N454JH

Part: ENGINE — MAKING METAL (ZONE 100) · airframe 22,049 hrs · 73,276 cycles

PILOT EXPERIENCED AN ENGINE CHIP LIGHT DURING LANDING. ENGINE REMOVED FROM AIRCRAFT FOR FURTHER INVESTIGATION.

Part: ENGINE — MAKING METAL (ZONE 100) · airframe 22,045 hrs · 73,264 cycles

PILOT EXPERIENCED AN ENGINE CHIP INDICATION DURING APPROACH. MAINTENANCE PERFORMED CLEANING AND GROUND RUNS AND RETURNED TO SERVICE.

Part: ENGINE — MAKING METAL · airframe 19,790 hrs · 63,496 cycles

ENGINE GEARBOX CHIP LIGHT ILLUMINATED DURING APPROACH FOR LANDING. UPON INSPECTION IT WAS DETERMINED THAT THE UPPER GEARBOX MAGNETIC CHIP DETECTOR HAD ILLUMINATED THE WARNING LIGHT WITH METAL ABOVE THE MAXIMUM ALLOWED. A SMALLER AMOUNT OF METAL WAS FOUND ON THE LOWER PLUG AS WELL. THE ENGINE WAS REMOVED FROM THE AIRCRAFT FOR FURTHER INVESTIGATION AS TO THE CAUSE.

Part: ENGINE — MAKING METAL (ZONE 200) · airframe 19,704 hrs · 63,126 cycles

PILOT GOT AN ENGINE CHIP LIGHT DURING FLIGHT AND PERFORMED A PRECAUTIONARY LANDING. MAINTENANCE FOUND EVIDENCE OF CHIPS ON THE LOWER AND UPPER ENGINE GEARBOX CHIP DETECTORS. ENGINE REMOVED FROM AIRCRAFT FOR INSPECTION.

Part: TURBINE WHEEL — BINDING (ENGINE) · airframe 17,921 hrs · 22,030 cycles

DURING MAINTENANCE THE MECHANICS DETERMINED THE FIRST STAGE TURBINE BLADES WERE RUBBING ON THE NOZZLE.ASSEMBLY REMOVED FROM ENGINE

Part: ENGINE — MAKING METAL · airframe 16,418 hrs · 47,865 cycles

ENGINE CHIP LIGHT DURING FLIGHT. MAINTENANCE FOUND 4 FLAKES ON UPPER AND LOWER PLUGS WITHIN PARAMETERS. PERFORMED AN OIL SYSTEM DRAIN, FLUSH AND FILTER CLEAN AND CHANGE AND GROUND RUN. CHIP PLUGS WERE CLEAN UPON REINSPECTION. AIRCRAFT WAS RETURNED TO SERVICE.

Part: CHIP DETECTOR — CONTAMINATED (ENGINE) · airframe 16,043 hrs · 46,389 cycles

PILOT REPORTED AN ENGINE CHIP LIGHT DURING APPROACH TO LANDING. MAINTENANCE FOUND ACCEPTABLE CHIPS ON UPPER AND LOWER PLUGS. THE PLUGS WERE CLEANED AND REINSTALLED AND A PENALTY RUN WAS PERFORMED. THE PLUGS WERE RECHECKED AND FOUND CLEAN. AIRCRAFT WAS RETURNED TO SERVICE.

Part: CHIP DETECTOR — SHORTED (MAIN GEARBOX) · airframe 15,774 hrs · 45,248 cycles

DURING A PREFLIGHT INSPECTION THE PILOT NOTICE A MAIN ROTOR GEARBOX DIMMLY ILLUMINATED CHIP LIGHT. MAINTENANNCE DISCOVERED AND INTERNAL SHORT IN THE CHIP DETECTOR AND REPLACED WITH SERVICABLE.

Part: BLADDER — LEAKING (FUEL CELL) · airframe 14,930 hrs · 42,114 cycles

DURING 100 HOUR MAINTENANCE INSPECTION, A SMALL FUEL LEAK WAS DISCOVERED ON THE BOTTOM OF THE RIGHT FUEL BLADDER. BLADDER WAS REMOVED AND REPLACED

Part: GEARBOX — EXCESS PLAY (MAIN ROTOR) · airframe 12,693 hrs · 35,040 cycles

DURING MAINTENANCE A MECHANIC DISCOVERED EXCESSIVE GEARPLAY IN THE MAIN ROTOR TRANSMISSION. THE UNIT WAS REMOVED FOR REPAIR

Part: COMPRESSOR — DAMAGED · airframe 12,693 hrs · 35,040 cycles

PILOT REPORTED TURBINE OUTLET TEMPERATURE INCREASE AT END OF FLIGHT. MAINTENANCE DISCOVERED COMPRESSOR BLADES DAMAGED BY UNKNOWN FOD.

