HALO FLIGHT INC

Sanction: $6,000 · case closed 2011-04-27

Part: FLEX LINE — CRACKED (A/C PACK) · airframe 6,664 hrs · 23,286 cycles

AIR COMM AIR CONDITIONING SYSTEM HIGH PRESSURE LINE LOCATED AT COMPRESSOR TO ENGINE DECK CONTINUOUSLY LEAKING AND HAVING TO REPLACE. THIS LINE DOES NOT LEAK AT THE SAME POINT ALL THE TIME BUT AT DIFFERENT LOCATIONS. WE HAVE REPLACED 4 LINES NOW IN 221.4 HRS OF OPERATION.

Part: TORQUEMETER — BLOCKED (GEARBOX) · airframe 3,763 hrs

PILOT EXPERIENCED HIGH TORQUE INDICATION ON INSTRUMENT. TROUBLESHOOTING WAS PERFORMED AND FOUND TO BE INTERNAL TO THE ENGINE GEARBOX TORQUEMETER. UPON REMOVAL OF ENGINE, DELIVERY TO OVERHAUL FACILITY, AND DISASSEMBLY OF GEARBOX AND TORQUEMETER, PLASTIC MEDIA WAS DISCOVERED INTERNAL TO TORQUEMETER.

Part: BOLT — DAMAGED (ENGINE)

THE ENGINE WAS SPLIT AT THE (C) FLANGE. AFTER REMOVAL OF THE C.T. DISC, IT WAS NOTED THAT 2 BOLTS HOLDING THE INNER EXIT DUCT TO THE ENGINE HAD SHEARED OFF AND WERE LODGED IN THE AREA, WITH THE REMAINDER OF THE BOLT SHANKS LEFT IN THE BOLT HOLES. DAMAGE WAS NOTED ON THE C.T. DISC. SAFETY WIRE WAS PRESENT IN ALL THE BOLTS INCLUDING THE SHEARED BOLT HEADS.

Part: BOLT — BACKED OUT (COMPRESSOR)

PILOT REPORTS (GRINDING) SOUND WHEN PROPELLER IS SPUN BY HAND. THE ENGINE WAS SPLIT AT THE (C) FLANGE WHERE DEBRIS WAS NOTED AT THE 6 O'CLOCK AREA BETWEEN THE COMPRESSOR TURBINE BLADES AND SHROUD SEGMENTS. AFTER REMOVAL OF THE CT DISK, IT WAS NOTED THAT FOUR BOLTS HOLDING THE INNER EXIT DUCT TO THE ENGINE WERE MISSING. THE DEBRIS WERE THE REMAINS OF THE FOUR BOLTS. SAFETY WIRE WAS NOT PRESENT IN THE REMAINING FOUR BOLTS. 370 HOURS SINCE ENGINE O/H.