N603QS

Part: BATTERY — INOPERATIVE (ZONE 200) · airframe 6,479 hrs · 4,169 cycles

SEAT 10 AND 2 FORWARD LIGHTS BY ENTRY DOOR DO NOT CHECK AFTER PERFORMING AFM RECHARGE PROCEDURE REMOVED INOP BATTERY AND REPLACED WITH NEW. OPS CHECK GOOD REF AMM 33-50-6

Part: NONE — NONE (NONE) · airframe 6,465 hrs · 4,160 cycles

CABIN EMERG LIGHT: EMERGENCY LIGHT BELOW SEAT 10, EXIT LIGHTS LOWER PORTION OF ENTRY DOOR INOP. DID AFM PROCEDURE AND STILL NOT WORKING CORRECTIVE ACTION; OPS CHECK OF CABIN EMERGENCY LIGHT SHOWS LIGHT ILLUMINATES WHEN SWITCH IS TURNED ON. NO FAULT FOUND.

Part: PROXIMITY SWITCH — FAULTED (NLG DOOR) · airframe 6,452 hrs · 4,150 cycles

NOSE DOOR OPEN L AMBER CAS MESSAGE ILLUMINATED IN FLIGHT CLIMBING THROUGH 15,000FT. ADJUSTED PROX SWITCH RIGGING OF LH AFT LOWER NOSE DOOR. REF. CE-680A AMM 52-70-00.

Part: LIGHT — INOPERATIVE (ZONE 200)

LAV EMERG LIGHT: EMERGENCY LIGHT UNDER THE LAV IS INOP. CORRECTIVE ACTION: REPLACED LAV EMERGENCY TOEKICK LIGHT AT FRONT OF LOWER TOILET FACE PANEL WITH NEW. MX IAW CE680A IMM25-40-07. OPS CHECKS GOOD. P/N ON/OFF: CLE327-01-30/S/N ON:202400000008743 OFF S/N: N/A NSN

Part: BATTERY — INOPERATIVE (ZONE 200) · airframe 6,096 hrs · 3,885 cycles

CABIN EMERG LIGHT: SEAT 3 LIGHT AND RIGHT SIDE EXTERIOR EMERGENCY LIGHTS DID NOT ILLUMINATE DURING PREFLIGHT CHECK. WE RAN TWO 30 MIN CHARGING CYCLES AND THE FAILURE REMAINED. REMOVED !NOP POSITION #2 BATTERY CHARGER SYSTEM P/N:CBS28-1 S/N:5743M. INSTALLED CUSTOMER SUPPLIED REPAIRED BATTERY CHARGER SYSTEM P/N:CBS28-1 S/N:008205. ALL WORK DONE IN REF TO CE680A AMM CH 33-50-06.

Part: LIGHT — DEFECTIVE (CABIN) · airframe 5,923 hrs · 3,752 cycles

LAV EXIT SIGN/LIGHT: RED EXIT SIGN ON LAVATORY PANEL IS INOPERATIVE. ALL OTHER EMERGENCY LIGHTS ILLUMINATE. REMOVED INOP LAY EXIT LIGHT SIGN P/N 9919055-2 S/N 18C480A. INSTALLED A NEW LAV EXIT LIGHT SIGN P/N 9919055-2 S/N 22L261A. OPS CHECK GOOD IAW MM 25-40-07

Part: DOWNLOCK SWITCH — FAILED (MLG) · airframe 5,917 hrs · 3,749 cycles

AFTER GEAR RETRACTION, RECEIVED AMBER GEAR DISAGREE N CAS WITH AMBER DN. FOLLOWED ABNORMAL PROCEDURE AND EXTENDED LANDING GEAR. LANDED AS SOON AS PRACTICAL AT KMDW. R & R DOWNLOCK SWITCH IAW AMM 32-30-10. OPS CHECK GOOD.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 4,942 hrs · 3,126 cycles

EMERGENCY LIGHT INOPERATIVE AT SEAT 6. OPERATIONAL CHECK PERFORMED WITH NO FAULTS FOUND IAW MM 33-50-00.

Part: ACCESS PANEL — ELONGATED (ZONE 300) · airframe 4,069 hrs · 2,605 cycles

680A-0159 STAB ACCESS PANEL DOUBLER DAMAGE. HOLE ELONGATED. REPAIRED PER TEXTRON AVIATION ENGINEERING MEMO DQ36719M1DATED 10/12/2022.

