N779TA

Part: BOLT — SHEARED (TE FLAPS) · airframe 40,184 hrs

RIGHT FLAP OUTBOARD ACTUATOR BOLT SHEARED. REPLACED BOLT AND INSPECTED FLAP AND CARRIAGE SYSTEM, OK FOR SERVICE. INSTALLED NEW NUT AND WASHER. OP CHECKED GOOD.

Part: THERMOSTAT — SHORTED (NR 1 ENGINE) · airframe 40,000 hrs

NR 1 ENGINE OIL TEMPERATURE CIRCUIT BREAKER POPPED, COULD NOT BE RESET. REPLACED NR 1 ENGINE OIL THERMOSTAT. LEAK AND OP CHECKED GOOD.

Part: SPARK PLUG — CRACKED (NR 16 CYLINDER) · airframe 39,995 hrs

NR 3 ENGINE SHUT DOWN DUE TO NR 10 CYLINDER DOUBLE SHORTED SECONDARY. REMOVED AND INSPECTED NR 10 CYLINDER SPARK PLUGS, FOUND NO DEFECTS. SHORTED NR 10 CYLINDER TO VERIFY TIMING. FOUND TO BE OFF 6 PATTERNS. REMOVED AND REPLACED NR 16 CYLINDER FRONT SPARK PLUG FOR CRACKED CERAMIC AND NR 16 CYLINDER REAR PLUG AND SHORT LEAD. OP CHECKED GOOD.

Part: CYLINDER — FAILED (NR 16) · airframe 39,958 hrs

NR 4 ENGINE SHUT DOWN DUE TO BACK FIRING WHEN LEAN AND RUNNING ROUGH. NR 16 CYLINDER SHOWS LOW COMPRESSION. REPLACED NR 16 CYLINDER. OPS CHECKED GOOD.

Part: CYLINDER — DAMAGED (NR 5) · airframe 39,917 hrs

NR 2 ENGINE SHUT DOWN DUE TO BACK FIRING. REPLACED NR 5 CYLINDER DUE TO LOW COMPRESSION. OPS CHECKED GOOD.

Part: STRINGER — CORRODED (FUSELAGE) · corrosion level 2 · airframe 39,906 hrs

RIGHT FUSELAGE HAS SURFACE CORROSION AT STA 926 STRINGER 25. CUT OUT CORROSION. DAMAGE CUTOUT 3/4 INCH. FABRICATED AND INSTALLED DOUBLER. .040 7075-T6, DIMPLED ORIGINAL HOLES REF DOUGLAS OHM 12-36 FIG 12-22.

Part: CYLINDER — CRACKED (ENGINE) · airframe 69,899 hrs

NR 3 ENGINE, NR 18 CYLINDER RIGHT AND LEFT LOW COMPRESSION. CHECKED NR 18 CYLINDER AND SYNC GENERATOR, BOTH CHECKED GOOD. FOUND NR 11 CYLINDER WITH A CRACKED HEAD, REPLACED CYLINDER. CHECKED GOOD.

Part: SPARK PLUG — CRACKED (NR 18 CYLINDER) · airframe 39,814 hrs

ABORTED TAKEOFF DUE TO NR 2 ENGINE LOW FUEL FLOW AND LOW BMEP. REPLACED NR 18 CYLINDER FRONT PLUG (CRACKED CERAMIC), NR 8 CYLINDER REAR INTERMITTENT, BOTH PLUGS REPLACED. REPLACED NR 18 CYLINDER REAR PLUG. INSPECTED CARBURETOR AND FIRE WALL SHUT OFF FOR RIGGING. PERFORMED BARO RUN, ALL CHECKED GOOD. PERFORMED WET TAKEOFF RUN, DRY TAKEOFF RUN, ALL CHECKED GOOD. NEVER GOT LOW FUEL FLOW.

Part: CARBURETOR — MALFUNCTIONED (ENGINE) · airframe 39,816 hrs

ABORTED TAKEOFF DUE TO LOW FUEL FLOW AND LOW BMEP. BARO ENGINE CHECK SHOWED NORMAL PARAMETERS. REPLACED NR 2 ENGINE CARBURETOR AND FUEL FEED VALVE. CHECKED GOOD.

