N2907F

Part: GEAR — STRIPPED (ENGINE BLOWER) · airframe 38,691 hrs

NR 2 ENGINE SHUT DOWN, QUIT ON TAKEOFF. BLOWER GEARS STRIPPED. REPLACED NR 2 ENGINE.

Part: CYLINDER — FAILED (NR 1) · airframe 38,433 hrs

NR 4 ENGINE SHUT DOWN DUE TO RUNNING ROUGH AND DOUBLE SHORTED SECONDARY ON NR 1 CYLINDER. REMOVED AND REPLACED NR 1 CYLINDER DUE TO RING LAND FAILURE, REF: NAC DC-6 MM SECT. V PG. 16 & 16A. CHECK GOOD.

Part: CYLINDER HEAD — CRACKED (ENGINE) · airframe 38,394 hrs

NR 2 ENGINE SHUTDOWN DUE TO HIGH CHT, 150 DEGREES AT IDLE, 250+ DEGREES AT 30 INCHES WITH COWL FLAP AT 6 DEGREES. NR 2 ENGINE, NR 18 CYLINDER CRACKED HEAD. REPLACED NR 18 CYLINDER PER NAC DC-6 MM SECTION V PG 16. OP CHECKED GOOD.

Part: CLUTCH — SLIPPED (NR 4 ENGINE) · airframe 38,204 hrs

NR 4 ENGINE SHUT DOWN DUE TO LOSS OF BMEP, (BMEP TO ZERO), LOSS OF ENGINE BLOWER. REPLACED ENGINE DUE TO CLUTCH FAILURE.

Part: CYLINDER — SEPARATED (NR 1 ENGINE) · airframe 38,041 hrs

NR 1 ENGINE BACKFIRING. ENGINE SHUT DOWN. REPLACED NR 1 ENGINE NR 8 CYLINDER DUE TO SEPERATED FINS FROM CYLINDER LINER. REF: DC-6MM SECT V PG 16 AND 16A. LEAK AND OPS CHECKED GOOD.

Part: HARNESS — CRACKED (NR 2 ENGINE) · airframe 37,899 hrs

NR 2 ENGINE SHUT DOWN, WOULD NOT TAKE A LEAN AND BACKFIRES IN RICH. FOUND CRACKED IGNITION HARNESS. REPLACED HARNESS REF: PURDUE MB 24-1-1. DISTRIBUTOR REPLACED IN REF: PW 2800MM CH 6 1/2. LEAK AND OP CHECKED GOOD.

Part: CLUTCH — FAILED (NR 2 ENGINE) · airframe 37,873 hrs

NR 2 ENGINE DROP IN BMEP, MAP DROPPED TO BAROMETRIC PSI, PRECAUTIONARY ENGINE SHUT DOWN. REPLACED NR 2 ENGINE DUE TO CLUTCH FAILURE REF: DC-6MM SECT V PG. 3-8.

Part: CYLINDER — FAILED (NR 11) · airframe 37,747 hrs

NR 1 ENGINE BACK FIRE ON DESCENT FLIGHT, SUSPECT NR 11 REAR. ENGINE SHUTDOWN. REPLACED NR 11 CYLINDER DUE TO RING LAND FAILURE.

Part: CARBURETOR — FAILED (NR 2 ENGINE) · airframe 37,701 hrs

NR 2 ENGINE SHUTDOWN DUE TO HIGH FUEL FLOW, BMEP FLUCTUATING AND OIL TEMP RISING. REPLACED CARBURETOR.

Part: SKIN — CRACKED (LT WING) · airframe 37,631 hrs

LEFT WING BOTTOM SKIN CRACKED 1.5" LONG AT WING STA 170, AND REAR SPAR. REMOVED DAMAGE, INSTALLED FILLER AND EXTERNAL DOUBLERS IAW BOEING ROD SKETCH JCT03928 AND 8100-9, DATED 29 SEPT 2006.

Part: CASE — SEPARATED (NR 1 ENGINE) · airframe 37,495 hrs

NR 1 ENGINE SHUT DOWN DUE TO OIL LOSS, QUANTITY AND PRESSURE. REPLACED NR 1 ENGINE DUE TO COLLECTOR CASE TO INTERMEDIATE REAR CASE SEPARATION PER NAC DC-6MM SEC V PG 1-9.

