N525QS

Part: LANDING — CORRODED (ZONE 500) · airframe 8,146 hrs · 5,336 cycles

CORROSION ON FUEL PANEL LANDS

Part: SKIN — DEBONDED (WING) · airframe 7,834 hrs · 5,135 cycles

DEBONDING OF LH/RH WING UPPER SKIN ASSEMBLY AT STRINGER ENDS. ACCOMPLISHED FR-680A-0063-14759 REV - DATED 2-13-2025 AND FAA FORM 8110-3 DATED 02/13/2025; FIELD REPAIR - LOCAL DISBOND AND CONTOUR DEVIATIONS, LH/RH WING, UPPER SKIN BOND ASSEMBLIES, BETWEEN CWS 117.60 AND CWS 280.10.

Part: SKIN — GOUGED (ZONE 200) · airframe 7,834 hrs · 5,135 cycles

GOUGE, TAILCONE, AFT UPPER MIDDLE SKIN. ACCOMPLISHED FR-680A-0063-14787 REV - DATED 2-20-25 AND FAA FORM 8110-3 DATED 02/20/2025; FIELD REPAIR - GOUGE, TAILCONE, AFT UPPER MIDDLE SKIN, FS 605.00 AND WL 169.00.

Part: DOOR — BINDING (MAIN) · airframe 7,398 hrs · 4,848 cycles

MAIN DOOR: UPON ARRIVIAL IN PDX WE WERE UNABLE TO OPEN THE MAIN CABIN DOOR. WE HAD TO HAVE THE GROUND CREW OPEN DOOR FROM OUTSIDE TO LET US OUT. ONCE OPEN THE HANDLE AND PINS SEEM TO WORK NORNALLY, HAD THE FIRST OFFICER CLOSE DOOR WHILE I REMAINED OUTSIDE, ONCE AGAIN HE WAS UNABLE TO OPEN THE DOOR AFTER MULTIPLE ATTEMPTS AND I HAD TO OPEN IT FROM THE OUTSIDE. CORRECTIVE ACTION: REMOVED DAMAGED MAIN ENTRANCE DOOR WIRE BUNDLE, PN 8469153-1, AND REPLACED WITH NEW PN 8469153-1. MAINTENANCE PERFORMED IN REFERENCE TO CESSNA 680A AMM 52-10-00. REMOVED MALFUNCTIONING CED MONITOR PCB ASSY (POSITION NC105), PN 7468101-20 SN 34389381-2, AND REPLACED WITH NEW CED MONITOR PCB, PN 7468101-20 SN 34389379-2. MAINTENANCE PERFORM1ID IN REFERENCE TO CESSNA 680A AMM 24-60-40. OPS CHECK GOOD AT THIS TIME.

Part: BATTERY — FAILED (ZONE 200) · airframe 7,311 hrs · 4,793 cycles

EMER LIGHTS FAILED TEST DURING POWER ON CHECKLIST. PROBABLY A SWITCH ISSUE. THEY DO NOT ILLUMINATE WITH SWITCH IN ARM POSITION AND NO DC POWER AS REQUIRED PER THE CHECKLIST. THEY DO ILLUMINATE WHEN SELECTED ON AS EXPECTED. 30 MINUTE CHARGE OF BATTERIES PRODUCED THE SAME RESULT. CORRECTIVE ACTION: REMOVED INOP EMERGENCY BATTERY PACKS #1-4 AND INSTALLED NETJETS SUPPLIED REPAIRED BATTERY PACKS #1-4. PERFORMED EMERGENCY LIGHTING BATTERY PACK POST MAINTENANCE CHECKS AND EMERGENCY LIGHTING OPS CHECKS. OPS CHECKS SUCCESSFUL. NO DEFECTS NOTED. ALL WORK DONE IAW ALL WORK DONE IAW CE-680A AMM 33-50-06 AND IAW CE-680 A IMM 25-20-21 AND AMM 33-50-00 AND PILOTS OPERATIONAL HANDBOOK PNS OFF: #1 CBS28-1 SN: 000215 #2 CBS28-1 SN: 006505 #3 CBS28-1 SN: 5587M #4 CBS28-1 SN:006875 PNS ON: #1CBS28-1 SN: 4082M #2CBS28-1 SN: 3584M #3 CBS28-1 SN: 5234M #4 CBS28-1 SN: 4681M