Part: LIGHT — DEFECTIVE (ZONE 200) · airframe 3,266 hrs · 2,078 cycles

CABIN EMERG LIGHT: OVERHEAD EMERGENCY LIGHT REAR LEFT OVER SEAT 7 INOP. // SIGNOFF// TROUBLESHOT TO DEFECTIVE READING UGHT ASSEMBLY. PART ON ORDER.REMOVED LEFT CABIN WINDOW REVEAL PANEL TO ACCESS THE UGHT . REMOVED UGHT ASSEMBLY AND INSTALLED A NEW ASSEMBLY AND INSTALLED THE LEFT CABIN WINDOW REVEAL PANEL. UGHT OPS CHECK IS SATISFACTORY, ALL WORK ACCOMPLISHED IAW CE680A INTERIOR MM 25-20-27.

Part: LIGHT — UNKNOWN (CABIN) · airframe 2,584 hrs · 1,665 cycles

CABIN EMERG LIGHT: EMERGENCY LIGHT OVER SEAT 7 AND TOILET WERE INOPERABLE WITH INITIAL TEST OF EMER LIGHTING SYSTEM (EMER LIGHT SWITCH TO ARM, WITH BATTERIES IN THE OFF POSITION). SEAT 7 AND TOILET EMER LIGHTS ILLUMINATED WITH POWER ON AIRCRAFT. THE LIGHTS STAYED ON WITH EMER SWITCH TO OFF AND MAIN BATTERIES OFF. // SIGNOFF// PERFORMED SEVERAL EMERGENCY LIGHTING OPERATIONAL CHECK SEVERAL TIMES, ALSO IN FRONT OF THE PILOTS AND OPS CHECKS GOOD AT THIS TIME WITH NO DEFECT NOTED, ALL WORK OONE IAW CE·680A AMM 33-SO-00,

Part: MANIFOLD — DEFECTIVE (MLG) · airframe 1,060 hrs · 695 cycles

ALL LANDING GEAR RETRACTION DID NOT RETRACT - ON T/O, LANDING GEAR DID NOT RETRACT. NFP SAID GEAR HANDLE DIDN'T FEEL PROPER ON SELECTING RETRACT. GEAR INDICATOR SHOWED AMBER GEAR DOWN LIGHTS. CAS MESSAGE GEAR DISAGREE L,R AND N. // SIGNOFF // ALL LANDING GEAR RETRACTION DID NOT RETRACT - ON T/O, LANDING GEAR DID NOT RETRACT. NFP SAID GEAR HANDLE DIDN'T FEEL PROPER ON SELECTING RETRACT. GEAR INDICATOR SHOWED AMBER GEAR DOWN LIGHTS. CAS MESSAGE GEAR DISAGREE L,R AND N. // SIGNOFF// REMOVED THE LANDING GEAR MANIFOLD ASSEMBLY INSTALLED THE LANDING GEAR MANIFOLD ASSEMBLY LANDING GEAR MANIFOLD ASSEMBLY BOND CHECKED GOOD AT .0015 OHM IAW 680A CSPM 20-30-10.PERFORMED LANDING GEAR OPERATIONAL CHECK AND EMERGENCY GEAR EXTENSION CHECK. PERFORMED HYDRAULIC SYSTEM BLEED PROCEDURE. IA W THE CESSNA 680A MM CHAPTER 32-30-20. OPS AND LEAK CHECKS GOOD VERIFIED OPERATIONAL AND LEAK CHECKS

