N660CA

Part: BEARING — FRAGMENTED (ADAPTER SHAFT) · airframe 37,286 hrs

PILOT REPORTED THE LEFT ENGINE HAD LOW OIL PRESSURE, BELOW GREEN ARC AT 1700 RPM. DEBRIS WAS FOUND IN THE OIL FILTER, FURTHER INSPECTION DISCOVERED THE STARTER ADAPTER SHAFT NEEDLE BEARING TO BE SEVERELY DAMAGED. THE ENGINE WAS REPLACED.

Part: EXHAUST VALVE — DAMAGED (NR 1 CYLINDER) · airframe 35,962 hrs

CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION; EXHAUST VALVE DISPLAYS EVIDENCE OF HEAT DAMAGE.

Part: SELECTOR VALVE — MALFUNCTIONED (FUEL SYS) · airframe 35,618 hrs · 32,098 cycles

PILOT REPORTED ENGINE FAILURE WHEN LEANING MIXTURE. RESTARTED WITH RIGHT FUEL PUMP ON. MAINTENANCE TROUBLESHOT THE RIGHT FUEL SELECTOR VALVE. REPLACED FUEL SELECTOR VALVE.

Part: LIFTER — COLLAPSED (NR 6 CYLINDER) · airframe 35,558 hrs · 31,988 cycles

PILOT REPORTED THE RIGHT ENGINE WAS VIBRATING AND SURGING ABOVE 30 INCHES OF MANIFOLD PRESSURE. MAINTENANCE INVESTIGATED, CLEANED THE RIGHT ENGINE FUEL NOZZLES, AND REPLACED THE RIGHT ENGINE NR 6 CYLINDER EXHAUST LIFTER DUE TO IMMOBILITY.

Part: EXHAUST VALVE — DAMAGED (NR 2 CYLINDER) · airframe 35,558 hrs

CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION. EXHAUST VALVE DISPLAYS EVIDENCE OF HEAT DAMAGE.

Part: EXHAUST VALVE — DAMAGED (NR 2 CYLINDER) · airframe 35,558 hrs

CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION. EXHAUST VALVE DISPLAYS EVIDENCE OF HEAT DAMAGE.

Part: EXHAUST VALVE — DAMAGED (NR 3 CYLINDER) · airframe 35,558 hrs

CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION. EXHAUST VALVE CRACKED AND DISPLAYS EVIDENCE OF HEAT DAMAGE.

Part: EXHAUST VALVE — DAMAGED (NR 2 CYLINDER) · airframe 35,558 hrs

CYLINDER REMOVED DUE TO LOW COMPRESSION AT INSPECTION. EXHAUST VALVE DISPLAYS EVIDENCE OF HEAT DAMAGE.

Part: FUEL LINE — DEFECTIVE (HEATER) · airframe 34,986 hrs · 31,249 cycles

PILOT REPORTED STRONG SMELL OF GAS WHEN HEATER IS OPERATING. R & R HEATER FUEL LINE FROM HEATER FUEL PUMP TO HEATER. LEAK CHECKED GOOD.

Part: PUMP — MALFUNCTIONED (FUEL SYSTEM) · airframe 31,201 hrs

FLIGHT CREW REPORTED THAT PRIOR TO TAKEOFF ALL INDICATIONS WERE NORMAL. SHORTLY AFTER TAKEOFF WHILE CLIMBING, THE CREW REPORTED THAT THE RT ENGINE SURGED AND THEN BEGAN TO LOSE POWER, AT WHICH POINT THE CREW NOTICED A SPIKE IN FUEL FLOW (295 PPH). CREW SHUTOFF RT ENGINE AUX FUEL PUMP AND THE ENGINE REGAINED POWER. ELECTED TO RETURN TO THE DEPARTURE AIRPORT. ON MX INSPECTION, RT AUXILIARY FUEL PUMP, LT AND RT FUEL TANK CAPS, AND RT VAPC WERE ALL REPLACED. POST MX FUNCTIONAL CHECK FLIGHT WAS SATISFACTORY.