Part: FUEL CONTROL — LEAKING (ENGINE) · airframe 12,390 hrs · 34,021 cycles

DURING A POST FLIGHT INSPECTION MAINTENANCE FOUND A SMALL FUEL LEAK AT THE OUT FITTING LOCATION ON THE ENGINE FUEL CONTROL UNIT. THE UNIT WAS REPLACED WITH A SERVICEABLE UNIT.

Part: BLADE — DENTED (MAIN ROTOR) · airframe 11,625 hrs · 3,385 cycles

DAMAGE WAS FOUND IN AREAS A AND H ON 4 OF THE 5 MAIN ROTOR BLADE BOTTOM SKINS APPROXIMATELY 6" FROM THE BLADE TIPS. MAINTENANCE DETERMINED IAW CSP HMI-2 MM THAT IT WAS REPAIRABLE DAMAGE AND NO SUDDEN STOPPAGE INSPECTION WAS REQUIRED. AFFECTED BLADES WERE REMOVED FOR REPAIR AND SERVICEABLE MAIN ROTOR BLADES INSTALLED.

Part: ENGINE — MAKING METAL · airframe 10,564 hrs · 27,948 cycles

DURING GROUND RUN AFTER THE FIRST START OF THE DAY THE ENGINE CHIP LIGHT ILLUMINATED. MAINTENANCE INSPECTED THE UPPER AND LOWER ENGINE PLUGS AND FOUND 1 SLIVER ON THE UPPER PLUG. A 30 MINUTE GOUND RUN WAS PERFORMED AND THE PLUGS WERE RECHECKED AND FOUND CLEAN. THE ACFT WAS RELEASED TO SERVICE.

Part: BLADDER — LEAKING (RT FUEL CELL) · airframe 9,153 hrs · 4,386 cycles

SMALL PUDDLE OF FUEL FOUND ON THE GROUND UNDER THE BELLY OF THE ACFT AT PREFLIGHT. MAINTENANCE FOUND A SMALL PUNCTURE IN THE RT FUEL BLADDER OF AN UNCONFIRMED ORIGIN.

Part: LINE — CHAFED (INSTRUMENT PANEL) · airframe 6,914 hrs

WET LINE FROM ENGINE TORQUE FITTING TO GAUGE, CHAFED WHERE IT ENTERS THE INSTRUMENT PANEL AND HAD A SMALL LEAK. PILOT MADE AN UNSCHEDULED LANDING. MX REPAIRED THE LINE.

Part: WARNING LIGHT — FALSE ACTIVATION (CHIP DETECTOR) · airframe 2,785 hrs · 215 cycles

ON APPROACH TO LANDING THE PILOT HAD AN ENGINE CHIP LIGHT EVENT. THE LIGHT REMAINED ON DURING SHUTDOWN BUT WHEN MX ARRIVED THE LIGHT WAS OUT. BOTH ENGINE CHIP PLUGS WERE PULLED AND WERE FOUND TO BE CLEAN OF DEBRIS. THE LIGHT EVENT COULD NOT BE DUPLICATED.

Part: CONNECTOR — DIRTY (ENGINE OIL SYS) · airframe 2,789 hrs

ON APPROACH TO LANDING THE PILOT HAD A CHIP LIGHT EVENT. MX REMOVED BOTH ENGINE CHIP PLUGS AND FOUND NO DEBRIS. IT WAS DETERMINED THAT THE LOWER CHIP PLUG CONNECTOR PLUG WAS SHORTED INTERNALLY AND CAUSING THE LIGHT. THE CONNECTOR WAS REPLACED.

Part: ENGINE — MAKING METAL · airframe 2,420 hrs · 114 cycles

PILOT DEPARTED THE AIRPORT FOR A TOUR FLIGHT AND AN ENGINE CHIP WARNING LIGHT CAME ON. THE PILOT RETURNED TO THE AIRPORT. MX PULLED THE UPPER AND LOWER CHIP PLUGS AND FOUND A SMALL AMOUNT OF MATERIAL ON THE UPPER PLUG .79MM OR LESS IN SIZE. AFTER A 30 MINUTE PENALTY RUN THE SAME AMOUNT OF MATERIAL WAS FOUND ON THE UPPER PLUG. THE ENGINE OILS WERE DRAINED, FLUSHED, SEVICED AND THE FILTERS WERE CLEANED. A SECOND 30 MINUTE RUN WAS PERFORMED. MATERIAL WAS AGAIN FOUND ON THE UPPER PLUG. THE ENGINE WAS REMOVED FROM THE ACFT FOR INSP.