Fokker Service Bulletin F28/57-84. If cracks are found, repair prior to further flight. Alternate compliance may be approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Inspect within specified landing intervals based on accumulated landings: 2,000 landings after AD effective date or prior to 35,000 landings (for <45,000 landings); 1,000 landings after AD effective date (for 45,000-55,000 landings); 500 landings after AD effective date (for ≥55,000 landings).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fokker Services Model F-28 series airplanes, Serial Numbers 11003 through 11241, and 11991 and 11992.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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