AD 79-20-02

final rule
Data completeness: 70%

FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes

AD Number
79-20-02
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft Fokker Services F27 Mark 100 FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes
aircraft Fokker Services F27 Mark 200 FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes
aircraft Fokker Services F27 Mark 300 FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes
aircraft Fokker Services F27 Mark 400 FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes
aircraft Fokker Services F27 Mark 500 FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes
aircraft Fokker Services F27 Mark 600 FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes
aircraft Fokker Services F27 Mark 700 FOKKER-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 Airplanes

Unsafe Condition

Fatigue failure of improperly machined nose wheel axles (Dowty Rotol P/N 9009Y12).

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Inspect the bore of the nose wheel axle within 500 hours time in service or at the next nose wheel change, whichever comes first. Identify or replace axles based on undercut presence, wall thickness (less than 0.115 inches), or transition smoothness. Inspect spares and ensure compliance with service bulletins or FAA-approved equivalents.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within the next 500 hours time in service after the effective date of this AD or at the next nose wheel change, whichever occurs first.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Fokker-VFW Model F-27 Mark 100, 200, 300, 400, 500, 600, 700 airplanes with Dowty Rotol nose landing gear assembly other than types 200565001, 200568001, or 200678001, excluding serial numbers 10549, 10561, 10562, and 10563, up to serial 10569.

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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