Part: LIGHT — NONE (CABIN) · airframe 7,311 hrs · 4,793 cycles

FLOOR EMERG EXIT LIGHT: FLOOR EMERGENCY LIGHTS ARE INOP CORRECTIVE ACTION: PERFORMED EMERGENCY LIGHT OPERATIONAL CHECK WITH SATISFACTORY RESULT NO OTHER DEFECTS NOTED ALL WORK DONE IN REF CE680A AMM 33-50-00.

Part: UNKNOWN — UNKNOWN (UNKNOWN) · airframe 6,769 hrs · 4,466 cycles

TOTAL, LT, & RT EICAS INDS UNRELIABLE. TOTAL SHOWED A RAPID 300 LBS INCREASE IN QTY DURING INITIAL LT BANK TURN AFTER TAKEOFF, FOLLOWED BY A RAPID DECREASE IN QTY IN FLT EXCEEDING ACTUAL FUEL FLOW. ACCOMP QRH AC1 FOR FUEL LEAK, CANNOT CONFIRM. FMS FUEL INDS NORMAL & MISCOMPARED WITH EICAS. AFTER SEVERAL ATTEMPTS PERFORMED ARES DOWNLOAD, UPLOADED INFO TO MCC & MANUFACTURER IAW AMM 31-33-00, CHKD FOR PRESENCE OF WATER, DRAINED SUMPS. NO LARGE AMOUNTS OF TRAPPED WATER FOUND, ONLY TRACE CONTAMINANTS, APPROX. 1 TABLESPOON OF WATER TAKEN FROM AIRP!.ANE. IAW AMM 28-00·10. MANUFACTURER STATED WAS NORMAL CONSIDERING AMOUNT OF PITCH, ROLL THAT THE ACFT WAS DOING. CONSULTED W/MCC, MCC ELECTS TO CLEAR & SIGN OFF.

Part: WIRE HARNESS — DAMAGED (MAIN DOOR) · airframe 6,761 hrs · 4,460 cycles

AFTER PARKING WITH APU RUNNING, TRIED OPENING DOOR. DOOR HANDLE WOULD NOT PULL UP TO OPEN. SHUT APU OFF & POWERED DOWN ACFT, STILL WOULD NOT OPEN. GROUND PERSON OPENED DOOR OUTSIDE. TRIED DOOR AGAIN, SAME RESULTS. DUPLICATED DISCREPANCY, REF WIRING DIAGRAM & CHECKED WIRING FOR CONTINUITY FROM THRESHOLD TO SWITCH ON INNER HANDLE FOUND WIRING CHECKED GOOD, SWITCH & GROUND CHECKED GOOD REMOVED PCB NZ105 & METERED SYS FROM PCB CONNECTOR TO GROUND, CHECKED GOOD. R & R DOOR MONITOR PCB, OPS CHECKED FAILED. INSTALLED ORIG PCB. R & R THRESHOLD WIRING HARNESS ASSY, OPS CHECKED GOOD IAW MM 52-10-00 & WDM 52-10-01.

Part: NONE — NONE (ZONE 400) · airframe 5,116 hrs · 3,359 cycles

LEFT ENGINE PYLON SKIN DAMAGE (WAVY). ACCOMPLISHED TEXTRON AVIATION ENGINEERING LETTER DQ35118M1 DATED JUNE 10, 2022; 680A-0063 (N525QS) LEFT ENGINE PYLON SKIN DAMAGE (WAVY).

Part: NONE — NONE (ZONE 400) · airframe 5,116 hrs · 3,359 cycles

RIGHT ENGINE PYLON PANEL (P/N 7412311-4 MISMATCH). ACCOMPLISHED TEXTRON AVIATION LETTER DQ35192M1 DATED JUNE 15, 2022; 680A-0063 (N525QS) RIGHT ENGINE PYLON PANEL (P/N 7412311-4 MISMATCH).

