N313AE

Part: HMU — MALFUNCTIONED (LT ENGINE) · airframe 24,325 hrs · 29,959 cycles

CREW REPORTED THAT SHORTLY AFTER TAKEOFF LEFT ENGINE POPPED THEN SHUT DOWN WITH AUTO FEATHER RETURNED TO FIELD. REMOVED AND REPLACED LEFT HMU LEAK CHECK AND OPERATIONAL CHECK GOOD AIRCRAFT RETURNED TO SERVICE

Part: POWER SUPPLY — DISCHARGED (EMERGENCY LIGHTS) · airframe 23,669 hrs · 28,989 cycles

FOUR EMERGENCY TRACK LIGHTS INOPERATIVE. REMOVED AND REPLACED 24LN EMERGENCY LIGHTING POWER SUPPLY IAW SAAB AMM 33-50-10. OPERATIONAL CHECK GOOD, AIRCRAFT RETURNED TO SERVICE.

Part: SWITCH — LOOSE (EMERGENCY LIGHT) · airframe 23,412 hrs · 28,610 cycles

PASSENGER CABIN EMERGENCY LIGHT INOPERATIVE. FOUND LIGHT SWITCH LOOSE, RESEATED SWITCH IAW SAAB AMM 33-50-00. LIGHTS OPERATIONAL CHECKED GOOD, RETURNED AIRCRAFT TO SERVICE.

Part: POWER SUPPLY — FAILED (EMERGENCY LIGHTS) · airframe 23,234 hrs · 28,355 cycles

ALL EMERGENCY LIGHTS INOPERATIVE. REMOVED AND REPLACED ALL FIVE EMERGENCY LIGHT POWER SUPPLIES IAW SAAB AMM 33-50-10. OPERATIONAL CHECK GOOD, RETURNED AIRCRAFT TO SERVICE.

Part: HYDRAULIC LINE — BROKEN (HYD SYSTEM)

LAX - FLT 3241 - DURING CLIMB CREW REPORTED A HYDRAULIC QUANTITY AND PRESSURE LOW. AN EMERGENCY WAS DECLARED AND CREW RETURNED TO LAX. DURING PARKING WHEN THE PROPELLERS WERE FEATHERED THE AIRCRAFT JUMPED CHOCKS AND THE RIGHT PROPELLER STRUCK A TUG. MAINTENANCE REPLACED THE NOSE LANDING GEAR UPLOCK ACTUATOR RETRACT LINE IAW SAAB MM. OPS CHECK WAS GOOD, FURTHER WORK WAS DONE TO THE AIRCRAFT PRIOR TO AIRCRAFT RETURNING TO SERVICE. (M)

Part: BATTERY — DISCHARGED (CABIN)

HPN - FLT 4719 - DURING PREFLIGHT, CREW REPORTED THE EMERGENCY FLOOR LIGHTS IN ROW 6, 7, 8B WILL NOT STAY ON. MAINTENANCE REMOVED AND REPLACED EMERGENCY BATTERY 22LN IAW SAAB MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: POWER SUPPLY — DISCHARGED (CABIN)

EMERGENCY LIGHT OUT OVER SEATS 8 AND 10BC. RAI POWER SUPPLY AT 22LN. OPS CHECK GOOD. (M)

Part: BUSHING — CORRODED (ELEVATOR)

BOS - FLT 4566 - DURING CLIMB CREW REPORTED AN ABNORMAL VIBRATION FELT IN THE CONTROL COLUMN, MORE PROMINENTLY IN FORWARD AND BACK MOTION. MAINTENANCE FOUND THE LEFT ELEVATOR PUSH PULL ROD BUSHING CORRODED. PUSH PULL ROD WAS REMOVED AND REPLACED IAW SAAB MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: WARNING SYSTEM — ACTIVATED (COCKPIT)

BOS - FLT 4613 - ABORTED TAKEOFF DUE TO HIGH RIGHT ENGINE OIL TEMP AND RIGHT PROP OIL TEMP. (M)

Part: LEVER — OUT OF RIG (COCKPIT)

DFW - CONFIG WARNING ON TAKEOFF. ABORTED TAKEOFF AND RETURNED TO GATE. RIGGED LEFT CONDITION LEVER IAW AMM 76-10-00. OPS CHECK GOOD. PARAMETERS RUN GOODS. (M)

Part: VALVE — INOPERATIVE (LT ENGINE)

