N291SC

Part: BATTERY PACK — INOPERATIVE (CABIN) · airframe 45,614 hrs · 20,119 cycles

DURING A MAINTENANCE LINE CHECK, THE AFT AIRSTAIR EMERGENCY LIGHT WAS FOUND INOPERATIVE. REMOVED AND REPLACED THE EMERGENCY EXIT LIGHT BATTERIES.

Part: BATTERY PACK — INOPERATIVE (CABIN) · airframe 45,223 hrs · 19,945 cycles

DURING A MAINTENANCE LINE CHECK, THE EMERGENCY LIGHTS AT L2 AND R2 DOORS. REMOVED AND REPLACED THE POWER SUPPLY/BATTERY PACK. OPERATIONALLY CHECKS GOOD.

Part: HYDRAULIC LINE — LEAKING (LT ELEVATOR) · airframe 45,039 hrs · 19,863 cycles

AFTER TAKEOFF FROM MSP, THE AIRCRAFT LOST A SYSTEM HYDRAULICS. DECLARED AN EMERGENCY AND RETURNED TO POINT OF ORIGIN. THE HYDRAULIC FLEX LINE ON THE LEFT ELEVATOR POWER CONTROL UNIT WAS FOUND LEAKING. THE FLEX LINE WAS REMOVED AND REPLACED, ALL FLIGHT CONTROL SYSTEMS WERE OPERATIONALLY CHECKED THROUGH SEVERAL TIMES AND CHECKED GOOD.

Part: LIGHT — INOPERATIVE (ROWS 20 - 25) · airframe 44,969 hrs · 19,831 cycles

DURING A MAINTENANCE LINE CHECK, THE EMERGENCY PATH LIGHTING WAS FOUND INOPERATIVE AT SEAT ROWS 20 - 25. THE WIRING WAS REPAIRED FOR THE EMERGENCY PATH LIGHTING. OPERATIONALLY CHECKS GOOD.

Part: LIGHT — BROKEN (CABIN) · airframe 44,751 hrs · 19,737 cycles

THE SECOND RED LENS ON THE RIGHT FORWARD EMERGENCY EXIT STRIP WAS FOUND BROKEN WHEN TESTED. THE BULB DOES NOT ILLUMINATE. REMOVED AND REPLACED ASSOCIATED LAMP HOLDER, ALL EMERGENCY LIGHTS CHECK GOOD.

Part: WARNING SYSTEM — INOPERATIVE (MLG WW) · airframe 44,679 hrs · 19,703 cycles

DURING A MAINTENANCE LINE CHECK, THE APU FIRE WARNING HORN IN THE WHEEL WELL WAS FOUND INOPERATIVE. REMOVED AND REPLACED THE APU FIRE WARNING HORN AND OPERATIONALLY CHECKED GOOD.

Part: VALVE — LEAKING (PARKING BRAKE)

WHILE THE AIRCRAFT WAS PARKED AT THE GATE SMOKE WAS NOTICED IN THE CABIN. MAINTENANCE FOUND THE PARKING BRAKE VALVE LEAKING. REMOVED AND REPLACED PARK BRAKE VALVE PER MM 324421. OPERATIONALLY AND LEAK CHECKS GOOD.

Part: LIGHT — INOP (R1 DOOR)

DURING A LINE MAINTENANCE CHECK, THE R1 DOOR INTERIOR EMERGENCY EXIT SIGN OVER THE DOOR OPENING WOULD NOT ILLUMINATE WHEN TESTED. REMOVED AND REPLACED THE R1 DOOR INTERIOR EMERGENCY EXIT LIGHT ASSEMBLY. OPERATIONALLY CHECKS GOOD.

Part: FIRE WARN HORN — INOP (NLG WW APU)

DURING A LINE MAINTENANCE CHECK, THE APU NOSE WHEEL WELL FIRE WARNING HORN WAS FOUND INOPERATIVE. REMOVED AND REPLACED THE NOSE WHEEL WELL APU FIRE WARNING HORN. OPERATIONALLY CHECKS GOOD.

Part: LIGHT — INOPERATIVE (LT EMER EXIT)

DURING A LINE MAINTENANCE CHECK, THE AFT LEFT OVERWING INTERIOR EMERGENCY EXIT LIGHT ASSEMBLY WAS FOUND INOPERATIVE. A WIRE WAS FOUND DISCONNECTED BEHIND THE INTERIOR DECORATIVE PANEL. THE WIRES WERE RESECURED AND SYSTEM OPERATIONALLY CHECKS GOOD.

Part: BULB — FAILED (ROW 5)

DURING HEAVY MAINTENANCE CHECK, THE AISLE EMERGENCY EXIT LIGHT WAS FOUND INOPERATIVE AT ROW 5. RELAMPED AISLE EMERGENCY EXIT LIGHT IAW B727 MM 335001.

Part: BATTERY — DISCHARGED (L2 DOOR)

DURING HEAVY MAINTENANCE CHECK, THE L2 DOOR EMERGENCY LIGHT FLICKERS. AFTER BATTERIES CHARGED OPERATIONS CHECK GOOD IAW B727 MM 335001.

Part: BATTERY — DISCHARGED (ROW 5)

DURING HEAVY MAINTENANCE CHECK, THE OVERHEAD EMERGENCY EXIT LIGHT LOCATED AT ROW 5 FLICKERS. BATTERIES LOW, AFTER CHARGING OPERATIONS CHECK GOOD IAW B727 335001.