N1334U

Part: POWER SUPPLY — DISCHARGED (CABIN) · airframe 90,390 hrs · 94,200 cycles

DURING LINE CHECK, MAINTENANCE FOUND THAT THE OVERWING EMERGENCY EXIT SIGNS ON BOTH SIDES OF THE AIRCRAFT WERE INOPERATIVE. MAINTENANCE REPLACED THE EMERGENCY LIGHT POWER SUPPLY AND OPERATIONALLY CHECKED THE SYSTEM.

Part: SPLICE — CRACKED (LONGERON) · airframe 80,227 hrs · 86,409 cycles

DURING "M" CHECK FOUND CRACK IN LONGERON 30 SPLICE FITTING FROM BS 580 TO BS 604. REPAIRED PER EA 99-198614.

airframe 76,625 hrs · 83,758 cycles

DURING CLIMB, FLIGHT ATTENDANT NOTICED SMOKE IN CABIN AND FORWARD LAV ALARM SOUNDED. FLIGHT CREW RETURNED AIRCRAFT TO DEPARTURE AIRPORT AND PERFORMED AN UNEVENTFUL LANDING. MAINTENANCE FOUND AN APU OIL LEAK. OIL LEAK WAS CORRECTED, CLEANED APU AREA, AND COMPLIED WITH PACK BURNOUT PROCEDURE. REPLACED COALESCER BAGS. OPERATIONAL CHECK OK.

Part: SKIN — CRACKED (FUSELAGE) · airframe 73,688 hrs · 79,201 cycles

DURING AN L-CHECK. THE LOWER AFT CORNER OF THE SERVICE DOOR SKIN WAS FOUND WITH CRACKS. THE SUBJECT SKIN PANEL WAS TRIMMED AND RESTORED USING A SPLICE AFT OF THE DOOR CUT OUT USING EA 99-169344 LOG PAGE 1577098. THE EXISTING SKIN ASSEMBLY 5911407-33 IS MANUFACTURE PART NUMBER 2953659-1.

Part: PUMP — FAILED (RT ENGINE) · airframe 73,452 hrs · 81,445 cycles

DURING FLIGHT AT FL350, THE RIGHT ENGINE CEASED OPERATING. THE FLIGHT CREW FOLLOWED COM PROCEDURES, DIVERTED TO CLE, AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE ENGINE DRIVEN FUEL PUMP LOCATED ON THE RIGHT ENGINE. OPERATIONAL CHECK NORMAL.

Part: ACTUATOR — FAILED (NLG)

DURING APPROACH, CREW HEARD A LOUD THUD FROM THE NOSE GEAR AREA. FLAP/RUDDER STOP LIGHT ILLUMINATED, HYDRAULIC PRESSURE WAS BETWEEN 800 TO 1000 PSI, AND GEAR DOOR OPEN LIGHT ILLUMINATED. FLIGHT CREW DECLARED AN EMERGENCY AND THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE NOSE GEAR RETRACT CYLINDER, RIGHT AUXILIARY HYDRAULIC PUMP, RIGHT ENGINE DRIVEN PUMP, AND HYDRAULIC FILTERS. ALSO, REPLACED THE RIGHT MAIN GEAR DOOR AND LEFT MAIN GEAR DOOR SKID PADS DUE TO DAMAGE INCURRED ON LANDING. LEAK AND OPERATIONAL CHECK NORMAL.

Part: RELEASE MECH — OUT OF ADJUST (TAIL CONE)

DURING TAIL CONE FUNCTION CHECK, FOUND THAT INADEQUATE FORCE WAS REQUIRED TO DEPLOY TAIL CONE USING THE INTERIOR HANDLE. RIGGED TAIL CONE DEPLOYMENT SYSTEM, FUNCTIONAL CHECK OK.

Part: BULKHEAD — CORRODED (BS 513)

DURING M-CHECK, FOUND CORROSION ON LONGERON 29L AT FS 513. REPAIRED PER EA 99-154884.

