N184AM

ATA 2820

Part: VENT LINE — FAULTED · airframe 6,499 hrs · 22,305 cycles

DURING CRUSE THE CREW COULD SMELL FUEL IN THE CABIN. TOOK AIRCRAFT OUT OF SERVICE FOR SCHEDULED MX (LATE START DUE TO AIRCRAFT FLIGHTS) FOR A1042 300/12MO STARTER INSPECTION AND C 0520 100HOUR ICA INSPECTION, FOUND MULTIPLE DISCREPANCIES, UPON FURTHER DISCUSSIONS WITH THE CREW IT WAS BROUGHT TO OUR ATTENTION THAT THEY HAVE BEEN EXPERIENCING A FUEL ODOR IN THE CABIN, BEGAN TROUBLESHOOTING , REMOVED HAT RACK TO PERFORM PRESSURE TEST OF THE FUEL SYSTEM PER AMM DMC-407-A-28-00-00-00A-362A-A, AND QAN Q-2024-01 DURING THIS PROCEDURE WE REPLACED THE FUEL VENT LINES

ATA 7532

Part: SEAL — LEAKING (BLEED VALVE) · airframe 6,264 hrs · 21,604 cycles

CREW REPORTED A HAZE IN THE PASSENGER COMPARTMENT WHEN DEFROSTER SYSTEM WAS IN USE, DURING PREFLIGHT OIL WAS FOUND STREAKING OUT OF BLEED VALVE OUTLET/ EXHAUST ON TOP OF THE ENGINE COWLING.

ATA 6220

Part: ROTOR HEAD — CRACKED (MAIN ROTOR) · airframe 6,227 hrs · 21,480 cycles

CRACK FOUND ON MAIN ROTOR HUB BEARING ADAPTER ASSY ON DIAMOND BLADE. REPLACED MRH ASSY.

ATA 2140

Part: HEATER — SMOKE (CABIN) · airframe 6,193 hrs · 23,169 cycles

HEATER BLOWS SMOKE ( CORRECTIVE ACTION ) PREFORMED DETAILED INSPECTION OF HEATER BLEED AIR SYSTEM. FOUND TRACES OF OIL IN LINES. FLUSHED BLEED AIR LINES. PREFORMED OPERATION CHECK OF HEATER SYSTEM. NO DEFECTS NOTED. AIRCRAFT IS APPROVED FOR RETURN TO SERVICE.

ATA 7200

Part: SEAL RING — CRACKED (ENGINE) · airframe 5,929 hrs · 20,449 cycles

DURING FIRST GROUND RUN FOLLOWING TURBINE ASSEMBLY REPLACEMENT, OIL WAS FOUND LEAKING FROM THE GAS PRODUCER TURBINE PRESSURE OIL NOZZLE. THIS IS NOT SOMETHING WE HAD TOUCHED. UPON INSPECTION IT WAS FOUND THAT THE SEALING RING UNDER THE NOZZLE HAD BEEN CRACKED, LIKELY OVER-TIGHTENED BY STANDARD AERO. I REPLACED THE SEALING RING AND NO LEAKS WERE FOUND DURING THE SUBSEQUENT ENGINE RUN.

ATA 7300

Part: FUEL NOZZLE — UNKNOWN (AIRCRAFT ENGINE) · airframe 5,625 hrs · 19,570 cycles

FUEL NOZZLE CAUSED FADEC DEGRADE & ENGINE RESTART FAULT LIGHTS TO ILLUMINATE IN FLIGHT (CREW ALSO REPORTED AUDABLE TONE CHANGE OF THE START), CONFIRMED FAILURE WHEN INSTALLED NEW FUEL NOZZLE DESCREPANCIES CLEARED.

ATA 5200

Part: HUB — UNKNOWN (LH LITTER DOOR) · airframe 5,418 hrs · 18,878 cycles

LITTER DOOR HANDLE FELL OFF IN FLIGHT RETAINING CLIP WAS FOUND IN THE DOOR CAVITY.

ATA 2120

Part: UNKNOWN — ODOR (CABIN) · airframe 4,898 hrs · 17,250 cycles

PILOT REPORTED THAT DURING CRUISE FLIGHT, HE TURNED ON THE VENTILATION FAN IN COCKPIT AND CABIN. AFTER ACTIVATION, CREW REPORTED SMELLING OF BURNING WIRES COMING FROM THE VENTS. THE PILOT TURNED OFF CABIN VENTS AND LEFT COCKPIT VENT FANS ON, AND NO SMELL WAS COMING FROM COCKPIT VENT SYSTEM. THE CREW REPORTED THAT THE SMELL WAS STILL LINGERING BUT NOT GETTING ANY STRONGER. PILOT REPORTED NEVER SMELLING FUMES, IN THE COCKPIT. THE PILOT RETURNED TO THE BASE AND SHUT DOWN THE AIRCRAFT. BY THE TIME THE PILOT WAS ABLE TO GET TO THE CABIN TO SMELL THE FUMES, THE SMELL OF FUMES WERE NO LONGER PRESENT. MECHANIC WAS ON SITE THEY COULD FIND NO SMOKING WIRES OR BURNED SMELL IN AIRCRAFT. PERFORMED OPS CHECKS OF ALL SYSTEMS, OPS CHECKS GOOD AND NO FUMES NOTED. PERFORMED TEST FLIGHT AND OPERATED ALL SYSTEMS IN FLIGHT, AND NO FUMES NOTED. DISCREPANCY COULD NOT BE DUPLICATED.

ATA 6410

Part: BLADE — CRACKED (TAIL ROTOR) · airframe 3,339 hrs

BEFORE ENGINE START, A CRACK WAS FOUND ON ROTOR BLADE TIP CAP. MECHANIC REMOVED PAINT TO DISCOVER CRACK IN FILLER MATERIAL AND HELICOPTER GROUNDED.