Part: UNKNOWN — ODOR (COCKPIT) · airframe 4,694 hrs · 3,112 cycles

COCKPIT ODOR: AFTER TAKEOFF WHILE CLIMBING THERE WAS A NOTICEABLE ENVIRONMENTAL ODOR. THE ODOR BECAME MORE INTENSE. NO SMOKE WAS NOTICED DURING THE EVENT. THE ODOR WAS MORE CONSISTENT WITH A HOT ELECTRICAL MOTOR OVERHEATING BUT NOT BURNING WIRES. INSPECTED AIRCRAFT, NO ODOR NOTED.

Part: SCREEN — CRACKED (ZONE 200) · airframe 4,694 hrs · 3,111 cycles

2 INCH CRACK IN APU INLET SCREEN. TEXTRON AVIATION ENGINEERING MEMO DQ33270, DATED JANUARY 22, 2022, HAS GRANTED A FLIGHT EXTENSION FOR 100 FLIGHT HOURS OR UNTIL FEBRUARY 28, 2022, WHICHEVER OCCURS FIRST. INSPECTION OF THE SCREEN PER DQ33270 HAS VERIFIED THAT THE SCREEN IS IN ACCEPTABLE CONDITION FOR CONTINUED OPERATION.

Part: COWL DOOR — NONE (ZONE 400) · airframe 4,694 hrs · 3,111 cycles

RIGHT ENGINE UPPER COWL DOOR DAMAGE. ACCOMPLISHED TEXTRON AVIATION ENGINEERING REPAIR LETTER DQ33101M1 DATED JANUARY 10, 2022; 680A-0063 (N525QS) RIGHT ENGINE UPPER COWL DOOR DAMAGE.

Part: AXLE — CHIPPED (ZONE 700) · airframe 4,694 hrs · 3,111 cycles

RH MLG AXLE CHIPPED. REPAIR IAW TEXTRON AVIATION ENGINEERING REPAIR LETTER DQ33177 DATED: JANUARY 14, 2022, 680A-0063 N525QS REPAIR RECOMMENDATION.

Part: COWL DOOR — PUNCTURED (ZONE 400) · airframe 4,694 hrs · 3,111 cycles

LH ENGINE UPPER COWL DOOR DAMAGE. TEXTRON AVIATION ENGINEERING REPAIR LETTER DQ33099M1 DATED: JANUARY 10, 2022, 680A-0063 (N525QS) LEFT ENGINE UPPER COWL DOOR DAMAGE.

Part: PRESSURE SWITCH — DEFECTIVE (THRUST REVERSER) · airframe 4,067 hrs · 2,675 cycles

T/R ARMED L AMBER CAS: L TR ARMED AMBER CASS MESSAGE IN FLIGHT AT FL 390 WHILE CLIMBING TO FL 430. POWERED AIRCRAFT NOTING NO TR CAS MESSAGES ACTIVE. APPLIED HYDRAULIC POWER AND PERFORMED SEVERAL OPERATIONAL CHECKS OF BOTH LEFT AND RIGHT TR'S WITH NO DEFECTS OR CAS MESSAGES NOTED. IT WAS DETERMINED TR ARM PRESSURE SWITCH ST039 HAD REPORTED ACTIVATING IN FLIGHT. GAINED ACCESS TO PRESSURE SWITCH ST039 AND INSPECTED SWITCH AND CONNECTOR WITH NO DEFECTS OR MOISTURE PRESENT. NOTED DURING INSPECTIONS LOW PRESSURE SWITCH PTO85 WET WITH HYDRAULIC FLUID. BASE OF SWITCH DRY. SUSPECT LEAKING LOW PRESSURE SWITCH PT085. CONTACTED MCC AND WAS REQUESTED TO REPLACE SUSPECT FAULTY TR ARM PRESSURE SWITCH AND LEAKING TR LOW PRESSURE SWITCH PT085. REMOVED SUSPECT FAULTY LH TR ARM PRESSURE SWITCH AND INSTALLED NEW LH TR ARM PRESSURE SWITCH USING NEW PACKING IAW MM 29-10-17. REMOVED LEAKING LH TR LOW PRESSURE SWITCH AND INSTALLED NEW LH TR LOW PRESSURE SWITCH USING NEW PACKING IAW MM 29-10-17. HOOKED UP HYDRAULIC MULE, POWERED AIRCRAFT AND PERFORMED UNLOADING, RELIEF AND THRUST REVERSER CONTROL FILTER MANIFOLD SWITCH POST-MAINTENANCE CHECKS IAW MM 29-10-17 WITH NO DEFECTS NOTED. REMOVED HYDRAULIC MULE, SERVICED HYDRAULIC SYSTEM IAW MM 12-10-30. POWERED DOWN AIRCRAFT AS REQUIRED. PERFORMED FINAL ENGINE RUNS WITH ADDITIONAL TR OPS CHECKS TO ENSURE NO FURTHER ISSUES, NO DISCREPANCIES NOTED AT THIS TIME.

