AD 93-08-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker Services | F27 Mark 050 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 100 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 200 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 300 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 400 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 500 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 600 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 700 | Airworthiness Directives; FOKKER Model F27 Series Airplanes |
Unsafe Condition
Reduced structural capability of the wings due to potential cracks in the lower skin at the runout of stringers 2 and 10 near wing stations 6490, 5330, and 6100.
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Required Actions
Inspect the lower skin at the runout of stringers 2 and 10 near wing stations 6490, 5330, and 6100 for cracks per Fokker Service Bulletin F27/57-69. Repair any found cracks prior to further flight using an approved method. Report positive findings to Fokker within 10 days.
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Compliance Time
Varies based on total landings as of the effective date (May 27, 1993): (1) Prior to 20,000 total landings or within 1 year, whichever is later; (2) Prior to 30,000 total landings or within 5 months, whichever is later; (3) Within 2 months for those with 30,000+ landings.
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Affected Aircraft
Fokker Model F27 series airplanes in post-Fokker Service Bulletin F27/57-9 configuration; serial numbers 10115, 10126 through 10684, inclusive; 10686, 10687, and 10689 through 10692, 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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