King Air C90 E90
Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 125; Flight Crew Total 2200; Flight Crew Type 1200
Human-Machine Interface
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Human Factors
Upon post flight and securing aircraft it was discovered that the right engine intake plug was in the right intake wedged in the ice vane.  As I reviewed the flight after discovering the plug; several things were noted.  Start temperature on the right engine was 670 degrees (still within start limits); battery voltage was 23.0 volts.  Start temperature on the left engine was 530 degrees.  Takeoff temperatures and performance were within normal limits.  It was noted that during all phases of flight the right engine ran 100 degrees hotter than the left but no more than 600 degrees.  Left engine during all phases of flight ran approximately 500 degrees.  Cruising altitude was 11;000.  No temperature excursions were noted in the right engine that were out of limits.  When I looked at the intake plug it was wedged longitudinally in the ice vane.
King air pilot discovers post flight that the right engine intake plug was in the right intake wedged in the ice vane.