BTV - FLT 4750 - NOTED LOW NR 1 PGB OIL TEMP FOLLOWED BY FLUCTUATING NR 1 PGB OIL PRESS AND NR 1 ENGINE OIL PRESS, APPLIED ENGINE SHUTDOWN PROCEDURE. MAINTENANCE REMOVED AND REPLACED THE PROPELLER OIL TEMPERATURE REGULATOR IAW SAAB MM. OPERATIONAL AND LEAK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: OIL SYSTEM — FLUCTUATES (NR 1 GEARBOX)

BTV - FLT 4750 - NOTED LOW NR 1 PGB OIL TEMP FOLLOWED BY FLUCTUATING NR 1 PGB OIL PRESS AND NR 1 ENGINE OIL PRESS, APPLIED ENGINE SHUTDOWN PROCEDURE. (M)

Part: WARNING LIGHT — ILLUMINATED (COCKPIT)

BOS - MAIN DOOR HANDLE LIGHT CAME ON IN FLIGHT. CREW RETURNED TO BOS. (M)

Part: LIGHT — MALFUNCTIONED (COCKPIT)

FLT 4580 - BOS - FLIGHT STATUS PANEL LIGHTS ALL FAILED AFTER TAKEOFF. RESET C/B, OPS CHECK GOOD IAW AMM. (M)

Part: LIGHT — INOPERATIVE (GALLEY)

BOS - FLT 4894 - CREW REPORTED THE FLIGHT ATTENDANTS EMERGENCY LIGHT ARM BUTTON DOES NOT ILLUMINATE. MAINTENANCE REPLACED ARM LIGHT BUTTON. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: WINDSHIELD — CRACKED (COCKPIT)

BOS - FLT 4617 - DURING CRUISE, FLIGHT CREW REPORTED THE CAPTAINS WINDSCREEN CRACKED. REMOVED AND REPLACED WINDSHIELD IAW AMM. OPS CHECK GOOD. (M)

Part: CIRCUIT BREAKER — MALFUNCTIONED (RT AVIONICS BUS)

BOS - FLT 5129 - RIGHT AVIONICS BUS FAILURE IN FLIGHT. MAINTENANCE REMOVED AND REPLACED RIGHT AVIONICS BUS REMOTE CONTROL BREAKER (RPP) IAW SAAB MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: GOVERNOR — INOPERATIVE (LT ENGINE)

BGR - FLT 4502 - ON TAKEOFF ROLL, LEFT PROP RPM DID NOT GO ABOVE 1100 RPM. TAKEOFF WAS ABORTED. AFTER ABORT, LEFT TORQUE WENT TO 80 PERCENT WITH AUTO IGNITION UNCOMMANDED WHILE IN GROUND IDLE. MAINTENANCE REMOVED AND REPLACED OVERSPEED GOVERNOR IAW SAAB MM. OPERATIONAL AND LEAK CHECK WERE SATISFACTORY AND AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: ENGINE — MALFUNCTIONED (RIGHT)

SRQ - FLT 5365 - LOSS OF OIL PRESSURE ON RIGHT ENGINE. SHUT DOWN ENGINE IN FLIGHT WITH WARNING LIGHT AND 0.0 PRESSURE. REMOVED AND REPLACED RIGHT ENGINE. OPERATIONAL AND LEAK CHECKED GOOD. (M)

Part: POWER SUPPLY — INOPERATIVE (SEAT 6-7-10)

OKC - FLT 5060 - FOUND EMERGENCY EXIT FLOOR PROXIMITY LIGHTS AT SEATS 6, 7 AND 10, AND OVERHEAD LIGHTS AT SEAT 7 AND 8 DO NOT ILLUMINATE. REMOVED AND REPLACED AFT EMERGENCY LIGHT POWER SUPPLY. OPERATIONAL CHECK GOOD. (M)

Part: CONNECTOR — FAILED (CABIN)

DFW - FLT 5113 - EMERGENCY FLOOR PROXIMITY ESCAPE PATH SIGNS AT ROWS 9, 11, 12, AND 14 DO NOT ILLUMINATE. INSTALLED CANNON PLUG AT AFT POWER SUPPLY. OPERATIONAL CHECK GOOD. (X)

Part: BULB — FAILED (CABIN)

DURING PREFLIGHT, THE FLIGHT ATTENDANTS EMERGENCY ARM FAILED TO ILLUMINATE, REPLACED BULB.

Part: PROP CONTL UNIT — FAILED (RT ENGINE)

RIGHT ENGINE PROPELLER RPM WAS UNCONTROLLABE AND STUCK AT 1100 RPM, SHUT DOWN THE ENGINE. MAINTENANCE CHECKED ENGINE RIGGING AND REINDEXED THE PROPELLER CONTROL UNIT.

