N712RC

Part: SKIN — CRACKED (LT TE MIDFLAP)

DURING LINE CHECK, FOUND CRACK IN THE LEFT WING INBOARD MIDFLAP AT WBL 183.8. REPAIRED PER EA 27-150342.

Part: BATTERY PACK — DISCHARGED (CABIN)

DURING PREFLIGHT, FOUND ESCAPE PATH LIGHTS INOPERATIVE BETWEEN ROW 7 AND 16. REPLACED BATTERY PACK, OPERATIONAL CHECK OK.

Part: ACTUATOR — FAILED (NR 3 LE FLAP)

DURING CRUISE FLIGHT, AIRCRAFT LOST A-SYSTEM HYDRAULIC PRESSURE AND QUANTITY. BOTH ENGINE DRIVEN PUMPS RAN DRY. AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED NR 3 LEADING EDGE KRUEGER FLAP ACTUATOR AND BOTH ENGINE DRIVEN HYDRAULIC PUMPS. PERFORMED CHECK OF THE LEADING EDGE FLAP, SLATS AND ENGINE DRIVEN PUMPS, OPERATIONAL CHECK OK.

Part: APU — SMOKING (CABIN)

DURING TAXI OUT, SMOKE BEGAN TO ENTER AIRCRAFT CABIN. AIRCRAFT RETURNED TO THE GATE AND PASSENGERS DEPLANED THROUGH THE JET WAY. MAINTENANCE FOUND APU TO BE THE SOURCE OF SMOKE, RESIDUAL DE-ICE FLUID SUSPECTED. APU MEL'D.

Part: OIL PRESS IND — MALFUNCTIONED (NR 2 ENGINE)

DURING CLIMB, THE NR 2 ENGINE OIL PRESSURE INDICATION BEGAN DECREASING. CREW RETARDED NR 2 ENGINE POWER TO IDLE. PRESSURE STABILIZED AT 36 PSI. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR 2 ENGINE OIL PRESSURE INDICATOR AND INSPECTED GROUND WIRES FOR SECURITY. ENGINE OPERATIONAL CHECK OK. PARAMETERS WERE NORMAL AND AIRCRAFT RETURNED TO SERVICE.

Part: LONGERON — CORRODED (FS 950)

DURING H-CHECK, FOUND CORROSION ON STR 29R AT BS 950B PLUS 7 TO 12 AND AT BS 950E. REPAIRED STRINGER (P/N 65-56441-4) PER EA 27-104219.

Part: CHORD — CRACKED (FS 335)

DURING H-CHECK, FOUND A CRACK IN THE NOSE LANDING GEAR WHEEL WELL RIGHT SIDE PANEL CHORD AT BS 335, RBL 17. REPAIRED CHORD (P/N 65-19861-6) PER EA 27-104221.

Part: LONGERON — CORRODED (FS 690)

DURING H-CHECK, FOUND CORROSION ON STR 28R AT BS 690. REPAIRED STRINGER (P/N 65-56236-22) PER EA 27-104217.

Part: INTERCOSTAL — CORRODED (FS 740)

DURING H-CHECK, FOUND CORROSION ON THE FS 740 KEEL BEAM INTERCOSTAL FROM LBL 6 TO RBL 6. REPAIRED INTERCOSTAL (P/N 69-47111-2) PER EA 27-104209.

Part: FLOOR BEAM — CORRODED (FS 1130)

DURING H-CHECK, FOUND CORROSION ON THE BS 1130 FLOOR BEAM UPPER CHORD AT LBL 16, 42 AND 48. REPAIRED CHORD (P/N 65-20822-3) PER EA 27-79525.

Part: FLOOR BEAM — CRACKED (FS 312)

DURING H-CHECK, FOUND CORROSION ON THE BS 312 FLOOR BEAM UPPER CHORD AT THE A/C CENTER LINE. REPAIRED CHORD (P/N 65-16314) PER EA 27-104215.

Part: FLAP — LOOSE (RT OUTBD TE)

EN ROUTE AT 25,000 FEET AND 310 KNOTS, RIGHT OUTBOARD FLAP BEGAN TO VIBRATE VIGOROUSLY. CREW SLOWED AIRCRAFT AND PERFORMED A FLIGHT CONTROL CHECK. AIRCRAFT BANKED QUICKER TO THE RIGHT AND SLOWER TO THE LEFT. CONTINUED TO DTW, DECLARED AN EMERGENCY AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND RIGHT OUTBOARD AFT FLAP LOOSE AND ADJUSTED FLAP ECCENTRICS.

Part: EPR INDICATOR — MALFUNCTIONED (NR 3 ENGINE)

NR 3 EPR INDICATION WAS ABNORMALLY LOW ON TAKEOFF ROLL. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. THE NR 3 EPR SYSTEM WAS PLACED ON MEL AND THE FLIGHT CONTINUED AS SCHEDULED. MAINTENANCE SUBSEQUENTLY REPLACED THE EPR INDICATOR AND TRANSMITTER WITH SERVICEABLE UNITS.

