N331MX

Part: CONTROL CABLE — OBSTRUCTED (POWER LEVER) · airframe 14,662 hrs · 17,030 cycles

R/S POWER LEVER WOULD NOT GO INTO GROUND IDLE AFTER LANDING. FOUND HINGE FROM COCKPIT DOOR INTERFERING WITH CABLES/ PULLEYS TRAVEL AT RT AVIONICS AFT SIDE. REMOVED FOD AS REQUIRED. CABLES/ PULLEYS GROUND RUN SATISFACTORY. A/C APPROVED FOR RTS. (K)

Part: CONNECTOR — INTERMITTENT (GROUND MATRIX)

PROXY SYSTEM FAIL MESSAGE IN FLT. FOUND INTERMITTENT CONNECTION AT GROUND MATRIX 80VPNV. CLEANED AND RERACKED GROUND MATRIX. OPS CHECK GOOD AT THIS TIME. (IPC REF: 24-50-01-1-370)

Part: PSEU — FAILED (E/E BAY)

PSEU SYSTEM FAILURE IN FLIGHT. MULTIPLE INDICATIONS FAIL HYDRAULIC, GEAR, GROUND SPOILER PROXIMITY WOW AND AOA. INSTALLED PSEU. (M)

Part: EJECTOR VALVE — FAILED (RT/LT)

AIRFOIL DE-ICE FAILED IN FLIGHT IN ALL MODES. REMOVED AND REPLACED LEFT AND RIGHT EJECTOR FLOW CONTROL VALVES AND PATCHED SEVERAL HOLES IN LT WING OUTBOARD BOOT AND RIGHT INBOARD BOOT. P/N''S REMOVED 3D3556-01 S/N''S LT 0922 TSN 3507:22 CSN 4332, RIGHT S/N 0982 TSN 3507:22 CSN 4332. (M)

Part: FLAP CONTROL — MALFUNCTIONED (E/E COMPT)

SHORTLY AFTER TAKE-OFF, THE FLIGHT CREW REPORTED A FLAP CONTROL FAULT AND ASYMMETRY WARNING MESSAGE. AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT FURTHER INCIDENT. ON-CALL MAINTENANCE CONTRACTOR RESET THE FLAP CONTROL UNIT IAW AMM JIC 27-50-00-810-001-AAO, CONDUCTED AN OPERATIONAL CHECK IAW AMM 27-50-00 WITH SATISACTORY RESULTS.

Part: CONTROLLER — DEFECTIVE (COCKPIT)

SHORTLY AFTER T/O, THE FLIGHT CREW REPORTED A PROBLEM WITH THE AIRCRAFT PRESSURIZATION SYSTEM. AIRCRAFT WOULD NOT PRESSURIZE IN AUTO OR MANUAL MODE. AIRCRAFT RETURNED TO THE FIELD LANDED WITHOUT FURTHER INCIDENT. DENVER MX PERSONNEL REPLACED THE CABIN PRESSURIZATION CONTROL UNIT IAW AMM 21-31-00 OPERATIONAL CHECK WAS CONDUCTED WITH SATISFACTORY RESULTS. AIRCRAFT WAS THEN RETURNED TO SERVICE.

Part: PITOT HEAT — FAILED (FWD FUSELAGE)

EN ROUTE FROM DEN TO CYS, AIRCRAFT ENCOUNTERED ICING CONDITIONS. SINCE THE PITOT HEAT SYSTEM WAS MEL'D, AIRCRAFT WAS FORCED TO RETURN TO DEN. AIRCRAFT LANDED IN DEN WITHOUT FURTHER INCIDENT. DEN MAINTENANCE PERSONNEL REPLACED THE NR 2 PITOT TUBE IAW AMM 34-11-04. CONDUCTED A STATIC LEAK CHECK IAW AMM 34-11-00. NO DEFECTS NOTED. AIRCRAFT WAS THEN RETURNED TO SERVICE.

Part: WINDSHIELD — CRACKED (LT COCKPIT)

DEN - FLT 7405 - EN ROUTE FROM DEN TO RAP, CREW REPORTED THE CAPTAIN'S WINDSCREEN HAD CRACKED AND THE AIRCRAFT WAS RETURNING TO DEN. AIRCRAFT LANDED IN DENVER WITH NO FURTHER INCIDENTS. AIRCRAFT LATER MOVED FROM DEN TO COS WHERE MAINTENANCE REPLACED THE DAMAGED WINDSCREEN. AIRCRAFT WAS THEN RETURNED TO SERVICE. PART TOTAL CYCLES: 3,853. X)

Part: BEARING — DEFECTIVE (PROP HUB)

PROPELLER SERIAL NUMBER HL-146, WAS REMOVED FROM AIRCRAFT N331MX (S/N 3067) FOR SCHEDULED MAINTENANCE. WHEN THE PROPELLER WAS BEING DISASSEMBLED IN PREPARATION FOR SHIPMENT TO THE OEM FOR INSPECTION, MAINTENANCE PERSONNEL NOTICED THE THRUST BEARING AT THE NR 3 BLADE POSITION WAS SPLIT INTO ALONG THE ENTIRE LENGTH OF THE CIRCUMFERENCE OF THE BEARING. THE OEM WAS NOTIFIED OF OUR FINDINGS. THE OEM HAS A PROGRAM IN PLACE TO REPLACE THESE BEARINGS WHEN THE PROPELLER UNDERGOES THE FIRST INSPECTION AT 2100 FLIGHT CYCLES.

Part: CAS WARNING — ACTIVATED (COCKPIT)

DURING THE TAKEOFF ROLL PRIOR TO REACHING V1, THE CREW WAS ALERTED BY THE CAS SYSTEM THAT THEY HAD ENCOUNTERED AN INVERTER BUS FAIL. THIS WAS ACCOMPANIED BY AN AMBER MESSAGE ON THE EICAS SCREEN. THE FLIGHT CREW ABORTED THE TAKEOFF AND RETURNED TO GATE. MTN AIR EXPRESS MX PERSONNEL INSPECTED THE AIRCRAFT IN ADDITION TO CONDUCTING A SYSTEM FUNCTIONAL CHECK IAW AMM 24-22-00, UNABLE TO DUPLICATE THE PROBLEM.

Part: CONTROL CABLE — LACK OF LUBE (LT ENGINE)

CREW REPORTED, A BINDING CONDITION WITH THE LEFT ENGINE POWER LEVER CREW ELECTED TO RETURN TO COS. AIRCRAFT LANDED COS WITH NO FURTHER INCIDENT. MAX MX INSPECTED LEFT ENGINE POWER LEVER CABLES, NO DISCREPANCIES NOTED. MAX MX TOOK THE PRECAUTION OF LUBRICATING THE TELEX CABLE ON THE LEFT ENGINE POWER LEVER CABLE. ENGINE GROUND RUNS WERE SATISFACTORY.

Part: HALL EFFECT SENS — DEFECTIVE (RT ENGINE)

FLT 3535 - AIRCRAFT RETURNED FROM FLIGHT. CREW WAS ALERTED BY A RT GENERATOR FAILURE INDICATION. AIRCRAFT LANDED COS WITHOUT FURTHER INCIDENT. COS - MX REPLACED HALL EFFECT SENSOR IAW AMM 24-30-00. GROUND CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (X)