N8928E

Part: WIRE — BROKEN (EMERGENCY LIGHTS) · airframe 77,141 hrs · 80,320 cycles

DURING LINE CHECK, MAINTENANCE FOUND THAT THE EMERGENCY PATHWAY LIGHTING AT SEA 20R IN THE CABIN WAS INOPERATIVE. MAINTENANCE REPAIRED A BROKEN WIRE AND FUNCTIONALLY CHECKED THE SYSTEM.

Part: BATTERY PACK — DISCHARGED (CABIN) · airframe 76,957 hrs · 80,178 cycles

DURING LINE CHECK, MAINTENANCE FOUND THAT THE EMERGENCY PATHWAY LIGHTING FOR THE CATWALK IN THE TAIL COMPARTMENT WAS INOPERATIVE. MAINTENANCE REPLACED THE BATTERY PACK AND THE LIGHTS RETURNED TO AN OPERATIONAL CONDITION.

Part: SKIN — CRACKED (FUSELAGE) · airframe 71,095 hrs · 75,162 cycles

DURING "L" CHECK FOUND CRACK IN FUSELAGE SKIN AT BS 1038 BETWEEN L12R AND L13R. REPAIRED PER EA 99-206865.

Part: SEAL — MIGRATED (OUTFLOW VALVE) · airframe 69,590 hrs · 73,735 cycles

WHEN CLIMBING THROUGH FL250 THE CREW NOTICED THE CABIN ALTITUDE WAS AT 8000 FEET AND CLIMBING AT 500 FPM. THE AIRCRAFT WAS LEVELED AT FL250 BUT THE CABIN CONTINUED TO CLIMB. CREW DECLARED AN EMERGENCY, INITIATED A RAPID DESCENT TO 10,000 FEET, COMPLIED WITH THE EMERGENCY CHECKLIST & COM, AND DIVERTED TO BNA. LANDING WAS UNEVENTFUL AND MAINTENANCE FOUND THE SEAL MIGRATING OUT OF POSITION ON THE NEGATIVE PRESSURE RELIEF VALVE PREVENTING THE VALVE FROM SEATING. THE SEAL WAS REINSTALLED ON THE RELIEF VALVE, A VESSEL LEAK CHECK PERFORMED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: LONGERON — CORRODED · corrosion level 2 · airframe 62,534 hrs · 67,320 cycles

During HCK in ATL, The 5911415-113 Longeron #11 left was found to have corrosion on the lower horizontal flange at the fwd end (sta 756). Material 0.050 7075-t6 extrusion. Repaired per EA 99-185303.

Part: OUTFLOW VALVE — FAILED (FUSELAGE) · airframe 59,341 hrs · 64,598 cycles

AUTOMATIC CABIN PRESSURE CONTROL FAILED EN ROUTE PIT. FLIGHT DESCENDED TO 10,000 FEET AND PROCEEDED TO DESTINATION. MAINTENANCE REPLACED THE OUTFLOW VALVE, THERMOSTAT, AND ANTICIPATOR AS A PRECAUTION. NO FAULTS NOTED ON BITE TEST OF PRESSURE CONTROLLER. AIRCRAFT RETURNED TO SERVICE.

Part: POWER SUPPLY — FAILED (TAIL)

DURING LINE MAINTENANCE INSPECTION, FOUND CATWALK AND TAILCONE RELEASE HANDLE EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY. OPERATIONAL CHECK NORMAL.

Part: BATTERY PACK — DISCHARGED (TAIL COMP)

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

Part: BATTERY PACK — DISCHARGED (TAIL COMP)

DURING LINE MAINTENANCE INSPECTION, FOUND TAILCONE ESCAPE PATH EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACK. OPERATIONAL CHECK NORMAL.

Part: POWER SUPPLY — INOPERATIVE (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND FLOOR PROXIMITY EMERGENCY ESCAPE PATH LIGHTS IN TAILCONE AREA INOPERATIVE. REPLACED POWER SUPPLY. OPERATIONAL CHECK NORMAL.

Part: BATTERY — DISCHARGED (CABIN)

FLIGHT ATTENDANT REPORTED EMERGENCY FLASHLIGHT AS BEING INOPERATIVE. REPLACED BATTERY TO FLASHLIGHT. OPERATIONAL CHECK NORMAL.

Part: POWER SUPPLY — INOPERATIVE (CABIN)

DURING LINE CHECK, FOUND FORWARD CEILING EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY. OPERATION CHECKS GOOD.

Part: PIN — NOT SEATED (TAIL COMPT)

DURING LINE MAINTENANCE INSPECTION, FOUND TAIL COMPARTMENT EMERGENCY LIGHTS AT CATWALK INOPERATIVE. RESEATED PIN WHICH HAS PULLED OUT OF DISCONNECT INSIDE CATWALK, OPERATIONAL CHECK NORMAL.

Part: LONGERON — CRACKED (BS 570)

DURING L-CHECK, FOUND A CRACK IN LONGERON 30 AT FS 570. REPAIRED PER EA 99-113312.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING PERIODIC CHECK, LEFT AND RIGHT AFT OVERWING EMERGENCY EXIT SIGN LIGHTS FAILED TEN MINUTE TEST. REPLACED BATTERY PACK. OPERATIONAL CHECK NORMAL.

Part: ACTUATOR — FAILED (OUTFLOW VALVE)

AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKEOFF, FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED OUTFLOW VALVE ACTUATOR. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND THE RIGHT EXTERIOR EMERGENCY LIGHT INOPERATIVE. REPLACED BATTERY PACK, OPERATIONAL CHECK NORMAL.

