Global Aviation, Inc.

Operated by Global Aviation (per NTSB report)

Part: CABIN PRESSURE — MALFUNCTIONED · airframe 7,976 hrs · 5,840 cycles

DURING CRUISE AT FL360, WITH CABIN CONTROLLER SET TO FL380 AND NORMAL PRESSURIZATION. AT TOP OF DESCENT REDUCED POWER SLIGHTLY AND AT THE SAME TIME THE CABIN RATE KNOB TURNED TO MIN AND CABIN CONTROLLER MOVED SLIGHTLY TOWARD FIELD ELEVATION. WITHIN SECONDS THE CABIN RATE INDICATED APPROXIMATELY 2,000 FPM CLIMB. A FEW SECONDS LATER THE CABIN ALT MASTER WARNING ILLUMINATED AND THE WARNING HORN SOUNDED. THE CABIN ALTITUDE INDICATION CLIMBED INTO THE RED ARC, NEVER SAW IT EXCEED 10,000 FT. REMAINED BETWEEN 9,000 AND 10,000 FT DURING THE ENTIRE EVENT. THRUST LEVERS WERE REDUCED TO IDLE AND A 4,000 FPM DESCENT WAS INITIATED. WHILE DESCENDING, CLEARED FOR THE APPROACH, AND A CONTINUOUS DESCENT WAS MAINTAINED UNTIL LANDING. 20 SECONDS INTO THE DESCENT WHILE STILL INDICATING A RAPID CABIN CLIMB, THE CABIN OXYGEN MASKS WERE DEPLOYED MANUALLY. AT THE SAME TIME, DIALED SEA LEVEL ON THE CABIN CONTROLLER, THE AIRCRAFT DESCENDED THROUGH 17,000 FT, AND THE CABIN BEGAN TO TRANSITION FROM A HIGH RATE OF CLIMB TO A NORMAL DESCENT. SHORTLY AFTER THE CABIN ALT MASTER WARNING EXTINGUISHED. PASSING THROUGH 10,000 FT ALL SYSTEMS AND INDICATIONS WERE NORMAL. PERFORMED PRESSURIZATION CHECKS WITH NO DISCREPANCIES NOTED, COULD NOT DUPLICATE ON GROUND, TOOK AIRPLANE FOR A FLIGHT CHECK, PERFORMED PRESSURIZATION CHECKS IN FLIGHT WITH NO DISCREPANCIES NOTED, COULD NOT DUPLICATE.

Part: BUSHING — WORN (STARTER GEN) · airframe 7,853 hrs · 5,748 cycles

DURING ARRIVAL, AFTER LEVELLING OFF AT 10,000 FT AN ABNORMAL VIBRATION WAS NOTICED. MOVING EACH THRUST LEVER INDEPENDENTLY INDICATED THAT THE VIBRATION WAS ASSOCIATED WITH THE NR 2 THRUST LEVER MOVEMENT. NR 2 ENGINE WAS REDUCED TO IDLE UNTIL LANDING, AND THEN SHUT DOWN AFTER LANDING. THERE WERE NO COCKPIT INDICATIONS AND NO GEN LIGHTS AT ANY TIME DURING THE EVENT. FROM THE FIRST DETECTED ABNORMAL VIBRATION UNTIL LANDING WAS 5-10 MINUTES. ONCE ON THE GROUND IT WAS DETERMINED THE NR 2 ENGINE STARTER GENERATOR WAS THE CAUSE OF THE INFLIGHT VIBRATION. REMOVED AND REPLACED THE STARTER GENERATOR. THE FAULTY STARTER GENERATOR HAD TSO: 305.7 HOURS AND CSO: 219 CYCLES SINCE THE LAST OVERHAUL. DISASSEMBLED AND FOUND THIS UNIT HAD A COM SIDE BEARING FAILURE. THIS CAUSED THE FAN TO START RUBBING ON THE FAN COVER. CLEANED AND INSPECTED. FOUND WORN BRUSHES AND WORN DAMPENER PLATE. VISUALLY AND DIMENSIONALLY INSPECTED. FOUND A WORN DRIVE END BEARING LINER.

Part: SERVO MOTOR — SHORTED (NLG STEERING) · airframe 12,478 hrs · 9,717 cycles

ON THE GROUND AT PAE, DURING TAXI OPERATIONS THE PILOT NOTICED WHEN THE NOSE WHEEL STEERING WAS USED IT WOULD POP THE CIRCUIT BREAKER, AND DISENGAGE THE NOSE WHEEL STEERING. THE PILOT MEL'D THE NOSE WHEEL STEERING IN ORDER TO RETURN HOME FOR MAINTENANCE. TECHNICIANS TROUBLESHOT THE PROBLEM AND FOUND THE NOSE WHEEL STEERING SERVO HAD FAILED, THE FAILED UNIT WAS INSTALLED ON 09/07/17 IN A REPAIRED CONDITION, FOR A 2000 HR INSPECTION. THE FAILED UNIT WAS REPLACED WITH A REPAIRED UNIT ON 12/28/17, AND THE AIRCRAFT WAS RETURNED TO SERVICE. THE REPAIR REPORT FOR THE FAILED NOSE WHEEL STEERING SERVO SHOWED THAT IT WAS DRAWING A HIGH CURRENT, UPON THE TEAR DOWN INSPECTION 2 RESISTORS WERE SHORTED OUT, AND THE MECHANICAL CLUTCH WAS OUT OF SPECS.