Part: BEARING — LOOSE (NLG STRUT) · airframe 11,969 hrs · 9,658 cycles

AFTER SELECTING GEAR UP AFTER TAKEOFF THE RED GEAR UNLOCK LIGHT REMAINED ON. STAB MISS COMPARE & HYD PRESS LIGHT REMAINED ON. AFTER EXTENDING GEAR IAW CHECKLIST THESE LIGHTS WENT OUT & HAD NORMAL GEAR DOWN INDICATIONS. JACKED ACFT AND PERFORMED A SLOW CYCLE OF THE LANDING GEAR (L/G) AND THEN SEVERAL NORMAL CYCLES WITH NO DEFECTS NOTED. RANG OUT ALL OF THE UPLOCK SWITCHES AND CHECKED THE RIGGING OF ALL OF THE UPLOCK SWITCHES. NO DEFECTS NOTED. MEASURED THE DISTANCE BETWEEN THE BOTTOM OF THE TRUNNION AND THE TOP OF THE FORK. DISTANCE WAS 9.0 INCHES, PER CMM CHAPTER 32-20-01 THE DIMENSION CANNOT EXCEED 9.10 INCHES. CHECKED THE STRUT SERVICE AND FOUND WITHIN LIMITS. MEASURED STRUT AND STRUT MEASURED AT 9.2 INCHES. STRUT IS PAST LIMITS SET IN MAINTENANCE MANUAL AND UPPER BEARING IS COMING LOOSE. REMOVED NOSE LANDING GEAR PISTON ASSEMBLY FROM TRUNNION AND FOUND TOP BEARING ABOUT ONE HALF TURN LOOSE. DISASSEMBLED PISTON ASSEMBLY AND CLEANED ALL COMPONENTS IAW CMM 32-20-01 (REV 8). REASSEMBLED PISTON ASSEMBLY IAW CMM 32-20-01 (REV 8). REINSTALLED NOSE LANDING GEAR STRUT ASSEMBLY INTO TRUNNION IAW CMM 32-20-01 (REV 8). SERVICED NITROGEN AND HYDRAULIC OIL IN STRUT ASSEMBLY TO OPERATING LEVEL AND PRESSURE IAW MM 12-14-00 (REV 39). SWUNG GEAR FOR CLEARANCE CHECKS. CLEARANCE CHECKS GOOD. RED UNSAFE LIGHT DOES NOT ILLUMINATE WHILE GEAR IS IN THE UP POSITION.

Part: UPLOCK SWITCH — OUT OF ADJUST (MLG) · airframe 10,788 hrs · 8,665 cycles

THE RED LANDING GEAR UNLOCK LIGHT REMAINS ILLUMINATED AFTER TAKEOFF WHEN THE LANDING GEAR HANDLE IS PLACED TO THE UP POSITION. THE LIGHT EXTINGUISHES WHEN THE GEAR IS PLACED IN THE DOWN POSITION. FOUND SHOCK STRUT EXTENSION OUT OF LIMITS AND NOSE UPLOCK SWITCH OUT OF ADJUSTMENT DISASSEMBLED STRUT REPLACED BEARING PACK SUPPORT ASSY AND REASSEMBLED STRUT IAW CMM 32-20-01. ADJUSTED UPLOCK SWITCH IAW MM 32-30-05 ALL OPS CHECKED GOOD.

Part: APU — FAILED · airframe 10,339 hrs · 8,349 cycles

DURING PREFLIGHT, HEARD AN EXPLOSIVE BANG FOLLOWED BY A NOISY APU SHUTDOWN AND IMMEDIATE INFLUX OF THICK SMOKE IN THE ACFT'S INTERIOR. REAR BAY HAD NO SMOKE PRESENT, BUT A LINEMAN OBSERVED SPARKS/FLAMES COMING OUT OF THE APU EXHAUST WHEN EXPLOSION OCCURRED. REMOVED AND REPLACED APU IAW MM 49-10-00 LEAK & OPS CHECKED GOOD.

Part: SWITCH — FAILED (MLG) · airframe 10,116 hrs · 8,147 cycles

GEAR UNSAFE LIGHT STAYS ON WITH GEAR HANDLE IN UP POSITION. TROUBLESHOT TO A FAILED AIRSPEED SWITCH. REMOVED AND REPLACED AIRSPEED SWITCH IAW MM 27-40-00. OPS & LEAK CHECKED GOOD.

Part: FRAME — CHAFED (FUSELAGE) · airframe 9,966 hrs · 8,021 cycles

FRAME IN MX BAY ABOVE HYD RESERVOIR IS CHAFED BY LP BLEED AIR VALVE. REMOVED LP BLEED AIR VALVE FOR ACCESS TO FRAME. CUT OUT CHAFED SECTION OF FRAME AT BS 479.5. FABRICATED DOUBLER FROM NEW FRAME SECTION AND INSTALLED. IAW MM 21-11-00.

Part: SKIN — DENTED (FUSELAGE) · airframe 9,966 hrs · 8,021 cycles

DENT DAMAGE SKIN ASSY.

