AD 85-26-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker Services | F27 Mark 050 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 100 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 200 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 300 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 400 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 500 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 600 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
| aircraft | Fokker Services | F27 Mark 700 | Airworthiness Directives; FOKKER B.V. Model F27 Airplanes |
Unsafe Condition
Collapse of the main landing gear, damage to the elevator trim tab, elevator control bracket support, and elevator control bracket supporting rib structure, and failure of the wing/fuselage joint.
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Required Actions
Inspect and replace the drag stay tube for cracks per Fokker Service Bulletin F27/32-147; modify elevator control bracket structure per F27/55-31; inspect and modify wing/fuselage joint per F27/57-54, Rev 1. Compliance with alternate means may be approved.
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Compliance Time
Within 120 days after January 26, 1986 (for items A and B) or within 180 days after January 26, 1986 or prior to 45,000 landings (whichever is later) for item C.
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Affected Aircraft
Fokker B.V. Model F27 Mark 050, 100, 200, 300, 400, 500, 600 airplanes as specified in the applicability statements of the referenced service bulletins.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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