AD NUMBER: 2011-17-03

MANUFACTURER:  Fokker Services B.V. Model F.28 Mark 1000, 2000, 3000, and 4000 Airplanes
SUBJECT: Airworthiness Directive 2011-17-03
ACTION: Final rule.

SUMMARY: This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:

[T]he FAA has published Special Federal Aviation Regulation (SFAR) 88, and the Joint Aviation Authorities (JAA) has published Interim Policy INT/POL/25/12. The review conducted by Fokker Services on the Fokker F28 Type Design in response to these regulations revealed that, under certain failure conditions, a short circuit may develop in the collector tank level float switch wiring. Such a short circuit may result in an ignition source in the tank vapour space.

This condition, if not corrected, could result in a wing fuel tank explosion and consequent loss of the aeroplane.

DATES: This AD becomes effective September 16, 2011.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/68FA1F008AB826E6862578EA00479D26?OpenDocument