N12231

Part: SENSOR — OUT OF ADJUST (LANDING GEAR)

THE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. THE HANDLE WOULD GO TO THE OFF POSITION AND STOP. THE AIRCRAFT WAS RETURNED TO CLE WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE AIR SAFETY SENSOR ACTUATOR OUT OF RIG. THE SENSOR WAS ADJUSTED IAW MM 32-09-200, PAGE 501, OPERATIONAL CHECKS WERE GOOD.

Part: SLIDE — ZERO PRESSURE (R-2 DOOR)

INSPECTION FOUND THE R-2 DOOR ESCAPE SLIDE WITH ZERO PRESSURE. THE SLIDE WAS REMOVED AND REPLACED.

Part: HYD LINE — LEAKING (B-HYD SYST)

THE B HYDRAULIC SYSTEM WAS LOST DURING CRUISE, EN ROUTE TO ATL. THE AIRCRAFT LANDED AT ATL WITHOUT INCIDENT. MAINTENANCE FOUND HYDRAULIC LINE FROM NR 1 ELECTRIC B PUMP TO THE NR 5 PORT ON THE FILTER MODULE LEAKING. THE HYDRAULIC LINE WAS REMOVED AND REPLACED. THE HYDRAULIC SYSTEM WAS SERVICED TO FULL. LEAK AND OPERATIONAL CHECKS WERE GOOD.

Part: HYD LINE — CRACKED (A-HYD SYS)

THE AIRCRAFT LOST A-SYSTEM HYDRAULIC PRESSURE AND QUANTITY DURING CLIMBOUT. THE AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND AN A-SYSTEM HYDRAULIC PRESSURE LINE CRACKED. THE HYDRAULIC LINE WAS REMOVED AND REPLACED. IN ADDITION, THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP WAS REMOVED AND REPLACED. LEAK AND OPERATIONAL CHECKS WERE GOOD.

Part: ACTUATOR — LEAKING (RT FLT SPOILER)

THE A-SYSTEM HYDRAULIC FLUID WAS LOST WHILE ON DESCENT INTO CHS. THE FLUID LOSS WAS ACCOMPANIED BY ILLUMINATION OF THE A-SYSTEM HYDRAULIC PUMP LIGHTS. THE LANDING GEAR WAS LOWERED MANUALLY AND THE FLAPS WERE EXTENDED ELECTRICALLY. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RT INBOARD FLIGHT SPOILER ACTUATOR LEAKING. THE ACTUATOR WAS REMOVED AND REPLACED IAW MM 27-61-51. IN ADDITION, A SPOILER PRESSURE LINE IN RIGHT GEAR WELL WAS FOUND LEAKING. THE LINE WAS REPAIRED AND LEAK CHECK WAS GOOD.

Part: FLOOR BEAM — CRACKED (BS 675-685)

INSPECTION FOUND FLOOR BEAM LOWER CHORD AND TRANSVERSE BEAM CRACKED AT STA 675, BL 0. THE TRANSVERSE BEAM AT STA 685, BL 0 WAS ALSO CRACKED. THE BEAMS WERE REPAIRED IAW ECRA 5710-01740 AND SRM 51-40-4.

Part: SKIN — CRACKED (BS 188-251)

INSPECTION FOUND A 1.75 INCH AND 5.75 INCH CRACK IN RT FUSELAGE SKIN BETWEEN BS 188 AND 251, WL 207 TO 234. THE CRACKED AREA WAS CUT OUT. A FILLER AND DOUBLER WERE FABRICATED AND INSTALLED IAW EA 5310-01188.

Part: SKIN — DISBONDING (WINDOW BELT)

INSPECTION FOUND ONE AREA OF RT WINDOW BELT SKIN DISBONDING. THE WINDOW BELT SKIN WAS REPAIRED IAW SRM 53-30-08.

Part: WEB — CRACKED (BS 358)

INSPECTION FOUND A 1.5 INCH CRACK IN WEB AT STA 358, STRINGER 17L. A REPAIR ANGLE WAS FABRICATED AND INSTALLED IAW 51-40-3, 51-10-2 AND 53-10-2.

Part: SKIN — CRACKED (BS 188-251)

INSPECTION FOUND A .5 INCH CRACK IN LT FUSELAGE SKIN BETWEEN BS 188 AND 251, WL 207 TO 234. THE CRACKED AREA WAS CUT OUT, DOUBLER AND FILLER WERE FABRICATED AND INSTALLED IAW EA 5310-01188.

Part: SKIN — CRACKED (WBL 165)

INSPECTION FOUND A 3 INCH CRACK IN RT WING UPPER SURFACE SKIN AT REAR SPAR, WBL 165, AFT OF INBOARD DRY BAY PANEL. THE CRACKED SECTION WAS CUT OUT AND A DOUBLER WAS FABRICATED AND INSTALLED IAW ECRA 5730-01449.

Part: SKIN — DENTED (BS 1020-1044)

INSPECTION FOUND FUSELAGE SKIN DENTED BETWEEN STA 1020 AND 1044, STRINGER 25R. THE DENTED AREA WERE CUT OUT IAW SRM 53-30-8. A DOUBLER WAS FABRICATED AND INSTALLED IAW SRM 53-30-3 AND 51-30-2.

Part: SKIN — GOUGED (BELOW R1 DOOR)

INSPECTION FOUND A GOUGE IN FUSELAGE SKIN BELOW R-1 DOOR AT STRINGER 18R. THE GOUGED AREA WAS CUT OUT IAW SRM 53-30-3. A DOUBLER AND FILLER REPAIR WAS FABRICATED AND INSTALLED IAW SRM 53-30-3.

