AD NUMBER: PL2006-17-51
SUBJECT: Airworthiness Directive 2006-17-51
SUMMARY: This Emergency Airworthiness Directive
(AD) is prompted by several reports of tailpipe assembly cracks on
Agusta AB139 helicopters.
This condition, if not corrected, could result in a fire due to
the structure in the cowlingarea overheating, separation of a part
or a tailpipe assembly, and subsequent loss of control of the