We at Duncan Aviation strongly recommend complying with Service Bulletin 196 (Falcon 900B) or Service Bulletin 024 (Falcon 900EX, s/n ‹ 20) at the next “C” inspection. This Bulletin provides inspection and corrosion protection on the top surfaces of the LH and RH group 2 fuel tanks. Even though these bulletins have been out for a number of years, there are still aircraft that are not in compliance. On pre-bulletin aircraft, the corrosion has to migrate past vent line protection cups to be noticed, and the potential to be severe at that point is high.
For more information about this Service Bulletin, contact your Duncan Aviation Falcon Tech Rep.
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