Part: DOOR SWITCH — MALFUNCTIONED (LT/RT MLG)

DURING APPROACH, LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR WAS EXTENDED. EMERGENCY GEAR EXTENSION PROCEDURES WERE UTILIZED AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT AND RIGHT GEAR DOOR SWITCHES. ALSO, TIGHTENED BOLTS TO THE LEFT DOOR LOCK AND SWITCH STRIKER ASSEMBLY. LEFT GEAR DOOR SKID WAS REPLACED DUE TO DAMAGE INCURRED ON LANDING, OPERATIONAL CHECK NORMAL.

Part: FUSE — BLOWN (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND FORWARD CABIN EMERGENCY LIGHTS INOPERATIVE. REPLACED BLOWN FUSE, OPERATIONAL CHECK NORMAL.

Part: OIL PRESS IND — MALFUNCTIONED (COCKPIT)

THE NR 1 ENGINE OIL PRESSURE INDICATION WAS ABOVE THE RECOMMENDED MAXIMUM AND FLUCTUATING ON TAKEOFF ROLL. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REPLACED THE OIL PRESSURE INDICATOR WITH A SERVICEABLE UNIT.

Part: BATTERY PACK — DISCHARGED (TAIL CONE)

DURING LINE MAINTENANCE INSPECTION, FOUND TAIL CONE HANDLE AND CATWALK EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERY PACK, OPERATIONAL CHECK NORMAL.

Part: SWITCH — FAILED (FLAP POSITION)

FLAP/RUDDER STOP INOPERATIVE LIGHT ILLUMINATED DURING TAKEOFF ROLL. ABORTED TAKEOFF AND RETURNED TO GATE. MAINTENANCE REPLACED FLAP SWITCH S1-351 AND OPERATIONAL CHECK NORMAL.

Part: POSITION SWITCH — STUCK (TE FLAPS)

LANDING GEAR WARNING HORN SOUNDED AFTER GEAR HANDLE WAS RAISED, CIRCUIT BREAKER WAS PULLED AND HORN CEASED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND FLAP SWITCH S1-85 STUCK CLOSED. REPLACED SWITCH, OPERATIONAL CHECK NORMAL ON GEAR SWING.

Part: WINDSHIELD — CRACKED (LT COCKPIT)

DURING FLIGHT, THE LEFT WINDSHIELD OUTER PANE CRACKED. RETURNED TO DTW WITHOUT FURTHER INCIDENT. REPLACED THE LEFT WINDSHIELD AND LEFT HEAT CONTROL PER MM 56-10-2, WINDSHIELD HEAT CHECKED OK.

Part: BATTERIES — DISCHARGED (TAIL COMPT)

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

Part: BATTERY PACK — DISCHARGED (TAILCONE)

DURING LINE CHECK, FOUND EMERGENCY PATH LIGHTS IN TAILCONE INOPERATIVE. REPLACED BATTERY PACK AND POWER SUPPLY, OPERATIONAL CHECK GOOD.

Part: AIR DISTR — SMOKING (CABIN)

DURING POWERBACK, SMOKE ACCUMULATED IN THE CABIN AND THE FORWARD LAVATORY SMOKE DETECTOR ACTIVATED. AIRCRAFT RETURNED TO THE GATE AND THE PASSENGERS WERE UNLOADED. INSPECTED AND OPERATIONALLY CHECKED THE AIRCRAFT SYSTEMS. COULD NOT DUPLICATE THE PROBLEM. OPERATIONAL CHECK GOOD.

Part: BLKHD WEB — CORRODED (FS 1038)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND CORROSION IN THE FS 1038 BULKHEAD WEB, BETWEEN LONGERONS 7L TO 12L. REPAIRED WEB (P/N 9912246-17), PER EA 99-102958.

Part: SKIN — CRACKED (FS 980)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND .5 INCH LONG CRACKS IN THE FUSELAGE SKIN AND A PYLON ATTACH ANGLE AT A COMMON FASTENER HOLE. REPAIRED BOTH PER EA 99-102923.

Part: CORNER — CRACKED (DOOR JAMB)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND A 2.6 INCH CRACK IN THE FORWARD SERVICE DOOR JAMB UPPER FORWARD CORNER. REPAIRED THE JAMB PER EA 99-102680.

Part: FITTINGS — CORRODED (FS 996)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND CORROSION IN BOTH THE LEFT AND RIGHT FS 996 UPPER TO LOWER FRAME ATTACH FITTINGS. REPLACED FITTINGS PER SRM 51-01 AND DWG 5913700.

Part: FITTING — CORRODED (FS 579-598)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND CORROSION IN THE LONGERON 30 END FITTING AT FS 579 TO 598. REPLACED FITTING PER SRM 51-01.

Part: FITTING — CORRODED (FS 604)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND CORROSION IN THE LEFT AND RIGHT KEEL FITTINGS LONGERON 30 AT FS 604. REPLACED FITTINGS (P/N 3924029-1, -2), PER SRM 51-01.

Part: MOUNT — CORRODED (RT ENGINE)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND CORROSION ON THE RIGHT ENGINE AFT MOUNT. REPLACED MOUNT PER MM 71-20-2.

Part: CASTING — CRACKED (RT MLG DOOR)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND 4 INCH CRACK IN THE RIGHT MAIN LANDING GEAR WHEEL WELL DOOR HINGE ATTACH CASTING AT THE LOWER OUTBOARD FLANGE. REPLACED CASTING PER SRM 51-01.

Part: BLKHD FITTING — CRACKED (FS 604)

DURING ACCEPTANCE CHECK AND PRIOR TO SERVICE, FOUND A CRACK IN THE FS 604 BULKHEAD END CAP AT LONGERON 24L. REPLACED FITTING PER SRM 51-01.