N334QS

Part: BATTERY — INOPERATIVE (ZONE 200) · airframe 14,988 hrs · 9,923 cycles

ON AIRCRAFT ACCEPTANCE PREFLIGHT, WITH EMER LTS SWITCH ARM POSITION, NO POWER ON THE AIRCRAFT, ALL OVER WING AND ALL AFT INTERIOR EMER EXIT LIGHTS DO NOT ILLUMINATE. REMOVED AND REPLACED ALL FOUR EMERGENCY BATTERIES, IAW CE680 MM 33-50-10. OPS CHECK GOOD, NO DEFECTS NOTED.

Part: DOOR — BINDING (ZONE 800) · airframe 14,795 hrs · 9,776 cycles

THERE IS DIFFICULTY OPENING AND CLOSING THE MAIN CABIN DOOR. WHEN OPENING THE DOOR FROM THE OUTSIDE, THE RELEASE HANDLE OPERATES NORMALLY, HOWEVER THE DOOR REQUIRES MORE FORCE THAN NORMAL TO OPEN. WHEN CLOSING THE DOOR FROM THE OUTSIDE, THE DOOR CLOSES WITH MORE FORCE THAN NORMAL AND THE DOOR HANDLE IS DIFFICULT TO MOVE TO A CLOSED POSITION. WHEN OPENING THE DOOR FROM THE INSIDE, AFTER THE MAIN HANDLE IS RELEASED, THE DOOR REQUIRES MORE THAN NORMAL FORCE TO PUSH OPEN. CORRECTIVE ACTION: TECHS ARRIVED TO AIRCRAFT AND NOTED THE MAIN CABIN DOOR WAS NOT ABLE TO SEAT PROPERLY WHEN ATTEMPING TO LATCH THE PRECATCH. TECHS NOTED THE GAP FROM THE MAIN CABIN DOOR TC FUSELAGE WAS NOT WITHIN TOLERANCE. TECHS PERFORMED THE ADJUSTMENT PROCEDURE OF THE MAIN CABIN DOOR PER CE-680 AMM 52-10-00. TECHS NOTED THE ACOUSTIC SEAL STARTING TO FOLD WHEN ATTEMPTING TO CLOSE THE DOOR AS WELL. TECHS REALIGNED THE MAIN CABIN DOOR ACOUSTIC SEAL PER CE-680 AMM 52-10-10. NO FUTHER DEFECTS NOTED

Part: SPAR — CORRODED (ZONE 500) · airframe 14,787 hrs · 9,770 cycles

BLENDED CORRODED AREAS OF THE LH AND RH AFT WING SPARS LOCATED IN THE MAIN LANDING GEAR WHEEL WELLS, PERFORMED NDT AND REPORTED FOR REPAIR DISPOSITION. CLEANED, TREATED, PRIMED AND TOPCOATED PER NETJETS REQUEST FOR TECHNICAL SERVICES REPORTS.

Part: SPAR — CORRODED (ZONE 100) · airframe 14,787 hrs · 9,770 cycles

BLENDED CORRODED AREAS ON THE LT WING LOWER AFT SPAR CLIP LOCATED IN THE LT MAIN LANDING GEAR WHEEL WELL BEHIND PANEL 730DL, PERFORMED NDT AND REPORTED FOR REPAIR DISPOSITION. CLEANED, TREATED AND PRIMED CORRODED AREAS PER NETJETS REQUEST FOR TECHNICAL SERVICES REPORT.

Part: SKIN — CORRODED (ZONE 500) · airframe 14,787 hrs · 9,770 cycles

MECHANICALLY REMOVED 3 AREAS OF CORROSION FROM LH WING LOWER SKIN, INBOARD OF THE INBOARD FLAP, PERFORMED NDT AND REPORTED FOR REPAIR DISPOSITION. REPAIRED CORROSION BLENDS NETJETS REQUEST FOR TECHNICAL SERVICES BY CLEANING, TREATING AND PRIMING REPAIR AREA.

Part: ANGLE — CORRODED (ZONE 100) · airframe 14,787 hrs · 9,770 cycles

MECHANICALLY REMOVED 1 AREA OF CORROSION LOCATED IN THE RH MLG WHEEL WELL, ON THE AFT SPAR LOWER CLIP INSIDE BAY 720DR, INBOARD AREA PERFORMED NDT AND REPORTED FOR REPAIR DISPOSITION. REPAIRED CORROSION BLEND PER NETJETS ENGINEERING REQUEST FOR TECHNICAL SERVICES BY CLEANING, TREATING AND PRIMING REPAIR AREA.