Part: STRUCTURE — DENTED (VERTICAL STAB) · airframe 9,966 hrs · 8,021 cycles

VERTICAL STAB LEADING EDGE HAS SEVERAL DENTS. COLD WORKED DENTS IAW SRM 51-40-03. MINOR REPAIR.

Part: DOOR FRAME — GOUGED (EMERGENCY EXIT) · airframe 9,966 hrs · 8,021 cycles

EMERGENCY EXIT OPENING HAS TWO GOUGES IN LOWER AFT RADIUS OF AIRFRAME. PERFORMED ULTRASONIC THICKNESS CHECK ON GOUGED AREAS ON THE EMERGENCY EXIT AFT LOWER RADIUS NDT UT 01. FOUND NOMINAL THICKNESS TO BE 0.050" THICK AND 0.035" THICK IN THE THINNEST AREA. PERFORMED EDDY CURRENT INSPECTION ON GOUGED AREA NDT ET 01. BLENDED TO REMOVE MINOR GOUGES ON LOWER AFT FRAME RADIUS IAW EA 12-2013-150. MINOR REPAIR.

Part: ACTUATOR — MALFUNCTIONED (LT MLG UPLOCK) · airframe 9,881 hrs · 7,952 cycles

AFTER TAKEOFF AND COMPLETING GEAR UP AND FLAPS CALL, WARNING LIGHT ILLUMINATED DUE TO STAB MISCOMPARE, AND HYD PRESSURE LIGHT ILLUMINATED. RED GEAR UNSAFE LIGHT ILLUMINATED. CREW RAN CHECKLISTS FOR STAB MISCOMPARE AND THEN GEAR. LEFT MAIN DROPPED WHEN HYD CONTROL PRESSURE CIRCUIT BREAKER WAS PULLED. CREW COMPLETED GEAR UNSAFE LIGHT CHECKLIST WITH YAW OF ACFT AND BLOWING DOWN BOTTLE. WITH GEAR DOWN AND LOCKED. CIRCUIT BREAKER WAS RESET AND NORMAL OPS OCCURED. REMOVED LEFT MAIN LANDING GEAR ACTUATOR AND INSTALLED NEW UNIT IN REF W/ CE-560XL MM 32-30-04 OPS CHECK GOOD. LEAK CHECK GOOD. REMOVED LEFT MAIN LANDING GEAR UPLOCK ACTUATOR AND INSTALLED NEW UNIT IAW MM 32-30-05. OPS CHECK GOOD, LEAK CHECKED GOOD.

Part: UPLOCK HOOK — FAILED (MLG) · airframe 9,881 hrs · 7,951 cycles

AFTER TAKEOFF AND SELECTING GEAR UP, RED "UNSAFE" AND AMBER "HYD PRESS" LIGHT REMAINED ILLUMINATED. AFTER APPROX 1-2 MINUTES A LOUD THUMP WAS HEARD FROM THE LT MAIN GEAR. THE "HYD CONTROL" CIRCUIT BREAKER WAS PULLED IAW ABNORMAL CHECKLIST PROCUDURE. WHEN CIRCUIT BREAKER WAS PULLED, THE LT MAIN EXTENDED WITH A LOUD THUMP, AND THE LT GREEN DOWN/LOCKED LIGHT ILLUINATED. RESET THE "HYD CONTROL" CIRCUIT BREAKER AND SELECTED GEAR DOWN, AND RECEIVED THREE GREEN & NO RED. REPLACED LANDING GEAR CONTROL PCB, UPLOCK HOOK ASSY, AND SPRING IAW MM 32-30-05. OPS CHECKED GOOD IAW MM 32-01-00, 32-30-00, & 32-90-10.

Part: UPLOCK SWITCH — FAULTED (NLG) · airframe 9,869 hrs · 7,943 cycles

ON CLIMB OUT, AFTER LANDING GEAR AND FLAPS WERE UP, RECEIVED AN UNSAFE GEAR INDICATION FOLLOWED SHORTLY BY A FLASHING HYD PRESSURE AND STAB MISCOMPARE ANNUNCIATOR. RAN CHECKLISTS, PUT GEAR AND FLAPS DOWN NORMALLY AND RETURNED TO LAND. CONTROL PRESSURES INDICATED THAT STAB WAS MOVING WITH FLAP SELECTION IN BOTH DIRECTIONS. PERFORMED THREE GEAR SWINGS WITH NO DEFECS NOTED. PERFORMED CONTINUITY CHECK OF LT, RT, AND NLG UPLOCK SWITCHES. LT UPLOCK SWITCH IS RESISTIVE AND HAS A "CATCH" OF ACTIVATION PLUNGER. TAPPING ON SWITCH BODY CAUSES LARGE JUMPS IN RESISTANCE. REMOVED LT UPLOCK SWITCH AND WIRING TO J1 CONNECTOR INSTALLED NEW SWITCH. PERFORMED OPS CHECK OF LANDING GEAR. MULTIPLE GEAR SWINGS WITH NO DEFECTS NOTED.

