N945N

Part: POWER SUPPLY — DISCHARGED (CABIN) · airframe 84,454 hrs · 71,764 cycles

DURING LINE CHECK, MAINTENANCE FOUND THAT THE LEFT SIDE EXTERIOR EMERGENCY FLOOD LIGHT WAS INOPERATIVE. MAINTENANCE REPLACED THE EMERGENCY LIGHT POWER SUPPLY AND OPERATIONALLY CHECKED THE SYSTEM.

Part: BATTERY — MISINSTALLED (CABIN) · airframe 84,250 hrs · 71,605 cycles

DURING LINE CHECK, MAINTENANCE FOUND THAT THE EMERGENCY PATHWAY LIGHTING IN THE GALLEY AND THE EXIT DOOR LIGHT WILL NOT ILLUMINATE. MAINTENANCE INSTALLED THE BATTERIES INTO THE POWER SUPPLY AND THE LIGHTS RETURNED TO AN OPERATIONAL CONDITION.

Part: HOSE — DISCONNECTED (CABIN AIR) · airframe 82,375 hrs · 70,089 cycles

FLT WAS PASSING THROUGH FL 280 WHEN THE RED "CABIN PRESS" LIGHT AND YELLOW "MASTER CAUTION" LIGHT BOTH ILLUMINATED. CREW SAW CABIN PRESSURIZATION WAS AT 10,500 FT AND CLIMBING. COM PROCEDURES WERE APPLIED BUT CABIN PRESSURE WAS NOT CONTROLLABLE. COCKPIT CREW EXECUTED AN EMERGENCY DESCENT TO 10,00 FT. THE MAXIMUM INDICATED ALTITUDE THE CABIN REACHED WAS 12,500 FT BUT THE MASKS DID NOT DEPLOY. THE FLIGHT RETURNED TO A NORMAL LANDING BACK AT MSP. MAINTENANCE FOUND THE LT ACM OUTLET DUCT WAS DISCONNECTED FROM THE HOSE CONNECTION AND THE RT PACK PRECOOLER INLET HOSE WAS NOT COMPLETELY SECURED BY THE CLAMP. THE BOOT AND CLAP WERE REPLACED, LEAK CHECK PERFORMED AND SYSTEM RETURNED TO OPERATIONAL STATUS. (A)

Part: UNKNOWN — MALFUNCTIONED (CABIN PRESSURE)

AS THE AIRCRAFT WAS DESCENDING FROM FL250, CREW NOTICED RED -CABIN PRESS- LIGHT ILLUMINATED. CABIN VERTICAL AIRSPEED WAS CLIMBING IN EXCESS OF 1500 FPM BUT AN IMMEDIATE DESCENT TO 10,000 FT, SMOOTHLY PERFORMED BY F/O; ENABLED CREW TO KEEP CABIN AT NO HIGHER THAN 10,000 FT. COM PROCEDURES AND RED BORDERED EMERGENCY CARD CHECKLIST WERE COMPLIED. THE MASKS IN THE CABIN AREA DID NOT DROP. AS THE FLIGHT DESCENDED THROUGH FL130, THE PRESSURIZATION SYSTEM SEEMED TO SLUGGISHLY AND PARTIALLY START WORKING AGAIN. A NORMAL LANDING WAS MADE WITH NO INCIDENT. MX PERFORMED BITE ON PRESSURE CONTROLLERS AND NO TROUBLE FOUND. COALESCER BAGS WERE CHANGED, PRESSURE SYSTEM LEAKED CHECKED, AIRCRAFT RETURNED TO SERVICE.

Part: ACM — DAMAGED (A/C BAY) · airframe 71,256 hrs · 61,691 cycles

CREW WAS UNABLE TO COOL THE CABIN DOWN WITH AIR CONDITIONING PRIOR TO DEPARTURE. THEN, DURING CLIMBOUT, CABIN DISPLAYED NONSTANDARD CLIMB PROFILE. VERY SLOW CLIMB TO ABOUT 17,000 FEET AND AS MAX DIFFERENTIAL WAS OBTAINED CABIN CONTINUED TO CLIMB AT 1000 FPM. AT FL310, THE CABIN PRESSURE WARNING LIGHT ILLUMINATED. CREW DECLARED AN EMERGENCY AND STARTED A RAPID DESCENT TO 10,000 FEET WHERE THE EMERGENCY WAS CANCELLED. FLIGHT CONTINUED TO A NORMAL LANDING AT MSP. MAINTENANCE REPLACED THE RIGHT AIR CYCLE MACHINE AND THE RIGHT WATER SEPARATOR BAGS. BITE OF THE PRESSURIZATION SYSTEM CHECKED NORMAL AND AIRCRAFT RETURNED TO SERVICE.

