N705AL

Part: AMPLIFIER — INOPERATIVE (DROOP COMP)

IN CRUISE FLIGHT, BOTH ENGINES STARTED SURGING, EMERGENCY CHECK LIST COMPLIED WITH AND RUN ON LANDING. MAINTENANCE COMPLIED WITH VISUAL INSP OF BOTH ENGINES AND N1 AND N2 CONTROL SYSTEMS, COMPLIED WITH GROUND RUN CHECK AND AFTER ABOUT FIVE MINUTES EXPERIENCED ENGINE SURGE. TROUBLESHOOTING REVEALED THE FORWARD MOUNTED DROOP AMPLIFIER TO BE AT FAULT, REPLACED AMPLIFIER AND DID A 20 MINUTE GROUND RUN AND GROUND CHECK OF BOTH AMPLIFIERS ALL SYSTEMS NORMAL.

Part: FITTING — BROKEN (NLG)

ON DEPARTURE HEARD LOUD BANG AS LANDING GEAR WAS RETRACTED. THE NOSE GEAR WOULD NOT LOCK IN THE UP POSITION, RETURNED TO HMA AND MAINTENANCE FOUND THE DOOR STRUT FITTING BROKEN. MAINTENANCE CONFIRMED THAT LANDING GEAR WAS DOWNED AND LOCKED AND FOUND FITTING P/N 76209-02018-043 WAS BROKEN ON THE NOSE GEAR. REPLACED FITTING AND NOSE GEAR STRUT. (M)

Part: GEAR — INOPERATIVE (GEARBOX) · airframe 17,351 hrs

T/M GEAR REMOVED FOR INSPECTION IAW SBT-076 REMOVED AND REPLACED T/M GEAR.

Part: GEAR — DEFECTIVE (GEARBOX) · airframe 17,132 hrs

TO COMPLIED WITH MANDATORY SERVICE BULLETIN T-075. PARTS WITH EFFECTIVE S/N'S MAY EXPERIENCE A PROBLEM THAT COULD RESULT IN A N2 DECOUPLE EVENT. REMOVED AND REPLACED. SENT PART TO MFG.

Part: PINION GEAR — SPALLED (GEARBOX) · airframe 17,132 hrs

ON INSPECTION FOUND SPALLING ON GEAR TEETH. REMOVED AND REPLACED.

Part: BULB — FAILED (SMOKE DETECTOR)

DURING PREFLIGHT CHECK, BAGGAGE COMPARTMENT SMOKE DETECTOR WOULD NOT TEST, THE MECHANIC REPLACED THE BULB AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: CHIP DETECTOR — DIRTY (NR 1 ENGINE)

DURING FLIGHT, NR 1 ENGINE CHIP DETECTOR LIGHT ILLUMINATED, THE PILOT FOLLOWED CORRECTIVE ACTION IAW EMERGENCY CHECKLIST, UPON LANDING THE MECHANIC REMOVED AND CLEANED THE NR 1 ENGINE CHIP DETECTORS AND ALSO REPLACED THE NR 1 ENGINE OIL FILTER AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: FUEL CONTROL — INOPERATIVE (NR 1 ENGINE)

DURING RUN-UP, AFTER DROOP COMPENSATOR CHECK, THE PILOT SET THE NR 2 ENGINE TO 100 PERCENT AND ADJUSTED THE NR 1 ENGINE TO 100 PERCENT. THEN THE NR 1 ENGINE FAILED (FLAMED OUT). THE MECHANIC REMOVED AND REPLACED THE GOVERNOR, FUEL CONTROL AND FUEL NOZZLE ON THE NR 1 ENGINE. THE FUEL FILTER WAS CHECKED, AIRCRAFT FUEL SAMPLE WAS CHECKED AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: GOVERNOR — INOPERATIVE (NR 1 ENGINE)

DURING RUN-UP, AFTER DROOP COMPENSATOR CHECK, THE PILOT SET THE NR 2 ENGINE TO 100 PERCENT AND ADJUSTED THE NR 1 ENGINE TO 100 PERCENT. THEN THE NR 1 ENGINE FAILED (FLAMED OUT). THE MECHANIC REMOVED AND REPLACED THE GOVERNOR, FUEL CONTROL AND FUEL NOZZLE ON THE NR 1 ENGINE. THE FUEL FILTER WAS CHECKED AIRCRAFT FUEL SAMPLE WAS CHECKED AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: FUEL NOZZLE — INOPERATIVE (NR 1 ENGINE)