Part: FITTING — CRACKED (BS 589)

DURING M-CHECK, FOUND CRACK IN END FITTING FOR LONGERON 28L AT FS 589. REPLACED FITTING (P/N 5920332-1N) PER SRM 51-30-2.

Part: FITTING — CORRODED (BS 589)

DURING M-CHECK, FOUND CORROSION OF END FITTING FOR LONGERON 26L AT FS 589. REPLACED FITTING (P/N 3920334-1N) PER SRM 51-30-2.

Part: BULKHEAD — CRACKED (BS 110)

DURING M-CHECK, FOUND CRACK IN NOSE LANDING GEAR WHEEL WELL HORIZONTAL PRESSURE PANEL FS 110 AT THE LEFT OUTBOARD VERTICAL BEAM. REPAIRED PER EA 99-154798.

Part: BULKHEAD WEB — CRACKED (BS 37)

DURING M CHECK, FOUND CRACK IN THE WEB OF FS 37 BULKHEAD AS VIEWED THROUGH THE ACCESS HOLE ABOVE THE RIGHT UPPER RADOME GUIDE PIN. REPAIRED PER EA 99-154843.

Part: BULKHEAD WEB — CRACKED (BS 37)

DURING M CHECK, FOUND A CRACK IN THE WEB OF THE FS 37 BULKHEAD AS VIEWED THROUGH ACCESS HOLE ABOVE THE LEFT UPPER RADOME GUIDE PIN HOLE. REPAIRED PER EA 99-154843.

Part: POWER SUPPLY — INOPERATIVE (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND AFT FLIGHT ATTENDANT, TAIL COMPARTMENT AND NACELLE EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY AND CHARGER TO B5-27 UNIT, OPERATIONAL CHECK NORMAL.

Part: CONNECTORS — DIRTY (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND THE RIGHT OVERWING EMERGENCY EXIT AND AFT AIRSTAIR EMERGENCY LIGHTS INOPERATIVE. CLEANED CONNECTION IN AIRSTAIR LAMP AND TIGHTENED GROUND LUG ON LIGHT ASSEMBLY AT FORWARD RIGHT OVERWING EXIT SIGN. OPERATIONAL CHECK NORMAL.

Part: STRUT — UNDERSERVICED (NLG)

AIRCRAFT FAILED TO SHIFT FROM GROUND MODE TO FLIGHT MODE AFTER TAKEOFF. FLIGHT WAS RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE SERVICED NOSE GEAR STRUT TO PROPER LEVELS. OPERATIONAL CHECK NORMAL ON GEAR CYCLE.

Part: LIGHT — SHORTED (RT MLG)

RIGHT MAIN LANDING GEAR GREEN LIGHT REMAINED ON AFTER GEAR RETRACTION. FLIGHT WAS RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND RIGHT MAIN GEAR GREEN INDICATION LIGHT SHORTING OUT. REPLACED LIGHT ASSEMBLY, OPERATIONAL CHECK NORMAL.

Part: WIRE — BROKEN (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND ROWS 11, 12 AND 13 AISLE EMERGENCY LIGHTS WOULD NOT SHUT OFF. WIRES TO SEAT TRACK WERE FOUND TO BE CHAFED. REPAIRED WIRE AND REPOSITIONED INSIDE RACEWAY, OPERATIONAL CHECK NORMAL.

Part: BATTERY PACK — DISCHARGED (CABIN)

FLIGHT ATTENDANT REPORTED EMERGENCY PATH LIGHTS REMAINING ON AT EMERGENCY ROWS DURING FLIGHT. MAINTENANCE REPLACED BOTH LEFT OVERWING EMERGENCY BATTERY PACKS, OPERATIONAL CHECK NORMAL.

Part: BATTERIES — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND AFT OVERWING EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED BATTERIES IN MID OVERHEAD SECTION FOR OVERWING DOORS. OPERATIONAL CHECK NORMAL.

Part: BATTERY PACK — DISCHARGED (TAIL COMPT)

DURING LINE MAINTENANCE INSPECTION, FOUND TAIL COMPARTMENT AND NACELLE EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACKS, OPERATIONAL CHECK NORMAL.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND RIGHT FORWARD OVERWING EMERGENCY EXIT SIGN VERY DIM. REPLACED BATTERY PACK, OPERATIONAL CHECK NORMAL.

