N593QS

Part: STRUCTURE — MECHANIC ERROR (ZONE 100) · airframe 7,062 hrs · 4,628 cycles

DURING DOWN-JACKING, THE TAIL STAND WAS LEFT IN PLACE CAUSING DAMAGE TO THE AIRCRAFT REMOVED DAMAGED AFT CANTED BULKHEAD & REPLACED WITH NEW CANTED BULKHEAD IAW SRM 51-40-05. REMOVED & INSTALLED NEW RT AFT SKIN & THREE STRINGERS IAW SRM 51-40-05. REMOVED & INSTALLED NEW LT AFT SKIN & THREE STRINGERS. IAW SRM 51-40-05. R & R APU FUEL SUPPLY LINE WITH NEW IAW MM 20-10-75.

Part: PANEL — CORRODED (LAVATORY) · airframe 6,708 hrs · 4,409 cycles

TOILET SEAT PANEL CORRODED

Part: BATTERY — FAILED (ZONE 200) · airframe 6,274 hrs · 4,111 cycles

EMERGENCY LIGHTING: EMER LIGHTS ASSOCIATED WITH THE #3 BATTERY PACK FAIL TO ILLUMINATE DURING TEST FOLLOWING 30MINS OF CHARGING PER QRH PROCEDURE TAB AB6 REMOVED #3 EMERGENCY LIGHTING BATTERY PACK P/N: CBS28-1 S/N: 007120. REPLACED BY A REPAIRED EMERGENCY LIGHTING BATTERY PACK P/N: CBS28-1 S/N: 007271 PROVIDED BY ALL WORK DONE IAW CE-680A AMM 33-50-06.

Part: LIGHT — INOPERATIVE (SEAT3) · airframe 6,219 hrs · 4,077 cycles

EMERGENCY TOE KICK LIGHT UNDER SEAT 3 IS INOP. EMERGENCY READING LIGHT ABOVE SEAT 3 IS INOP. BOTH LIGHTS ARE ASSOCIATED WITH THE NUMBER TWO BATTERY PACK. GOT TO THE A/C AND POWERED ON AND ALLOWED A/C TO FULLY BOOT UP AS REQ WITH GPU POWER. APPLIED THE EMERGENCY LIGHTS TO ON AND VERIFIED THE EMERGENCY TOE KICK LIGHT UNDER SEAT 3, AND EMERGENCY READING LIGHT ABOVE SEAT 3 IS INOP. BOTH LIGHTS ARE ASSOCIATED WITH THE NUMBER TWO BATTERY PACK. C/W EMERGENCY LIGHTING POWER SUPPLY BATTERY EXERCISE PROCEDURE IAW TC NO TC-FLT-33-1001 REV2/20OCT2022. T/S LED TO A FAILED #2 EMERGENCY LIGHTING BATTERY. REMOVED ASSOCIATED PANELS AND #3 PASS SEAT TO GAIN ACCESS TO THE #2 EMERGENCY LIGHT BATTERY. R&R #2 EMERGENCY LIGHTING BATTERY IAW CE 680A AMM 33-50-06.WITH ALL CONNECTORS IN PLACE, POWERED ON THE A/C WITH GPU AND CHARGED THE BATTERIES FOR AN HOUR. C/W WITH THE OPS. OPS CHECK GOOD WITH THE EMERGENCY TOE KICK LIGHT UNDER SEAT 3,AND EMERGENCY READING LIGHT ABOVE SEAT 3 WORKING AS REQ. REINSTALLED THE #3 PASS. SEAT IAW CE·680A IMM 25-20-21, OPS CHECK OF THE SEAT GOOD. ALLOWED ANOTHER HOUR FOR THE BATTERY TO FULLY RECHARGE BACK UP, POWERED OFF THE A/C AND RESET THE A/C BACK TO ORIGINAL CONFIG,