Part: ENGINE — MALFUNCTIONED (NR 2) · airframe 39,814 hrs

ABORTED TAKE OFF DUE TO NR 2 ENGINE LOW FUEL FLOW AND LOW BMEP. PERFORMED 30 IN FIELD BARO ENGINE OP CHECK IAW OPS MANUAL SECT. 9.20. ALL PARAMETERS NORMAL, NO DEFECTS NOTED.

Part: CYLINDER — CRACKED (NR 17) · airframe 39,813 hrs

NR 1 ENGINE SHUT DOWN DUE TO EXCESSIVE SMOKE AND RUNNING ROUGH. REPLACED NR 17 CYLINDER DUE TO A CRACKED HEAD. CHECKED GOOD.

Part: CASE — LEAKING (ENGINE NOSE) · airframe 39,751 hrs

NR 1 ENGINE SHUT DOWN DUE TO EXCESSIVE OIL LOSS. REPLACED NR 1 ENGINE NOSE CASE ASSEMBLY DUE TO A BLOWN ACCESSORY PLUG.

Part: GOVERNOR — UNCONTROLLABLE (NR 1 PROP) · airframe 39,718 hrs

NR 1 PROPELLER UNCONTROLLABLE, WOULD NOT FEATHER. OVERSPEED TO APPROXIMATELY 3300. INSPECTED ENGINE FINGER SCREENS, NO NOTEABLE FINDINGS. REPLACED NR 1 PROPELLER GOVERNOR. CHECKED GOOD.

Part: CYLINDER HEAD — CRACKED (NR 3) · airframe 39,668 hrs

NR 4 ENGINE SHUT DOWN DUE TO EXCESSIVE OIL LOSS. REPLACED NR 3 CYLINDER DUE TO CRACKED HEAD. CHECKED GOOD.

Part: CASE — LEAKING (NR 4 ENGINE) · airframe 39,645 hrs

NR 4 ENGINE SHUT DOWN DUE TO EXCESSIVE OIL LEAK. REPLACED NOSE CASE ASSEMBLY DUE TO A BLOWN ACCESSORY PLUG.

Part: CAM — FAILED (NR 12 CYLINDER) · airframe 39,555 hrs

NR 2 ENGINE SHUT DOWN DUE TO NR 12 CYLINDER DOUBLE SHORTED SECONDARY AND RUNNING ROUGH. REPLACED ENGINE DUE TO FRONT CAM FAILURE. CHECKED GOOD.

Part: SPARK PLUG — FOULED (ENGINE) · airframe 39,038 hrs

NR 3 ENGINE SHUT DOWN DUE TO NR 14 CYLINDER DOUBLE SHORTED SECONDARY. REPLACED SPARK PLUGS, SHORT LEADS AND RESET VALVE CLEARANCES. CHECKED GOOD.

Part: CYLINDER — FAILED (NR 4 ENGINE) · airframe 38,985 hrs

NR 4 ENGINE SHUT DOWN DUE TO RUNNING ROUGH. REPLACED NR 4 ENGINE, NR 11 CYLINDER DUE TO NO COMPRESSION. CHECKED GOOD.

Part: SPARK PLUG — CRACKED (ENG CYLINDER) · airframe 38,945 hrs

NR 4 ENGINE SHUT DOWN DUE TO BACK FIRING, NR 13 CYLINDER DOUBLE SHORTED SECONDARY. ADJUSTED VALVES AND REPLACED BOTH FRONT & REAR PLUGS ON NR 13 CYLINDER DUE TO CRACKED CERAMICS. CHECKED GOOD.

Part: VALVE SEAT — POWER LOSS (NR 2 CYLINDER) · airframe 38,858 hrs

NR 3 ENGINE SHUT DOWN DUE TO LOSS OF BMEP, AND LOW COMPRESSION. REPLACED NR 3 ENGINE , NR 2 CYLINDER. (STUCK VALVE SEAT). CHECKED GOOD.

