AD NUMBER: 2007-25-11
MANUFACTURER: Fokker
SUBJECT: Airworthiness Directive 2007-25-11
SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above.

This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority ofanother country to identify and correct an unsafe condition on an aviation product.

The MCAI describes the unsafe condition as: Two events have been reported of Fokker 100 (F.28 Mk.0100) aircraft, where the Nose Landing Gear (NLG) failed to extend in the normal mode and problems were experienced to open the NLG doors, almost preventing extension of the NLG in the emergency (alternate) mode. Subsequent investigation and tests have shown that the friction ofthe bearing in the roller of the NLG Door Uplock Bracket Assembly is high, causing increased resistance in the mechanical system that unlocks the NLG doors.

This condition, if not corrected, may result in a NLG up landing, which is considered a hazardous event.

We are issuing this AD to require actions to correct the unsafe condition on these products.

FMI: www.faa.gov/regulations_policies/airworthiness_directives/