Part: OXYGEN MASK — UNWANTED DEPLOY (ZONE 200) · airframe 14,758 hrs · 9,750 cycles

MX LEFT THE PASSENGER OXYGEN KNOB TO OFF. WHEN I ROTATED THE PASS OXY KNOB TO AUTO ALL THE MASKS DEPLOYED. REPACKED PASSENGER OXYGEN MASK WORK DONE REF. CESSNA CE-680 AMM 35-20-00. NO FURTHER DEFECTS NOTED. VERIFIED OXYGEN LEVEL IS STILL GOOD.

Part: ASSIST ASSY — FAILED (ZONE 800) · airframe 14,640 hrs · 9,668 cycles

WHILE ATTEMPTING TO CLOSE THE MED, THE AFT (LH SIDE FACING DOOR) SPRING ASSIST MECHANISM FAILED, PREVENTING DOOR OPERATION USING THE INTERIOR HANDLE AND REMAINING CABLE/SPRING. CORRECTIVE ACTION: ARRIVED ON SITE, GAINED ACCESS TO THE AIRCRAFT. GAINED ACCESS TO THE COUNTERBALANCE SPRING. FOUND THE AFT SPRING TO HAVE SNAPPED OFF AND CAUSING THE AFT CABLE TO HAVE NO TENSION. PERFORMED REPLACEMENT OF THE AFT COUNTERBALANCE SPRING. ADJUSTED SPRINGS. PERFORMED OPS CHECK OF THE MAIN ENTRY DOOR WITH NO FAULTS NOTED AT THIS TIME. RESTORED ALL ACCESS GAINED. ALL WORK PERFORMED I.A.W CE680 AMM TASK 52-10-50. SPRING P/N ON & OFF 6911319-202

Part: SPRING — BROKEN (MAIN DOOR) · airframe 13,923 hrs · 9,181 cycles

WHILE CLOSING MAIN DOOR, I HEARD A POP AND THE DOOR FELL OUT OF MY HAND AND SLAMMED DOWN. THE PULLEY INSIDE THE DOOR IS BROKEN. PHOTO WAS TAKEN WITH THE DOOR SLIGHTLY LIFTED UP. REMOVED AND REPLACED CABIN DOOR COUNTERBALANCE SPRING WITH NEW. IAW MM 52-10-50.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,199 hrs · 8,708 cycles

BLENDED CORRODED AREA ON THE AFT SPAR LOWER CLIP NEAR WS 27-29 LOCATED IN THE RH MAIN LANDING GEAR WHEEL WELL, PERFORMED NDT AND REPORTED FOR REPAIR DISPOSITION. REPAIRED AREAS IAW TEXTRON FIELD REPAIR FR-680-0164-11922.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,199 hrs · 8,708 cycles

BLENDED AREAS OF CORROSION ON THE UPPER SURFACE OF INBOARD WING SKINS OF THE RH WING. R&R THE FORWARD DRAG ANGLE (WING-TO-FUSELAGE FAIRING) AND BLENDED ADDITIONAL AREAS. PERFORMED NDT AND SUBMITTED RESULTS FOR REPAIR DISPOSITION. ALL AREAS FOUND ACCEPTABLE WERE TREATED, PRIMED AND TOPCOATED AFTER REPLACING BLENDED FASTENERS PER TEXTRON FIELD REPAIR FR-680-0164-11972 AND TEXTRON STANDARD REPAIR SR-680-ATA57-27245. REPLACED SKIN WITH NEW TEXTRON P/N 6922680-28. FABRICATED AND INSTALLED REPAIR DOUBLER PER TEXTRON FIELD REPAIR FR-680-0164-11972.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,199 hrs · 8,708 cycles

BLENDED CORRODED AREAS ON THE LH INBOARD HORIZONTAL STABILIZER TRAIN EDGE SKINS, PERFORMED NDT, TREATED, PRIMED, AND TOPCOATED BLENDED AREAS REFERENCING NETJETS RFTS-108166.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,199 hrs · 8,708 cycles

BLENDED CORRODED AREAS ON THE UPPER SURFACE OF THE LH UPPER WING SKIN INBOARD TRAILING EDGE SKIN, PERFORMED NDT AND REPORTED RESULTS FOR REPAIR DISPOSITION. TREATED, PRIMED, AND TOPCOATED REPAIR AREAS IAW TEXTRON MEMO DQ39479M1.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,199 hrs · 8,708 cycles