Part: BATTERY — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND FORWARD LEFT AND RIGHT OVERWING EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED BATTERY, OPERATIONAL CHECK NORMAL.

Part: BATTERY — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND FORWARD LEFT AND RIGHT OVERWING EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED BATTERY. OPERATIONAL CHECK NORMAL.

Part: T-DUCTS — LACK OF LUBE (LT/RT LE FLAPS)

DURING APPROACH, SLAT DISAGREEMENT LIGHT ILLUMINATED AND AIRCRAFT ROLLED SLIGHTLY TO THE RIGHT ON SLAT EXTENSION. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED PADS ON RIGHT TELESCOPE DUCT AND LUBED LEFT DUCT, OPERATIONAL CHECK NORMAL.

Part: RADAR — FAILED (COCKPIT)

WEATHER RADAR SYSTEM FAILED DURING CLIMBOUT. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY ON GROUND. REPLACED RADAR TRANSCEIVER AND INDICATOR AS A PRECAUTION, OPERATIONAL CHECK NORMAL.

Part: LINK — BROKEN (NLG DOOR)

A LOUD VIBRAITON WAS COMING FROM NOSE GEAR AREA AFTER TAKEOFF. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED BROKEN NOSE GEAR DOOR LINK AND CABLE, OPERATIONAL CHECK NORMAL.

Part: SWITCH — MALFUNCTIONED (GEAR LEVER)

DURING APPROACH INTO DTW, ALL THREE RED UNSAFE LIGHTS REMAINED ON AFTER GEAR EXTENSION. RECYCLED GEAR AND NORMAL INDICATIONS WERE ACHIEVED. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED LANDING GEAR LEVER WARNING SWITCH S1-89. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.

Part: RETRACT MECH — OUT OF ADJUST (NLG)

ON DESCENT, THE NOSE GEAR GREEN LIGHT FAILED TO ILLUMINATE ON GEAR EXTENSION. ACCOMPLISHED COCKPIT OPERATING MANUAL PROCEDURE AFTER GEAR RETRACTION. GEAR LIGHTS NORMAL ON SECOND EXTENSION. NOSE GEAR OVERCENTER LINKAGE WAS RESHIMMED AND ADJUSTED. PERFORMED NORMAL AND FREEFALL OPERATION OF GEAR, ALL OPERATIONS CHECKED OK.

Part: DOWNLOCK — MALFUNCTIONED (NLG)

DURING APPROACH, NOSE LANDING GEAR GREEN LIGHT DID NOT ILLUMINATE AFTER GEAR EXTENSION. RED UNSAFE LIGHT WAS OUT. RECYCLED GEAR AND NORMAL INDICATIONS WERE ACHIEVED. FLIGHT DIVERTED TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE REPAIRED BROKEN WIRE G200L24 AT SPLICE IN NOSE WHEEL WELL. ALSO, REPLACED NOSE GEAR UPLIMIT SWITCH AND DIMMING BOX, OPERATIONAL CHECK NORMAL ON GEAR SWING.

Part: LOCK SWITCH — FROZEN (NOSE GEAR)

DURING APPROACH, NOSE LANDING GEAR GREEN LIGHT DID NOT ILLUMINATE AFTER GEAR EXTENSION. RECYCLED GEAR AND NORMAL INDICATIONS WERE ACHIEVED. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NOSE GEAR LOCK SWITCH COVERED WITH ICE. CLEANED LOCK SWITCH, OPERATIONAL CHECK NORMAL ON GROUND.

Part: SWITCH — OUT OF ADJUST (NLG)

DURING APPROACH, NOSE LANDING GEAR GREEN LIGHT DID NOT ILLUMINATE AFTER GEAR EXTENSION. RECYCLED GEAR AND NORMAL INDICATIONS WERE ACHIEVED. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE ADJUSTED NOSE GEAR LOCK SWITCH ACTUATING BOLT. OPERATIONAL CHECK NORMAL ON GEAR SWING.