Part: SEAL — LEAKING (MLG) · airframe 9,866 hrs · 7,941 cycles

ON CLIMBOUT , AFTER GEAR AND FLAPS UP, RECEIVED AN UNSAFE GEAR INDICATION, RED LIGHT ON, THREE GREENS OUT, FOLLOWED SHORTLY BY A HYD PRESSURE ANNUNCIATOR AND STAB MISCOMPARE ANNUNCIATOR. STAYED BELOW 200 KNOTS AT ALL TIMES. RAN CHECKLISTS, RETURNED TO LAND AND GEAR AND FLAPS WORKED PROPERLY. ACFT STAB SEEMED TO RETRIM AND ALL ANNUNCIATOR LIGHTS EXTINGUISHED. LANDING WAS NORMAL AT 18,400 POUNDS. NO SIGNS OF LEAKAGE. HYD FLUID VOLUME IS NORMAL. REMOVED THE LT OLEO FOR LEAKING AND REPLACED IAW MM 32-10-00. LUBRICATED UPLOCK ROLLERS IAW MM 12-21-02. LANDING GEAR OPERATIONAL CHECKED GOOD IAW MM 32-01-00. 2-POSITION HORIZONTAL STABILIZER SYS OPS CHECKED GOOD IAW MM 27-40-00.

Part: INDICATION SYS — MALFUNCTIONED (MLG) · airframe 9,161 hrs · 7,363 cycles

GEAR UNLOCK LIGHT REMAINED ILLUMINATED AFTER GEAR RETRACTION SELECTED. HYD PRESS ALSO REMAINED ILLUMINATED. AIRSPEED NEVER EXCEEDED 196 KTS. ONCE GEAR WAS SELECTED TO EXTEND, THE SYS CYCLED NORMALLY (3 GREEN NO RED). PERFORMED HYD EXTENSION AND RETRACTION MANY TIMES IAW MM 32-30-00. NO DEFECTS NOTED. INSPECTED LANDING GEAR UPLOCKS IAW MM 32-30-05. NO DEFECTS NOTED.

Part: ADC — FAILED (NR 2) · airframe 8,981 hrs · 7,208 cycles

CLIMBING THROUGH FL320 FOR FL340 RT SIDE IAS BEGAN CLIMBING RELATIVE TO LT SIDE AND STANDBY IAS. THIS GENERATED AN AMBER "IAS - MISCOMPARE" ANNUNCIATOR ON BOTH PFD'S. THE RT SIDE IAS CONTINUED TO CLIMB AND GENERATED AN OVERSPEED WARNING. R & R NR 2 ADC IAW MM 34-11-08. PERFORMED PITOT-DTATIC LEAK CHECK IAW 14CFR 91.411. TRANSPONDER INTEGRATION CHECK PERFORMED IAW 14CFR 91.413 AND AND ALTITUDE CORRELATION CHECK PERFORMED IAW FAR 43 APPENDIX E. PARA C 09/13/11.

Part: UPLOCK SWITCH — OUT OF ADJUST (MLG) · airframe 8,611 hrs · 6,916 cycles

GEAR UNLOCK LIGHT REMAINED ON AFTER GEAR RETRACTION.( HYD PRESS LIGHT NEVER EXTINGUSHIED , AND THEN THE STAB MIS-COMPARE LIGHT CAME ON , UNABLE TO DETERMINE WHICH DID NOT LOCK. ADJUSTED LT & RT MLG UPLOCK SWITCHES IAW MM 32-30-05, OPS CHECKED GOOD.