DRILLED OFF 32 NUTPLATES AND MECHANICALLY REMOVED CORROSION FOUND UNDERNEATH ON PANELS 341AL, 341BL, 341CL, 341AR, 341CR, 341DR, 341ER OF THE VERTICAL STABILIZER. PERFORMED NDT, TREATED AND PRIMED REPAIR AREAS, AND INSTALLED NEW NUTPLATES REFERENCING NETJETS RFTS-108159

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 13,199 hrs · 8,708 cycles

BLENDED AREAS OF CORROSION ON THE UPPER SURFACE OF INBOARD WING SKINS OF THE RH WING. R&R THE FORWARD, MIDDLE, AND AFT DRAG ANGLES (WING-TO-FUSELAGE FAIRING) AND BLENDED ADDITIONAL AREAS. PERFORMED NDT AND SUBMITTED RESULTS FOR REPAIR DISPOSITION. ALL AREAS FOUND ACCEPTABLE WERE TREATED, PRIMED AND TOPCOATED AFTER REPLACING BLENDED FASTENERS PER TEXTRON FIELD REPAIR FR-680-0164-11972 AND TEXTRON STANDARD REPAIR SR-680-ATA57-27245.

Part: CONNECTOR — MISINSTALLED · airframe 12,763 hrs · 8,434 cycles

LAV EMERG LIGHT: THE LOWER EXIT SIGN IS NOT ILLUMINATING WHEN THE SYSTEM IS ACTIVATED.//CORRECITVE ACTION// FOUND ACCENT LIGHTING AND EXIT SIGN MOLEX CONNECTORS SWAPPED. INSTALLED MOLEX CONNECTORS IN PROPER POSITION RE-INSTALLED PREVIOUSLY REMOVED COMPONENTS PERFORMED SATSFACTORY OPERATIONAL CHECK IAW CE-680 AMM CHAPTER 33-50-00

Part: BATTERY — DEFECTIVE (ZONE 100) · airframe 12,295 hrs · 8,130 cycles

FOUND DURING PRE-FLIGHT - CABIN EMERG LIGHT: DURING THE INITIAL INSPECTION. THE EMERGENCY LIGHT CHECK RESULTED IN NONE OF THE EMERGENCY LIGHTS COMING ON. THE AIRCRAFT WAS FOUND WITH THE SWITCH IN THE OFF POSITION. THE LIGHTS DO COME ON WITH MAIN SHIP BATTERY POWER BUT OFF AGAIN WITHOUT. // SIGNOFF// REMOVED #1 EMERGENCY BATTERY BATTERY FOR FAILED OPS CHECK P/N CBS28-1 S/N 3061M AND INSTALLED NEW CUSTOMER SUPPLIED BATTERY P/N CBS28-1 S/N 008400 IAW 680A AMM CH 33-50-10 REMOVED # 2 EMERGENCY BATTERY FOR FAILED OPS CHECKP/N CBS28-1 3384M AND INSTALLED CUSTOMER SUPPLIED BATTERY P/N CBS28-1 S/N 008407 IAW 680A AMM CH33-50-10 REMOVED #3 EMERGENCY BATTERY FOR FAILED OPS CHECK P/N CBS28-1 S/N 008412 IAW 680A AMM CH 33-50-10 REMOVED #4 EMERGENCY BATTERY FOR FAILED OPS CHECK P/N CBS28-1 S/N 3939M AND INSTALLED NEW CUSTOMER SUPPLIED BATTERY P/N CBS28-1 S/N 008401 IAW 680A AMM CH 33-50-10 BATTERIES CHARGED. PERFORMED OPS CHECK AND OPS CHECK GOOD

Part: SEAL — LEAKING (CARGO BAY) · airframe 11,935 hrs · 7,868 cycles

CARGO & ACCESSORY COMPARTMENTS: BAGGAGE COMPARTMENT NEEDS INSPECTION. AFTER LANDING, CO-PILOT OPENED BAGGAGE COMPARTMENT DOOR AND REPORTED AN ELECTRICAL BURNING ODOR COMING FROM INSIDE BAGGAGE COMPARTMENT. INSPECTED AND FOUND FOUND LEAK FROM PERI SEALS ON AFT SIDE ECU DUCTING. RESEARCHED ECU CMM. ECU MANUAL 2215460 & 2341316. PLACED SEALS ON ORDER. REMOVED AFT DUCTING REMOVED AND REPLACED 2 SEALS PN 460-200( ITEMS? )AND REMOVED AND REPLACED 1 SEAL PN MS9068-C32. INSTALLED AFT ECU DUCT. OPS AND LEAK CHECK GOOD. RE- INSTALLED BAGGAGE CEILING PANEL. DURING REMOVAL OF ECU /.AFT DUCT FOUND ECU FIBER GLASS EXHAUST DUCT HAS A PIN HOLE. TOOK DIGITAL PHOTOS AN 8END TO MCC. MCC PLACED DUCT AND SEAL ON ORDER.