Part: SPAR — CRACKED (ZONE 100) · airframe 31,042 hrs

DURING A SCHEDULED MX EVENT, CRACKS WERE DISCOVERED ON THE REAR SPAR WEBS FORWARD AND AFT AT FLOOR ATTACH POINTS. DAMAGE WAS MAPPED AND SENT. REPAIRS WERE CARRIED OUT IAW REPAIR PLANS SUPPLIED AND SUBSTANTIATED.

Part: DRAG BRACE — CRACKED (NLG) · airframe 30,528 hrs

AT SCHEDULED INSPECTION, NLG DRAG BRACE, PN 5142002-5, WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE BEYOND LIMIT ALLOWABLE OF MEB91-11R1. THIS UNIT HAS BEEN SCRAPPED & A REPLACEMENT DRAG BRACE HAS BEEN INSTALLED IN ACFT.

Part: DRAG BRACE — CRACKED (NLG) · airframe 28,101 hrs

AT SCHEDULED INSPECTION, NLG DRAG BRACE OEM PN 5142002-5 WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE WITHIN ALLOWABLE LIMIT. THIS UNIT HAS BEEN REPAIRED IAW PROCEDURE OUTLINED IN MEB941-11R1 & RETURNED TO SERVICE.

Part: DRAG BRACE — CRACKED (NLG) · airframe 27,946 hrs

AT SCHEDULED INSPECTION, NLG DRAG BRACE OEM PN 5142002-5 WAS FOUND TO BE CRACKED IN THE AREA OF NLG ACTUATOR ATTACH POINT. METHOD OF INSPECTION WAS DYE PENETRANT. THIS CRACK WAS FOUND TO BE WITHIN ALLOWABLE LIMIT. THIS UNIT HAS BEEN REPAIRED IAW PROCEDURE OUTLINED IN MEB941-11R1 & RETURNED TO SERVICE.

Part: DRAG BRACE — BROKEN (NLG) · airframe 27,108 hrs

DURING LANDING ROLLOUT, NOSE GEAR COLLAPSED. ALL INDICATIONS WERE NORMAL. MX FOUND NOSE GEAR DRAG BRACE BROKEN AT ACTUATOR ATTACH POINT. MX PERFORMED TEMPORARY REPAIRS, REPLACED PROPELLERS, FERRIED ACFT BOS FOR PERMENANT REPAIRS.

Part: DRAG BRACE — BROKEN (NLG) · airframe 27,108 hrs

DURING LANDING ROLLOUT, NOSE GEAR COLLAPSED. ALL INDICATIONS WERE NORMAL. MX FOUND NOSE GEAR DRAG BRACE BROKEN AT ACTUATOR ATTACH POINT. MX PERFORMED TEMPORARY REPAIRS, REPLACED PROPELLERS, FERRIED ACFT BOS FOR PERMENANT REPAIRS.

Part: BEAM — CRACKED (ZONE 400) · airframe 25,101 hrs · 16,985 cycles

RIGHT ENGINE'S INBOARD ENGINE BEAM CRACKED AT AFT UPPER WEB . REMOVAL AND REPLACEMENT OF ENGINE BEAM.

Part: CIRCUIT BREAKER — DEFECTIVE (COCKPIT)

CREW REPORTED AVIONICS MASTER SWITCH INOP. MX CHANGED CIRCUIT BREAKER SWITCH.

Part: MASTER SWITCH — FAILED (AVIONICS)

WHILE AIRCRAFT WAS TAXING, AVIONICS SYSTEM FAILED. CREW ENGAGED EMERGENCY AVIONICS BY PASS SWITCH, AND RETURNED TO THE GATE. MECHANICS REMOVED AND REPLACED AVIONICS MASTER SWITCH AND RELEASE AIRCRAFT BACK TO SERVICE.

Part: PUMP — DEFECTIVE (AUXILIARY FUEL)

DURING CRUISE FLIGHT, PLACED RIGHT FUEL SELECTOR TO LEFT MAIN FUEL TANK, BOTH RIGHT AND LEFT ENGINES SHOWED SIGNS OF FUEL STARVATION (ENGINES SURGING). PUT LEFT FUEL BOOST PUMP ON LOW AND WAS OK. FOUND LEFT AUXILIARY BOOST PUMP INLET CHECK BALL STUCK ON SEAT RESTRICING FUEL FLOW WHEN BOTH ENGINES RUNNING OFF LEFT TANK AT HIGH POWER SETTINGS.