N984QS

Part: CONTROL MODULE — MALFUNCTIONED (STAB TRIM) · airframe 9,408 hrs · 5,882 cycles

STAB TRIM RESPONDS INTERMITTENTLY AND WITH LIMITED RESPONSE TO BOTH PILOT AND CO-PILOT PRIMARY TRIM SWITCH INPUTS. SWITCHED TO SECONDARY TRIM WITH SAME RESULTS. NEVER RECEIVED AN ASSOCIATED AMBER CAS MESSAGE. R & R HORIZ STAB TRIM ELECTRONIC CONTROL MODULE. SYS OPS, CHECK GOOD IAW MM 27-40-00.

Part: CONTROL HANDLE — MALFUNCTIONED (MLG) · airframe 9,275 hrs · 5,796 cycles

LANDING GEAR HANDLE WOULD NOT ALLOW FOR GEAR RETRACTION AFTER TAKEOFF. REMOVED FAULTY LANDING GEAR CONTROL HANDLE. INSTALLED REPAIRED LANDING GEAR CONTROL HANDLE. PERFORMED OPS CHECK GOOD IAW MM 32-30-01.

Part: SQUAT SWITCH — MALFUNCTIONED (MLG) · airframe 8,678 hrs · 5,422 cycles

AFTER TAKEOFF, GEAR HANDLE WOULD NOT MOVE TO RETRACT POSITION. TROUBLE TO NOSE STRUT UNDERSERVICED AND NOSE SQUAT SWITCH ON EDGE OF SPEC. SERVICED STRUT IAW MM CH 12-10-38. ADJUSTED NOSE SQUAT SWITCH IAW MM, CHAP 32-60-00. GEAR SWING OPS CK GOOD.

Part: UNKNOWN — SMOKE (CABIN)

ON THE GROUND WITH THE APU RUNNING APU BLEED SWITCH ON SMOKE WAS OBSERVED IN THE CABIN. KDTS-KGNV. (S)

Part: ACM — SMOKE · airframe 8,280 hrs · 5,167 cycles

ON THE GROUND WITH THE APU RUNNING APU BLEED SWITCH ON SMOKE WAS OBSERVED IN THE CABIN. APU AND ACFT WHERE SHUT DOWN IAW CHECKLIST. DID NOT TROUBLESHOOT AS SMOKE WAS VERY THICK. TAILCONE COMPARTMENT WAS INSPECTED AFTER SHUTDOWN AND AN UNUSUAL AMOUNT OF HEAT WAS FELT IN THE TAILCONE COMPARTMENT. SUSPECT ONE OR BOTH PACS ARE THE CAUSE OF THE SMOKE. FOUND CABIN ACM TURBINE ASSY SEIZED. REMOVED ACM ASSY FROM ACFT. DIASSEMBLED ASSY FOR CLEANING, REASSEMBLED ACM ASSY WITH REPAIRED ACM IAW MM 21-51-00. NEED OK TO REINSTALL ASSY ONTO ACFT. OK TO REINSTALL CABIN PAC REINSTALLED PAC IAW MM 21-51-00. OPS CHECK DUE, OPS CHECKS GOOD. 08/2/08

Part: A/C PACK — SMOKE · airframe 8,280 hrs · 5,167 cycles

ON THE GROUND WITH THE APU RUNNING APU BLEED SWITCH ON SMOKE WAS OBSERVED IN THE CABIN. APU AND AIRCRAFT WAS SHUT DOWN PER CHECKLIST. DID NOT TROUBLESHOOT AS SMOKE WAS VERY THICK. TAILCONE COMPARTMENT WAS INSPECTED AFTER SHUTDOWN AND AN UNUSUAL AMOUNT OF HEAT WAS FELT IN THE TAILCONE COMPARTMENT. SUSPECT ONE OR BOTH PACKS ARE THE CAUSE OF THE SMOKE. SUB: (SQK) - FOUND CABIN ACM TURBINE ASSY SEIZED. REMOVED, ACM ASSY FROM A/C. DISASSEMBLED ASSY FOR CLEANING PURPOSES, REASSEMBLED ACM ASSEMBLY WITH REPAIRED ACM IAW 750 M/M 21-51-00. NEED OK TO REINSTALL ASSY ONTO A/C. OK TO REINSTALL CABIN PACK. REINSTALLED PACK IAW 750 M/M 21-51-00. OPS CHECK DUE, OPERATIONAL CHECKS GOOD.

