N918DG

Part: OXYGEN MASK — DEFECTIVE (COCKPIT) · airframe 3,486 hrs · 2,598 cycles

DURING THE PREFLIGHT CHECKLIST THAT A SCREW FELL OUT OF THE CO-PILOTS EMER OXYGEN MASK. PN MC10-15-166, SN 84007 THE DEFECTIVE MASK HAD BEEN OVERHAULED 8 MONTHS 418.8 HR TT IN SERVICE PRIOR TO FAULT.

Part: CONTROL SWITCH — DEFECTIVE (LANDING GEAR) · airframe 3,481 hrs · 2,594 cycles

DURING THE LANDING ROLLOUT THEY RECEIVED A CAS MSG INDICATION OF A BRAKE ANTI-SKID FAILED CONDITION. TROUBLESHOOTING FOUND THAT THE LG CONTROL SWITCH WAS DEFECTIVE. THE DEFECTIVE SWITCH WAS REMOVED PN 7632608500-007 & NEW SWITCH WAS INSTALLED. OPERATIONS CHECKED OK.

Part: ACTUATOR — FAILED (HORIZ STAB) · airframe 3,388 hrs · 2,523 cycles

THE SEC TRIM FAIL AMBER CAS MSG ILLUMINATED IN FLIGHT WITH THE AUTOPILOT ENGAGED & IN A CLIMB. SLIGHT NOSE DOWN FORCE WAS ENCOUNTERED AFTER AUTOPILOT WAS DISENGAGED. THEY INDICATED THEY WERE ABLE TO RE TRIM WITH AUTOPILOT OFF USING PRIMARY TRIM. TROUBLESHOOTING FOUND THE PITCH TRIM ACTUATOR PN 6627401000-009 SN BO299 DEFECTIVE. TOTAL TIME IN SERVICE FOR THIS ACTUATOR 992.2 HRS. THE FAULTY ACTUATOR WAS REMOVED & A TESTED UNIT INSTALLED. FUNCTIONAL CHECKS SATISFACTORY.

Part: WARNING LIGHT — ILLUMINATED (RT ENGINE) · airframe 3,359 hrs · 2,501 cycles

AFTER DEPARTURE AT ABOUT 10,000FT WHEN THE CREW NOTED THAT THE RT ENGINE ITT INDICATION WAS JUST ABOVE THE NORMAL OPERATING RANGE & WAS INCREASING. ATTEMPTED TO CONTROL THE ENG ITT WITH DIFFERENT POWER SETTINGS. THE ITT THEN ROSE ABOVE THE READINGS ON THE INDICATOR. IT WAS DECIDED AT THAT POINT TO SHUT THE ENG DOWN. THERE WERE NO ENG VIBRATIONS OR ANY OTHER ABNORMAL ENG INDICATIONS DURING THIS TIME. THE REQUIRED CHECKLISTS WERE COMPLETED & ATC WAS NOTIFIED OF THE SITUATION & A REQUEST TO LAND WAS GRANTED. AFTER BURNING OFF FUEL TO MAKE MAX LANDING WEIGHT, THE LANDING WAS UNEVENTFUL. TROUBLESHOOTING & VISUAL INSPECTION OF THE RT ENG FOUND NO DEFECTS WITH THE ENG. ENG RUNS WERE COMPLETED WHILE MONITORING ENG PARAMETERS WITH A DIAGNOSTIC COMPUTER. IT WAS DETERMINED THAT THE ITT READINGS ON INDICATOR WERE FALSE. THE DAU WERE SWAPPED FOR TROUBLESHOOTING & NORMAL ITT READINGS WERE REGISTERED ON INDICATOR. THE DAUS WERE LEFT IN THE SWAPPED POSITION & THE ACFT WAS RETURNED TO SERVICE.

Part: VANE — DEFECTIVE (AOA) · airframe 3,326 hrs · 2,476 cycles

THE RT AOA HEAT FAILED IN FLIGHT. THE RT AOA VANE WAS FOUND TO BE DEFECTIVE & WAS REPLACED WITH NEW PN 6627308500-803.

Part: COMPUTER — DEFECTIVE (STALL WARNING) · airframe 3,308 hrs · 2,464 cycles

THE STALL WARNING SYS WAS GIVING FALSE STALL INDICATIONS WHILE IN FLIGHT. TROUBLESHOOTING DETERMINED THAT THE DUAL STALL WARNING COMPUTER WAS DEFECTIVE. REMOVED THE DEFECTIVE STALL WARNING COMPUTER PN 6627308500-013 SN 320 & INSTALLED A REPAIRED UNIT. FUNCTIONAL CHECKS SATISFACTORY. THE ACFT WAS RETURNED TO SERVICE.