Part: UPLOCK SWITCH — FAULTED (MLG) · airframe 7,890 hrs · 6,358 cycles

GEAR RAISED ON TAKEOFF. GREEN LIGHTS WENT OUT BUT RED INTRANSIT REMAINED ON FOLLOWED BY STAB MISCOMPARE. CREW LOWERED GEAR. GEAR LOCKED DOWN . HYD PRESS & STAB MISCOMPARE LIGHTS WENT OUT. FLAPS WERE UP. WE RAISED GEAR AGAIN. ALL GREEN LIGHTS WENT OUT BUT RED IN TRANSIT REMAINED ON. CREW LOWERED GEAR. IT LOCKED DOWN AS NORMAL. PERFORMED HORIZONTAL STAB OPS CHECK IAW MM 27-90-40, OPS CHECK GOOD, R & R NOSE GEAR UPLOCK SWITCH IAW MM 32-61-00. OPS CHECK GOOD.

Part: LANDING GEAR — MALFUNCTIONED · airframe 7,883 hrs · 6,349 cycles

DURING GEAR RETRACTION THE UNLOCK AND HYD PRESS LIGHTS REMAINED ILLUMINATED. THE FOLLOWING GEAR EXTENSION WAS LOUD AND FAST. ON THE PREVIOUS LANDING DURING GEAR EXTENSION THE GEAR SLAMMED DOWN INTO THE DOWN POSITION. THE EXTENSION SPEED WAS APPROX 170 KNOTS. ON POST FLIGHT NO VISIBLE PROBLEMS WERE NOTED. JACKED ACFT AND PERFORMED 25 GEAR SWINGS WITH NO DEFECTS NOTED. INSPECTED UPLOCKS, GEAR ACTUATOR AND ASSOCIATED WIRING. NO DEFECTS NOTED. PERFORMED RESISTANCE CHECKS ON UPLOCK AND DOWNLOAD SWITCHES WITH NO DEFECTS NOTED. HYD RESERVOIR IS FULL. LANDING GEAR SYS, OPS CHECKS GOOD.

Part: BLOWER — SEIZED (CABIN)

FOUND HT030 BREAKER POPPED IN THE "HELL HOLE" WE RESET IT. UPON TURNING ON THE AVIONICS/BATTERY THE FLIGHT DECK FILLED WITH SMOKE. (B)

Part: ACTUATOR — MALFUNCTIONED (MLG) · airframe 6,469 hrs · 5,186 cycles

UPON LOWERING THE LANDING GEAR THE RED (UNSAFE) LIGHT REMAINED ILLUMINATED AND THE LT MAIN GEAR GREEN LIGHT REMAINED OFF. LT GEAR ACTUATOR REPLACED WITH RENTAL UNIT. SYS TESTED IAW MM 32-30-04. ACTUATOR REPLACED DUE TO SUSPECTED INDICATION FAILURE.

Part: LATCH — BINDING (PAX DOOR) · airframe 6,292 hrs · 5,069 cycles

CABIN DOOR WARINING LIGHT CAME ON IN FLIGHT. FOUND CABIN DOOR UPPER AFT LATCH BINDING. ADJUSTED UPPER AFT LATCH AS NEEDED TO FREE UP PIN TO CONTACT DOOR LATCH SWITCH. OPS CHECKED GOOD. ALL WORK COMPLETED I/A/W CESSNA 560XL MM 52-10-00.

Part: SYMBOL GENERATOR — INOPERATIVE (FWD AVIONCS BAY) · airframe 5,875 hrs · 4,717 cycles

RED (PIC) "X" ON PFD/MFD [SYMBOL GENERATOR FAILURE SINGLE]. POST FLIGHT INSPECTION PERFORMED REVEALED NO CIRCUIT BREAKERS POPPED. REMOVED AND INSTALLED I.A.C- -615 IAW CESSNA M.M, 34-25-01. OPS CHECKS GOOD I/A/W CE560 M.M. 34-25-02.

Part: TRIM SYSTEM — STUCK · airframe 5,533 hrs · 4,433 cycles

(P) ON TAKEOFF TRIM STUCK JUST BETWEEN THE TOP LINE AND THE TOP OF THE (T) IN THE TAKEOFF RANGE. WE MANUALLY FORCED IT FREE AND IT BEGAN TO WORK AGAIN. DURING THE RETURN TO THE AIRPORT, THE ELECTRIC TRIM SEEMED TO DRAG IN THE TAKEOFF RANGE. PERIODICALLY MOVING FREELY AND THEN DRAGGING AGAIN.

