N15069

Part: ANGLE — CORRODED (BS 1986)

INSPECTION FOUND A CORRODED ANGLE IN AFT CARGO COMPARTMENT AT STA 1986 BETWEEN LONGERON 51L AND 51R. THE ANGLE WAS REMOVED, A NEW ANGLE WAS INSTALLED WITH HI-LOKS IAW SRM 51-33-01.

Part: ACTUATOR — FAILED (PAX DOOR)

INSPECTION FOUND PASSENGER DOOR MID LEFT INOPERATIVE. THE ROTARY ACTUATOR WAS REMOVED AND REPLACED AND OPERATION CHECKED GOOD.

Part: SLIDE — LOW PRESSURE (L2 DOOR)

INSPECTION FOUND THE L-2 DOOR EMERGENCY SLIDE PACK PRESSURE LIGHT ILLUMINATED. THE L-2 DOOR SLIDE WAS REMOVED AND REPLACED.

Part: POWER SUPPLY — INOPERATIVE (CABIN EEL)

THE MID AND FORWARD CABIN EMERGENCY EXIT LIGHTS WOULD NOT TEST DURING A PREFLIGHT CHECK. THE MID POWER SUPPLY AND BATTERY WERE REMOVED AND REPLACED.

Part: BULKHEAD SUPPORT — CORRODED (AFT PRESS BLKHD)

INSPECTION FOUND T-SECTION FLOOR SUPPORT BEAMS ON FORWARD FACE OF AFT PRESSURE BULKHEAD AT LT AND RT SIDES CORRODED. SPLICE REPAIRS WERE PERFORMED IAW SRM 53-00-01 AND 53-40-00, PAGE 93, FIGURE 16.

Part: SUPPORT — CORRODED (BS 2007)

INSPECTION FOUND CABIN FLOOR SUPPORT T-SHAPED ANGLE ON RT SIDE OF REAR PRESSURE BULKHEAD, STA 2007 CORRODED. A REPAIR WAS INSTALLED IAW SRM 53-40-00 PAGE 93, FIGURE 16.

Part: BULKHEAD TEE — CORRODED (AFT PRESS BLKHD)

INSPECTION FOUND T-SECTION FLOOR SUPPORT BEAM ON FORWARD FACE OF REAR PRESSURE BULKHEAD, LT SIDE CORRODED. A SPLICE REPAIR WAS INSTALLED IAW SRM 53-40-00 PAGE 93, FIGURE 16.

Part: TURBINE LINER — FAILED (NR 2 ENGINE)

THE NR 2 MANIFOLD LIGHT AND FIRE WARNING LIGHT ILLUMINATED WHILE EN ROUTE. THE FIRE BOTTLE WAS DISCHARGED AND THE NR 2 ENGINE WAS SHUT DOWN. THE AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. THE NR 2 ENGINE WAS REMOVED AND REPLACED. *S/D* A TURBINE MID FRAME LINER SEGMENT APPROXIMATELY 10 BY 3 IN AREA LIBERATED AND GOT TRAPPED AT LPT STAGE 1 NOZZLE. ONE EACH LPT STAGE 1 BLADE FAILED AT THE PLATFORM IN HIGH CYCLE FATIGUE MODE DUE TO DISTURBANCE IN THE GAS FLOW. MAJOR RESULTANT DAMAGE WAS OBSERVED IN THE LPT ROTOR AREA.

Part: CHANNEL — CORRODED (CARGO COMPT)

KUL - INSPECTION FOUND FORWARD CARGO COMPARTMENT CHANNEL PUNCTURED AND CORRODED. THE CHANNEL WAS REPAIRED IAW ECRA 5340-01268. (X)

Part: CHARGER — INOPERATIVE (CABIN)

FLT NR 51 - EWR - THE EMERGENCY LIGHTS WOULD NOT TEST DURING A PREFLIGHT CHECK. MAINTENANCE FOUND A FAULTY POWER SUPPLY AT MID CABIN. THE EMERGENCY LIGHT CHARGER AND BATTERY WERE REMOVED AND REPLACED AND OPERATION CHECKED GOOD. (M)

Part: VALVE — STUCK (CABIN)

IAH - FLT 0010 - THE AIRCRAFT LOST PRESSURIZATION AT 11,000 FEET AFTER TAKEOFF FROM IAH. THE LOSS OF PRESSURE WAS ACCOMPANIED BY A LOUD BANG AND CREW WAS UNABLE TO CONTROL THE CABIN. FUEL WAS DUMPED AND THE AIRCRAFT WAS RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE CONDITION AIR RELIEF/GROUND CHECK VALVE STUCK OPEN. THE VALVE WAS RESEATED. THE CABIN WAS PRESSURIZED AND ALL CHECKED NORMAL WITH NO LEAKS FOUND. (X)

Part: ENGINE — FAILED (NR 3)

IAH - FLT 0010 - THE NR 3 ENGINE N2 EXCEEDED LIMITS AND BOTH THE NR 1 AND NR 2 ENGINE EGT'S ROSE TO 980 DEGREES ON ROTATION LEAVING IAH. ALL ENGINE THROTTLES WERE RETARDED WITH THE NR 1 AND NR 2 EGT'S DROPPING BELOW RED LINE AND THE NR 3 ENGINE N2 RETURNING TO WITHIN LIMITS. THE AIRCRAFT WAS RETURNED TO IAH WHERE IT LANDED WITHOUT INCIDENT. THE NR 3 ENGINE WAS REMOVED AND REPLACED. BOTH THE NR 1 AND NR 2 ENGINES UNDERWENT A BORESCOPE, A VSV/VBV RIG CHECK, AND POWER ASSURANCE RUN WITH NO FAULTS FOUND. THE SDR WILL REMAIN OPEN FOR PART INFORMATION PENDING INVESTIGATION INTO NR 3 ENGINE FAILURE. SUPPLEMENT - INVESTIGATION DID NOT REVEAL ANY CAUSE FOR THE NR 3 ENGINE N2 OVERSPEED. (X)