N786AL

Part: SENSOR — DIRTY (DOOR) · airframe 84,136 hrs · 25,434 cycles

AFTER TAKE OFF FROM LAX, THE LANDING GEAR DOOR NOT LATCHED LIGHT ILLUMINATED FOLLOWING LANDING GEAR RETRACTION. THE FLIGHT CREW CYCLED THE GEAR BUT THE WARNING INDICATION REMAINED THE SAME. THE FLIGHT CONTINUED TO DEN FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE AIRCRAFT WHICH REVEALED DIRT BUILD UP ON THE SENSORS. MAINTENANCE CLEANED THE SENSORS AND PERFORMED SUCESSFUL OPERATIONAL CHECKS. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: LOOP — DEFECTIVE (NR 1 ENGINE)

NSY - FLT 15 - DURING CLIMB-OUT FROM RTA EN ROUTE TO NSY, THE NR 1 ENGINE FIRE WARNING INTERMITTENTLY ILLUMINATED, THEN EXTINGUISHED. THE FLIGHT CONTINUED TO NSY FOR AN UNEVENTFUL LANDING. MAINTENANCE INSPECTED THE ENGINE FIRE WARNING SYSTEM LOCATING A DEFECTIVE FIRE LOOP. MAINTENANCE REPLACED THE LOOP AND PERFORMED A SUCCESSFUL OPERATIONAL TEST. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: LIGHT — FAILED (COCKPIT)

EN ROUTE FROM NGU TO RTA, SMOKE WAS NOTICE EMITTING FROM THE ALTERNATE LONG TRIM LIGHT PANEL WHEN THE CENTER PEDESTAL LIGHTING WAS TURNED ON. THE FLIGHT CREW TURNED THE LIGHTING SYSTEM OFF AND THE FLIGHT CONTINUED TO RTA. A COMPANY REPRESENTATIVE INSPECTED THE LIGHTING SYSTEM AND CENTER PEDESTAL WITH NO DISCREPANCIES NOTED. A SUCCESSFUL OPERATIONAL TEST WAS PERFORMED AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: UPLATCH LIGHT — ILLUMINATED (MAIN GEAR)

EN ROUTE FROM BHA TO NSY, THE MAIN LANDING GEAR NOT LATCH LIGHT ILLUMINATED DURING THE GEAR UPLATCH CKECK. THE FLIGHT CREW CYCLED THE GEAR WITH THE WARNING INDICATION REMAINING THE SAME. THE FLIGHT CONTINUED TO NSY FOR AN UNEVENTFUL LANDING. A COMPANY REPRESENTATIVE INSPECTED THE LANDING GEAR WITH NO DISCREPANCIES NOTED. THE LANDING GEAR UPLATCH CHECK WAS PLACED ON DEFERRAL IN ACCORDANCE WITH COMPANY PROCEDURES. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: INDICATION — MALFUNCTIONED (MLG)

EN ROUTE FROM LERT TO LICZ, THE MAIN LANDING GEAR NOT LATCHED LIGHT ILLUMINATED DURING THE UPLATCH CHECK, THE MAIN GEAR DOORS NOT LATCHED LIGHT REMAINED EXTINGUISHED. THE FLIGHT CREW CYCLED THE LANDING GEAR WITH THE WARNING INDICATION REMAINING THE SAME. THE FLIGHT CONTINUED TO LICZ FOR AN UNEVENTFUL LANDING. A COMPANY REPRESENTATIVE (FLIGHT ENGINEER) INSPECTED THE AIRCRAFT WITH NO DISCREPANCIES NOTED. THE GEAR UPLATCH SYSTEM CHECK ON DEFERRAL IN ACCORDANCE WITH COMPANY PROCEDURES. THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: PLATING — DAMAGED (NR 3 PYLON)

DURING ROUTINE C CHECK INSPECTION, HEAT STRESS WAS DETECTED ON NUMBER THREE PYLON INBOARD AND OUTBOARD PLANK PLATING. REPAIR ACCOMPLISHED REMOVAL OF AFFECTED AREAS, FABRICATION AND INSTALLATION OF NEW PLANK PLATINGS IN ACCORDANCE WITH DOUGLAS DRAWING 5753265 AND ENGINEERING ORDER 54-DC8-896.

Part: MOUNT — CHAFED (NR 3 ENGINE)

DURING ROUTINE C CHECK INSPECTION, CHAFING WAS DETECTED ON NUMBER THREE PYLON FORWARD ENGINE MOUNT. REPAIR BLENDS AFFECTED AREA AND DETERMINES THAT THE WEAR IS ACCEPTABLE FOR STRENGTH IN ACCORDANCE WITH DOUGLAS FAX ACTION NUMBER 374208 AND ENGINEERING ORDER 71-DC8-891.

Part: DOUBLER — CORRODED (LT MLG WW)

DURING ROUTINE C CHECK INSPECTION, CORROSION WAS DETECTED ON LEFT MAIN LANDING GEAR LOWER SUPPORT DOUBLER. REPAIR ACCOMPLISHED CORROSION REMOVAL IN ACCORDANCE WITH DOUGLAS FAX ACTION NUMBER 368547 AND 368589 AND ENGINEERING ORDER 57-DC8-904.

Part: PANEL — CORRODED (VERT STAB)

DURING ROUTINE C CHECK INSPECTION, CORROSION WAS DETECTED ON LEFT VERTICAL STABILIZER PANEL BETWEEN STATIONS ZR 253 AND ZR 297. REPAIR ACCOMPLISHED REMOVAL OF DAMAGED AREA, FABRICATION AND INSTALLATION OF A NEW PANEL IN ACCORDANCE WITH FAA DER APPROVED DRAWING E68-R01 AND ENGINEERING ORDER 55-DC8-892.