Part: GUIDE ARM — OUT OF ADJUST (CABIN DOOR)

DTW-YUL - DURING CLIMB, AT APPROXIMATELY 5,000 TO 6,000 FEET, THE CREW HEARD A POP SOUND FROM THE MAIN CABIN DOOR AND THE AIRCRAFT WOULD NOT PRESSURIZE. RETURNED TO DTW AND LANDED WITHOUT FURTHER INCIDENT. RERIGGED THE DOOR GUIDE ARM AND OPERATIONAL CHECK OK.

Part: INDICATION — MALFUNCTIONED (NLG)

DURING CLIMB AFTER GEAR RETRACTION, NOSE LANDING GEAR DOOR INDICATIONS REMAINED ILLUMINATED WITH GEAR HANDLE IN UP POSITION. WHEN GEAR HANDLE IN OFF POSITION, TAILSKID INDICATION ILLUMINATED AS WELL. RECYCLED LANDING GEAR TO NO AVAIL AND FLIGHT CONTINUED WITHOUT FURTHER INCIDENT. MAINTENANCE DEFERRED NOSE LANDING GEAR AND TAILSKID INDICATION.

Part: INDICATION SW — MALFUNCTIONED (NLG)

DURING CLIMB AFTER LANDING GEAR RETRACTION, NOSE LANDING GEAR DOOR INDICATIONS REMAINED ILLUMINATED. ASSOCIATED WIND NOISE WITH INDICATION AND RECYCLED LANDING GEAR TO NO AVAIL. FLIGHT CONTINUED TO DTW AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED NOSE LANDING GEAR DOORS AND INDICATION WIRING, NO TROUBLE FOUND. REPLACED BOTH NOSE LANDING GEAR DOOR INDICATION SWITCHES, OPERATIONAL CHECK NORMAL.

Part: RETRACT MECH — OUT OF ADJUST (NLG DOORS)

DURING DEPARTURE CLIMB UPON GEAR RETRACTION, NOSE LANDING GEAR DOOR INDICATION REMAINED ILLUMINATED. RECYCLED GEAR TO NO AVAIL, FLIGHT DIVERTED TO MSP WITHOUT FURTHER INCIDENT. MAINTENANCE NOTED LEFT NOSE GEAR DOOR NOT FAIRED. RIGGED NOSE LANDING GEAR DOORS AND PERFORMED GEAR SWING, NO DISCREPANCIES NOTED.

Part: SKIN — DELAMINATED (LT TE FLAP)

DURING LINE CHECK, FOUND 4 DELAMINATION IN THE LEFT INBOARD TRAILING EDGE FLAP. REPAIRED PER SRM 51-40-6.

Part: SWITCH — LACK OF LUBE (TAIL SKID)

DURING CLIMB UPON GEAR RETRACTION, TAIL SKID INDICATION REMAINED ILLUMINATED. RECYCLED GEAR TO NO AVAIL. FLIGHT CONTINUED WITHOUT FURTHER INCIDENT. MAINTENANCE CLEANED AND LUBED TAIL SKID INDICATION SWITCH. OPERATIONAL CHECK NORMAL.

Part: TRUNNION — CRACKED (RT MLG)

ON LANDING ROLL OUT, AIRCRAFT EXPERIENCED A RIGHT MAIN LANDING GEAR AFT TRUNNION FAILURE. DEPLANED PASSENGERS UTILIZING PORTABLE STAIRS AND TOWED AIRCRAFT OFF RUNWAY. MAINTENANCE FOUND AFT TRUNNION JOURNAL CRACKED AT THE MAIN LANDING GEAR BEAM. ITEM UNDER REPAIR.

Part: DOOR — NOT LATCHED (CABIN)

DURING TAKEOFF TPA-MSP, NOTICED MAIN CABIN DOOR AIR LEAK WITH NO CORRESPONDING DOOR WARNING INDICATION. DUMPED 25,000 LBS OF FUEL AND RETURNED TO TPA WITHOUT FURTHER INCIDENT. INSPECTED DOOR AND FRAME ASSEMBLY. NO TROUBLE FOUND, OPERATIONAL CHECK OK.

Part: INDICATION — MALFUNCTIONED (RT MLG DOOR)

DURING DEPARTURE CLIMB UPON PLACING GEAR HANDLE IN 'OFF' POSITION, RIGHT MAIN LANDING GEAR DOOR WARNING INDICATION ILLUMINATED. RECYCLED GEAR HANDLE TO 'UP' AND THEN 'OFF' POSITION TO NO AVAIL. RECYCLED LANDING GEAR WITH PROPER INDICATIONS. MAINTENANCE COULD NOT DUPLICATE MALFUNCTION.

Part: ERP CONNECTOR — LOOSE (NR 3 ENGINE)

NR 3 EPR INDICATION WAS LIMITED TO 1.4 ON TAKEOFF. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REPAIRED A LOSE CONNECTOR FOUND ON THE E-6 CARD FILE IN THE E AND E COMPARTMENT. SUBSEQUENT OPERATIONAL CHECKS WERE SATISFACTORY.