Part: VALVE — MALFUNCTIONED (FUEL CROSSFEED) · airframe 8,219 hrs · 5,122 cycles

RT CTR TO WING VALVE UNABLE TO PUT FUEL FROM CTR TANK TO RT WING. WHEN LT TANK X-FEED WAS SELECTED FUEL MOTV FAIL MESSAGE ILLUMINATED IN CAS. PERFORMED TASK 28-20-00-710 FUEL SHUTOFF VALVE OPERATION, POSTION AND INDICATION TEST, ALL OPERATIONS WERE NORMAL. UPON ARRIVAL FEED IN LT WAS ONLY 20 LBS HIGHER THAN RT. STARTED RT ENG WITH 100 LBS OF FUEL IN CTR TANK, ALL FUEL TRANSFERRED TO RT TANK. STARTED LT ENG AND SELECTED FUEL X-FEED L-WING TO R-ENG, SYS OPERATED NORMALY IAW CESSNA MM 28-20-00.

Part: ACM — FROZEN (AFT SERVICE BAY) · airframe 7,681 hrs · 4,811 cycles

COULD NOT CONTROL CABIN TEMP -THEN RAN ABNORMAL PROCEDURES. AFFECTED PAC WAS TURNED OFF. ONCE PARKED AT FBO CABIN FILLED WITH SMOKE. KHPN-KFLL.REMOVED DEFECTIVE CABIN PAC. INSTALLED REPAIRED UNIT. ALSO REPLACED BOTH CABIN & COCKPIT COALESCER P/N 746451-3 OPS CK OF ECU'S GOOD. WORK DONE I/A/W CESSNA CITATION X M/M CHAPTER 21-51-00.

Part: WARNING LIGHT — ILLUMINATED (OVERPRESSURE) · airframe 7,004 hrs · 4,389 cycles

ON TAKEOFF ROLL HP DUCT OVERPRESS RT AMBER CAS MESSAGE CAME ON AND REMAINED ON. [SUP 4-19-07] REMOVED AND REPLACED OVER OVER PRESS SWITCH IAW 760 MM 30-10-00 OPS END LEAK CHECK GOOD.

Part: A/C PACK — ODOR · airframe 7,004 hrs · 4,389 cycles

THE COCKPIT PAC TEMPERATURE IS UNCONTROLLABLE IN BOTH MANUAL AND AUTO MODES. IT GOES TO FULL HOT TEMPERATURE AND PRODUCES A FOUL OILY ODOR IN THE CABIN. DIVERTED. [SUP 4-19-07] REMOVED & REPLACED ACM, HOUSING & ASPIRATOR IAW HAMILTON SUNSTRAND CMM 21-50-03 & 750 M/M 21-51-00. OPS CHECK GOOD.

Part: STRUT — UNDERSERVICED (RT MLG) · airframe 6,286 hrs · 3,941 cycles

UNLOCK LIGHT STAYED ON AFTER GEAR RETRACTION, CYCLED GEAR AND UNLOCK LIGHT WENT OUT AFTER 20 SECONDS. ON POST FLT, FOUND DAMAGE TO A/C AT ENTRY POINT FOR RIGHT MAIN TIRES. DAMAGE TO WHEEL WELL WAS CAUSED BY THE RT OLEO NOT FULLY EXTENDING AFTER TAKEOFF AND THE NR 3 (RT I/B) MAIN TIRE CONTACTING THE WHEEL WELL FAIRINGS DURING GEAR RETRACTION. INSPECTED AIRCRAFT AND FOUND O/B AND AFT FAIRING PANELS ON RT WHEEL WELL DAMAGED. REMOVED LOOSE PIECES OF THE DAMAGED COMPOSITE FAIRINGS, USED ALUMINUM TAPE TO TAPE OVER DAMAGED AREA, COMPLIED WITH GEAR OP'S CHECK AND VERIFIED GEAR RETRACTS AND EXTENDS CORRECTLY. REMOVED AND REPLACED RT INBOARD MAIN TIRE/WHEEL ASSY AND REPLACED IT WITH AN OVERHAULED ONE. WORK PERFORME

