N850US

Part: SKIN — DAMAGED (FUSELAGE)

PIT - FOUND A HOLE IN SKIN .5 INCH BY .375 INCH, STATION 28868 RT SIDE AFT OF APU EXHAUST. REMOVED DOUBLER, FABRICATED NEW DOUBLER PER SRM 53-00-02. (M)

Part: SKIN — DAMAGED (FUSELAGE)

PIT - FOUND TWO HOLES IN SKIN .75 INCH BY .5 INCH AND .5 INCH BY .25 INCH, RT SIDE STATION 29959 AFT OF APU EXHAUST. REPAIRED PER SRM 53-00-02, INSTALLED REPAIR DOUBLER. (M)

Part: INVERTER — INOPERATIVE (CABIN)

IND - LOW LEVEL EMERGENCY FLOOR LIGHTS INOPERATIVE AFT OF ROW 16. MAINTENANCE REPLACED THE 6 VOLT INVERTER AND TWO BATTERY PACKS. (M)

Part: BATTERY PACK — DISCHARGED (CABIN)

IND - LOW LEVEL EMERGENCY FLOOR LIGHTS INOPERATIVE AFT OF ROW 16. MAINTENANCE REPLACED THE 6 VOLT INVERTER AND TWO BATTERY PACKS. (M)

Part: BATTERY PACK — DISCHARGED (CABIN)

IND - MAINTENANCE FOUND TWO INOPERATIVE CEILING EMERGENCY LIGHTS IN MID CABIN. MAINTENANCE REPLACED THE BATTERY PACK. (M)

Part: SWITCH — FAILED (MLG)

PIT - FLT 670 - ON TAKEOFF, THE LANDING GEAR WOULD NOT COME UP. OVERRIDE WAS USED AND GEAR CAME UP. TAKEOFF CONFIGURATION RED WARNING MESSAGE. THEN FLT/GRD CONFIGURE AMBER MESSAGE, RED WARNING WENT OUT; ALSO, GOT ANTI-SKID AMBER MESSAGE AND STAB TRIM INDICATOR RAN TO FULL DOWN, SOME DOWN PRESSURE BUT NOT EXCESSIVE. DID OPERATE ELECTRICALLY. FLIGHT RETURNED TO PIT AND LANDED WITHOUT FURTHER INCIDENT. JACKED ACFT AND RETRACTED GEAR MANY TIMES. MAINTENANCE WAS UNABLE TO DUPLICATE ANY OF THE PROBLEMS. MAINTENANCE REPLACED BOTH MAIN GEAR GROUND FLIGHT SWITCHES PER FOKKER MM 32-63-01. AN AUTOPILOT CHECK WAS PERFORMED WITH NO DISCREPANCY FOUND. (X)

Part: POWER SUPPLY — FAILED (CABIN)

IND - FOUND AISLE EMERGENCY LIGHTS AT ROWS 4 AND 5 INOPERATIVE. MAINTENANCE REPLACED THE BATTERY PACK POWER SUPPLY. (M)

Part: SYNCHRONIZER — FAILED (LEFT TE FLAP)

FLT 271 - RIC-LGA - AFTER TAKEOFF, FLAPS WOULD NOT RETRACT PAS 8 DEGREES. NO EMERGENCY WAS DECLARED. FLIGHT RETURNED TO RIC WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED LEFT OUTBOARD FLAP SYNCHRO. (M)

Part: OUTFLOW VALVE — FAILED (NR 1)

AVL-CLT - FLT 1062 - AFTER TAKEOFF, NR 1 AUTOPRESSURE FAILED. NR 2 AUTOPRESSURE WAS ON MEL. CAPTAIN WENT TO MANUAL AND WAS UNABLE TO CONTROL PRESSURE. FLIGHT CLIMBED TO FL060 AND CABIN PRESSURE ALTITUDE CLIMBED 2000 FPM. CREW DESCENDED AND SHUT DOWN PACKS. FLIGHT RETURNED TO AVL WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED NR 2 PRESSURE CONTROLLER, PRIMARY OUTFLOW VALVE, AND RELAY K3515. REFERENCE USAAF96103.