Part: FITTING — DAMAGED (CARGO DOOR) · airframe 3,972 hrs · 2,607 cycles

BAGGAGE DOOR SNUBBER FITTING ATTACH HOLES OVERSIZED. ACCOMPLISHED ENGINEERING LETTER DQ29846M1 - DATED APRIL 30, 2021; 680A-0063 (525QS) BAGGAGE DOOR SNUBBER FITTING ATTACH HOLES OVERSIZED.

Part: FITTING — DAMAGED (CARGO DOOR) · airframe 3,972 hrs · 2,607 cycles

BAGGAGE DOOR SNUBBER FITTING ATTACH HOLES OVERSIZED. ACCOMPLISHED TEXTRON AVIATION ENGINEERING LETTER DQ29846M1 - DATED APRIL 30, 2021; 680A-0063 (525QS) BAGGAGE DOOR SNUBBER FITTING ATTACH HOLES OVERSIZED.

Part: COVER — CORRODED (ACCESSORY GB)

REPAIR OF R/H ENGINE ACCESSORY GEARBOX AFT COVER. ACCOMPLISHED PRATT AND WHITNEY DEVIATION LETTER DAA2021-359-PW306D1-CN0124, ACCESSORY GEAR BOX TOUCH UP REPAIR DATED 29APR2021. CRM CASE: PWC-177824-Y4R2.

Part: FRAME — CRACKED (NLG WW) · airframe 3,139 hrs · 2,090 cycles

CRACKS, NWW, DOUBLER, FRAME AND WEB, FS 75. ACCOMPLISHED FIELD REPAIR FR-680A-0063-7977 REV - DATED MAY 21, 2020 AND FAA FORM 8100-9 DATED 5/21/2020; FIELD REPAIR - CRACKS, NWW, DOUBLER, FRAME AND WEB, FS 75.

Part: COFFEEMAKER — MALFUNCTIONED (GALLEY) · airframe 2,364 hrs · 1,566 cycles

10 MINUTES AFTER DEPARTURE AND LEVEL AT 13,000' WE NOTICED AN ELECTRICAL BURNING SMELL. NO VISIBLE SMOKE, BUT ENOUGH ODOR TO CLEARLY IDENTIFY AN ISSUE. THE ODOR BECAME PRESENT IMMEDIATELY AND SEEMED TO BE MORE PRONOUNCED NEAR THE COCKPIT THAN THE REAR OF THE CABIN. IT DID NOT PROGRESS TO A WORSE CONDITION FROM FIRST DETECTION. """"CORRECTIVE ACTION""""NO DEFECTS NOTED. PERFORMED APU GROUND RUN. FOUND COFFEE MAKER CONTROL PANEL TO HAVE A HOT ELECTRICAL SMELL. REMOVED AND REPLACED COFFEE MAKER IN GALLEY. PERFORMED SEVERAL OPS CHECKS OF COFFEE MAKER AND LEFT ON FOR SEVERAL HOURS. NO DEFECTS OR ODORS NOTED.