Part: WEB — CRACKED (BS 83)

DURING H-CHECK, FOUND A 6 INCH CRACK IN THE HORIZONTAL PRESSURE PANEL AT FS 83 AT THE LEFT VERTICAL FRAME ATTACH POINT. REPAIRED THE PANEL (P/N 9910073-3) PER EA 99-111213.

Part: FITTING — CRACKED (CARGO DOOR)

DURING H-CHECK, FOUND A CRACK IN THE AFT CARGO DOOR LOWER BEAM FORWARD END FITTING. REPLACED FITTING.

Part: BLKHD FITTING — CRACKED (BS 756)

DURING H-CHECK, FOUND A CRACK IN THE LEFT KEEL TO BULKHEAD ATTACH FITTING FS 756. REPLACED FITTING (P/N 3915135-505N) PER SRM 51-30.

Part: BULKHEAD FITTING — CRACKED (AFT PRESS BLKHD)

DURING H-CHECK, FOUND A CRACK IN THE FORWARD CARGO COMPARTMENT AFT BULKHEAD FITTING AT LONGERON 24L. REPLACED FITTING PER SRM 51-30-2, 51-30-5.

Part: PULLEY BRACKET — FAILED (LT TE FLAP)

SLAT DISAGREEMENT LIGHT ILLUMINATED WITH ASYMMETRIC SLATS ON APPROACH. THERE WAS NO BLUE SLAT EXTEND LIGHT. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LEFT INBOARD SLAT DRIVE NR 1 PULLEY, CABLE AND BRACKET PULLED FROM FORWARD SPAR. REPLACED PULLEY, BRACKET AND DAMAGED RIBS. ADJUSTED SLAT CABLES, OPERATIONAL CHECK NORMAL.

Part: LINKAGE — LACK OF LUBE (LEFT ENGINE)

LEFT THROTTLE WAS STICKING WHEN POWER WAS PULLED BACK AT TOP OF CLIMB. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE CLEANED AND LUBED PUSH/PULL LINKAGE ON LEFT ENGINE, OPERATIONAL CHECK NORMAL.

Part: WIRE — BROKEN (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND FORWARD CABIN FLOOR PROXIMITY EMERGENCY LIGHTS INOPERATIVE. REPLACED BROKEN WIRING AT ROW 1, OPERATIONAL CHECK NORMAL.

Part: ANTI ICE DUCT — BINDING (LT LE FLAPS)

SLAT DISAGREEMENT LIGHT ILLUMINATED WITH NOTICEABLE ROLL TO THE RIGHT WHEN SLATS WERE EXTENDED FOR LANDING INTO DTW. CYCLED SLATS WITH SAME RESULTS. SUCCESSFUL LANDING WAS ACCOMPLISHED USING FLAPS ONLY. NOTE: BLUE SLAT EXTEND LIGHT NEVER ILLUMINATED. MAINTENANCE FOUND LEFT ANTI-ICE T-DUCT BINDING. REPLACED DUCT. ALSO, LUBED SLAT ROLLERS. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.

Part: RETRACT MECH — LACK OF LUBE (LE SLAT)

ON APPROACH, SLAT DISAGREEMENT LIGHT ILLUMINATED AND ROLL WAS EXPERIENCED. A SUCCESSFUL LANDING WAS ACCOMPLISHED WITH SPLIT FLAP/SLAT HANDLE. CHECKED SLAT RIGGING AND RETRACT/EXTEND SWITCHES, ALL CHECKED GOOD. LUBED ANTI-ICE TELESCOPING DUCTS.

Part: STRUT — REQD SERVICE (NLG)

DURING CLIMB, THE NOSE LANDING GEAR WOULD NOT RETRACT AND THE AIRCRAFT DID NOT SHIFT INTO FLIGHT MODE. AIRCRAFT RETURNED TO YUL AND LANDED WITHOUT INCIDENT. SERVICED NOSE LANDING GEAR STRUT AND OPERATIONAL CHECK GOOD.