The following information is derived from the FAA's Service Difficulty Reports and Aviation Maintenance Alerts. During annual inspection, overboard exhaust pipe was discovered cracked and leaking at the waste gate attach flange. Part total time: Unknown Overboard exhaust elbow, between the wastegate and the tailpipe disengaged by the slip-joint from wastegate flange, p/n .1250992-4. No clamp "failure was evident. Part total time: 604.0 hours The right exhaust tailpipe was found incorrectly installed or manufactured. During flight, the tailpipe chafed the firewall, p/n 2813102-8, and the flame shield p/n 2813100-13, resulting in a hole through the firewall.
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