N13234

Part: HYD LINE — LEAKING (NLG ACTUATOR)

THE NOSE LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF FROM RDU. ALL GEAR WERE LOWERED AND VERIFIED DOWN. THE AIRCRAFT WAS RETURNED TO RDU WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE NOSE GEAR LOCK ACTUATOR HYDRAULIC FLEX LINE LEAKING. THE LINE WAS REPLACED USING AN INTERIM FLEX LINE. A DIP WAS ISSUED TO REPLACE THE FLEX LINE WITHIN 500 FLIGHTS OR 1200 FLIGHT HOURS.

Part: HYD PUMP — LEAKING (NR 2 ENGINE)

FLT NR 1160 - EWR - THE AIRCRAFT LOST ALL PRESSURE AND FLUID FROM THE 'A' HYDRAULIC SYSTEM DURING FINAL APPROACH TO EWR. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE NR 2 ENGINE DRIVE HYDRAULIC PUMP AT FAULT. THE NR 2 HYDRAULIC PUMP WAS REMOVED AND REPLACED. HYDRAULIC PUMP OPERATION CHECKED GOOD. (M)

Part: HARNESS — CHAFED (NR 2 ENGINE)

FLT NR 1588 - EWR - THE NR 2 ENGINE OVERHEAT LIGHT ILLUMINATED ON APPROACH TO EWR. THE NR 2 ENGINE WAS SHUT DOWN AND BOTH LEFT AND RIGHT FIRE BOTTLES WERE DISCHARGED. THE LIGHT REMAINED ILLUMINATED FOR APPROXIMATELY ANOTHER EIGHT MINUTES AND THEN EXTINGUISHED. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NO EVIDENCE OF FIRE. THE NR 2 ENGINE OVERHEAT WIRE HARNESS WAS FOUND CHAFED AT THE FUEL HEAT VALVE. THE WIRE HARNESS WAS REPAIRED AND SECURED. IN ADDITION, BOTH FIRE BOTTLES WERE REMOVED AND REPLACED. (M)

Part: BLKHD CHORD — CRACKED (BS 727)

GSO - INSPECTION FOUND A 1.5 INCH CRACK IN BS 727 BULKHEAD RIGHT OUTBOARD CHORD AT STRINGER 18A. THE RIGHT OUTBOARD CHORD WAS REMOVED AND REPLACED IAW EA 5310-01638. (M)

Part: FRAME — CRACKED (BS 664)

INSPECTION FOUND A 3 INCH CRACK IN FUSELAGE FRAME AT RIGHT BS 664, WL 191.5, STRINGER 18A SHEAR BEAM. THE AREA WAS REPAIRED IAW ECRA 5310-03156 AND IAW BAC SERVICE BULLETIN 737-53-1082, REV 3, FIG 1. (M)

Part: STRINGER — CORRODED (BS 1006)

GSO - INSPECTION FOUND CORROSION ON FORWARD LOWER AND UPPER AFT END OF STRINGER 26R AT STATION 1006. THE STRINGER WAS REMOVED AND A NEW STRINGER AND SPLICE WERE INSTALLED IAW SRM 53-10-3, FIGURE 1. (M)

Part: BEAM — CORRODED (BS 251.6)

GSO - INSPECTION FOUND THE RIGHT NOSE WHEEL WELL STATION 251.6 VERTICAL SUPPORT BEAM AND ATTACHING WEB CORRODED. THE RIGHT VERTICAL BEAM WAS REMOVED AND REPLACED IAW SRM 51-30-2. THE CORRODED ANGLES AND FRAME WEB WERE REPAIRED IAW SRM 51-40-1 AND 51-40-2. (M)

Part: WEB — CRACKED (NLG WW)

GSO - INSPECTION FOUND A 1 INCH CRACK IN NOSE WHEELWELL UPPER WEB AT THE INBOARD AFT CORNER ON LT SIDE AND CORROSION FOUND AT THE INBOARD FORWARD CORNER ON LT SIDE. THE WEB AREA WAS REPAIRED IAW EA 5310-02452 AND BAC DRAWING 65C35749. (X)

Part: BLKHD CHORD — CRACKED (BS 727)

GSO - INSPECTION FOUND A 1.5 INCH CRACK IN BS 727 BULKHEAD LEFT OUTBOARD CHORD AT STRINGER 18A. THE CHORD WAS REMOVED AND REPLACED IAW EA 5310-01638, OPERATION NR 2. (M)

Part: BATTERY — FAILED (BATT COMPT)

GSO - FLT 1551 - A FAINT ELECTRICAL SMELL WAS OBSERVED IN THE COCKPIT AND CABIN DURING TAXI IN AT GSO. THE AIR STARTED TO CLEAR AFTER THE PACKS AND BLEEDS WERE TURNED OFF. MAINTNANCE FOUND THE ACFT BATTERY BURNED. THE BATTERY WAS REMOVED AND REPLACED. THE BATTERY CHARGER WAS REPLACED AS A PRECAUTIONARY MEASURE. THE CHARGING SYSTEM WAS CHECKED AND NO DISCREPANCIES WERE FOUND. SUPPLEMENT - THE SDR STATUS HAS BEEN CHANGED TO OPEN PENDING RESULTS OF SHOP REPORT ON BATTERY. SUPPLEMENT - INVESTIGATION REVEALED THE BATTERY HAD EXPERIENCED THERMAL RUNAWAY. THE VENDOR EXAMINED THE CHARGER AND FOUND NO FAULTS THAT COULD HAVE CONTRIBUTED TO BATTERY FAILURE. (X)

Part: BATTERY — FAILED (E/E COMPT)

GSO - FLT 1551 - A FAINT ELECTRICAL SMELL WAS OBSERVED IN THE COCKPIT AND CABIN DURING TAXI IN AT GSO. THE AIR STARTED TO CLEAR AFTER THE PACKS AND BLEEDS WERE TURNED OFF. MAINTENANCE FOUND ACFT BATTERY BURNED. THE BATTERY WAS REMOVED AND REPLACED. THE BATTERY CHARGER WAS REPLACED AS A PRECAUTIONARY MEASURE. CHARGING SYS CHECKED AND NO DISCREPANCIES FOUND. SDR WILL REMAIN OPEN PENDING SHOP FINDINGS ON BATTERY CHARGER. SUPPLEMENT - INVESTIGATION REVEALED THE BATTERY HAD EXPERIENCED THERMAL RUNAWAY. THE VENDOR EXAMINED THE CHARGER AND FOUND NO FAULTS THAT COULD HAVE CONTRIBUTED TO BATTERY FAILURE. (X)

Part: LINE — RUPTURED (LT REAR SPAR)

MCO - FLT 1594 - THE A-SYSTEM HYDRAULIC FLUID QUANTITY WAS LOST IN-FLIGHT. THE LANDING GEAR AND FLAPS WERE EXTENDED MANUALLY AND THE AIRCRAFT WAS DIVERTED TO MCO WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND A RUPTURED HYDRAULIC LINE AT THE LT REAR SPAR. THE HYDRAULIC LINE WAS REMOVED AND REPLACED. THE A-HYDRAULIC SYSTEM WAS PRESSURIZED AFTER SERVICING AND NO LEAKS WERE NOTED. (X)