Part: CONNECTORS — LOOSE (APU FIRE DET)

FLT NR 1517 - MDW - THE APU FIRE WARNING LIGHT ILLUMINATED AFTER TAKEOFF FROM MDW. THE APU FIRE BOTTLE WAS DISCHARGED, BUT THE LIGHT REMAINED ON. THE AIRCRAFT WAS RETURNED TO MDW WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE APU AREA AND FOUND NO EVIDENCE OF FIRE. THE APU FIRE DETECTION SYSTEM AND APU FIRE EXTINGUISHING SYSTEM WERE PLACARDED INOPERATIVE. LOOSE CONNECTORS WERE FOUND AT SHROUD DISCONNECT. THE CONNECTORS WERE CLEANED AND TIGHTENED. THE DETECTION SYSTEM CHECKED GOOD. IN ADDITION, THE APU FIRE BOTTLE WAS REPLACED. BOTH PLACARDS WERE REMOVED. THE AIRCRAFT HAS COMPLETED OVER 25 FLTS SINCE THIS ANOMALY WAS FIRST REPORTED, WITHOUT A REPEAT OF THE PROBLEM. (M)

Part: HYD LINE — LEAKING (NLG)

FLT NR 1084 - EWR - THE NLG RED UNSAFE LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION. THE GEAR WAS CYCLED AND THE RED LIGHT EXTINGUISHED. MAINTENANCE FOUND THE HYDRAULIC RETURN LINE ON NLG UPLOCK ACTUATOR LEAKING. THE HYDRAULIC LINE WAS REMOVED AND REPLACED AND LEAK CHECK WAS GOOD. THE GEAR WAS SWUNG WITH OPERATION AND INDICATIONS CHECKING GOOD. (M)

Part: DUCT — RUPTURED (NR 2 ENGINE)

FLT NR 1495 - BOS - THE NR 2 ENGINE SURGED ON TAKEOFF ROLL AT V1. THE TAKEOFF WAS CONTINUED AND ENGINE POWER WAS REDUCED TO KEEP EGT BELOW REDLINE. THE NR 2 ENGINE WOULD ONLY DEVELOP ABOUT 50 PERCENT POWER. THE AIRCRAFT WAS RETURNED TO BOS WHERE IT LANDED WITHOUT INCIDENT. MX FOUND THE NR 2 ENGINE 13TH STAGE CROSSOVER DUCT RUPTURED. THE 13TH STAGE DUCT WAS REMOVED AND REPLACED. THE ENGINE WAS RUN AND ALL PARAMETERS WERE WITHTIN LIMITS WITH NO DUCT LEAKS NOTED. (M)

Part: SHEAR BEAM WEB — CRACKED (BS 727)

GSO - INSPECTION FOUND A 1.5 INCH CRACK IN LOWER INBOARD RADIUS OF SHEAR BEAM WEB JUST FORWARD OF STATION 727 AT S18A, LEFT SIDE. THE CRACK WAS STOP DRILLED. A REPAIR WAS INSTALLED IAW BAC DRAWING 65C29228. (M)

Part: BATTERY PACK — INOP (EMER EXITS)

GSO - INSPECTION FOUND THE L-1 AND R-1 EXTERIOR EMEREGNCY EXIT SLIDE LIGHTS INOPERATIVE. THE BATTERY PACK FOR THE L-1 AND R-1 EMERGENCY EXIT SLIDE LIGHTS WAS REMOVED AND REPLACED AND OPERATION CHECKED GOOD. (M)

Part: BULKHEAD — CRACKED (NLG WW)

GSO - INSPECTION FOUND A 4.05 INCH CRACK IN WEB ON LEFT SIDE OF NOSE WHEEL WELL AFT BULKHEAD AT LBL 6.12 AND A 3.25 INCH CRACK ON RIGHT SIDE OF NOSE WHEEL WELL AFT BULKHEAD AT RBL 7.50. THE CRACKS WERE LOCATED AT STATION 294.5. THE CRACKS WERE STOP DRILLED. REPAIR DOUBLERS WERE FABRICATED AND INSTALLED IAW BAC DRAWING 65C35690, EA 5310-02452, AND ECRA 5310-03183. (M)

Part: SKIN — CREASED (BS 350)

GSO - INSPECTION FOUND A CREASE IN SKIN PANEL ON RIGHT SIDE OF FUSELAGE AT STATION 350 AFT OF R-1 DOOR BETWEEN S18R AND S20R. THE DAMAGED AREA WAS CUTOUT. A FILLER AND DOUBLER REPAIR WAS FABRICATED AND INSTALLED IAW SRM 53-30-3 AND 51-30-2. (M)

Part: DOUBLER — CRACKED (FUSELAGE)

GSO - INSPECTION FOUND A 1.25 INCH CRACK IN THIRD LAYER OF FUSELAGE INTERNAL DOUBLER AT AFT GALLEY DOOR FORWARD LOWER CORNER. THE CRACKED AREA WAS CUTOUT. A DOUBLER AND TRIPLER REPAIR WAS FABRICATED AND INSTALLED IAW SRM 53-30-3 AND 51-30-2. (M)

Part: FLOOR BEAM — CRACKED (BS 660)

GSO - INSPECTION FOUND A 1.5 INCH CRACK IN CENTER FLOOR BEAM OF MAIN CABIN AT STATION 660, BL 0. A REPAIR WAS FABRICATED AND INSTALLED IAW BAC DRAWING 65C34537 AND EA 5710-01322. (M)

Part: CHORD — CRACKED (BS 727)

GSO - INSPECTION FOUND A 1 INCH CRACK AT FASTENERS IN LEFT STATION 727 OUTBOARD CHORD, STRINGER 18A. THE CRACKED CHORD SEGMENT WAS REMOVED AND REPLACED IAW EA 5310-01638 AND BAC DRAWING 65C33722. (M)