Part: CYLINDER — FAILED (NR 3 ENGINE) · airframe 37,434 hrs

NR 3 ENGINE FEATHERED DUE TO LOW COMPRESSION INDICATION ON NR 3 CYLINDER. REPLACED NR 3 CYLINDER ON NR 3 ENGINE DUE TO RING LAND FAILURE. REF: NAC DC-6MM SEC V PGS 16 & 16A.

Part: CYLINDER — CRACKED (ENGINE) · airframe 37,209 hrs

PRECAUTIONARY ENGINE FEATHER ON GROUND DUE TO OIL LOSS AND RUNNING ROUGH. FOUND NR 18 CYLINDER CRACKED. REPLACED NR 18 CYLINDER IAW MM SECT V PG. 16 AND 16A. OP CHECKED GOOD.

Part: WARNING LIGHT — FALSE INDICATION (OIL PRESSURE) · airframe 37,108 hrs

LOW OIL PRESSURE LIGHT ON DURING TAKEOFF ROLL. PERFORMED TAKEOFF POWER CHECK PER NAC DC-6 OP MANUAL SECTION 9.20 PT. 5 ON ENGINES 1, 2, 3, AND 4. NO DEFECTS NOTED. DURING TAKEOFF POWER CHECKS OIL PRESSURES WITHIN LIMITS, NO LOW OIL PRESSURE WARN LIGHT ON. FOUND TO BE OK FOR SERVICE.

Part: CYLINDER — GALLED (NR 2) · airframe 37,099 hrs

NR 4 ENGINE FEATHERED DUE TO NR 2 CYLINDER DOUBLE SHORTED SECONDARY. INSPECTED NR 2 CYLINDER SPARK PLUG AND FOUND TO BE PEENED. REPLACED NR 2 CYLINDER. OP CHECK GOOD.

Part: LATCH — DAMAGED (LT MLG) · airframe 37,031 hrs

LT MAIN GEAR WILL NOT STAY UP WITH GEAR SELECTOR IN NEUTRAL. REPLACED LATCH MECHANISM LINK ASSEMBLY. OPS CHECKED GOOD.

Part: ENGINE — MAKING METAL (NR 3) · airframe 36,629 hrs

NR 3 ENGINE SHUT DOWN DUE TO DOUBLE SHORTED SECONDARY ON NR 10 CYLINDER. PRELIMINARY INSPECTION FOUND INTERNAL FAILURE OF THE NR 3 ENGINE. NR 3 ENGINE REPLACED.

Part: CARBURETOR — POWER LOSS (ENGINE) · airframe 36,164 hrs

NR 2 ENGINE SHUT DOWN DUE TO RUNNING ROUGH, HIGH FUEL FLOW AND LOW BMEP CHT COLD. REMOVED AND REPLACED CARBURETOR. LEAK AND OP CHECK GOOD.

Part: CARBURETOR — POWER LOSS (NR 2 ENGINE) · airframe 36,164 hrs

NR 2 ENGINE SHUT DOWN DUE RUNNING ROUGH, HIGH FUEL FLOW, LOW BMEP AND COLD CHT. REMOVED AND REPLACED NR 2 ENGINE CARBURETOR. OP CHECKED GOOD.

Part: SPARK PLUG — CRACKED (NR 2 CYLINDER) · airframe 35,716 hrs

NR 2 ENGINE SHUT DOWN DUE TO LOW COMPRESSION INDICATION ON NR 2 CYLINDER. REPLACED BOTH SPARK PLUGS ON NR 2 CYLINDER DUE TO CRACKED CERAMICS. CHECKED GOOD.

Part: INTAKE PIPE — RUPTURED (NR 4 ENGINE) · airframe 35,515 hrs

NR 4 ENGINE BACKFIRING ON FINAL AND UPON LANDING. ENGINE SHUT DOWN AFTER LANDING. REPLACED NR 4 ENGINE, NR 15 & 16 Y-PIPE DUE TO BEING RUPTURED. CHECKED GOOD ON RUN.