Part: RECEPTACLE — OUT OF ADJUST (NOSE DOOR LATCH) · airframe 11,230 hrs · 7,397 cycles

DURING CLIMB OUT WE RECIEVED AN AMBER NOSE DOOR OPEN R CAS MESSAGE. AFTER RETURNING TO THE AIRPORT I FOUND THE RIGHT NOSE DOOR RIGHT MACHANICAL LATCH UNLATCHHED. WHEN OPENNING THE DOOR I FOUND THE UPPER SAFETY LATCH DIFFICULT TO UNLOCK. I WAS ABLE TO OPEN THE DOOR BUT WAS UNABLE TO LOCK THE SAFETY LATCH WHEN CLOSING. INSPECTED LATCH PIN, NO DEFECTS NOTED AT THIS TIME ADJUSTED LATCH PIN RECEPTICAL IAW CMM 680 52-40-20 FUNCTIONAL CHECK GOOD

Part: UNKNOWN — ODOR (CABIN) · airframe 10,624 hrs · 7,003 cycles

CABIN ODOR BURNING SMELL - APPROXIMATELY FIVE MINUTES AFTER TAKEOFF, CREW NOTICED A BURNING PLASTIC SMELL. APU WAS OFF AND BLEED AIR ON AS NORMAL. CREW RAN ODOR/SMOKE IN COCKPIT CHECKLIST. RAN APU FOR APPROX 1/2 HOUR, NO BURNING PLASTIC SMELL NOTED. RAN THROUGH ALL ELECTRICAL SYSTEMS, LIGHTS, AVIONICS, CABIN, HEATS, ETC. NO SMELL. RAN BOTH LT AND RT ENGINES. RT ENGINE START, NOTICED A SLIGHT OZONE TYPE ODOR THAT DISSIPATED AFTER SOME RUN TIME. AFTER BRINGING THE RT ENGINE UP TO CRUISE POWER, BRIEFLY SMELLED THIS ODOR AGAIN. NOTIFIED MCC WHO WAS IN AGREEMENT WITH REPLACING THE OZONE CONVERTERS AS A BEST PRECAUTION. RAN ENGINES AND APU AGAIN, NO SMELLS NOTED AT ALL. RAN ALL AVIONICS, CABIN POWER, ETC - NO SMELL. BORESCOPED APU INLET AND BLEED AIR OUTPUT FOR ANY SIGNS OF OIL RESIDUE WITH NONE NOTED. CHECKED GALLEY, AFT BAGGAGE, FWD BAGGAGE. AFT LAV. ALL EASILY ACCESSIBLE ELECTRICAL EQUIPMENT INSIDE THE CABIN WAS CHECKED WITH NO OBVIOUS DEFECTS,. OPS CHECKS OF CABIN SYSTEMS GOOD - NO DEFECTS NOTED AND NO SMELLS. PER MCC, CONTINUED WITH REPLACEMENT OF BOTH LH AND RH OZONE CONVERTERS. OPS CHECKS AND LEAK CHECKS SATISFACTORY WITH NO FURTHER DEFECTS NOTED. WORK PERFORMED IAW MM 21-71-00.

Part: UNKNOWN — ODOR (APU) · airframe 10,266 hrs · 6,733 cycles

IN BOUND STARTED THE APU AT 2500' AT 200 KTS AND AS THE APU WAS POEWERING UP THE #1 MCDU WENT BLANK AND WE HAD AN ELECTRICAL SMELL IN THE COCKPIT. SHUT THE APU DOWN AND THE #1 MCDU CAME BACK 'ON'AND LANDED NORMAL. REPLACED CONDENSER BAG AND PERFORMED OPS CHECKS OF THE APU AND TESTED GENERATION SYSTEM. CHECKS ARE GOOD WITH NO LEAKS OR ABNORMAL SMELLS NOTED.