Part: PAN — CRACKED · airframe 69,506 hrs · 60,579 cycles

During M-ck in ATL, a crack was found at station 937 between longerons 26R and 27R. The crack was between marked holes "c" and "d" on the doorjamb pan. EA 99-181313

Part: SKIN — DAMAGED (LT & RT PYLON) · airframe 69,506 hrs · 60,579 cycles

DURING AN M-CHECK IN ATL, CORROSION WAS FOUND IN THE LEFT AND RIGHT UPPER BEAVER TAILS, P/N 5923937-501/502. THE BEAVER TAILS WERE REMOVED TO ACCOMPLISH CORROSION REMOVAL. AFTER THE BEAVER TAIL REMOVAL, IT WAS NOTED THAT 11 FASTENER HOLES COMMON TO THE PYLON FRONT SPAR WERE ELONGATED ON EACH SIDE OF THE AIRCRAFT. REPAIR WAS ACCOMPLISHED PER EA 99-181347 ON HOLES NR 78, 79, 81, 82, 84, 85, 88, 90, 91, 92 AND 93 PER LOG PAGE 1644536.

Part: SPAR — CORRODED · corrosion level 2 · airframe 69,506 hrs · 60,579 cycles

During an Mck in ATL, Corrosion was found in the left and right upper beaver tails. The Beaver tails were removed to accomplish corrosion removal. After the beaver tail removal it was noted that 11 fasteners common to the pylon spar were elongated. Repaired per EA 99-181347.

Part: PAN — CRACKED · airframe 69,506 hrs · 60,579 cycles

During Mck in ATL, A crack was found between 2 fasteners in the aft cargo doorjamb pan at sta 937, between longerons 26r and 27r. Material .050" 2024-t42 AL, and .090"2024-t42 AL. Repaired per EA 99-181313.

Part: SKIN — CRACKED · airframe 69,506 hrs · 60,579 cycles

During MCK in ATL, a 1/4" long crack was found in the fuselage skin at staion 1019, between longerons 14L and 15L. The crack emanated from one fastener hole common to the upper attach angle and was removed using 1" diameter cut out. This EA provides instructions to repair the damage. EA 99-181338.

Part: SKIN — CRACKED · airframe 69,506 hrs · 60,579 cycles

During Mck in ATL a .25" crack was found in the fuselage skin at sta 1019, between longerons 14L and 15L. The crack emanated from one fastener hole common to the pylon upper attach angle and was removed using a 1" diameter cut out. Material .032 TI-6AI-4v. Repaired per EA 99-181338.

Part: DOOR FRAME — CRACKED · airframe 69,506 hrs · 60,579 cycles

During an MCK in ATL, a .8" crack was found while accomplishing inspection of the lower aft corner of the forward cargo door doorjamb. This EA. 99-181281 provides repair of area. Material .050" 2014-t6 and .090" 2014-t6.

Part: DOOR FRAME — CRACKED (FUSELAGE) · airframe 69,506 hrs · 60,579 cycles

DURING M-CK IN ATL, A .8 INCH CRACK WAS FOUND IN THE LOWER AFT CORNER OF THE FORWARD CARGO DOOR JAMB. REPAIRED PER EA 99-181281.

Part: DOOR FRAME — CRACKED (FUSELAGE) · airframe 69,506 hrs · 60,579 cycles

DURING M-CK IN ATL, A .8 INCH CRACK WAS FOUND IN THE LOWER AFT CORNER OF THE FORWARD CARGO DOOR JAMB. REPAIRED PER EA 99-181281.