Part: CAM — FAILED (NR 1 ENGINE) · airframe 35,374 hrs

NR 1 ENGINE SHUTDOWN DUE TO DOUBLE SHORTED SECONDARY ON NR 5 & 13 CYLINDERS. REPLACED NR 1 ENGINE DUE TO REAR CAM FAILURE. CHECKED GOOD.

Part: ENGINE — MAKING METAL (NR 3) · airframe 35,100 hrs

NR 3 ENGINE SHUT DOWN DUE TO LOSS OF BMEP. ENGINE MAKING METAL, REPLACED ENGINE.

Part: SPARK PLUG — CRACKED (NR 4 ENGINE)

NR 4 ENGINE SHUT DOWN DUE TO BACK FIRING AT CRUISE POWER, AUTO RICH. REPLACED NR 6 CYLINDER SPARK PLUGS. CHECKED GOOD.

Part: CYLINDER — CRACKED (NR 17 NR 4 ENG) · airframe 34,931 hrs

NR 4 ENGINE SHUT DOWN DUE TO NR 17 CYLINDER LOW COMPRESSION ON PATTERNS. REPLACED NR 17 CYLINDER. OP CHECKED GOOD.

Part: SPARK PLUG — CRACKED (ENGINE) · airframe 34,911 hrs

NR 4 ENGINE SHUT DOWN DUE TO NR 2 CYLINDER DOUBLE SHORTED SECONDARY. REPLACED NR 4 ENGINE NR 2 CYLINDER FRONT AND REAR SPARK PLUGS.

Part: SPARK PLUG — FOULED (ENGINE) · airframe 34,928 hrs

NR 4 ENGINE , NR 17 CYLINDER BOTH PLUGS SHOWING LOW COMPRESSION PATTERNS. REPLACED NR 2 & NR 9 CYLINDER FRONT & REAR PLUGS DUE TO FOULING. CHECKED GOOD.

Part: CYLINDER — FAILED (NR 4 ENGINE) · airframe 34,829 hrs

NR 4 ENGINE WOULD NOT TAKE A LEAN. DOUBLE SHORTED SECONDARY. REPLACED NR 4 ENGINE NR 16 CYLINDER.

Part: SKIN — CRACKED (FUSELAGE) · airframe 34,698 hrs

RIGHT FUSELAGE HAS LAP SEAM CORROSION AND CRACK COMING OUT OF RIVET HOLE AT STA R170 LONGERON 20. INSTALLED DOUBLER PER NAC DRAWING NAC011 SCENARIO 1.

Part: SPAR — CORRODED (LT WING) · airframe 34,698 hrs

DISCREPANCY: REAR SPAR CORRODED L351 TO 399 UPPER AND LOWER CAPS AND WEB. SPLICED IN NEW SECTION OF AFT SPAR WEB FROM LT WING STA. 361 TO STA. 393 IAW O/H MANUAL 13-10 FIG. 13-4.

Part: PRESSURE SWITCH — FALSE INDICATION (ENGINE) · airframe 34,601 hrs

FUEL PRESSURE LIGHT ILLUMINATED DURING TAKEOFF ROLL. REPLACED NR 2 ENGINE FUEL PRESSURE WARNING SWITCH.

Part: CYLINDER — CRACKED (2) · airframe 34,235 hrs

DISCREPANCY: #1 engine precationary shut down for excessive vibration.CORRECTIVE ACTION: Replaced #1 engine #2 cylinder. (Cracked head).

Part: CYLINDER — CRACKED (NR 9) · airframe 34,189 hrs

NR 1 ENGINE PRECAUTIONARY SHUT DOWN FOR EXCESSIVE OIL CONSUMPTION AND NR 16 CYLINDER SHORTED SECONDARY. REPLACED NR 1 ENGINE, NR 9 CYLINDER.

Part: CYLINDER — CRACKED (NR 5) · airframe 34,172 hrs

PRECAUTIONARY SHUT DOWN ON NR 1 ENGINE DUE TO EXCESSIVE OIL CONSUMPTION. REPLACED NR 1 ENGINE NR 5 CYLINDER.

