N940JM

ATA 3510

Part: LINE — CHAFED (OXYGEN SYSTEM) · airframe 4,282 hrs · 3,896 cycles

DURING THE POST FLIGHT CHECKS, THE FLIGHT CREW REPORTED A HISSING NOISE COMING FROM UNDER THE INSTRUMENT PANEL, CORRESPONDING TO THE OXYGEN GAUGE GOING DOWN. DISCOVERED THAT THE OXYGEN CAPILLARY LINE HAD BEEN CHAFED BY A REMOVABLE INSPECTION PANEL. A NEW LINE WAS INSTALLED AND POSITIONED TO CLEAR PANEL.

ATA 7430

Part: SWITCH — DEFECTIVE (START) · airframe 3,831 hrs · 3,514 cycles

THE FLIGHT CREW REPORTED THAT THE NR 2 ENGINE STARTED NORMALLY, THEY THEN MOVED THE START SELECT SWITCH INTO THE NR 1 POSITION, THE NR 1 STARTER AUTOMATICALLY ENGAGED WITHOUT ENGAGING THE START SWITCH. TROUBLESHOOTING IDENTIFIED START SWITCH TO BE DEFECTIVE. THE SWITCH WAS REMOVED AND REPLACED WITH A NEW UNIT. FUNCTIONAL CHECKS SATISFACTORY.

ATA 3260

Part: UPLOCK SWITCH — INTERMITTENT (NLG) · airframe 3,094 hrs · 2,801 cycles

ON SEVERAL OCCASIONS THE CREW HAD REPORTED AN INTERMITTENT , LG UNLOCK ANNUNCIATOR, ILLUMINATING IN FLIGHT. TROUBLESHOOTING DETERMINED THAT THE NLG UPLOCK & DOWNLOCK WERE DEFECTIVE. THE SWITCHES WERE REPLACED WITH NEW PN MS24331-1 & RIGGED IAW THE AMM 32-20-00 & 32-30-00. OPERATIONS CHECKED OK.

ATA 2750

Part: SWITCH — FAILED (TE FLAP) · airframe 2,752 hrs · 2,503 cycles

ON APPROACH THE FLAPS FAILED TO EXTEND PAST 12 DEGREES. THE CREW ABORTED THE LANDING & DIVERTED TO AN AIRPORT WITH A LONGER RUNWAY. TROUBLESHOOTING FOUND THE RT FLAP FOLLOW UP SWITCH PN 45AS61015-23 DEFECTIVE. THE SWITCH WAS REPLACED WITH AN OVERHAULED UNIT & RIGGED IAW AMM. OPERATIONS CHECKED OK.

ATA 2750

Part: FLAP — MALFUNCTIONED (WING) · airframe 2,746 hrs · 2,497 cycles

THE TE FLAPS FAILED TO EXTEND PAST 10 DEGREES ON APPROACH. ONCE ON THE GND THE FLAPS OPERATED CORRECTLY. THEN FLAP SYS WAS INSPECTED FOR DAMAGE & CLEARANCES AT THE UP POSITION, PERFORMED FUNCTIONAL TEST & OPERATIONAL TESTS, FLAP ASYMMETRY TESTS & LT & RT DEFECTION CHECKS. NO DEFECTS NOTED AT THIS TIME. ACFT RETURNED TO SERVICE. SUSPECT A FLAP ASYMMETRY DETECTOR.

ATA 2150

Part: MOTOR — DEFECTIVE (APU BAY) · airframe 2,718 hrs · 2,477 cycles

CREW REPORTED THAT DURING THE OPERATION OF THE VAPOR CYCLE AIR CONDITIONING SYS IT WAS NOTED THAT THE COMPRESSOR MOTOR WAS EXCESSIVE NOISE. DURING MX TROUBLESHOOTING IT WAS NOTED THAT THE ELEC DRIVE MOTOR WAS EMITTING VISIBLE SPARKS. THE DEFECTIVE MOTOR WAS REMOVED FROM SERVICE PN 1134104-1, SN 3026 MOTOR 1258HRS TT, BRUSHES 274.6HRS TT. OVERHAULED MOTOR INSTALLED IAW AMM, FT OK. NOTE MOTOR FAILED 1742HRS SHORT OF THE TBO.

