N755TA

ATA 2120

Part: UNKNOWN — ODOR (CABIN) · airframe 5,617 hrs · 4,762 cycles

AC DIVERTED ON REPOSITION LEG FOR OILY ODOR IN CABIN WHEN TEMPERATURE WAS TURNED TO HOT. WITH TEMPERATURE TURNED DOWN, THE ODOR DISAPPEARED. MAINT RAN THE AC WITH TEMPERATURE IN FULL HOT AND FULL COLD. NO OILY ODOR WAS NOTICED. CABIN AIR OUTLETS WERE CHECKED FOR BLOCKAGE. TEMPERATURE SENSOR WAS CHECKED FOR PROPER OPERATION. THE DISCREPANCY COULD NOT BE DUPLICATED.

ATA 2120

Part: UNKNOWN — SMOKE (CABIN) · airframe 5,614 hrs · 4,759 cycles

REPORTED EXTREME HEAT COMING INTO AIRCRAFT ACCOMPANIED BY A BLUE HAZY TYPE SMOKE AND BURNING ODOR IN CABIN. AIR CONDITIONING SYSTEM WAS PREVIOUSLY MEL'D. MAINT FOUND THE AIR CYCLE MACHINE CIRCUIT BREAKER PULLED AND COLLARED. THE CIRCUIT BREAKER WAS RESET. THE BLEED AIR SYSTEM WAS TESTED AND THE SYSTEM FUNCTIONED NORMALLY.

ATA 2163

Part: SENSOR — FAILED (CABIN TEMP) · airframe 5,029 hrs · 4,241 cycles

TRIP NR 1180704 AT FL 070 IN LEVEL FLIGHT DURING INITIAL CLIMB OUT CREW REPORT A BURNING ODOR COMING FROM THE OVERHEAD VENTS. FLOOR VENTS WERE EMINATING HOT AIR WITH SYSTEM IN MANUAL MODE SET TO FULL COLD. CABIN PRESSURE WAS FLUCTUATING +- 500 FT. CREW RETURNED TO KPBI. MAINTENANCE REPLACED THE TEMP SENSOR.

ATA 5511

Part: RIB — CRACKED (HORIZ STAB) · airframe 4,896 hrs · 4,125 cycles

DURING A SCHEDULED MAINTENANCE VISIT WHILE PERFORMING A HORIZONTAL STABILIZER ROLLER INSPECTION THE RT IB HORIZONTAL STABILIZER, THE RT RIB WAS FOUND CRACKED. DETAILED INSPECTION INSTRUCTIONS OF THIS AREA ARE OUTLINED IN MFG COMMUNIQUE' NR 70. MAINTENANCE REPLACED THE RIB ASSEMBLY.

ATA 7320

Part: HMU — MALFUNCTIONED (LT ENGINE)

TRIP NR 1136187, CREW REPORTED WHILE CLIMBING THROUGH FL260 THEY NOTICED A YAW OF THE AIRCRAFT AND DISCOVERED THE LT ENGINE HAD ROLLED BACK TO 62 PERCENT N1. THEY TURNED THE ENGINE ANTI-ICE ON AND TURNED THE EEC OFF AND PUSHED THROTTLES FORWARD WITH NO IMPROVEMENT IN PERFORMANCE. ALL OTHER ENGINE INDICATIONS WERE CONSISTENT WITH 62 PERCENT N1. AIRCRAFT DIVERTED. MAINTENANCE WAS ABLE TO DUPLICATE THE DISCREPANCY ON ENGINE RUNS THEY WERE UNABLE TO EXCEED 57 PERCENT N1. MAINTENANCE REPLACED THE NR 1 HMU.

ATA 7830

Part: SWITCH — SHORTED (LT ENGINE) · airframe 4,229 hrs · 3,506 cycles

DURING CLIMB AT 15K FT, RUMBLING SOUND HEARD AND LT ENG N1 IND 84.8% WITH A SPLIT IN ENG THROTTLES. LT THROTTLE COULD NOT BE PUSHED BACK UP, SO RT THROTTLE WAS PULLED BACK TO MATCH LT ENG'S N1 SPEED. A/C RETURNED FOR MX. LT THRUST REVERSER INBOARD UNLOCK SW FOUND SHORTED TO CLOSED POSITION WHICH CAUSED HYD PRESS TO BE SECURED PRIOR TO INBD T/R ACT TRAVELING TO OVERSTOW POSITION. ALLOWED INBD SIDE OF T/R BUCKETS TO HANG IN AIRSTREAM, AND RETARD LT THROTTLE LVR THRU FEEDBACK CABLE. MX REPLACED LT T/R INBD STOW SW. OTBD T/R ACT FOUND LEAKING AND WAS REPLACED. AN INSPECT OF LT T/R FEEDBACK CABLE ACCOMP WITH NO NOTED DEFECTS. SYSTEM OPS CHECKS GOOD. A/C RETURNED TO SERV.

ATA 7261

Part: ENGINE — LEAKING (LEFT) · airframe 4,123 hrs · 3,413 cycles

THE CREW REPORTED THAT WHILE PERFORMING A MAINTENANCE TEST FLIGHT TO CHECK FLAP ROLL RATE, A HOT OILY SMELL WAS NOTED IN THE COCKPIT AS COMING FROM A WEMAC AIR VENT. THE SMELL WAS STRONGEST ON TAKEOFF, BUT EVIDENT IN ALL FLIGHT PHASES. ALL OTHER INDICATIONS, INCLUDING PRESSURIZATION AND ENVIRONMENTAL SYSTEMS WERE NORMAL. MAINTENANCE REPLACED THE NR 1 ENGINE DUE TO THE DISCOVERY OF OIL IN THE INTERNAL FAN BYPASS. ALL ENGINE OPERATIONAL CHECKS PERFORMED WERE WITHIN LIMITATIONS. THE AIRCRAFT WAS RETURNED TO SERVICE.

ATA 3425

Part: COMPENSATOR — MALFUNCTIONED (FLT DIRECTOR) · airframe 2,443 hrs · 1,980 cycles

DURING FLIGHT AIRCRAFT EXPERIENCED A PFD FAILURE AND LOST BOTH PF'S. PILOTS CONTACTED CENTER AND RECIEVED VECTORS TO CAS WERE THEY LANDED WITH NO FURTHER PROBLEMS.

ATA 3425

Part: COMPENSATOR — MALFUNCTIONED (COCKPIT) · airframe 2,443 hrs · 1,980 cycles

DURING FLIGHT AIRCRAFT EXPERIENCED A PFD FAILURE AND LOST BOTH PF'S. PILOTS CONTACTED CENTER AND RECEIVED VECTORS, LANDED WITH NO FURTHER PROBLEMS.