Part: DOWNLOCK SWITCH — INTERMITTENT (RT MLG) · airframe 34,099 hrs

RIGHT MAIN GEAR INDICATOR DOES NOT SHOW DOWN AND LOCKED. REPLACED RIGHT MAIN DOWN LOCK SWITCH. OP CHECKED GOOD.

Part: GLAND NUT — LOOSE (NR 15 CYLINDER) · airframe 34,065 hrs

NR 4 ENGINE PRECAUTIONARY SHUT DOWN DUE TO THE LOWER INBOARD SIDE OF THE ENGINE PRODUCING A STEADY STREAM OF BLUE SMOKE. TIGHTENED THE NR 4 ENGINE, NR 15 CYLINDER EXHAUST PUSH ROD TUBE GLAND NUT, LEAK CHECK GOOD.

Part: DOWNLOCK SWITCH — INTERMITTENT · airframe 34,053 hrs

DISCREPANCY: RIGHT MAIN GEAR SHOWED GEAR UNSAFE CONDITION (UP INDICATION PLUS RED LIGHT). RECYCLED GEAR AND THE UNSAFE CONDITION WENT AWAY.CORRECETIVE ACTION: REPLACED DOWN LOCK SWITCH, OP CHECK GOOD.

Part: GASKET — LOOSE (RELIEF VALVE) · airframe 33,983 hrs

NR 3 ENGINE SHUT DOWN ON GROUND AFTER LANDING DUE TO OIL LOSS. RESEALED AND RETORQUED OIL PRESSURE RELIEF VALVE, LEAK CHECK GOOD.

Part: CYLINDER — CRACKED (NR 4 ENGINE) · airframe 33,931 hrs

LOW BMEP "95" ON NR 4 ENGINE. REPLACED NR 1 CYLINDER ON NR 4 ENGINE.

Part: DISTRIBUTOR — DAMAGED (NR 3 ENG MAGNETO) · airframe 33,923 hrs

NR 3 ENGINE, SEVERAL OPEN PRIMARIES ON L1 CIRCUIT. REPLACED LT DISTRIBUTOR.

Part: SPARK PLUG — CRACKED (NR 13 CYLINDER) · airframe 33,867 hrs

NR 4 ENGINE, NR 2 CYLINDER SHOWS A DOUBLE SHORTED SECONDARY, ENGINE BACKFIRING WHEN LEANED. REPLACED NR 13 CYLINDER FRONT AND REAR SPARK PLUGS ONCE ENGINE ANYLIZER TIMING CORRECTED.

Part: FILLER — CHIPPED (LT WING) · airframe 33,476 hrs

LT WING L/E FILLER REPAIR CHIPPING OUT, TOP STA 240. FABRICATED AND INSTALLED SCARF PATCH PER DOUGLAS OHM FIG 13-34.

Part: STRINGER — CRACKED (RT WING) · airframe 33,476 hrs

RT LOWER WING, STRINGER 23 CRACKED AT AT STA 325, JUST FORWARD OF ACCESS PANEL (UNDER DOVETAIL). FABBED AND INSTALLED REPAIR DOUBLER PER DRAWING NAC2002-05.

Part: CYLINDER — LEAKING (NR 2 ENGINE) · airframe 33,446 hrs

FEATHERED THE NR 2 ENGINE DUE TO OIL LOSS. REPLACED AND RESEALED NR 1 EXHAUST PUSH ROD HOUSING. RESEALED AND RETORQUED NR 1 EXHAUST SIDE BAFFLE STUD. REPLACED ROCKER ARM THRUST WASHER. BORESCOPED NR 1 COMPRESSION CHAMBER OF HEAD FOR PRECAUTIONARY PURPOSES, NO DEFECTS NOTED.

Part: CYLINDER — CRACKED (NR 4 ENGINE) · airframe 33,279 hrs

NR 4 ENGINE FEATHERED AT 0507Z, (BACKFIRING AND RUNNING ROUGH). REPLACED NR 16 CYLINDER.

Part: CYLINDER — CRACKED (NR 4 ENGINE) · airframe 33,182 hrs

FEATHERED NR 4 ENGINE, BACKFIRING, WON'T TAKE A LEAN. REPLACED THE NR 18 CYLINDER.