Part: SWIVEL FITTING — LEAKING (MLG BRAKE) · airframe 3,088 hrs · 2,307 cycles

CREW REPORTED A HYD LEAK DURING POST FLIGHT CHECK. MX TROUBLE SHOT & FOUND THE NR 3 & NR 4 BRAKE SWIVEL UNITS LEAKING. REPLACED THE UNITS WITH NEW. COMMON LEAK FOUND ON LEAR 45 BRAKES.

Part: CONTROL BOX — FAILED (HORIZ STAB) · airframe 3,058 hrs · 2,282 cycles

CREW REPORTED THAT DURING APPROACH TO LANDING THAT PRIMARY PITCH TRIM FAILED & THE CREW WAS REQUIRED TO SWITCH TO SECONDARY TRIM. TROUBLESHOOTING FOUND THE HORIZONTAL STABILIZER TRIM CONTROL BOX DEFECTIVE. THE UNIT WAS REPLACED WITH A REPAIRED UNIT. FUNCTIONAL CHECKS WERE SATISFACTORY.

Part: DOWNLOCK SWITCH — DEFECTIVE (MLG) · airframe 1,698 hrs · 1,650 cycles

DURING A NIGHT APPROACH, AFTER EXTENDING LANDING GEAR, LT MAIN GEAR INDICATION LIGHT DID NOT ILLUMINATE. ABNORMAL CHECKLIST WAS COMPLETED FOR THE GEAR ABNORMALITY. GEAR INDICATIONS LIGHTS TESTED NORMALLY. HYD AND ELECTRICAL SYSTEMS WERE NORMAL. ON THE THIRD LANDING GEAR RECYCLE, LT GEAR INDICATION FLICKERED AND BECAME STEADY BUT EXTREMELY DIM. LANDING AND TAXI WAS WITHOUT INCIDENT. TROUBLESHOOTING IDENTIFIED THE LEFT MLG DOWN/LOCKED SWITCH AS DEFECTIVE. A NEW LT MLG DOWNLOCK SWITCH WAS INSTALLED. OPS CHECKS WERE SATISFACTORY AND THE ACFT WAS RETURNED TO SERVICE.

Part: WIRE HARNESS — DEFECTIVE (NLG STEERING) · airframe 1,651 hrs · 1,619 cycles

THE CREW REPORTED A NOSE WHEEL STEERING FAULTED, THEN FAILED DURING GROUND TAXI. TROUBLESHOOTING FOUND THE NOSE WHEEL STEERING ELECTRICAL HARNESS TO BE DEFECTIVE. THE HARNESS WAS REPLACED WITH A NEW UNIT AND OPS CHECKS WERE SATISFACTORY.

Part: WIRE HARNESS — DEFECTIVE (NLG STEERING) · airframe 1,621 hrs · 1,598 cycles

CREW REPORTED THAT A NOSE WHEEL STEERING CAS MESSAGE DISPLAYED, MX TROUBLESHOOTING IDENTIFIED THE NOSE WHEEL STEERING WIRING HARNESS AS DEFECTIVE. THE HARNESS, WAS REMOVED AND NEW WIRE HARNESS WAS INSTALLED. SYSTEM CHECKED WERE SATISFACTORY. MM 32-50-09.

Part: INLET — CRACKED (RT ENGINE) · airframe 244 hrs · 151 cycles

DURING THE REPETITIVE INSPECTION OF THE ENGINE AIR INLET IAW SB505-71-0001 R1 A CRACK WAS OBSERVED IN THE RT INLET AT APPROX THE 12 O'CLOCK POSITION. REINSPECTION AGAIN IN 20 CYCLES. THE LT ENGINE INLET WAS SATISFACTORY AT THIS TIME.

Part: DRIVE UNIT — DEFECTIVE (TE FLAPS) · airframe 167 hrs · 111 cycles

THE CREW REPORTED THAT DURING ACFT POWER UP THAT A FLAP FAIL CAS MASSAGES WAS INDICATED. TROUBLESHOOTING IDENTIFIED THAT THE FLAP POWER DRIVE UNIT (PDU) WAS DEFECTIVE. REMOVED THE DEFECTIVE PDU, SN 0086. INSTALLED A REPAIRED UNIT. F/T SATISFACTORY.

Part: CONTROL UNIT — DEFECTIVE (BRAKE) · airframe 125 hrs · 85 cycles

THE CREW REPORTED THAT DURING LANDING ROLLOUT THAT THE LT BRAKE WAS VERY "TOUCHY" DURING APPLICATION OF BRAKES. THE BRAKE CONTROL UNIT (BCU) WAS REPLACED WITH A MODIFIED BRAKE CONTROL UNIT. OPS CHECKS WERE SATISFACTORY. OFF PN DAP00100-06, SN 229950088.