# Service difficulty reports: N664QS A list on [N664QS](https://openairdocs.org/aircraft/N664QS.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR DXTA2026082409374](https://openairdocs.org/sdr/DXTA2026082409374.md): Pressure Switch · faulted · Aug 21, 2026 · N664QS · Cessna 680A · Aircraft Fuel Distribution System > AFTER TAKEOFF WITH TAKEOFF THRUST, AFTER CLIMBING THROUGH FRA AND RETRACTING THE FLAPS TO ZERO AT APPROXIMATELY 500 FEET AGL, WE RECEIVED A RED "ENGINE VIBRATION L," CAST MESSAGE ILLUMINATED ON OUR PFD'S. LEVELING OFF AT 5000 FEET MSL, THE CAST MESSAGE EXTINGU - [SDR DXTA2026012906709](https://openairdocs.org/sdr/DXTA2026012906709.md): Handle · binding · Jan 28, 2026 · N664QS · Cessna 680A · Passenger/Crew Doors > MAIN CABIN DOOR HANDLE WILL NOT MOVE AFTER CLOSING DOOR. WE ARRIVED TO THIS AIRCRAFT AFTER OT WAS IN MAINTENANCE. WHEN CLOSING THE DOOR FROM THE INSIDE, THE HANDLE WOULD NOT MOVE. UPON FURTHER INSPECTION OF THE DOOR PINS, WE NOTICED A LOWER AFT PIN IS MISALIGN - [SDR DXTA2025010201803](https://openairdocs.org/sdr/DXTA2025010201803.md): Pushrod · out of adjust · Jan 2, 2025 · N664QS · Cessna 680A · Passenger/Crew Doors > MAIN DOOR: WHEN ATTEMPTING TO CLOSE THE MAIN CABIN DOOR, THE LOCKING HANDLE WILL NOT ENGAGE. IT CAN'T BE MOVED. CORRECTIVE ACTION: ADJUSTED LOCKING PIN PUSHRODS. REINSTALLED MED STEPS. OPS CHECK GOOD. IAW CE680A AMM 52-10-05. - [SDR DXTA2024121901551](https://openairdocs.org/sdr/DXTA2024121901551.md): Steering Sys · faulted · Dec 15, 2024 · N664QS · Cessna 680A · Landing Gear Steering System > AFTER LANDING WENT TO TAXI OFF RUNWAY & TILLER WOULD NOT TURN LT AT ALL, TILLER HAD MINIMAL CONTROL AUTHORITY TO THE RIGHT. INSPECTED FOR DAMAGE AND NONE FOUND. ACCESSED NWS CONTROL VALVE AND NO DAMAGES NOTED. ACTUATED NWS & FOUND WHEN THE TILLER IS MOVED, EIT - [SDR DXTA2024101000802](https://openairdocs.org/sdr/DXTA2024101000802.md): Light · inoperative · Oct 9, 2024 · N664QS · Cessna 680A · Emergency Lighting > LAV EXIT SIGN/LIGHT: EMERGENCY PATH LIGHT UNDER LAV SEAT IS INOP. BULB WORKS BUT CONNECTION IS INCONSISTENT. CORRECTIVE ACTION; REMOVED AND REPLACED EMERGENCY PATH LIGHT UNDER LAV SEAT. OPS CHECK GOOD IAW CE-680A MM 33-50-00. PN/SN OFF PN CLE327-01-30 SN 23900 - [SDR DXTA2023101798170](https://openairdocs.org/sdr/DXTA2023101798170.md): Unknown · unknown · Oct 16, 2023 · N664QS · Cessna 680A · Passenger/Crew Doors > MAIN DOOR: CABIN DOOR OPEN CAS AMBER INFLIGHT. WITH CHECK DOOR CAS. AMBER. PERFORMED INITIAL OPS CHECK OF MED. OPS CHECK FAILED. DOOR OPEN CAS REMAINED ON AFTER CLOSING DOOR. COMPLIED WITHCABIN DOOR RESET IAW CE-680A POH. REPEATED OPS CHECK OF CABIN DOOR IAW - [SDR DXTA2023061588790](https://openairdocs.org/sdr/DXTA2023061588790.md): Unknown · unknown · Jun 15, 2023 · N664QS · Cessna 680A · Passenger/Crew Doors > THE PART OF THE MAIN CABIN DOOR HANDRAIL THAT ATTACHES TO THE AIRFRAME AT THE AFT SIDE OF THE DOOR OPENING HAS BECOME CRACKED AND BROKEN.