Part: COMPUTER — FAILED · airframe 6,281 hrs · 3,939 cycles

SHORTLY AFTER TAKEOFF, PRIMARY TRIM STOPPED WORKING. IT WORKED OK FOR THE FIRST 1.5 TO 2 MINUTES. SELECTED STBY TRIM AND IT ALSO DID NOT WORK. STBY TRIM WORKED AFTER 5 MIN OF NOT WORKING. FIRST INDICATION OF PROBLEM WAS NO FLIGHT DIRECTOR MODES COULD BE SELECTED AND AUTO PILOT WOULD NOT ENGAGE. AFTER 5 MINUTES THE STBY TRIM STARTED WORKING. SET TRIM FOR ABOUT 4 DEGREES, CONFIGURED AC FOR 15 DEGREES FLAP LANDING. WHILE TAXIING TO RAMP PRIMARY TRIM INITIALLY WOULD NOT WORK, THEN STARTED WORKING AGAIN. ABOUT A MINUTE PRIOR TO TAKEOFF, PFD SELECTOR WAS PUSHED ONCE TO MOVE CONTROL FROM LT FLIGHT DIRECTOR TO RT FLIGHT DIRECTOR. PFD SELECTOR WAS STUCK. REMOVED AND REPLACED FGC (GC-810). OPS CHECKED GOOD IAW MM.

Part: CONNECTOR — MALFUNCTIONED (FLAP SYS) · airframe 6,006 hrs · 3,763 cycles

CONSTANT CHIME AND BRIEF MASTER WARNING RECEIVED DURING TAKEOFF ROLL. FOUND LT FLAP RESOLVER CONNECTOR JL041 WITH MOISTURE. CLEANED AND DRIED PLUG JL041 PERFORMED NO TAKEOFF WARNINGS, OPS CHECK WITH NO DEFECTS NOTED. WORK DONE IAW 750 M/M CH27-50-01 REV 12.

Part: FLAP SYSTEM — MALFUNCTIONED (TE FLAPS) · airframe 5,869 hrs · 3,689 cycles

FLAPS FAILED IN UP POSITION DEPARTING KBUF, WOULD NOT RESET, DIVERTED TO CMH. VISUALLY INSPECTED FLAPS AND FLAPWELL COMPONENTS. LUBRICATED ACTUATOR BALLSCREWS PER CE-750 M/M 12-20-05. RESET BITE CODES ON FLAP CONTROLLER. CHECKED RESOLVER CONVERTER VOLTAGE OUT PUTS UNDER NORMAL AND FREEZING CONDITIONS. NO DEFECTS NOTED. CYCLED FLAPS SEVERAL TIMES AND VERIFIED NO MORE BITE CODES WERE TRIPPED. PERFORMED ROTARY TEST OF FLAPS. CHECKS GOOD. COULD NOT DUPLICATE ORIGINAL FAULT, C/W IAW CE-750 M/M 27-50-00.

Part: WARNING LIGHT — ILLUMINATED (MLG) · airframe 5,592 hrs · 3,527 cycles

GEAR UNLOCK LIGHT ILLUMINATED AFTER T/O AND GEAR SELECTED UP. GEAR WAS RECYCLED WITH SAME RESULT. IT SOUNDED LIKE THE DOORS WERE OPEN. ITEM IS UNDER INVESTIGATION.

