N800FL

Part: SWITCH — STUCK (LANDING GEAR) · airframe 12,853 hrs · 10,439 cycles

THE CREW REPORTED THAT AFTER TAKEOFF & GEAR RETRACTION AN UNSAFE GEAR INDICATION, 3 RED LIGHTS & 1 MAIN GEAR GREEN LIGHT. THE CREW CYCLED THE GEAR BACK DOWN & RETURNED BACK TO THE AIRPORT FOR MAINTENANCE. TROUBLESHOOTING FOUND THE RT NORMAL LG MICRO SWITCH CONTACTS STUCK PN 9006EN42. THE DEFECTIVE SWITCH WAS REMOVED & A NEW SWITCH WAS INSTALLED & ADJUSTED IAW AMM. OPERATIONS CHECKED SATISFACTORY.

Part: WINDOW — FAILED (CABIN) · airframe 12,782 hrs · 10,347 cycles

THE PILOT, SIC, REPORTED THAT WHILE CLIMBING OUT OF FL320 TO FL360, HE HEARD A LOUD BANG. THE SIC STATED THAT HE LOOKED OVER HIS SHOULDER TO THE CABIN & THE PAX ADVISED THAT THE NR 3 LT CABIN WINDOW HAD CRACKED. THE SIC ADVISED THE PIC OF THE EVENT. THE PIC DONNED HIS O2 MASK & ASKED THE SIC TO INVESTIGATE. THE SIC INDICATED THAT HE COULD SEE THE OUTER PANE OF THE NR 3 LT WINDOW WAS CRACKED ACROSS THE WINDOW, FRAME TO FRAME. THE CREW DISCUSSED BRIEFLY & DECIDED TO RETURN TO THE DEPARTING AIRPORT. THE PAXS WERE ADVISED & WERE GIVEN INSTRUCTIONS, THE CREW CONTACTED CTR & ASKED FOR RETURN INSTRUCTIONS & DESCENT TO 10,000 FT. THE CREW WAS REQUIRED TO BURN OFF EXTRA FUEL TO PREVENT AN OVERWEIGHT LANDING. INSPECTION OF THE ACFT AFTER SHUTDOWN FOUND A LARGE SECTION OF THE NR 3 LT CABIN WINDOW OUTER PANE MISSING. THIS WINDOW WAS ORIGINAL TO THE AIRCRAFT. HE NR 3 LT WINDOW ALONG WITH 4 OTHER ORIGINAL WINDOWS WERE REPLACED AS A PRECAUTION.

Part: PUMP — FAILED (HYD SYSTEM) · airframe 12,549 hrs · 10,204 cycles

FLIGHT CREW REPORTED THAT THE RT ENGINE DRIVEN HYDRAULIC PUMP LOW PRESSURE LIGHT CAME ON IN FLIGHT. TROUBLESHOT AND IDENTIFIED THE RT ENGINE DRIVEN HYDRAULIC PUMP AS DEFECTIVE. REMOVED PUMP, AND INSTALLED AN O/H PUMP. LEAK AND OPS CHECKED SATISFACTORY.

Part: GCU — DEFECTIVE (NR 1 GENERATOR) · airframe 12,543 hrs · 10,202 cycles

DURING THE TAKEOFF ROLL, CREW REPORTED THAT THE NR 1 DC GENERATION SYS FAILED PRIOR 80 KNOTS AND THE TAKEOFF WAS ABORTED. TROUBLESHOOTING IDENTIFIED THE NR 1 GENERATOR CONTROL UNIT AS DEFECTIVE. THE DEFECTIVE GCU WAS R & R WITH A REPAIRED UNIT.

Part: FIRE LOOP — DEFECTIVE (NR 2 NACELLE) · airframe 12,381 hrs · 10,089 cycles

THE FLIGHT CREW REPORTED THAT DURING THE PREFLIGHT INSPECTION THE NR 2 ENGINE FIRE DETECTION SYSTEM FAILED TO TEST. TROUBLESHOOTING DETERMINED THAT THE ZONE 2 FIRE LOOP WAS DEFECTIVE PN 3001-133-900-500-6. INSTALLED NEW FIRE LOOP IAW THE LMM CHAPTER 72-00-05 AND AMM 26-10-00 FUNCTIONAL CHECKS SATISFACTORY.

Part: LINE — CHAFED (VENTURI) · airframe 12,369 hrs · 10,080 cycles

THE VENTURI VACUUM LINE, FROM THE PRESSURIZATION CONTROLLER TO THE CABIN AIR OPERATED VENTURI IS BEING RUBBED THROUGH BY THE AILERON CONTROL CABLE THAT SITS DIRECTLY ABOVE IT. THE LINE SHOULD HAVE A BEND THAT GIVES IT GREATER CLEARANCE FROM THE FLIGHT CONTROL CABLE.

Part: CONTROLLER — DEFECTIVE (RT WINDSHIELD) · airframe 12,086 hrs · 9,891 cycles

THE CREW REPORTED THAT THE RT WINDSCREEN WOULD OVERHEAT WITH THE LT AND RT WINDSHIELD HEATS ON. TROUBLESHOOTING IDENTIFIED THE RT TEMP CONTROL UNIT AS DEFECTIVE PN ND0075-2011. REPLACED UNIT WITH NEW TEMP CONTROL, FUNCTIONAL CHECKS SATISFACTORY.

