STEELMAN AVIATION INC

PILOT REPORTED LOSS OF RUDDER TRIM. NO VOLTAGE NOTED AT A135 PIN R. REMOVED FWD CENTER CONSOLE PANEL WITH TRIM INTERRUPT SWITCH. 28V INPUT POWER VERIFIED AT PNL133 PIN 1. BACKPINNED PIN 7 ON PNL133 AND FOUND NO OUTPUT POWER. BENCH CHECKED PNL133 AND FOUND NO CONTINUITY.

PILOT REPORTED AN UNCOMMANDED LOSS OF THRUST DURING INITIAL CLIMB AFTER TAKING OFF. AFTER REVIEW WITH PILATUS, P&WC, HONEYWELL AND ENGINEERING DEPARTMENTS, NO FAULTS WHERE FOUND. HOWEVER, THE PILOT REPORTED HE DID NOT MOVE THE PCL AND HE COULD NOT GET MAX POWER WITH PCL FULL FORWARD IN TAKEOFF DETENT.

LIFT DUMP FAIL CAS MESSAGE. SHOP CLEARED MESSAGE RAN ALL TEST OPERATIONAL CHECK GOOD.

REDS WARNING MESSAGE REGARDING CABIN ALTITUDE EMERGED WITH BOTH CKPT AND CAB INDICATIONS SHOWING YELLOW CROSSES ON ENVIRONMENTAL MFD.

PILOT REPORTED RIGHT SIDE WINDOW CRACKED AT 41000

DEPARTED ON A FLIGHT TO KFTW, ABOUT 25 MINUTES INTO THE FLIGHT, LEVELING AT FL230 AND TALKING WITH LA CENTER, A BANG WAS HEARD, SIMILAR TO SOMETHING BEING DROPPED ON THE CABIN FLOOR. SHORTLY AFTER YELLOW ACS LOW INFLOW LIGHT ILLUMINATED ON CAS. ACS LOW INFLOW CHECKLIST WAS INITIATED WHILE NOTICING A SLOW RISE IN CABIN ALTITUDE. CONTACTED LA CENTER FOR A DESCENT DOWN TO 10,000 WHILE IN VMC CONDITIONS. WERE ASKED WHETHER WE WANTED TO DECLARE EMERGENCY BUT RESPONDED REQUEST RETURN TO KVGT UNPRESSURIZED. EMERGENCY DESCENT MODE DID ACTIVATE ON OUR DESCENT BUT AUTOPILOT WAS DISCONNECTED SHORTLY AFTER TO FEEL CONTROL WHEEL PRESSURES WHICH FELT NORMAL. LANDED. DID NOT REQUEST AN EMERGENCY.

PILOT REPORTS LEFT HAND FUEL GAUGE GOES BLANK AND BELIEVES THE FUEL BALANCING SYSTEM DOES NOT WORK. WESTERN AIRCRAFT HAS TROUBLE SHOT SYSTEM FOUND NO DEFECTS. CLEANED CANNON PLUGS AND RESEATED. FUEL BALANCING SYSTEM OPERATIONAL CHECK GOOD.

DURING CRUISE FLIGHT THE PILOT OBSERVED THE OIL PRESSURE DROPPING AND OIL COMING FROM THE ENGINE COWLING. AS THE FLIGHT CONTINUED THE OIL PRESSURE KEPT DROPPING AND OIL CONTINUED TO STREAM OUT OF THE ENGINE. THE PILOT MADE THE DECISION TO DIVERT TO A DIFFERENT AIRPORT. THE PILOT NOTICED THE OIL PRESSURE DROPPING EVEN FURTHER AND WAS NOW IN THE RED AND BELOW 10 PSI. SHE DECLARED AN EMERGENCY AND MADE AN UNEVENTFUL LANDING AT MCCARRAN INTERNATIONAL AIRPORT. MAINTENANCE ARRIVED AT THE AIRCRAFT AND INVESTIGATED THE OIL LEAK. THEY DISCOVERED A OIL PRESSURE LINE HAD COME COMPLETELY DISCONNECTED FROM THE TORQUE LIMITER ON THE ENGINE WHICH CAUSED THE LEAK.