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:
A CAP 10B experienced an emergency landing after its front fuel tank collapsed and rendered inoperative the left rudder pedals which were blocked in neutral position. Investigation and the metallurgical examination revealed that the fuel tank straps had fractured as a result of fatigue. The tank support straps had logged around 7000 hours time-in-service (TIS). DGAC France Airworthiness Directive (AD) F-2004-071 was issued to introduce a 4000 hour life-limit for the tank support straps and to require replacement of straps which had exceeded this life-limit. Since then, a front tank support has been found damaged during an inspection before reaching 4000 hours TIS.
The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.