Part: UNKNOWN — UNKNOWN (SPEED BRAKE) · airframe 5,533 hrs · 4,432 cycles

(NO TAKEOFF) LIGHT ILLUMINATED ON TAKEOFF ROLL-ABORTED-CYCLED STAB, FLAPS AND SPEED BRAKE MANY TIMES, NO CHANGE. PULLED SPEED BRAKE BREAKER AND LIGHT WENT OUT. TROUBLE SHOT SPEED BRAKE SYSTEM. FOUND EXCESSIVE MOISTURE LET SPEED BRAKE DOWN SWITCH CONNECTOR. CLEANED AND DRIED CONNECTOR & REINSTALLED CONNECTOR. TEST RUN LET ENGINE NO TAKE OFF LIGHT EXPIRED & SPEED BRAKE OPS CHECKS GOOD A-W-II 20-10-00 560XL WIRING MANUAL.

Part: WARNING LIGHT — INOPERATIVE · airframe 5,497 hrs · 4,404 cycles

NO TAKEOFF LIGHT ILLUMINATED ON TAKEOFF ROLL. FLAPS, TRIM AND SPEEDBRAKES WERE ALL VERIFIED IN CORRECT POSITION, ABORTED TAKEOFF. (SUPPLEMENTAL 23 MARCH 07) FOUND DURING OP'S CHECK NO TAKEOFF LIGHT WOULD ILLUMINATE BY JUST BUMPING ELEVATOR TRIM WHEEL, REMOVED ELEVATOR TRIM WHEEL AND FOUND EXCESSIVE GREASE AND BALL OF LINT ON TRIM POINTER PROX SWITCH CAUSING INTERMITTEN NO TAKEOFF LIGHT TO ILLUMINATE CLEANED IAW CE560XL MM. CH 27-31-00 AND OPERATIONAL CHECK GOOD.

Part: ENGINE — MAKING METAL (RIGHT) · airframe 5,082 hrs · 4,097 cycles

ON TAKEOFF ROLL, RT OIL FILTER BYPASS ANNUNCIATOR ILLUMINATED. OIL TEMP AND PRESS INDICATIONS NORMAL. ABORTED TAKEOFF JUST AFTER TAKEOFF ROLL STARTED. REMOVED NR 2 ENGINE, INSTALLED REPAIRED ENGINE IAW MM 71-00-00. PERFORMED GROUND OPERATIONAL CHECKS AND LEAK CHECKS GOOD.

Part: POSITION SWITCH — INOPERATIVE (LT STAB) · airframe 3,986 hrs · 3,180 cycles

STAB MIS COMP LIGHT CAME ON AFTER T/O AND FLAPS SELECTED UP CYCLED FLAPS LIGHT WENT OUT AND ACCELERATED TO 250 KNOTS LIGHT CAME BACK ON AGAIN, SLOWED TO 200 KTS. ON GROUND LIGHT COMES ON WHEN FLAPS SELECTED UP, REMOVED AND REPLACED LT STAB POSITION SWITCH P/N CS402-186 S/N 541 WITH NEW SWITCH P/N CS402-1865 S/N 897. REGGIS AND OPS CHECK GOOD. WORK PERFORMED IAW CE560 MM 27-48-00 REF FAS W/O NR 05-1555.

Part: UPLOCK — OUT OF ADJUST (NLG) · airframe 3,288 hrs · 2,652 cycles

AFTER TAKEOFF NOSE GEAR WOULD NOT FULLY RETRACT. CYCLED ON UPLOCK ON & OFF (UNLOCK LIGHT). ADJUSTED NOSE GEAR UPLOCK. OPS CHECK GOOD. WORK DONE IAW CESSNA 560XL MAINTENANCE MANUAL 32-30-05.

Part: LANDING GEAR — MALFUNCTIONED (NLG) · airframe 3,287 hrs · 2,651 cycles

AFTER TAKEOFF NOSE GEAR WOULD NOT GET INTO UPLOCK AND CONTINUED TO CLUNK IN WHEEL WELL. HYDRAULIC PRESSURE LIGHT WOULD NOT GO OUT. ITEM IS UNDER INVESTIGATION.