Part: CONTROL CABLE — BROKEN (NLG STEERING) · airframe 8,220 hrs · 5,401 cycles

AFTER LANDING WAS UNABLE TO STEER ACFT WITH TILLER. TILLER STUCK IN NEUTRAL POSITION. STEERED ACFT WITH RUDDER, BRAKE AND DIFFERENTIAL THRUST. AFTER PARKING TILLER MOVED FREELY BUT DOES NOT TURN. REMOVED AND REPLACED NOSE WHEEL STEERING CONTROL CABLES AND CABLE SEAL PLATES IAW MM 32-50-00. OPS CHECKED GOOD.

Part: SPAR — CORRODED (VERTICAL STAB) · airframe 8,180 hrs · 5,375 cycles

INTERIM REPAIR OF CORROSION LOCATIONS ON VERTICAL STABILIZER AFT SPAR INSTALLATION. REPORT NR S-680-0164/11RD DATED OCT 14, 2016 WITH FAA FORM 8100-9 DATED 10/21/2016.

Part: STRUCTURE — CRACKED (RUDDER) · airframe 8,180 hrs · 5,375 cycles

RUDDER TRIM TAB RODS LIGHTNING HOLE (IN RUDDER) CRACKED. MINOR IN SCOPE.

Part: LINE — LEAKING (HYD SYSTEM) · airframe 5,368 hrs · 3,531 cycles

AFTER RETRACTING LANDING GEAR, RECEIVED AN AMBER CAS MESSAGE FOR HYDRAULIC VOLUME LOW. VOLUME GUAGE SHOWED ZERO. AFTER DOING CHECKLIST RECEIVED AMBER CAS MESSAGE HYD PRESSURE LOW LT & RT. REMOVED AND REPLACED FLEX HOSES TO NOSE WHEEL STEERING UNIT IAW MM 20-10-01. OPS AND LEAK CHECKED. ALL CHECKED GOOD IAW MM 12-12-02.

Part: BRACKET — CRACKED (RUDDER HINGE) · airframe 5,268 hrs

DURING SCHEDULED INSPECTION, FOUND SECOND FROM THE TOP RUDDER HINGE UPPER BRACKET ON THE VERTICAL STABILIZER CRACKED. THE BRACKET WAS CRACKED FROM THE RT OTBD FASTENER TO THE NEXT ONE INBD, WHERE THE BRACKET ATTACHES TO THE VERT STAB AFT SPAR. A SERVICE CONDITION REPORT AND PICTURES HAVE BEEN SENT TO MFG UNDER SDR670301.

Part: TUBE — CRACKED (APU) · airframe 5,268 hrs

DURING SCHEDULED INSPECTION, FOUND APU BLEED AIR TUBE ASSY CRACKED AT THE APU COMPARTMENT ATTACH FLANGE. FLANGE CRACKED 2 TO 3 INCHES WHERE THE FLANGE IS WELDED TO THE TUBE ASSY.

Part: BRAKE ASSY — MALFUNCTIONED · airframe 8,910 hrs · 7,238 cycles

DURING TAXI AFTER LANDING BOTH BRAKE PEDALS WENT TO THE FLOOR. ANTI-SKID INOP ANNUNCIATOR AND POWER BRAKE LOW PRESS ANNUNCIATOR BOTH CAME ON, WAS ABLE TO STOP BY PUMPING THE BRAKES. TROUBLESHOT SYSTEM FOUND AIR IN SYS. BLED ANTISKID BRAKE SYS ON 8/03/07. LET AIRCRAFT SET DURING PAINT PROCESS. BLED ANTISKID BRAKE SYS. AGAIN ON 8/08/07. ALL OPS CK GOOD IAW CESSNA 560 MM 32-42-00

Part: LIGHT — INOPERATIVE (MLG INDICATOR) · airframe 8,889 hrs · 7,221 cycles

ON APP TO BTV ER PUT THE GEAR HANDLE DOWN AND ONLY GOT 2 GREEN AND NO RED. DISCONTINUED THE APP WENT OVER THE LAKE, RAN THE CHECKLIST. DID THE ROTARY TEST NO LIGHT. NO HORN BELOW 150 KTS FLAP PAST 15 DEG. DECLARED THE EMERGENCY, DID A FLYBY OF THE TOWER CAME BACK AND LANDED. [07-23-07] R & R LDG SAFE & UNLOCK LIGHTS P/N 327 IAW CE560 MM 32-60-00. OPS CHECK GOOD. OPS CHECKED THE LANDING GEAR IAW TASK 32-01-00-711