Part: LANDING GEAR — UNSECURE · airframe 5,345 hrs · 3,379 cycles

GEAR BUMP WAS EXPERIENCED NUMEROUS TIMES DURING CLIMB TO CRUISE ALTITUDE AND OCCASIONALLY ON DESCENT; NOT AT ALL DURING CRUISE FLIGHT. ACCOMPLISHED "GEAR BUMP" TROUBLESHOOTING IAW 750 TEAM X ENGINEERING CHECKLIST. NO DEFECTS NOTED. SERVICED NLG STRUT IAW CE 750 TEM X ENGINEERING CHECKLIST, 750MM 12-10-38 DMU INSTALLED AND WILL BE CHECKED ON OCF.

Part: CONTROL CABLE — OUT OF ADJUST (RT MLG) · airframe 5,256 hrs · 3,326 cycles

INFLIGHT, CLIMBING THROUGH 35,000 FT, 3 LOUD AUDIBLE THUMPS HEARD AND FELT EMITTNG FROM LT FORWARD NOSE COMPARTMENT. FOUND RT MAIN FREE FALL CABLE W/TENSION CAUSING RT MAIN GEAR HOOK TO BE UNSEATED IN EXTEND POSITION. READJUSTED RT MAIN GEAR FREEFALL TENSION TO RESLACK IAW THE 750MM 32-30-05 FREEFALL CHECK GOOD IAW 750 M/M 32-00-01.

Part: MANIFOLD — FAILED (NLG) · airframe 5,225 hrs · 3,308 cycles

ON DESCENT TWO LOUD BANGS CAME FROM THE SAME AREA IN THE NOSE GEAR. - REMOVED LANDING GEAR CONTROL MANIFOLD DUE TO INTERNAL FAILURE. INSTALLED SERVICEABLE MANIFOLD IAW CE750 M/M CH 32-30-02. OPS CHECKED AND LEAK CHECKED GOOD. MANIFOLD WAS MODIFIED AND RETURNED TO SERVICE BY PNEUDRAULICS INC CRS PD6R469J

Part: LANDING GEAR — NOISY (NOSE) · airframe 5,221 hrs · 3,305 cycles

ON CLIMB A LOUD BANG CAME FROM NOSE GEAR AREA. ON DESCENT TWO LOUD BANGS CAME FROM SAME AREA. THE LAST ONE WAS VERY LOUD. ITEM IS UNDER INVESTIGATION.

Part: LOGIC CARD — FAILED (NLG) · airframe 5,041 hrs · 3,187 cycles

NOSE GEAR BUMPS DURING CLIMB-OUT AT MID TO UPPER 20,000 FT 300KTS INDICATED (CREW STATES NO CHANGE IN GEAR UP INDICATION). REMOVED AND REPLACED LOGIC CARD NC002 IAW 750MM 24-53-00. COMPLIED WITH GEAR BUMP TROUBLESHOOTING IAW 750MM 32-30-00.

Part: WHEEL — NOISY (NLG) · airframe 4,570 hrs · 2,921 cycles

DURING FLIGHT, LOUD BANGING NOISE FROM NOSE WHEEL. NOSE WHEEL DROPS A LITTLE AND THEN IS SLAMMED BACK UP MAKING LOUD CLUNK. HAPPENED APPROX 8 TIMES IN A 4 HR FLIGHT. ITEM IS UNDER INVESTIGATION.

Part: ACM — ODOR (CABIN COOLING) · airframe 3,730 hrs · 2,385 cycles

COCKPIT TEMP SELECTOR CANNOT CONTROL TEMP IN EITHER MANUAL OR AUTO MODE, COCKPIT TEMP (SUPPLY) REMAINS AT APPROX 140 DEGREES DURING FLIGHT. TEN MINUTES AFTER LANDING SUPPLY TEMP ROSE TO APPROX 235 DEGREES ACCOMPANIED BY STRONG ODOR, SIMILAR TO AN OVERHEATED ODOR. REMOVED AND REPLACED AFT ACM IAW CESSNA 750 MM CHAPTER 21-51-00 AND HAMILTON SUNDSTRAND MM CHAPTER 21-50-03, OPS CHECK AND LEAK CHECK GOOD.