AD NUMBER: 2008-09-06 R1

MANUFACTURER: Saab AB, Saab Aerosystems Model SAAB 340A (SAAB/SF340A) and SAAB 340B Airplanes
SUBJECT: Airworthiness Directive 2008-09-06 R1

SUMMARY: We are adopting a new airworthiness directive (AD) for the products listed above that would revise an existing AD. 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:

Subsequent to accidents involving Fuel Tank System explosions in flight  and on ground,  Special Federal Aviation Regulation 88 (SFAR88) required a safety review of the aircraft Fuel Tank System.

Fuel Airworthiness Limitations are items arising from a systems safety analysis that have been shown to have failure mode(s) associated with an `unsafe condition'. These are identified in Failure Conditions for which an unacceptable probability of ignition risk could exist if specific tasks and/or practices are not performed in accordance with the manufacturers' requirements.

This AD requires actions that are intended to address the unsafe condition described in the MCAI.

FMI: http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/058D80636C6EB4D68625766600560C93?OpenDocument