AD 93-09-12
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
Failure of the main landing gear (MLG) due to cracks in the upper members.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a high frequency eddy current inspection to detect cracks in the MLG upper members within 9 months after the effective date. If no crack is found, mark the upper members. If cracks are found, replace the cracked upper member with an inspected or reworked one. Rework un-reworked upper members within 12,000 landings since last overhaul or 6 months after the effective date, whichever is later. Report cracks exceeding 0.1 inch to Dowty Aerospace. Follow Fokker Service Bulletin F27/32-162.
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Compliance Time
Within 9 months after the effective date of this AD for the initial inspection; within 12,000 landings since the last overhaul or 6 months after the effective date, whichever occurs later, for rework.
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Affected Aircraft
Fokker Model F27 series airplanes with serial numbers 10102 through 10684, inclusive, 10686, 10687, and 10689 through 10692, inclusive, equipped with Dowty Rotol main undercarriage upper members P/N 200463301, 200251300, 200251301, 200567300, or 200680300.
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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