//CORRECITVE ACTION//INSTALLED RETAINING RING REF CE680A AMM 52-10-40. REPLACED MED TOP STEP HHINGES IAW CE680A AMM 52-10-5 - [SDR DXTA2023032182970](https://openairdocs.org/sdr/DXTA2023032182970.md): Pcb · defective · Mar 20, 2023 · N664QS · Cessna 680A · Passenger/Crew Doors > MAIN DOOR: AT FLIGHT LEVEL 320, THE CHECK DOOR AND CABIN DOOR OPEN EICAS MESSAGE DISPLAYED. COMPLIED WITH THE CHECKLIST. GAINED ACCESS TO L/H PCB ENCLOSURE,REMOVED PCB NC105 P/N 7468101-17 1 S/N 0408, INSTALLED CUSTOMER SUPPLIED NEW PCB NC105, P/N 7468101- - [SDR DXTA2023030682120](https://openairdocs.org/sdr/DXTA2023030682120.md): None · none · Mar 5, 2023 · N664QS · Cessna 680A · Emergency Lighting > COCKPIT EMERG LIGHT: THE COCKPIT FLOOD LIGHT IS 100% OUT. MOVING THE RHEOSTAT HAS NO EFFECT. WE CYCLED THE AIRCRAFT POWER AND IT HAD NO EFFECT. *** CORRECTIVE ACTION *** POWERED UP AND VERIFIED OVERHEAD COCKPIT FLOOD LIGHT IS INOPREATIVE. VERIFIED ALL C/B'S A - [SDR DXTA2023021780620](https://openairdocs.org/sdr/DXTA2023021780620.md): Window · damaged · Feb 16, 2023 · N664QS · Cessna 680A · Flight Compartment Windows > FIRST OFFICER COCKPIT WINDOW: COPILOT RIGHT SIDE WINDOW CRACKED. PERFORMED CHECKLIST,CIRCUIT BREAKER PULLED PER CHECKLIST. // SIGNOFF// REMOVED CRACKED RH COCKPIT SIDE WINDOW PN: 9914809-2 SN: 18215H4634, INSTALLED CUSTOMER SUPPLIED NEW CO-PILOTS SIDE WINDOW P - [SDR DXTA2023020680010](https://openairdocs.org/sdr/DXTA2023020680010.md): Not Reported · not reported · Feb 5, 2023 · N664QS · Cessna 680A · Passenger/Crew Doors > MAIN DOOR: CABIN DOOR OPEN AND CHECK DOORS CAS MSGS DURING CRUISE FLIGHT. RAN QRH CHECKLIST. CABIN DOOR REMAINED SECURE AND CAS MSGS REMAINED ON THRU BLOCK-IN. RESOLUTION: CONNECTED BATTERIES AND VERIFIED REPORTED FAULT. INSPECTED DOOR LATCHES AND DOOR HARNES - [SDR DXTA2022100371420](https://openairdocs.org/sdr/DXTA2022100371420.md): Handle · dirty · Oct 1, 2022 · N664QS · Cessna 680A · Passenger/Crew Doors > MAIN DOOR: MAIN CABIN DOOR HANDLE WILL NOT MOVE TO THE CLOSED POSITION. DOOR IS OPEN. VERIFIED DISCREPANCY. CLEANED AND LUBES MED LOCK PINS. PERFORMED SUCCESSFUL OPS CHECK AT HIS TIME. REF CE-680A MM 52-10-00. - [SDR DXTA2022021756840](https://openairdocs.org/sdr/DXTA2022021756840.md): Window · fire · Feb 16, 2022 · N664QS · Cessna 680A · Flight Compartment Windows > CAPTAIN COCKPIT WINDOW: THE VERY LEFT COCKPIT WINDOW CAUGHT ON FIRE AT THE TOP EDGE. AN ELECTRICAL FIRE OCCURRED SHORTLY AFTER TAKEOFF WHICH MELTED THE INSULATION ON THE TOP OF THE WINDOW AND CREATED A FLAME. WINDOW CRACKED ALL AROUND THE TOP FRONT AND BACK E - [SDR DXTA2021111551910](https://openairdocs.org/sdr/DXTA2021111551910.md): None · none · Nov 14, 2021 · N664QS · Cessna 680A · Landing Gear Retraction/Extension System > LEFT MLG LANDING GEAR RETRACTION: UPON RAISING GEAR HANDLE, MAIN LANDING GEAR WERE SHUTTERING LOUD MULTIPLE TIMES WITH UNSAFE GEAR INDICATION. CHECKLIST WAS FOLLOWED TO SAFE GEAR EXTENSION AND BLOW DOWN WAS NOT USED. // SIGNOFF// CHECKED ADJUSTMENT OF THE NLG - [SDR DXTA202010054170](https://openairdocs.org/sdr/DXTA202010054170.md): Wire Harness · broken · Oct 5, 2020 · N664QS · Cessna 680A · Door System Wiring > UPON CLOSING CABIN DOOR COULD NOT GET "CABIN DOOR OPEN" AMBER CAS TO GO OUT. CHECK DOORS CAS TURNED WHITE. TRIED AOB PROCEDURE AND USING OVERRIDE WITH THE SAME RESULT. SIGN OFF. INSPECTED DOOR WIRING NOTING HARNESS APPEARED TO BE PINCHING IN THE UPPER STEP - [SDR DXTA2020100504170](https://openairdocs.org/sdr/DXTA2020100504170.md): Warning Light · illuminated · Oct 5, 2020 · N664QS · Cessna 680A · Door Warning System > UPON CLOSING CABIN DOOR COULD NOT GET "CABIN DOOR OPEN" AMBER CAS TO GO OUT. "CHECK DOORS" CAS TURNED WHITE. TRIED AOB PROCEDURE AND USING OVERRIDE WITH THE SAME RESULT. ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE n_number = 'N664QS' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N664QS/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.