Part: SPAR — DAMAGED (ELEVATOR) · airframe 69,506 hrs · 60,579 cycles

DURING AN M-CHECK SHOP VISIT AT ATL MAINTENANCE BASE WHILE REMOVING THE FRONT SPAR FOR REPLACEMENT, SEVERAL FASTENER HOLES ON THE UPPER AND LOWER SKIN ASSEMBLY WERE FOUND TO BE DAMAGED (TOOLING DAMAGE). REPAIR TO DAMAGED SKIN ASSEMBLY WAS ACCOMPLISHED PER SECTION 1 AND 2 OF EA 99-181293 PG PAGE 1628105.

Part: DOOR FRAME — DAMAGED (FUSELAGE) · airframe 69,506 hrs · 60,579 cycles

DURING M-CHECK AT ATL AND WHILE ACCOMPLISHING A DOORJAMB PAN SPLICE REPAIR PER SRM 53-05, FIG 44, EIGHT .1875 INCH DIA HOLES WERE FOUND WITH SHORT ON-CENTER DISTANCE IN THE VERTICAL FLANGE OF FRAME STA 896 P/N 9958214-29 AS SHOWN IN FIGURE 1. THE FASTENER HOLES ARE FROM A PREVIOUS AFT CARGO DOORJAMB PAN SPLICE REPAIR AT LN27R SHOWN IN FIGURE 1.

Part: FRAME — DAMAGED (FUSELAGE) · airframe 69,506 hrs · 60,579 cycles

DURING AN M1-CHECK IN ATL, STATION 579 FRAME REINFORCEMENT STRAPS 2800206-8 AND -9 WERE CUT FOR ACCESS AT LOCATION BETWEEN L-28 LT AND L-29 RT. ADDITIONAL DAMAGE WAS FOUND AT L-24 RT ON STRAP 2800206-8. THE EA 99-181344 (LOG PAGE 1640709) PROVIDES A SPLICE REPAIR AT TWO LOCATIONS.

Part: SPAR — CORRODED · corrosion level 2 · airframe 69,506 hrs · 60,579 cycles

During Mck in ATL, corrosion was found in the left and right beaver tails. The beaver tails were removed to accomplish corrosion removal. After the beaver tail removal, it was noted that 11 fastener holes common to the pylon front spar were elongated on each side of the aircraft. Repaired per EA 99-181347.

Part: INTERCOSTAL — CRACKED · airframe 69,506 hrs · 60,579 cycles

During M ck in ATL, A crack was found in the outboard end of the 923484-9 intercostal at station 180 at x=-20. Material 7075-t6 AL. Repaired per EA 99-181321.

Part: INTERCOSTAL — CRACKED · airframe 69,506 hrs · 60,579 cycles

During MCK in ATL, a crack was found in the outboard end of intercostal 9923484-9 at sta 180 and at X=-20. Repaired per EA 99-1813231.

Part: RIB — CRACKED · airframe 69,506 hrs · 60,579 cycles

During Mck in ATL, the aft portion of the lower cap of the pylon closing rib was found cracked. The crack is .6" long and extends from a fasterner hole 3.7" forward from the aft end of the cap. Repaired per EA 99-181307.

Part: DOUBLER — CRACKED · airframe 69,506 hrs · 60,579 cycles

During an Mck in ATL the production finger doubler along Longeron 18L was found with a cracked finger sta 850. Material .025" 2014-t6 AL. Repaired per EA 99-181280.

Part: BULKHEAD — GOUGED (FUSELAGE) · airframe 69,506 hrs · 60,579 cycles

DURING AN M-CHECK IN ATL, A GOUGE WAS FOUND IN THE STATION 604 BULKHEAD TEE AT LONGERON 27L. THE GOUGE WAS LOCATED IN THE AFT FACE OF THE WEB FLANGE AND WAS BLENDED OUT TO A MATERIAL THICKNESS OF 0.058 INCH.

Part: BATTERY — DISCHARGED (CABIN) · airframe 66,589 hrs · 58,741 cycles

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

Part: INDICATOR — MALFUNCTIONED (FLAP POSITION)

FLAPS WOULD NOT EXTEND BEYOND 25 DEGREES ON LANDING. FLIGHT CREW DECLARED AN EMERGENCY AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED FLAP POSITION INDICATOR, OPERATIONAL CHECK NORMAL.