Part: SWITCH COVER — OUT OF POSITION (CABIN)

EMERGENCY LIGHTS REMAIN ILLUMINATED AFTER SHUTDOWN. MAINTENANCE FOUND THE FLIGHT ATTENDANTS EMERGENCY LIGHT ARM SWITCH COVER HAD SLID DOWN AND WAS DEPRESSING THE ARM SWITCH. COVER WAS REPOSITIONED AND LIGHT FUNCTIONAL CHECKS WERE PERFORMED.

Part: LIGHTS — MALFUNCTIONED (CABIN)

EMERGENCY LIGHTS REMAINED ILLUMINATED AFTER SWITCHING THEM OFF PRIOR TO ENGINE SHUTDOWN. MAINTENANCE PERFORMED RESET FUNCTION CHECKS OF THE EMERGENCY LIGHT SYSTEM AND ALL CHECKS WERE NORMAL.

Part: DECU — DEFECTIVE (RT ENGINE)

DURING TAKEOFF, THE RIGHT ENGINE POWER SURGED WITH HIGH A TORQUE INDICATION. FEATHERED RIGHT ENGINE AND ABORTED TAKEOFF AT 40 KNOTS. REPLACED THE RIGHT ENGINE DECU (DIGITAL ENGINE CONTROL UNIT).

Part: AC GENERATOR — DEFECTIVE (LT ENGINE)

IN FLIGHT THE LEFT AC GENERATOR LIGHT ILLUMINATED FOLLOWED BY THE LEFT INTAKE LIGHT ON. GROUND CREW NOTICED FIRE AND SMOKE COMING FROM THE LEFT AC GENERATOR EXHAUST PORT, THE FIRE BOTTLE WAS DISCHARGED. REPLACED THE LEFT FIRE BOTTLE AND THE LEFT AC GENERATOR.

Part: HYD LINE — RUPTURED (RT MLG BRAKE)

WHEN SETTING THE PARKING BRAKE THE HYDRAULIC PRESSURE WENT TO ZERO, LOSS OF HYDRAULICS DUE TO A RUPTURED LINE IN THE RIGHT MAIN LANDING GEAR. MAINTENANCE REPLACED A SWIVAL JOINT ASSEMBLY AND THE BRAKE HOSE TO THE NR 4 BRAKE ASSEMBLY.

Part: COMPRESSOR — STALLED (LT/RT ENGINE)

AT APPROXIMATELY 200 FEET ALTITUDE AFTER TAKEOFF, THE LEFT ENGINE POWER DROPPED BACK TO 40 PERCENT TORQUE, ENGINE FLUCTUATED WITH A HAMMERING SOUND. THE RIGHT ENGINE THEN FOLLOWED THE SAME INDICATIONS. THE CTOT HAD BEEN AT 100 PERCENT AND HAD NOT BEEN TOUCHED AT THAT POINT. PASSENGERS REPORTED FLAMES FROM BOTH ENGINE EXHAUST STACKS. THE AIRCRAFT RETURNED TO FIELD. IT WAS DETERMINED THAT THE AIRCRAFT HAD CONSECUTIVE COMPRESSOR STALLS ON THE LEFT ENGINE THEN THE RIGHT. MAINTENANCE REPLACED THE CTOT PANEL PART NUMBER 7239060503, SERIAL NUMBER 0237. THE LEFT AND RIGHT ENGINES WERE REPLACED, THE AIRCRAFT WAS TEST FLOWN AND RETURNED TO SERVICE.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING PREFLIGHT CABIN FLOOR EMERGENCY LIGHT NR 2 AND NR 3 AND OVERHEAD LIGHTS ABOVE SEATS 3A AND 5A CAME ON FOR APPROXIMATELY FOR 10 SECONDS THEN WENT OUT. MAINTENANCE REPLACED 2 EMERGENCY LIGHT BATTERY PACKS.

Part: SENSOR LOOP — CHAFED (LT ENGINE)

THE LEFT ENGINE FIRE WARNING WOULD NOT TEST ON PREFLIGHT. REPLACED LEFT ENGINE AFT FIRE DETECTOR SENSOR LOOP IAW SAAB AMM 26-11-00.

Part: SMOKE DETECTOR — DIRTY (AVIONICS COMPT)

AVIONICS SMOKE LIGHT ILLUMINATED IN FLIGHT, NO SMOKE WAS NOTED BY THE CREW. SMOKE DETECTOR WAS DEFERRED IAW THE MEL 26-3. THE MEL WAS CLEARED BY CLEANING THE SMOKE DETECTOR.