Part: COMPUTER — DEFECTIVE (LT ENGINE) · airframe 11,970 hrs · 9,803 cycles

CREW REPORTED THE LT ENGINE DEEC LIGHT COMES ON STEADY IN FLIGHT. THE ENGINE COMPUTER WAS REMOVED. A NEW COMPUTER WAS INSTALLED. FUNCTIONAL CHECKS WERE SATISFACTORY.

Part: PUMP — FAILED (RT FUEL BOOST) · airframe 11,852 hrs · 9,730 cycles

THE CREW REPORTED THAT THE RT WING FUEL BOOST PUMP FAILED. THE FAILED FUEL BOOST PUMP WAS INSTALLED 8 MONTHS PRIOR AND LASTED ONLY 283.5 HRS AND WAS O/H.

Part: PUMP — LOW PRESSURE (HYD SYSTEM) · airframe 11,773 hrs · 9,679 cycles

INVESTIGATED REPORTED "HYD 2 LO PRESS" ANNUNCIATOR LIGHT INDICATION. REPLACED FAILED NR 2 ENGINE HYD PUMP WITH AN O/H PUMP AND DRAINED HYD SYS RESERVOIR, REPLACED SYS SUCTION FILTER. HYDR SYS OPS NORMAL AFTER PUMP REPLACEMENT. HYD PUMP TSN/TSOH UNKNOWN, TRANSIENT ACFT. RECOMMEND O/H FACILITY INSPECT FAILED PUMP AT TEAR-DOWN FOR ANALYSIS.

Part: PUMP — DEFECTIVE (HYDRAULIC) · airframe 11,773 hrs · 9,679 cycles

THE CREW REPORTED THAT THE "HYD 2 LO PRESS" ANNUNCIATOR ILLUMINATED DURING LANDING. TROUBLESHOOTING IDENTIFIED THE NR 2 ENGINE HYD PUMP AS DEFECTIVE. THE PUMP WAS REMOVED FROM SERVICE AND REPLACED WITH O/H UNIT ALONG WITH THE HYD SUCTION FILTER.

Part: PRESSURE SWITCH — DEFECTIVE (HYDRAULIC SYS) · airframe 11,743 hrs · 9,659 cycles

THE CREW REPORTED THE HYDRAULIC PRESSURE NR 2 LOW PRESSURE ANNUNCIATOR ILLUMINATED. MAINTENANCE TROUBLESHOT SYSTEM AND FOUND THE HYDRAULIC LOW PRESSURE SWITCH DEFECTIVE. REMOVED THE DEFECTIVE SWITCH S/N 6005TW AND INSTALLED A NEW LOW PRESSURE SWITCH P/N 211C223-647 S/N M024538. FUNCTIONAL CHECKS SATISFACTORY.

Part: PUMP — DEFECTIVE (NR 2 ENGINE) · airframe 11,633 hrs · 9,575 cycles

THE CREW REPORTED DURING CLIMBOUT THAT THE ENG 2 FUEL ANNUNCIATOR ILLUMINATED. THE FUEL FILTER HAD BEEN REPLACED 2 DAYS PRIOR WITH SATISFACTORY OPERATIONAL CHECKS. TROUBLSHOOTING FOUND THAT THE ENGINE DRIVEN FUEL PUMP WAS DEFECTIVE. P/N 3070850-57 S/N 396995. AN OVERHAULED FUEL PUMP WAS INSTALLED. OPERATIONAL CHECKS WERE SATISFACTORY. WE HAVE SEVERAL HAWKER 800S THAT HAVE HAD THE SAME DISCREPANCY OVER THE LAST FEW YEARS. DEFECTIVE PUMPS?

Part: SWITCH — INTERMITTENT (AIRBRAKE) · airframe 11,542 hrs · 9,509 cycles

CREW REPORTED THAT THE AIRBRAKE INDICATOR WAS INOP. REQUIRED SYSTEM TO BE DEFERRED. TROUBLESHOT SYSTEM AND FOUND THE LT AIRBRAKE SWITCH TO BE INTERMITTENT. REMOVED THE DEFECTIVE SWITCH AND INSTALLED A NEW SWITCH P/N 1322ZMK3.

Part: POSITION SWITCH — SHORTED (SLAT/FLAP) · airframe 11,415 hrs · 9,438 cycles

THE FLIGHT CREW DISCOVERED DURING THE PREFLIGHT CHECKS A SSU/FLAP FAULT INDICATION. MX TROUBLESHOT THE FAULT AND FOUND BOTH THE RT INBD/OTBD FLAP POSITION FLAP SWITCHES SHORTED TO GROUND AND THE F5 3AMP FUSE FOR THE NR2 SSU WAS OPEN. BOTH FLAP POSITION SWITCHES WERE REPLACED WITH NEW SWITCHES (PN 25-8NA5-155) AND RIGGED AND A NEW FUSE WAS INSTALLED. FUNCTIONAL CHECKS WERE SATISFACTORY. THE TECHS REPORTED THE DEFECTIVE SWITCHES REMOVED WERE IDENTIFIED AS BEING FROM THE SAME LOT. NOTE: THE DEFECTIVE SWITCHES WERE DESTROYED BEFORE THE LOT NUMBERS WERE RECORDED.