Part: PRESSURE SWITCH — INOPERATIVE (BRAKES) · airframe 8,843 hrs · 7,188 cycles

ON LANDING BRAKE PRESS LOW AND ANTISKID INOP LIGHTS ILLUMINATED WITH NO BRAKES. LIGHTS WENT OUT AND NORMAL BRAKING RETURNED AFTER PUMPING BRAKES. TESTED ANTISKID SYSTEM WITH NO FAULTS. REPLACED KNOO2 RELAY P/N: M83536/9-024 + LOW PRESSURE SWITCH. CHECKED SYSTEM + BLED BRAKES. OPERATIONAL CHECKS GOOD IAW MM CH. 32-42-00. OLD P/N: 9912163-1. OLD S/N: 2279. NEW P/N: 9912163-1. NEW S/N: 3285. CORRECTED BY: (DK). DATE CORRECTED: 6/29/07. CERT. TYPE AND NR: CNQ8918C.

Part: PIVOT — LACK OF LUBE (MLG) · airframe 8,720 hrs · 7,095 cycles

ON DEPARTURE, GEAR SELECTED UP AND GEAR UNSAFE LIGHT REMAINED ILLUMINATED ALONG WITH HYD PRESS LIGHT ON FOR APPROX 1.5 MINS. NOSE WHEEL FINALLY CAME UP LIGHTS WENT OUT, LOUD NOISE FROM NOSE WHEEL AREA HEARD. LUBED LT MLG PIVOT BOLT IAW AC MM CHAPTER 32-10-00. OPS CHECKED LAND GEAR NO DEFECTS SERVICED HYDRAULIC SYSTEM IAW AC MM 12-12-01.

Part: MASTER CYLINDER — MALFUNCTIONED (BRAKES) · airframe 7,335 hrs · 5,937 cycles

CAPT LT BRAKE INTERMITTENTLY MUSHY WHEN BRAKE APPLIED. BRAKE OPERATING NORMALLY FOR APPROX 2 SECONDS. AFTER THAT TIME, BRAKE PRESSURE DROP. REMOVED AND REPLACED PILOT LT BRAKE MASTER CYLINDER IAW CE 560 M/M CHAP 32-42-02. OPS CHECKED GOOD.

Part: ANTI-SKID SYS — MALFUNCTIONED (MLG BRAKES) · airframe 7,282 hrs · 5,886 cycles

PILOTS LEFT BRAKE IS MUSHY AND HAS TO BE PUMPED UP TO OPERATE. CO-PILOTS RIGHT BRAKE DOES THE SAME THING. DRAINED AND FLUSHED RESERVIOR AND BRAKE LINES. BLED ANTI-SKID BRAKE SYSTEM WITH SKYDROL 500-B-4.

Part: LIMIT SWITCH — MALFUNCTIONED (THRUST REVERSER) · airframe 6,500 hrs · 5,289 cycles

DURING FLIGHT THE LT THRUST REVERSER LIGHT CAME ON, ACCOMPLISHED AIR TURNBACK TO PBI. REMOVED RIGHT AND LEFT DEPLOY SWITCHES FROM LEFT THRUST REVERSER, INSTALLED NEW SWITCHES. ALL WORK DONE IAW CITATION 560 WIRING MANUAL CHAPTER 78-30-01. PERFORMED OPERATIONAL CHECK AND FLIGHT, SYSTEM OPS CHECKED GOOD.

Part: UNLOCK SWITCH — OUT OF ADJUST (THRUST REVERSER) · airframe 6,500 hrs · 5,288 cycles

LEFT ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED DURING FLIGHT. ADJUSTED LT THRUST REVERSER UNLOCK SWITCHES, RAN ENGINE AND THE LT THRUST REVERSER OPS CHECKED GOOD. ALL WORK PERFORMED IAW CE560 MM 78-30-00.

Part: POSITION SWITCH — FAILED (LT MLG) · airframe 5,615 hrs · 4,568 cycles

LEFT MAIN LANDING GEAR WOULD NOT COME UP DURING GEAR RETRACTION. TROUBLESHOT SYSTEM FOUND TO BE INTERMITTENT LEFT MAIN GEAR UPLOCK SWITCH. REMOVED AND REPLACED SWITCH WITH NEW, OPERATIONAL CHECK GOOD, ALL WORK DONE IAW CITATION 560 MM CHAPTER 32-61-00.