AD 89-04-06 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Fokker Services | F27 Mark 050 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 100 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 200 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 300 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 400 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 500 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 600 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
| aircraft | Fokker Services | F27 Mark 700 | Airworthiness Directives; FOKKER Model F-27 Series Airplanes |
Unsafe Condition
Engine separation and subsequent structural damage to the airplane aft of the engine due to self-tapping screws on nacelle brace struts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect both right and left upper nacelle brace struts in accordance with Fokker Service Bulletin F27/54-44 (or Revision 1 for specified serial numbers). Replace the brace strut if a self-tapping screw is found, prior to 30,000 landings on the strut or within 500 landings after the effective date/AD compliance, whichever is later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 60 days after the effective date of the referenced amendment (March 28, 1989 for airplanes under Service Bulletin F27/54-44; January 3, 1990 for serial numbers 10308-10340 and 10342-10360).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Fokker Model F-27 series airplanes, serial numbers 10102 through 10307, 10308 through 10340, and 10342 through 10360.
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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