ATA 2211

Part: COMPUTER — DEFECTIVE (AUTOPILOT SYS) · airframe 2,627 hrs · 2,381 cycles

THE CREW REPORTED THAT THE AUTO PILOT PITCH TRIM HAD FAILED DURING FLIGHT DURING A TRIP TO HOME BASE. TROUBLESHOOTING IDENTIFIED THAT THE NR 1 FCC WAS DEFECTIVE & REQUIRED REPLACEMENT. THE DEFECTIVE COMPUTER WAS R & R BY A NO FAULT FOUND OVERHAULED UNIT SN 2071. THE NEXT FLIGHT THE CREW REPORTED THAT THE AUTO PILOT PITCH TRIM FAILED IN FLIGHT. THE MAINTENANCE VENDOR EVALUATED THE FAULT & FOUND THAT THE NR 1 FCC SN 2071 WAS DEFECTIVE. THE FCC SN 2071 WAS R & R WITH A TESTED UNIT. TO DATE, NO FAULTS HAVE BEEN REPORTED FOR THE AP SYS.

ATA 2820

Part: CONTROL VALVE — FAILED (FUEL SYSTEM) · airframe 2,617 hrs · 2,369 cycles

FLIGHT CREW REPORTED THAT THE LT JET PUMP FAILED IN THE CLOSED POSITION PREVENTING MOTIVE FUEL FLOW. IT WAS FOUND THAT THE LT VLV WAS DEFECTIVE & WAS REPLACED WITH A NEW VLV. LEAK & FUNCTIONAL CHECKS OK.

ATA 3244

Part: TIRE — DEFECTIVE (NLG) · airframe 2,467 hrs · 2,258 cycles

THE FLIGHT CREW REPORTED THAT THE NOSE WHEEL VIBRATED BADLY DURING THE TAKEOFF ROLL. TROUBLESHOOTING IDENTIFIED THE NLG TIRE AS DEFECTIVE. THE DEFECTIVE NOSE TIRE WAS A LITTLE OVER A MONTH OLD & HAD 121.1 HRS & 95 CYCLES OF USE. PREVIOUS TO THIS EVENT THE NOSE WHEEL SHIMMY DAMPENER WAS CHECKED FOR SERVICE & FOUND TO BE SATISFACTORY.

ATA 3130

Part: CVR — DEFECTIVE (COCKPIT) · airframe 2,451 hrs · 2,248 cycles

FLIGHT CREW REPORTED THAT THE CVR WOULD NOT TEST. TROUBLESHOOTING FOUND THAT THE CVR WAS DEFECTIVE & REMOVED FOR REPAIRS.

ATA 3425

Part: HSI — DEFECTIVE (COCKPIT) · airframe 2,467 hrs · 2,258 cycles

THE FLIGHT CREW REPORTED THAT THE STAND BY HORIZON DRIFTS IN FLIGHT. THE STAND BY HORIZON INDICATOR WAS FOUND TO BE DEFECTIVE & WAS REPLACED WITH AN OVERHAULED UNIT. THE ACFT WAS RETURNED TO SERVICE.

ATA 8010

Part: SWITCH — DEFECTIVE (COCKPIT) · airframe 2,317 hrs · 2,137 cycles

THE CREW REPORTED THAT WHEN THE STARTER SELECT SWITCH WAS SELECTED TO THE LT ENG, THE ENG BEGAN TO START WITHOUT PUSHING THE START BUTTON. TROUBLESHOOTING IDENTIFIED THE LT ENG START PUSH BUTTON SWITCH AS DEFECTIVE & A NEW SWITCH WAS INSTALLED. FUNCTIONAL CHECKS WERE SATISFACTORY.