Part: PCB — FAILED (APU) · airframe 2,003 hrs · 1,338 cycles

APU FAILED TO START. REMOVED AND REPLACED APU STARTER/GEN. AS REQUIRED REF. CE-680A MM.M. 80-10-25. REMOVED AND REPLACED APU ECU IAW CE-680A MM 49-60-05-4. INITIALLY APU STARTER/GEN. PASSED CHECKS. UPON ENG SHUTDOWN APU DID NOT PICK UP LOAD. RESET APU GEN. IT PICKED UP THE LOAD INITIALLY THEN DROPPED IT AGAIN 0V 0A. APU GEN WILL NOT RESET OR SUPPORT ELECTRICAL LOAD. APU AND APU STARTER GENERATOR STARTED AND OPERATED NORMAL. UPON STARTING FIRST (L/H) ENGINE, NOTICED APU GENERATOR ICON ON ELECTRICAL PAGE SHOWED A GREEN ICON AND 28 VOLTS AND 375 AMPS. APPROXIMATELY 15-30 SECONDS INTO ENGINE START, APU GENERATOR ICON TURNED WHITE AND SHOWED 1 VOLT AND 0 AMPS. APU GENERATOR WOULD NOT RESET OR SUPPORT ELECTRICAL LOAD. APU STARTER GENERATOR OPERATED NORMAL UNTIL ENGINE START. DURING TROUBLESHOOTING, FOUND PCB NZ204 (APU CONTROL) TO BE DAMAGED. REMOVED AND REPLACED APU CONTROL PCB (NZ204) P/N: 6968012-13 IAW CE680A M/M 24-60-35. REMOVED AND REPLACED APU STARTER GENERATOR IAW CE-680A AMM OPS CHECKS GOOD.

Part: CONTROL MODULE — MALFUNCTIONED (MLG) · airframe 166 hrs · 100 cycles

GEAR DISAGREE LT, RT, AND NOSE, MESSAGE APPEARED WHEN GEAR WAS SELECTED DOWN. RAN QRH AND HAD TO BLOWDOWN GEAR. REMOVED AND REPLACED THE MLG CONTROL MODULE IAW MM 32-30-30. OPS CHECKED GOOD.

Part: SEAL — DEFECTIVE (NLG STRUT) · airframe 2,364 hrs · 1,565 cycles

ALL LANDING GEAR RETRACTION DID NOT RETRACT - AFTER LIFTOFF, WOW MISCOMPARE CAS MESSAGE ILLUMINATED AND LANDING GEAR WOULD NOT RETRACT. ""CORRECTIVE ACTION""""FOUND NLG WOULD NOT EXTEND ENOUGH TO GIVE WEIGHT OFF WHEELS INDICATION DISASSEMBLED NOSE LANDING GEAR STRUT, REPLACED SEALS, ASSEMBLED AND SERVICED STRUT. REF CMM 32-20-01 MM 12-10-52. PERFORMED GEAR SWING TO ENSURE ALL INDICATIONS ARE NORMAL. OPS CHECK GOOD WOW MISCOMPARE CAS DID NOT ILLUMINATE.

Part: LINE — CRACKED (GALLEY DRAIN)

80 INCH LONG GALLEY DRAIN LINE WAS FOUND CRACKED FROM WATER EXPANSION. THIS LINE RUNS FROM GALLEY ALONG LOWER SIDE PLATES INSIDE CABIN AREA. ATTACH POINTS FOR LINE ONLY ALLOW A LEVEL INSTALLATION UNTIL JUST BEFORE IT ANGLES BELOW THE CABIN. THE CRACK WAS IN THE LEVEL AREA.

Part: DUCT — LEAKING (CABIN PRESSURE)

FLT 68798 - AIRCRAFT WILL NOT PRESSURIZE IN FLIGHT WITH MAIN AIR VALVE, BUT WILL WITH AUX VALVE. FOUND CABIN AIR FLOW DUCT LEAKING. REMOVED AND REPLACED DUCT. (X)