Part: PIN — BINDING (DOOR) · airframe 6,174 hrs · 4,039 cycles

DOOR DIFFICULT TO OPEN AND CLOSE. BOTTOM AFT PIN REMAINS EXTENDED OUT OF HOLE WHEN DOOR IS OPENED, WILL NOT FULLY RETRACT INTO HOLE. HAD DOOR OPEN LIGHT & CHECK DOOR LIGHT WITH CABIN DOOR CLOSED. FOLLOWED AFM PROCEDURE, LIGHT EXTINGUISHED, BUT ONLY AFTER PUSHING DOOR PIN IN WITH FINGER. INSPECTED MED FOR DEFECTS. NO DEFECTS, INSPECTED DOOR PINS & FOUND DOOR PINS SLLGHTLY STICKING. CLEANED & LUBRICATED DOOR PINS IAW AMM 12-20·40, INTERROGATED CMC & FOUND NOTHING PERTAINING TO DOOR ISSUES AS STATED, CHKD CONNECTOR PLUG, NO DEFECTS. MANIPULTED WIRING HARNESS & COULDN`T DUPLICATE SQUAWK. OPS CHKD GOOD, NO DEFECTS. REINSTALLED UPPER STEP & WATER BARRIER. RETURNED ACFT TO NORMAL CONFIG IAW AMM 52-10-00

Part: BATTERY — FAULTED (EMERGENCY LIGHTS) · airframe 5,821 hrs · 3,802 cycles

UPON PREFLIGHT WHILE CONDUCTING EMERGENCY LIGHT TEST FOUND EXIT SIGNS FLANKING MAIN CABIN DOOR NOT ILLUMINATED WHEN SWITCH PLACED IN ON. WHEN SWITCH PLACED IN ARM ALL OTHER LIGHTS EXTINGUISH. REMOVED AND REPLACED EMERGENCY LIGHTING BATTERY PACK ONE IAW MM35-50-06. OPS CK GOOD.

Part: GENERATOR — DEFECTIVE (DC) · airframe 5,630 hrs · 3,666 cycles

ON TAXI OUT RECEIVED DC GEN OFF L AMBER CAS MESSAGE. RAN QRH, AND MESSAGE CLEARED. APPROXIMATELY 10 MINUTES LATER, STILL TAXING, THE MESSAGE RETURNED. RAN THE QRH ONE MORE TIME WITH THE MESSAGE CLEARING AND NORMAL INDICATIONS. AFTER TAKE OFF, AT APPROXIMATELY 1500 FEET THE MESSAGE RETURNED FOR A THIRD TIME WITH A GROWLING SOUND COMING FROM THE ENGINE. THIS AIRCRAFT ALSO HAD THE APU MEL'D. STARTED LEFT ENGINE AND GENERATOR KICKED OFF AND YOU CAN FEEL THE GENERATOR VIBRATING. ORDERED NEW STARTER GENERATOR. 1-29-24 DG JH REMOVED AND REPLACED LEFT ENGINE STARTER GENERATOR WITH A OVERHAULED UNIT AND OPERATIONAL CHECKS WERE GOOD IAW MM 80-10-20.

