Summary
We propose to adopt a new airworthiness directive (AD) for the products listed above. This proposed 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:
Corrosion damage has been found on the aft pressure bulkhead of SAAB 2000 aeroplanes, located on the rear side of the bulkhead at the bottom outboard flange. Corrosion damage in this area can become the starting point for future crack initiation and propagation.
This condition, if not detected and corrected, could affect the structural integrity of the aft pressure bulkhead, possibly resulting in in-flight decompression of the fuselage and injury to occupants. * * * * *
The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.