Part: PANEL — CORRODED (VERT STAB)

DURING ROUTINE C CHECK INSPECTION, CORROSION WAS DETECTED ON RIGHT VERTICAL STABILIZER EXTERNAL PANEL BETWEEN STATIONS ZR 253 AND ZV 297. REPAIR ACCOMPLISHED REMOVAL OF AFFECTED AREA, FABRICATION AND INSTALLATION OF A NEW PANEL IN ACCORDANCE WITH FAA DER APPROVED DRAWING E69-R02 AND ENGINEERING ORDER 55-DC8-893.

Part: UPLATCH — FAILED (LT MLG)

EN ROUTE FROM WRI-MDT, THE GEAR UPLATCH CHECK FAILED WITH THE GEAR NOT LATCHED LIGHT ILLUMINATED. AFTER AN UNEVENTFUL LANDING, MAINTENANCE DETERMINED THE LEFT MAIN GEAR UPLATCH TO BE WORN AND AT FAULT. THE LEFT UPLATCH ASSEMBLY WAS REMOVED, REPLACED, AND OPERATIONALLY CHECKED IAW DOUGLAS MM 32-30-0 AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: SWITCH — FAILED (RIGHT MLG)

ON TAKEOFF OUT OF KRDL, GEAR NOT LATCH LIGHT CAME ON. GEAR CYCLED WITH NO CHANGE. AT TJSJ MAINTENANCE INSPECTED AIRCRAFT AND FOUND RIGHT GEAR UPLATCH TO BE BAD. SWITCH WAS REPLACED AND SYSTEM CHECKS NORMAL. (M)

Part: WIRING HARNESS — BROKEN (CARGO DOOR)

EN ROUTE MIA TO SJU, CARGO DOOR WARNING LIGHT ILLUMINATED ON DESCENT INTO SJU. FOLLOWING AN UNEVENTFUL LANDING, MX REPAIRED THE WIRING HARNESS OF THE CARGO DOOR WARNING SYSTEM AND RETURNED THE AIRCRAFT TO SERVICE. (M)

Part: LINK ASSY — OUT OF ADJUST (NLG DOORS)

ON CLIMB-OUT OF ATL, WITH LANDING GEAR RETRACTED AND ALL INDICATIONS NORMAL, NOSE GEAR DOOR VIBRATION WAS EXPERIENCED AT 250 KNOTS. THE AIRCRAFT WAS SLOWED TO 230 KTS, THE GEAR WAS CYCLED, AND AN UPLATCH CHECK WAS PERFORMED. ALL INDICATIONS WERE NORMAL, BUT DOOR BUFFETING CONTINUED. THE FLIGHT PROCEEDED TO TOL AT 230 KNOTS WITH THE GEAR EXTENDED. EN ROUTE, DOOR BUFFETING CEASED. ALL NOSE GEAR DOORS WERE CLOSED ON ARRIVAL AT TOL. MAINTENANCE INSPECTED AND RIG-CHECKED THE NLG DOORS AND DOOR LINKS, ADDING SPACERS TO THE RT FORWARD LINK. THE NOSE GEAR WAS OPS CHECKED IAW THE DC-8 MM 32-22-1, AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)

Part: FUEL PUMP — LOW OUTPUT (NR 2 ENGINE)

HUF - DURING DESCENT AT AROUND 10,000 FEET, NR 3 ENGINE FLAMED OUT. ENGINE SHUT-DOWN PROCEDURES WERE ACCOMPLISHED. ON THE GROUND IN HUF, DETERMINED THE ENGINE WOULD LIGHT OFF, BUT HANG AT AROUND 40 PERCENT N2 RPM. TROUBLESHOOTING INDICATED THE OUTPUT OF THE ENGINE DRIVEN FUEL PUMP WAS INSUFFICIENT. THE ENGINE DRIVEN FUEL PUMP WAS REPLACED, AND ENGINE OPERATION RETURNED TO NORMAL. THE AIRCRAFT WAS RETURNED TO SERVICE. (X)

Part: BEARING — DAMAGED (NR 3 ENGINE)

EINN/DTW - IN CRUISE BETWEEN EINN AND DTW, THE NR 3 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATED WITH NORMAL PRESSURE, BUT OIL TEMP CLIMBED SOMEWHAT ABOVE THE NORMAL RANGE. WHEN THE THROTTLE WAS RETARDED, THE BYPASS LIGHT REMAINED ON, ENGINE WAS PRECAUTIONARILY SHUT DOWN. INSPECTION OF THE ENGINE ON THE GROUND IN DTW REVEALED BEARING-TYPE METAL IN THE SCREEN. SHOP TEAR DOWN OF THE ENGINE CONFIRMED NR 4 BEARING DETAIL 2 WAS DAMAGED AND THAT ITS CAGE HAD FAILED. (X)

Part: WIRE — BROKEN (CARGO DOOR)

PIA - ON DEPARTURE, THE MAIN CARGO DOOR WARNING LIGHT ILLUMINATED. THE AIRCRAFT RETURNED TO PIA FOR MAINTENANCE. INSPECTION OF THE DOOR ON THE GROUND SHOWED IT TO BE PROPERLY LOCKED. A WIRE WAS REPAIRED IN THE WARNING LIGHT CIRCUIT. THE AIRCRAFT RETURNED TO SERVICE. (X)