Part: ENGINE — MAKING METAL (NR 1) · airframe 38,801 hrs

NR 1 ENGINE PRECAUTIONARY SHUT DOWN DUE TO DOUBLE SHORTED SECONDARY AND LOSS OF OIL. REPLACED NR 1 ENGINE DUE TO MAKING METAL.

Part: BRUSHES — BROKEN (DISTRIBUTOR) · airframe 38,766 hrs

NR 2 ENGINE SHUT DOWN DUE TO L-2 PRIMARY CIRCUIT OPEN. FOUND BROKEN BRUSHES, REPLACED LT DISTRIBUTOR. CHECKED GOOD.

Part: THERMOSTAT — MALFUNCTIONED (NR 2 OIL TEMP) · airframe 38,691 hrs

NR 2 ENGINE SHUT DOWN DUE TO EXCESSIVE OIL TEMPERATURE. REPLACED NR 2 ENGINE OIL TEMPERATURE THERMOSTAT. CHECKED GOOD.

Part: CYLINDER — CRACKED (NR 11) · airframe 38,167 hrs

NR 2 ENGINE BACK FIRING AT FULL RICH AND LOSS OF BMEP. REPLACED NR 2 ENGINE, NR 11 CYLINDER.

Part: ACTUATOR — INOPERATIVE (NR 3 ENGINE) · airframe 38,101 hrs

NR 3 ENGINE SHUT DOWN DUE TO OIL COOLER DOOR NOT OPERATING. REPLACED OIL COOLER DOOR ACTUATOR.

Part: CYLINDER — CRACKED (15) · airframe 37,919 hrs

DISCREPANCY: #3 ENGINE SHUT DOWN DUE TO BACK FIRING.CORRECTIVE ACTION: REPLACED #15 CYLINDER.

Part: SPARK PLUG — CRACKED (10) · airframe 37,830 hrs

DISCREPANCY: #2 ENGINE SHUT DOWN DUE TO #10 CYLINDER DOUBLE SHORTED SECONDARY AND RUNNING ROUGH.CORRECTIVE ACTION: REPLACED FRONT AND REAR SPARK PLUGS.

Part: CYLINDER — CRACKED (4) · airframe 37,854 hrs

DISCREPANCY: #4 ENGINE PRECAUTIONARY SHUT DOWN DUE TO BACK FIRING, ANALYZER READS #4 CYLINDER LOW COMPRESSION BOTH SIDES.CORRECTIVE ACTION: REPLACED #4 ENGINE #4 CYLINDER.

Part: CYLINDER HEAD — CRACKED (NR 4 CYLINDER) · airframe 37,560 hrs

NR 2 ENGINE PRECAUTIONARY SHUT DOWN, RUNNING ROUGH. REPLACED NR 4 CYLINDER FOR A CRACKED HEAD, OP CHECK GOOD.

Part: CYLINDER — CRACKED (NR 4 ENGINE) · airframe 37,398 hrs

FEATHERED THE NR 4 ENGINE IN CRUISE DUE TO BACKFIRED, LOW BMEP. REPLACED THE NR 3 CYLINDER.

Part: CYLINDER — CRACKED (NR 4 ENGINE) · airframe 37,379 hrs

NR 4 ENGINE FEATHERED DUE TO BACKFIRING. REMOVED AND REPLACED THE NR 18 CYLINDER.

Part: CYLINDER — CRACKED (NR 3 ENGINE) · airframe 37,340 hrs

FEATHERED THE NR 3 ENGINE AT 0312Z DUE TO BACKFIRING AND ROUGH RUNNING. REPLACED THE NR 4 CYLINDER.

Part: CYLINDER — CRACKED (NR 3 ENGINE) · airframe 37,163 hrs

NR 4 ENGINE PRECAUTIONARY SHUT DOWN, ENGINE WOULDN'T TAKE A LEAN, BACKFIRED AND RUNNING ROUGH. REMOVED AND REPLACED THE NR 3 CYLINDER ON THE NR 4 ENGINE.

Part: CYLINDER — CRACKED (NR 1 ENGINE) · airframe 37,053 hrs

NR 1 ENGINE SHUT DOWN AT 0210Z DUE TO THE RUNNING ROUGH. REPLACED THE NR 1 CYLINDER ON THE NR 1 ENGINE.