AFTER DROOP COMPENSATOR CHECK, THE PILOT SET THE NR 2 ENGINE TO 100 PERCENT AND ADJUSTED THE NR 1 ENGINE TO 100 PERCENT. THEN THE NR 1 ENGINE FAILED (FLAMED OUT). THE MECHANIC REMOVED AND REPLACED THE GOVERNOR, FUEL CONTROL AND FUEL NOZZLE ON THE NR 1 ENGINE. THE FUEL FILTER WAS CHECKED, AIRCRAFT FUEL SAMPLE WAS CHECKED AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: ROD END — CRACKED (M/R DAMPER)

DURING FIELD INSPECTION, FOUND ROD END CRACKED AT BARREL NUT SEAT.

Part: ENGINE — POWER LOSS (NR 1) · airframe 15,560 hrs

ENROUTE, (55 MILES OUTBOUND) NR 1 ENGINE DROPPED OFFLINE, N1 DROPPED TO 36.8 PERCENT, T 5 DROPPED TO 580 DEGREES C AND TORQUE TO 30 PERCENT, PC TUBE FOUND BROKEN AT THE PC FILTER END TUBE.

Part: FIRE DETECTOR — WILL NOT TEST (NR 1 ENGINE) · airframe 15,449 hrs

FOUND DURING PRE-START CHECK, FLAME DETECTOR WOULD NOT TEST.

Part: FIRE DETECTOR — INOPERATIVE (NR 1 ENGINE)

DURING PRESTART CHECK, FLAME DETECTOR WOULD NOT TEST.

Part: TRANSPONDER — MELTED (MLG)

IN CRUSE FLIGHT, SMOKE IN COCKPIT, ACRID SMELL IN COCKPIT. PHOTOCELL AND ADJACENT AREA OF CONTROL HEAD MELTED.

Part: LANDING GEAR — MALFUNCTIONED (NOSE)

DURING APPROACH, GEAR HANDLE WAS LOWER. NOSE GEAR DID NOT EXTEND.

Part: BLADE — CRACKED (M/R)

DISCOVERED DURING 500-HOUR INSPECTION, FOUND M/R BLADE SKIN CRACKED AT FORWARD EDGE OF TRIM TAB.

Part: SEAL — LEAKING (MLG LOWER CYL)

IN FIELD 12-97, OIL LEAKING FROM STRUT AND PROBLEM SERVICING STRUT. STRUT WOULD NOT ACTUATE PROPERLY. FOUND LOW OIL LEVER IN CYLINDER PREVENTING PROPER ACTUATING OF PISTON HEAD SNUBBER. THIS ALLOWED UNCONTROLLED EXTENSION OF STRUT PISTON DURING AIRCRAFT LIFT-OFF AND HAMMERING OF PISTON HEAD AGAINST EXTENSION STOP AND SHEARING OF PISTON HEAD RETAINING PINS. THIS ALLOWED PISTON TO SEPARATE FROM PISTON HEAD. PISTON JAMMED PISTON HEAD IN TOP OF STRUT CYLINDER AND PREVENTED PROPER MOVEMENT OF PISTON IN STRUT CYLINDER.

Part: BLADE — DEBONDED (M/R)

DURING 500 HOUR INSPECTION FOUND UPPER SURFACE SKIN DEBONDED APPROXIMATELY 5 INCHES BY 6.50 INCHES AT RIGHT STA 53. SKIN CRACKED AT FORWARD EDGE OF TRIM TAB.

Part: BUSHING — WORN (DAMPER)

DURING SHOP TEAR DOWN AND INSPECTION FOR REPAIR DUE TO WEAK OPERATION, FOUND BUSHING ID WORN PAST LIMITS. SUSPECT CAUSE - CONTAMINATED OIL.

Part: BUSHING — WORN (DAMPER)

DURING SHOP TEAR DOWN AND INSPECTION FOR REPAIR DUE TO WEAK OPERATION, FOUND BUSHING ID WORN PAST LIMITS. SUSPECT CAUSE - CONTAMINATED OIL.