Part: SPARK PLUG — CRACKED (NR 11 CYLINDER) · airframe 33,134 hrs

SHUTDOWN THE NR 1 ENGINE DUE TO RAPID CHT CLIMB AND DOUBLE SHORT NR 11 CYLINDER. REPLACED BOTH SPARK PLUGS.

Part: CYLINDER — CRACKED (NR 4 ENGINE) · airframe 32,887 hrs

SHUTDOWN NR 4 ENGINE AT 2345Z DUE TO BACKFIRE AND LOW BMEP. REMOVED AND REPLACED THE NR 17 CYLINDER.

Part: CYLINDER — CRACKED (NR 2 ENGINE) · airframe 32,820 hrs

NR 2 ENGINE RUNNING ROUGH, SUSPECT NR 4 CYLINDER. REMOVED AND REPLACED THE NR 4 CYLINDER ASSY.

Part: ACTUATOR — STUCK (NR 2 ENGINE) · airframe 32,785 hrs

NR 2 ENGINE PRECAUTIONARY SHUT DOWN IN CRUISE DUE TO HIGH OIL TEMP (105 DEGREES), LOW OIL PRESS (55 PSI), UNABLE TO CONTROL RPM (STUCK AT 2400), OIL COOLER CONTROL HAS NO EFFECT. REPLACED NR 2 OIL COOLER ACTUATOR, PERFORMED GROUND MAINT RUN, OIL PRESS AND OIL TEMP WITHIN LIMITS, BMEP, F/F, MAG CHECK OK. PROP OPERATION AND FEATHER CHECK NORMAL. REF NAC DC-6 MM SECT IV EC01.1 AND 2 AND PURDUE MM 11-1-6.

Part: EXHAUST VALVE — STUCK (NR 16 CYLINDER) · airframe 32,546 hrs

FEATHERED THE NR 1 ENGINE AT 0345Z DUE TO NR 16 CYLINDER LT & RT LOW COMPRESSION PATTERN. REPLACED THE NR 16 CYLINDER. (EXHAUST VALVE STUCK OPEN).

Part: SPARK PLUG — DEFECTIVE (NR 12 CYLINDER) · airframe 32,383 hrs

ON RUNUP NR 3 ENGINE RUNNING ROUGH, 12 BMEP MAG DROP, (LEFT MAG). REPLACED NR 12L SPARK PLUG AND SHORT LEAD.

Part: REGULATOR — LEAKING (NR 3 ENGINE OIL) · airframe 32,292 hrs

SHUT DOWN NR 3 ENGINE DUE TO OIL LOSS. REMOVED AND REPLACED OIL TEMP REGULATOR.

Part: CYLINDER — CRACKED (NR 3 ENGINE) · airframe 31,615 hrs

NR 3 ENGINE, PRECAUTIONARY SHUTDOWN DUE TO BACKFIRING IN CRUISE AT 2336Z. REPLACED CYLINDER ASSY.

Part: ROCKER ASSY — BROKEN (NR 1 ENGNR 10CYL)

FLT 80 - SHUT DOWN NR 1 ENGINE DUE TO CONTINUOUS BACKFIRING IN AUTO RICH AT 1827Z. MAINTENANCE REPLACED BROKEN EXHAUST VALVE ROCKER ASSY AND PUSHROD ON NR 10 CYLINDER.

Part: CYLINDER — CRACKED (NR 4 ENG NR 2)

FLT 20 - SHUT DOWN NR 4 ENGINE DUE TO LOSS OF BMEP AT 1752Z ON CLIMB-OUT AND ROUGH RUNNING ENGINE. MAINTENANCE REPLACED NR 2 CYLINDER DUE TO CRACKED HEAD.

Part: CYLINDER — CRACKED (NR 1 ENG NR 7)

FLT 80 - SHUT DOWN NR 1 ENGINE AT 2207Z DUE TO RUNNING ROUGH. REPLACED NR 4 CYLINDER DUE TO CRACKED HEAD.

Part: CYLINDER — CRACKED (NR 3 ENG NR 8)

ANC - FLT 80 - RETURNED TO ANC DUE TO NR 3 ENGINE BACKFIRED IN CRUISE. REPLACED NR 8 CYLINDER DUE TO CRACKED HEAD.