Part: CONTROLLER — FAILED (NR 1)

AVL-CLT - FLT 1062 - AFTER TAKEOFF, NR 1 AUTOPRESSURE FAILED. NR 2 AUTOPRESSURE WAS ON MEL. CAPTAIN WENT TO MANUAL AND WAS UNABLE TO CONTROL PRESSURE. FLIGHT CLIMBED TO FL060 AND CABIN PRESSURE ALTITUDE CLIMBED 2000 FPM. CREW DESCENDED AND SHUT DOWN PACKS. FLIGHT RETURNED TO AVL WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED NR 2 PRESSURE CONTROLLER, PRIMARY OUTFLOW VALVE, AND RELAY K3515. (M)

Part: RELAY — FAILED (NR 1)

AVL-CLT - FLT 1062 - AFTER TAKEOFF, NR 1 AUTOPRESSURE FAILED. NR 2 AUTOPRESSURE WAS ON MEL. CAPTAIN WENT TO MANUAL AND WAS UNABLE TO CONTROL PRESSURE. FLIGHT CLIMBED TO FL060 AND CABIN PRESSURE ALTITUDE CLIMBED 2000 FPM. CREW DESCENDED AND SHUT DOWN PACKS. FLIGHT RETURNED TO AVL WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED NR 2 PRESSURE CONTROLLER, PRIMARY OUTFLOW VALVE, AND RELAY K3515. REFERENCE USAAF96103.

Part: COALESCER BAG — CONTAMINATED (CABIN)

CLT - FLT 1543 - DURING CLIMB-OUT OF CLT, BOTH LAVATORY SMOKE DETECTORS ACTIVATED IN AIRCRAFT. CAPTAIN DECLARED EMERGENCY AND RETURNED TO FIELD IN CLT. FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCE FOUND THE RT PACK OIL QUANTITY OVERSERVICED AND WATER SEPARATOR CONTAMINATED WITH OIL. MAINTENANCE REPLACED WATER SEPARATOR BAG AND DRAINED OIL TO PROPER LEVEL. RAN PACK. NO SMOKE NOTED FROM PACK. (X)

Part: OUTFLOW VALVE — DEACTIVATED (CABIN)

PIT - AFTER TAKEOFF, AIRCRAFT WOULD NOT PRESSURIZE IN AUTOMATIC OR MANUAL MODES. FLIGHT RETURNED TO PIT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REACTIVATED THE OUTFLOW VALVE WHICH WAS DEACTIVATED DUE TO PREVIOUS WORK. (M)

Part: APU — FAILED (APU COMPARTMENT)

CRW - FL 7007 - EN ROUTE TYS-PIT - CABIN ALTITUDE BEGAN CLIMBING AND WAS UNCONTROLLABLE. CREW DESCENDED AND DIVERTED TO CRW. BOTH PACKS WERE REPORTED AS OPERATING SATISFACTORILY. MAINTENANCE FOUND A HOLE IN THE AFT PRESSURE BULKHEAD DUE TO AN UNCONTAINED APU FAILURE. THE APU HAD FAILED ON THE GROUND IN TYS. THE FACT THAT THE FAILURE WAS UNCONTAINED WAS NOT RECOGNIZED PRIOR TO FLIGHT. THIS IS THE FIRST REPORTED UNCONTAINED FAILURE OF THIS MODEL APU. (M)

Part: AIR DISTR — ODOR (CABIN)

CLT - FL 1112 - DURING TAKEOFF GROUND ROLL, CREW NOTED SMELL OF BURNING RUBBER. CREW LEFT GEAR DOWN, SMELL DID NOT DISSIPATE. CREW DECLARED AN EMERGENCY, DUMPED CABIN AIR, AND RETURNED TO CLT. FLIGHT LANDED WITH NO FURTHER INCIDENT. MAINTENANCE RAN BOTH ENGINES AND BOTH PACKS. CABIN WAS PRESSURIZED TO APPROXIMATELY FOUR PSI. SMELL COULD NOT BE DUPLICATED. AIRCRAFT RELEASED FOR SERVICE. (M)

Part: EEL WIRING — LOOSE (CABIN)

PIT - THE EMERGENCY CENTER CABIN OVERWING STANDBY LIGHT WAS INOPERATIVE. MAINTENANCE REPAIRED A LOOSE CONNECTION ON WIRING TO THE LIGHT. OPERATIONS CHECKED GOOD. (Z)

Part: FUEL SYS — VENTING (LT/RT WING)

CLT - FLT NR 0330 - ON TAKEOFF, THE LEFT AND RIGHT WINGS WERE OBSERVED TO HAVE FUEL VENTING FROM THEM. FLIGHT RETURNED TO CLT WITHOUT INCIDENT. MAINTENANCE ACCOMPLISHED AN OPERATIONAL TEST OF THE FUEL AUTO FEED SYSTEM. OPERATIONS CHECKED GOOD. (Z)