Part: MOTOR — DEFECTIVE (ZONE 800) · airframe 4,956 hrs · 3,207 cycles

CABIN DOOR OPEN AMBER CAS: DURING INITIAL CLIMB OUT, CHECK DOORS CAS AND CABIN DOOR OPEN CAS ILLUMINATED SIMULTANEOUSLY. THE LIGHTS REMAINED ON, AND AFTER SHUTDOWN, THE MAIN CABIN DOOR WAS VISUALLY CONFIRMED LOCKED. THE DOOR WAS THEN OPENED, AND RESECURED, YET THE TWO DOOR CAS MEASAGES REMAINED ILLUMINATED. ACTUATED BOTH DOOR AND LOCKED BOTH CAS MSG WERE STILL PRESENT WHEN DOOR WAS FULLY LOCKED. PERFORMED AREA DOWNLOAD WITH REF TO CE680A MM 31-33-00. PERFORMED MAIN DOOR ENTRY DOOR RESET WITH REF TO CE680A PILOTS PROCEDURE HANDBOOK ONCE RESET WAS ACCOMPLISHED CYCLED DOOR. IN LOCK POSITION NO CAS MEG WERE PRESENT. DOOR OPENING AND CLOSING NORMALLY. A LOUD NOISE WAS HEARD REPEATLY FROM DOOR MOTOR DURING OPENING CYCLE OF DOOR. FURTHER TS SINCE THIS IS A REPEAT WRITEUP TEAM 680 RESPONDED THEY FOUND SOLENOID PAWL SWITCH S6 WAS SEEN TO BE RESPONSIBLE FOR BOTH CAS MESSAGES CABIN DOOR OPEN AND CHECK DOOR REQUESTED MCC TO ORDER SWITCH. AS FAR AS NOISE COMING FROM DOOR WHILE OPENING, DISENGAGED CLUTCH TO DOOR TO ELININATE MOTOR EQUATION. WITH MOTOR DISENGAGED NOISE WAS NOT HEARD DURING OPENING CYCLE INFORMED MCC AND SUGGESTED ORDERING A MOTOR SINCE INTERNAL BRAKES SEEMED TO BE RUBBING MOTOR ON ORDER REMOVED MED INNER SKIN WITH REF TO CE680A MM 52-10-14 GAIN ACCESS TO VENT DOOR PROXY SWITCH. CHECKED MEASUREMENT BETWEEN SWITCH AND TARGET. FOUND DISTANCE TO BE EXCESSIVE REAAJUSTED WITH REF TO AMM 52-70-10. SWITCH IS NOW AT PROPER DISTANCE BEGAN RINGING OUT WIRING STARTED AT VENT DOOR SWITCH TO CABIN DOOR CONFIRMED PIN 1 4 AND 3 WERE GOOD DURING WIRE CHECKS BETWEEN PC048 AND 0C028 FOUND WIRES H & K TO BE READING ERRONEOUSLY WHILE MOVING THE HARNESS CONTACTED MCC AND INFORMED THEM OF FINDINGS SUGGESTED ORDING WIRING HARNESS FOR CABIN DOOR THRESHOLD REMOVED AND REPLACED CABIN THRESHHOLD HARNESS ASSY. PERFORMED SEVEREAL OPERATIONAL CHECK OF DOOR AND OPS CHECK WAS GOOD WITH NEED A FINAL OPS CHECK AFTER ALL CLOSEUP IS DONE WORK PERFORMED IAW IMM 25-20-09, 52-10-50 AND WIRING MANUAL, FINAL INSPECTIONED INSTALLATION OF HARNESS NO DEFECTS NOTED. REINSTALLED INNER SKIN WITH REF TO AMM 52-10-00 NO FAULTS NOTED. NOISE IS NO LONGER PRESENT RESTORED AIRCRAFT TO ORIGINAL CONFIG REMOVED MED INNER SKIN WITH REF TO CE680 MM 52-10-14. REMOVED LIFT ARM WITH REF AMM 52-15-10 REMOVED MED INNER SKIN WITH REF TO CE680A MM 52-10-14 REMOVED LIFT ARM WITH REF AMM 52-15-10 REMOVED DOOR LIFT LINK AND CABINET PANEL AND ACCESSORIES PERFORMED ELECTRICAL BONDING TEST . REMOVED AND REPLACED MOTOR WITH REF TO AMM 52-15-05 OPS CHECK GOOD. ORIGINAL SUBMISSION DATE: 7/11/2023.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 4,956 hrs · 3,205 cycles

MAIN DOOR: DURING CLIMB OUT AMBER CABIN DOOR OPEN AND CHECK DOORS CAS CAME ON. COMPLETED CHECKLIST AND RETURNED TO DEPARTURE AIRPORT. AMBER DOOR WARNING LIGHT ON CABIN DOOR ALSO CAME ON WHILE DOOR WAS STILL CLOSED. RESOLUTION: PERFORMED OPS CHECK OF THE MAIN CABIN DOOR AND NOTED THAT THE CABIN DOOR OPEN CAS DID NOT EXTINGUISH. TECH LOOKED INTO THE CDMS AND FOUND THAT THE SECURING PAWL DOOR SWITCH (SC007) WAS INDICATING THAT THE HANDLE WAS NOT SECURED AND THE REST OF THE PROXIMITY SWITCHES WERE INDICATING DOSED. TECH REMOVED THE STAIRS AND INTERNAL DOSE OUT PANEL. TECH PERFORMED THE CABIN DOOR RESET PROCEDURE AND IT CLEARED THE CABIN DOOR OPEN FAULT WHILE OPERATING. TECH OPERATED THE DOOR ABOUT 15 TIMES WITH NO DEFECTS NOTED. TECH VERIFIED THE RIGGING OF THE SC007 SWITCH WAS 0,11" WITH THE LIMITS BEING 0.10" +/- 0.01". MCC ELECTS TO SIGN THIS ITEM OFF DUE TO NO PRIOR HISTORY. TECH RESTORED ACCESS TO THE CABIN DOOR STAIRS. OPS TEST OF THE CABIN DOOR WARNING SYSTEM SATISFACTORY. REFERENCE: 680A AMM 52-70-10, 52-10-50 AND 680A MAIN ENTRY CABIN DOOR MAY FAIL TO CLOSE USING NORMAL CLOSING PROCEDURES DATED 10-01-2019 FROM SUPPORT.CESSNA.C:OM.