Part: BATTERY — DISCHARGED (CABIN)

DURING LINE CHECK, FOUND FIRST CLASS SECTION SEAT MOUNTED EMERGENCY LIGHTS INOPERATIVE. MAINTENANCE REPLACED BATTERIES, OPERATIONAL CHECK NORMAL.

Part: AIR DIST — ODOR (FLIGHT DECK)

DURING CLIMBOUT AT FL29O, BOTH PILOTS AND A FLIGHT ATTENDANT REPORTED AN ELECTRICAL ODOR IN THE FLIGHT DECK. FLIGHT DIVERTED TO DFW AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED ALL WIRING AND COMPONENTS, BOTH FORWARD AND MAIN ELECTRICAL COMPARTMENTS AND OPERATED BOTH ENGINES ON THE GROUND. NO TROUBLE FOUND.

Part: BATTERIES — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND FORWARD OVERWING EMERGENCY EXIT LIGHTS INOPERATIVE. REPLACED BATTERIES, OPERATIONAL CHECK NORMAL.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING LINE CHECK, FOUND OVERWING EMERGENCY EXIT LIGHTS AND SIGNS INOPERATIVE. MAINTENANCE INSTALLED NEW BATTERY PACK, OPERATIONAL CHECK OK.

Part: LIGHTS — MISWIRED (CABIN)

DURING LINE CHECK, FOUND AFT AIRSTAIR SIDEWALL EMERGENCY LIGHTS INOPERATIVE. MAINTENANCE REROUTED WIRING PER WIRING DIAGRAM, OPERATIONAL CHECK OK.

Part: POWER SUPPLY — INOPERATIVE (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND VENTRAL STAIR AND TAIL CONE DOME EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY, OPERATIONAL CHECK NORMAL.

Part: AUG VALVE — MALFUNCTIONED (RIGHT)

TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED AFTER TAKEOFF. FLIGHT RETURNED TO YWG AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RIGHT AUGMENTATION VALVE, OPERATIONAL CHECK NORMAL.

Part: CLAMP — LOOSE (RT AUG VALVE)

TAIL COMPARTMENT TEMPERATURE HIGH LIGHT ILLUMINATED AFTER TAKEOFF. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LARGE AIR LEAK AT RIGHT AUGMENTATION VALVE INBOARD CLAMP. TIGHTENED CLAMP, LEAK AND OPERATIONAL CHECK NORMAL.

Part: POWER SUPPLY — INOPERATIVE (RT NECELLE)

DURING LINE MAINTENANCE INSPECTION, FOUND RIGHT NACELLE EMERGENCY LIGHT INOPERATIVE. REPLACED POWER SUPPLY AND BATTERIES, OPERATIONAL CHECK NORMAL.

Part: FITTING — CRACKED (BS 680)

DURING L-CHECK, FOUND CRACK IN LEFT OUTBOARD SEAT TRACK SUPPORT FITTING FS 680. REPLACED FITTING PER SRM 51-30-5.

Part: PRESS AMPLIFIER — MALFUNCTIONED (E/E COMPT)

LOSS OF CABIN PRESSURIZATION OCCURRED DURING FLIGHT AT 35,000 FEET. CABIN ALTITUDE REACHED 10,000 FEET WITH MASTER WARNING/CABIN PRESSURE ANNUNCIATOR LIGHTS ILLUMINATED. CAPTAIN DECLARED AN EMERGENCY AND SUCCESSFUL DESCENT WAS MADE TO 16,000 FEET. FLIGHT CONTINUED TO DESTINATION AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED CABIN PRESSURE AMPLIFIER. OPERATION CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.

Part: RELAY — MALFUNCTIONED (GEAR WARN LIGHTS)

DURING DESCENT INTO EWR, THE LANDING GEAR WARNING CIRCUIT BREAKER TRIPPED. NO GREEN GEAR DOWNLOCK LIGHTS WERE ILLUMINATED AFTER GEAR WAS EXTENDED FOR LANDING. CREW VISUALLY CONFIRMED GEARS TO BE DOWN AND LOCKED THROUGH PERISCOPES. EMERGENCY EQUIPMENT WAS CALLED OUT ON STANDBY AS A PRECAUTION. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE DISCONNECTED AND RESEATED ALL THREE DOWNLOCK SWITCH CANNON PLUGS AND RESET CIRCUIT BREAKER. LANDING GEAR WARNING LIGHTS DIMMER RELAY WAS ALSO REPLACED. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.