Part: TUBE — CRACKED (TAILCONE) · airframe 3,190 hrs · 2,576 cycles

AIRCRAFT WAS LEAKING FUEL. TECHNICIAN FOUND A 1.3 INCH CRACK IN -Y- TUBE IN PRESSURE REFUELING SYSTEM. NO EVIDENCE OF DAMAGE TO TUBE ASSY. REPLACED TUBE ASSY, AND LEAK CHECKED GOOD.

Part: UPLOCK SWITCH — FAULTY (RT MLG) · airframe 2,531 hrs · 2,013 cycles

AFTER TAKEOFF AND GEAR WAS SELECTED UP, HYDRAULIC PRESS LIGHT CAME ON, STAB MIS-COMPARE AND GEAR UNLOCK LIGHTS ALSO CAME ON. CORRECTED STAB MIS-COMPARE, HYD PRESS AND WAS GEAR UNLOCK LIGHT STAYED ON. RECYCLED GEAR ONE TIME, WHEN GEAR WAS SELECTED UP GOT SAME LIGHT INDICATION AGAIN. TROUBLESHOT AND FOUND HIGH RESISTANCE SPIKES ON RIGHT MLG UP-LOCK SWITCH WHEN ACTUATED. REMOVED AND REPLACED RT MAIN GEAR UP-LOCK SWITCH, OPS CHECKED GOOD IAW CITATION 560XL MM CHAPTER 32-60-00.

Part: LINE — LEAKING (HYDRAULIC SYS) · airframe 2,504 hrs · 1,991 cycles

UPON GEAR RETRACTION SEVERAL LOUD BANGS WERE HEARD AND FELT, GEAR LIGHTS EXTINGUISHED, HYDRAULIC PRESSURE LIGHT STARTED FLASHING. PULLED C/B AND ANOTHER BANG HEARD AND FELT ALONG WITH RED GEAR UNSAFE LIGHT, RESET C/B AND GEAR EXTENDED NORMALLY. - PERFORMED 15 FAULT FREE GEAR SWING PER CESSNA 560XL MM CHAPTER 32-01-00, NO AIR NOTED IN RETURN SIGHT OF HYDRAULIC POWER CART. INSPECT GEAR INSTALLATIONS AROUND NEW NOSE GEAR UPLOCK HOOK ACTUATOR AND SWITCH, ACCESSED HOOK RIG PIN HOLES AND VERIFIED PROPER HOOK RIGGING PER 32-30-05 NO FAULTS FOUND.

Part: INDICATOR — MALFUNCTIONED (AIRSPEED) · airframe 2,275 hrs · 1,814 cycles

ON TAKEOFF ROLL AT 70 KNOTS, F/O'S AIRSPEED INDICATOR FAILED TO DISPLAY. VISUALLY INSPECTED PITOT TUBES AND STATIC PORTS FOR MOISTURE, DEBRIS, OR ANY BLOCKAGE, NONE FOUND. COMPLETED AIRSPEED CALIBRATION TESTS OF BOTH AIR DATA COMPUTERS AND THE SECONDARY FLIGHT DISPLAY, ALL RESULTS WITHIN SPECIFIED TOLERANCES. ALL WORK COMPLETED IAW CESSNA CITATION 560XL MAINTENANCE MANUAL CHAPTER 34-11-08.

Part: BULB — BURNED OUT (MLG INDICATOR)

DURING FINAL APPROACH BOTH MAIN GEAR INDICATIONS, DID NOT SHOW DOWN AND LOCKED. AIRCRAFT DIVERTED TO SMF AND ACCOMPLISHED A QRH PROCEDURE. NO EMERGENCY WAS DECLARED, BUT CFR WAS ROLLED BY ATC. TROUBLESHOT MLG LIGHTS, FOUND RIGHT AND LEFT MAIN LIGHT BULBS INOP. REPLACED BULBS & PERFORMED GEAR FUNCTIONAL OP'S. CHECK SATISFACTORY RESULTS. WORK PERFORMED IAW CITATION 560XL MM, CHJP 32-60-00 &32-01-00-720. GEAR N2 BOTTLE WAS SERVICED IAW 560XL MM, CHP 12-13-01. THIS ITEM IS STILL UNDER INVESTIGATION.

Part: CABLE — CHAFED (EMR GEAR RELEASE)

CABLE RUN JUST FORWARD OF BATTERY COMPARTMENT, INBOARD SIDE OF HYDRAULIC PRESSURE LINE, RUBBING ON BULKHEAD.STATION FS390.(K)