Part: PCB — DEFECTIVE · airframe 4,545 hrs · 2,935 cycles

CABIN DOOR OPEN AMBER CAS: CABIN DOOR OPEN AND CHECK DOORS EICAS MESSAGE. PERFORMED CHECK LIST AND MESSAGE CLEARED. THIS HAPPENED SEVERAL TIMES.//CORRECTIVE ACTION// REMOVED AND REPLACED CED MONITOR PCB. COMPLIED WITH 10 CYCLES OPS CHECK OF THE MCD GOOD AND NO FAULTS PRESENT AT THIS TIME. PN OFF 7468101-17 SN OFF 0148 PN ON 7468101-17 SN ON 31399250-3

Part: NONE — NONE · airframe 3,620 hrs · 2,347 cycles

EMERGENCY LIGHTING: WITH EMERGENCY LIGHT SWITCH OFF AND AIRCRAFT DEPOWERED. THE EMERGENCY LIGHTS OVER THE MAIN CABIN DOOR (WHITE EXIT SIGN), 2 RED LIGHTS AT THE LOWER MAIN CABIN DOOR AND THE LIGHT UNDER THE SEAT ACROSS FROM THE MAIN CABIN DOOR (WHITE FLOOR LIGHT) STAY ON. //SIGNOFF// GAINED ACCESS TO THE NO.1 EMERGENCY LIGHTING INERTIAL SWITCH. RE-SET THE INERTIAL SWITCH AND THE EMERGENCY LIGHTS EXTINGUISHED. RAN THE APU AND CHARGED THE EMERGENCY LIGHTING BATTERIES. PERFORMED OPERATIONAL CHECK OF THE NO.1 INERTIAL SWITCH AND ALL OPERATION IS NORMAL. PERFORMED OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM AND ALL OPERATION IS NORMAL AT THIS TIME. ALL WORK WAS PERFORMED IAW CE-680A AMM CHAPTER 33-50-00.

Part: COWLING — DELAMINATED (LEFT) · airframe 3,133 hrs · 2,020 cycles

LH ENGINE UPPER COWLING IS DELAMINATED FROM B/A LEAKS. TEXTRON AVIATION STRUCTURES ENGINEERING DOCUMENT DQ30702M1 DATED JULY 16, 2021.

Part: COVER — CORRODED (ACCESSORY G/B)

CORROSION ON THE REAR COVER OF THE ACCESSORY GEAR BOX.

Part: COVER — CORRODED (ACCESSORY G/B)

CORROSION ON THE REAR COVER OF THE ACCESSORY GEAR BOX.

Part: DOUBLER — CRACKED (NLG WW) · airframe 2,566 hrs · 1,668 cycles

CRACK DAMAGE, NOSE LANDING GEAR WHEEL WELL (NWW), FRAME, WEB, AND DOUBLERS, FS 75. ACCOMPLISHED TEXTRON AVIATION FIELD REPAIR SR-680A-ATA53-25890 REV- DATED JUNE 1, 2020 AND 8100-9 DATED 6/1/2020; STANDARD REPAIR - CRACK DAMAGE, NOSE LANDING GEAR WHEEL WELL (NWW), FRAME, WEB, AND DOUBLERS, FS 75.

Part: SKIN — CHAFED (ZONE 100) · airframe 2,566 hrs · 1,668 cycles

LOWER SKIN CHAFE FROM ANTI-ICE CROSS-FLOW VALVE. ACCOMPLISHED TEXTRON AVIATION STANDARD REPAIR SR-680A-ATA53-22175 REV - DATED 7/19/2019; STANDARD REPAIR - 680A ALL S/N LWR SKIN CHAFE FROM ANTI-ICE CROSS-FLOW VALVE.

Part: I/O MODULE — DEFECTIVE (CABIN PRESSURE) · airframe 2,564 hrs · 1,667 cycles

WHILE IN CRUISE AT FLIGHT LEVEL 40000 THE ICAS CABIN PRESSURIZATION FAULT DISPLAYED. WENT TO MANUAL AS PER THE CHECK LIST AND THE CABIN ALTITUDE WAS UNCONTROLLABLE.///SIGN-OFF///REMOVED AND REPLACED RIGHT ENGINE AND AIRFRAME I/O UNIT (GEA7100 #3) IAW CE680A AMM 31-30-00, 31-40-15 AND 42-10-01. OPS CHECK GOOD.