Part: ELEC CONNECTOR — DAMAGED (NLG) · airframe 2,305 hrs · 2,133 cycles

FOLLOWING MAINTENANCE OF NOSE LANDING GEAR STRUT REPACK, OPERATOR DEPARTED FACILITY AND AFTER TAKE-OFF, GEAR RETRACTION, HAD NOSE WHEEL STEERING FAIL INDICATION. OPERATOR SELECTED LANDING GEAR HANDLE DOWN AND THE WARNING INDICATION HAD EXTINGUISHED. UPON RETURN TO FACILITY, INSPECTION SHOWED THAT THE NOSE WHEEL STEERING GEARBOX CCONNECTOR PLUG BACK-SHELL HAD BROKEN AFTER CONTACT WITH SURROUNDING STRUCTURE. TECHNICIANS DID NOT NOTICE A CLEARANCE ISSUE ON PREVIOUS MAINTENANCE RETRACTION BUT STATE THAT THE NOSE WHEEL WELL IS A CLOSE TOLERANCE AREA. FURTHER INSPECTION REVEALED STEERING GEARBOX CONNECTION WAS DAMAGED IN THE PROCESS. GEARBOX AND HARNESS CONNECTOR WERE REPLACED WITH VERIFICATION OF CLEARANCE CHECK.

Part: INDICATOR — FAILED (TRIM TAB) · airframe 12,214 hrs · 9,490 cycles

NEW TRIM TAB INDICATOR FAILS TO OPERATE. OBTAINED TEAR-DOWN REPORT, FINDINGS OF NEEDLE STICKING INTERMITTENTLY, REQUIRES CLEANING AND ADJUSTMENT/OVERHAUL.

Part: CONTROLLER — INOPERATIVE (WINDOW HEAT) · airframe 7,245 hrs · 5,332 cycles

RIGHT WINDSCREEN GOES INTO OVERHEAT.

Part: APU — ODOR · airframe 1,130 hrs · 742 cycles

OIL SMELL IN CABIN AFTER APU START.

Part: BRAKE ASSY — LEAKING (NR 3) · airframe 12,078 hrs · 9,369 cycles

NR 3 BRAKE LEAKING FLUID.

Part: DISPLAY — DEFECTIVE (COCKPIT) · airframe 1,843 hrs · 862 cycles

AN AMBER FSU INOPERATIVE, INTERMITTENTLY APPEARS ON THE NR 1 MFD. THE MDC HAS ALSO RECORDED MFD CARD FAILURE.

Part: THERMAL SWITCH — DEFECTIVE (APU BAY) · airframe 7,197 hrs · 5,300 cycles

APU FIRE BELL AND LIGHT SOUNDED AND ILLUMINATED DURING AIRCRAFT ROLL OUT ON LANDING WITH APU OFF.

Part: WINDSHIELD — DELAMINATED (COCKPIT) · airframe 3,126 hrs · 2,911 cycles

COPILOT "A" WINDSHIELD DELAMINATED.

Part: ACTUATOR — LEAKING (NLG STEERING) · airframe 3,089 hrs · 2,883 cycles

NOSE STEERING ACTUATOR LEAKING.

Part: HEATER — INOPERATIVE (AOA VANE) · airframe 2,646 hrs · 1,706 cycles

LEFT AOA STALL VANE HEATER INOPERATIVE.

Part: LIGHT — LOOSE (LT WING) · airframe 4,991 hrs · 2,193 cycles

WING NAVIGATION LIGHT SOCKET LOOSE.

Part: SMOKE DETECTOR — INOPERATIVE (FAILED) · airframe 1,697 hrs · 792 cycles

CARGO SMOKE DETECTOR FAIL, CAS MESSAGE.

Part: ELECTRONIC UNIT — FAILED (FADEC) · airframe 1,697 hrs · 792 cycles

AUTO APR INHIBIT 1B, MCID 1312, DISPLAYED ON FADEC DOWNLOAD OF LT ENGINE.

Part: DISPLAY — INOPERATIVE (NR 2) · airframe 1,697 hrs · 792 cycles

NR 2 FILE SERVER UNIT, FSU, INOPERATIVE.

Part: POWER SUPPLY — DEFECTIVE (TAIL CONE) · airframe 3,169 hrs · 2,938 cycles

LOUD CLICKING HEARD FROM OVERHEAD SPEAKERS WHEN STROBE LIGHTS ON.

Part: WIRE — DAMAGED (FIRE LOOP)

LEFT ENGINE FIRE WARNING LIGHT ILLUMINATED ON FINAL APPROACH. ALL OTHER INDICATIONS WERE NORMAL. FOUND DAMAGED & FRAYED WIRE IN PYLON FOR AFT BODY FIRE LOOP. CUT BACK WIRE LEAD, CRIMPED NEW CONNECTOR PIN ON LEAD AND REASSEMBLED CONNECTOR. OPS CHECK OF SYS WAS NORMAL AFTER REPAIR.

Part: FIRE WARNING — FALSE ACTIVATION (RT ENGINE) · airframe 7,319 hrs · 5,221 cycles

CREW EXPERIENCED FIRE WARNING ON RT ENGINE DURING APPROACH. BOTH FIRE BOTTLES FIRED; ENGINE WAS SHUT DOWN WITHOUT CHANGE OF FIRE-WARNING INDICATION. LANDED, WITHOUT INCIDENT. NO EVIDENCE OF ACTUAL FIRE FOUND. AIRCRAFT FLOWN ON SPECIAL FLIGHT PERMIT; FALSE FIRE-WARNING COULD NOT BE DUPLICATED.