Part: BATTERY PACK — DISCHARGED (CABIN)

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

Part: LIGHT BALLAST — FAILED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND EVIDENCE OF FIRE AT ROW 21DEF AT LOWER SIDEWALL LIGHT AFT BALLAST. DEFERRED LIGHT PER MEL 33-2, AWAITING PARTS FOR REPLACEMENT OF BALLAST ASSEMBLY.

Part: UPLATCH ROLLER — OUT OF ADJUST (LT MLG)

DURING CLIMBOUT, THE LEFT MAIN LANDING GEAR UNSAFE LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. FOUND UPLATCH ROLLER ON LEFT GEAR NOT ENGAGED PROPERLY IN UPLATCH HOOK. RESHIMMED UPLATCH ROLLER FOR PROPER LATCH ENGAGEMENT, OPERATIONAL CHECK OK.

Part: UNSAFE LIGHT — ILLUMINATED (LT MLG)

DURING CLIMBOUT, THE LEFT MAIN LANDING GEAR UNSAFE LIGHT REMAINED ILLUMINATED WITH GEAR RETRACTED. RECYCLED GEAR WITH NO CHANGE. FLIGHT RETURNED TO SMP AND LANDED WITHOUT INCIDENT. REPLACED GEAR UPLIMIT SWITCH, GEAR DOWN LIMIT SWITCH AND GEAR DOOR SWITCH, OPERATIONAL CHECK OK.

Part: POWER SUPPLY — INOPERATIVE (CABIN)

DURING PRE-FLIGHT CHECK, FOUND FORWARD CABIN EMERGENCY LIGHTS INOPERATIVE. REPLACED POWER SUPPLY. ALSO, REPAIRED WIRES THAT WERE FOUND TO BE SHORTED. OPERATIONAL CHECK NORMAL.

Part: LIGHTS — INOPERATIVE (CABIN)

DURING PREFLIGHT CHECK, FOUND FORWARD CABIN FLOOR PROXIMITY EMERGENCY LIGHTS INOPERATIVE. EMERGENCY LIGHTS WERE CHECKED PER MAINTENANCE MANUAL, NO PROBLEMS WERE FOUND.

Part: FITTING — CRACKED (SPOILER)

DURING LINE CHECK, FOUND A CRACK IN THE LEFT INBOARD FLIGHT SPOILER SUPPORT FITTING. REPLACED FITTING.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING LINE CHECK, FOUND BOTH AFT OVERWING EMERGENCY EXIT SIGNS INOPERATIVE. REPLACED BATTERIES, OPERATIONAL CHECK GOOD.

Part: LATCHES — OUT OF ADJUST (TAILCONE)

DURING H-CHECK, FOUND THAT EXCESSIVE FORCE WAS REQUIRED TO DROP THE TAILCONE. ALSO, FOUND THAT THE TAILCONE HUNG UP ON THE LOWER LATCHES. ADJUSTED THE TAILCONE RELEASE SYSTEM AND CHECKED OK.

Part: FRAME — CORRODED (FS 541)

DURING H-CHECK, FOUND CORROSION ON THE FS 541 FLOOR SUPPORT FRAME BETWEEN LONGERON 29L TO 29R. REPAIRED FRAME PER EA 99-97124.

Part: SKIN — CANNED (FS 1076-1087)

DURING H-CHECK, FOUND OIL CANNING IN THE FUSELAGE SKIN FS 1076 TO 1087 BETWEEN LONGERONS 17L TO 18L. REPAIRED SKIN (P/N 5912870-501), PER EA 99-94921.

Part: FITTING — CRACKED (FS 604)

DURING H-CHECK, FOUND CRACKS IN THE WING TO FUSELAGE ATTACH FITTING, RIGHT AND LEFT SIDES FS 604. REPAIRED FITTINGS (P/N 5910465-33, -34), PER EA 99-97123.

Part: BLKHD WEB — CANNED (PYLON)

DURING H-CHECK, FOUND OIL CANNING IN THE PYLON BULKHEAD WEB, LEFT SIDE. REPAIRED PER EA 99-100864.