Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Engineer; Flight Crew Flight Instructor
Flight Crew Last 90 Days 10; Flight Crew Total 27000; Flight Crew Type 40
Situational Awareness
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General Maintenance Action
Aircraft; Human Factors; Procedure
Aircraft was modified with an STC engine change. During engine change the engine mount; between engine and firewall; was modified which was outside the STC specification. Further; exhaust system was installed incorrectly thus partially separating from engine cylinders in flight.
Cessna 175 pilot reported that the aircraft was removed from service due to maintenance issues that were not in compliance with FARs.