Part: CYLINDER — CRACKED (NR 3 ENGINE) · airframe 36,990 hrs

PRECAUTIONARY SHUT DOWN NR 3 ENGINE IN CRUISE DUE TO BACKFIRING AT ALL POWER SETTINGS. REMOVED AND REPLACED THE NR 16 CYLINDER ON THE NR 3 ENGINE.

Part: SKIN — CORRODED (FUSELAGE) · corrosion level 2 · airframe 36,972 hrs

FORWARD FUSELAGE, COPILOTS SLIDING WINDOW FRAME DOUBLER SURFACE CORROSION AND LIFTING AFT LOWER CORNER, AND TOP AFT CORNER. REMOVED COPILOTS FACTORY WINDOW DOUBLER, REMOVED THREE DAMAGED SECTIONS OF SKIN. FABRICATED TWO DOUBLERS AND SHIMS. INSTALLED SHIMS, DOUBLERS AND WINDOW DOUBLER.

Part: SPARK PLUG — DAMAGED (NR 3 ENGINE) · airframe 36,861 hrs

NR 3 ENGINE NR 4 CYLINDER DOUBLE SHORTED SECONDARY, BACKFIRING. REPLACED BOTH RIGHT AND LEFT SPARK PLUGS.

Part: CYLINDER — CRACKED (#1) · airframe 36,658 hrs

DISCREPANCY: Shut down #1 engine at 2337Z due to excessive oil loss.CORRECTIVE ACTION: Replaced #1 cylinder on the #1 engine.

Part: CARBURETOR — DEFECTIVE (NR 2 ENGINE) · airframe 36,597 hrs

NR 2 ENGINE SHUT DOWN DUE TO ERRATIC BMEP, ROUGH RUNNING, AND RAPID LOSS OF CHT. REPLACED NR 2 ENGINE CARBURETOR.

Part: CYLINDER — CRACKED (#2 ENGINE) · airframe 36,316 hrs

DISCREPANCEY: Precautionary shut down #2 engine due to running rough, #4 and #7 cylinder low compression.CORRECTIVE ACTION: Replaced #4 cylinder.

Part: CYLINDER — CRACKED (ENGINE) · airframe 36,157 hrs

DISCREPANCY: #4 Engine will not take a lean & #17 cylinder shows no compression on analyzer.CORRECTIVE ACTION: Replaced the #4 cylinder assy.

Part: CYLINDER — CRACKED (NR 3 ENGINE) · airframe 35,534 hrs

SHUT DOWN NR 3 ENGINE IN FLIGHT AT 23:55 (PRECAUTIONARY-DUE TO ROUGHNESS). REPLACED NR 17 CYLINDER DUE TO CRACKED HEAD.

Part: SWITCH — ERRATIC (COCKPIT) · airframe 35,232 hrs

UNDER FLOOR FIRE INDICATION. INSPECTED CABIN HEATER COMPARTMENT, NO INDICATION OF FIRE FOUND. REPLACED RIGHT BANK OF CO2 BOTTLES, BLOW-OUT DISC, RESET OUTFLOW VALVE, RESET CABIN SUPERCHARGER CLUTCHES AND REPLACED CABIN HEATER COMPARTMENT FIRE DETECTION TEST BUTTON AFTER TEST SWITCH WAS FOUND TO BE ERRATIC.

Part: CYLINDER — CRACKED (NR 2 ENGINE) · airframe 1,352 hrs

FEATHERED NR 2 ENGINE AT 1652Z AFTER IT BACKFIRED AND QUIT ON FINAL APPROACH. REPLACED NR 18 CYLINDER ASSEMBLY.

Part: CYLINDER ASSY — CRACKED (NR 1 ENGINE)

FLT 312 - SHUTDOWN NR 1 ENGINE AT 1830Z DUE TO BACKFIRING IN RICH AND MANUAL LEAN. AIRCRAFT FERRIED TO ANC FROM ENM. MX REPLACED NR 13 CYLINDER ASSY DUE TO CRACKED HEAD. AIRCRAFT RETURNED TO SERVICE. (M)