Part: CONTROL CABLE — FAILED (RT COND LEVER)

UPON ARRIVAL AT THE GATE THE RIGHT CONDITION LEVER SEVERED. THE CREW WAS UNABLE TO SHUTDOWN THE RIGHT ENGINE WITH THE CONDITION LEVER. FUEL WAS OBSERVED COMING OUT OF THE RIGHT NACELLE. THE RIGHT FIRE HANDLE WAS PULLED AND THE ENGINE SHUTDOWN IN 20 TO 30 SECONDS, THE PROPELLER DID NOT FEATHER. PASSENGERS WERE EVACUATED THROUGH THE FORWARD AIRSTAIR. MAINTENANCE FOUND THE RIGHT FORWARD CONDITION LEVER CABLE SEVERED AND THE NR 3 PULLEY IN THE FORWARD BRACKET ASSEMBLY BROKEN. THE CABLE AND PULLEY WERE REPLACED AND THE AIRCRAFT WAS RETURNED TO SERVICE. PULLEY PART NUMBER IS MS202154.

Part: CTOT — MALFUNCTIONED (LT ENGINE)

THE CREW REPORTED, AFTER TAKEOFF THE LEFT ENGINE SPUTTERED 3 TIMES AND OV TEMPERATURE ILLUMINATED BRIEFLY WHILE THE CTOT WAS BEING TURNED OFF. THE AIRCRAFT RETURNED TO FIELD WITHOUT INCIDENT. MAINTENANCE INSPECTED THE LEFT ENGINE COMPRESSORS FOR CLEANLINESS AND RUB. NO RUB WAS FOUND BUT THE FIRST STAGE COMPRESSOR WAS FOUND TO BE DIRTY. THE AIRCRAFT WAS GROUND RAN AND THE CTOT WAS FOUND TO BE MALFUNCTIONING. THE COMPRESSOR WASH WAS SCHEDULED AND THE CTOT WAS DEFERRED IAW THE MEL. THE AIRCRAFT WAS RELEASED FOR SERVICE WITH NO FURTHER PROBLEMS.

Part: WEU — MALFUNCTIONED (COCKPIT)

AIRCRAFT ABORTED TAKEOFF DUE TO THE AUTOCOARSEN LIGHT ILLUMINATING AT 40 KNOTS. MAINTENANCE RERACKED THE WEU AND RELEASED THE AIRCRAFT.

Part: ACCUMULATOR — FAILED (LT INBD BRAKES)

ON TAXI, THE CAPTAIN REPORTED THE BRAKES FAILED ON THE LEFT SIDE, BOTH PEDALS. RETURNING TO THE GATE, BRAKE EFFECTIVENESS WAS RETURNED APPROXIMATELY 25 TO 50 PERCENT. MAINTENANCE REPLACED THE INBOARD BRAKE ACCUMULATOR AND BLED BRAKES. THE AIRCRAFT WAS TAXI CHECKED AND RELEASED TO SERVICE.

Part: CAP — DEFECTIVE (NR 4 A/S XDUCER)

PILOT REPORTED, THE BRAKES FAILED ON THE CAPTAIN'S SIDE, BOTH PEDALS. CYCLED THE BRAKE ANTI-SKID SWITCH WITHOUT RESTORING THE BRAKE EFFECTIVENESS. THIS WAS THE SECOND OCCURANCE OF THE SAME PROBLEM ON THE SAME DAY. MAINTENANCE FOUND THE NR 4 MAIN LANDING GEAR TIRE CAP TO BE LOOSELY FITTED TO THE ANTI-SKID TRANSDUCER. REPLACED THE TIRE CAP, ALL OPERATIONAL CHECKS GOOD. THE AIRCRAFT WAS RELEASED WITH NO FURTHER PROBLEMS.

Part: AIR DISTR — ODOR (CABIN)

FLIGHT 3432 - LAS/LAX - PILOT REPORTED DURING CLIMB AND DESCENT A VERY STRONG ODOR WAS EMITTED FROM THE GASPERS AND A/C VENTS. MAINTENANCE INSPECTED THE RECIRCULATION FAN FILTERS AND INSPECTED THE RIGHT AND LEFT ACM OIL LEVELS. GROUND RUNS PERFORMED ON BOTH ACM PACKS AND ALL CHECKS WERE GOOD. NO ABNORMAL ODOR EMITTED DURING THE GROUND RUN CYCLE. THE AIRCRAFT WAS RETURNED TO SERVICE.