# Service difficulty reports: N591QS

A list on [N591QS](https://openairdocs.org/aircraft/N591QS.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

- [SDR DXTA2026060108256](https://openairdocs.org/sdr/DXTA2026060108256.md): Generator · faulted · May 28, 2026 · N591QS · Cessna 680A · Engine (Turbine/Turboprop)
  > DURING CRUISE ENG CONTROL FAULT R CASS MESSAGE ILLUMINATED. RAN QRH AND MESSAGE CLEARED. WHEN STARTING DESCENT FELT A VIBRATION THAT CHANGED WITH POWER SETTING CHANGES. OBSERVED THAT THE RIGHT ENGINE POWER CHANGES LAGGED BEHIND THE LT ENGINE BY 2-5%. REMOVED
- [SDR DXTA2025071404189](https://openairdocs.org/sdr/DXTA2025071404189.md): Panel · loose · Jul 9, 2025 · N591QS · Cessna 680A · Aerodynamic Fairings
  > INFLIGHT VIBRATION FELT DURING DESCENT PHASES OF FLT AT HIGH SPEEDS AND DESCENT PITCH ATTITUDES ONLY (HIGHEST AROUND 290 & DECREASES UNTIL NEGLIGABLE BELOW 225KNOTS). VIBRATION SEEMS TO CORRELATE WITH SPEED & SEEMS UNRELATED TO ENGINES/ THRUST. IT ONLY OCCURS
- [SDR 2025FA0000381](https://openairdocs.org/sdr/2025FA0000381.md): Rib · corroded · May 30, 2025 · N591QS · Cessna 680A · Fuselage Miscellaneous Structure
  > CORROSION ON PANEL ATTACH FLANGES NUT-PLATES.
- [SDR DXTA2025051303429](https://openairdocs.org/sdr/DXTA2025051303429.md): Brake · smoke · May 10, 2025 · N591QS · Cessna 680A · Landing Gear Brake System
  > RIGHT MAIN BRAKE SMOKING AFTER LANDING. COULD FEEL VIBRATION BEFORE ENTERING RAMP. SET BRAKES FOR 1HR & OBSERVED NO LEAKS FROM RT MLG & NO LEAKS AROUND THE PUCKS ON #3 OR #4 MLG. WITH AUX HYD PSI ON, ACTUATED BRAKES & BRAKE PUCKS ENGAGED & RELEASED. PERFORME
- [SDR DXTA2025011301927](https://openairdocs.org/sdr/DXTA2025011301927.md): Screw · loose · Jan 11, 2025 · N591QS · Cessna 680A · Hydraulic Power System
  > HYDRAULIC SYSTEM PRESSURE INDICATION: DURING DESCENT INTO IAD AT 29,000', WE NOTICED THAT HYDRAULIC PRESSURE BEGAN TO FLUCTUATE AND WOULD DROP TO ZERO "---". THIS AROUND 1848Z. NO CAS INDICATION AND NO LOSS OF SYSTEMS. CORRECTIVE ACTION: TIGHTENED GROUND ATTAC
- [SDR DXTR2024082501](https://openairdocs.org/sdr/DXTR2024082501.md): Fitting · corroded · Aug 16, 2024 · N591QS · Cessna 680A · Fuselage, Landing Gear Attach Fittings
  > NLG ACTUATOR AFT ATTACHMENT CASTING IS CORRODED, STARTED REMOVAL OF CORROSION ON NLG ACTUATOR AFT ATTACHMENT FITTING IAW SRM 51-10-01.CONTINUED REMOVAL OF CORROSION ON NLG ACTUATOR AFT ATTACHMENT FITTING IAW SRM 51-10-01. CONTINUED REMOVAL OF CORROSION ON NLG
- [SDR DXTA2024042911625](https://openairdocs.org/sdr/DXTA2024042911625.md): Battery Pack · inoperative · Apr 28, 2024 · N591QS · Cessna 680A · Emergency Lighting
  > EMER LIGHT OVER SEAT 3 IS INOP. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY. OPS CHECK GOOD. IAW AMM 33-50-06.
- [SDR DXTA2024030511083](https://openairdocs.org/sdr/DXTA2024030511083.md): Power Supply · faulted · Mar 3, 2024 · N591QS · Cessna 680A · Emergency Lighting
  > IN ARM POSITION NO EMER LIGHTS WORK AT ALL. IN ON POSITION ALL LIGHTS WORK EXCEPT THE UNDER SEAT LIGHT AT SEAT 10 AND THE LOWER MAIN CABIN DOOR LIGHTS BOTH FORE AND AFT. SUSPECTED NUMBER 1 PACK FAILURE. PERFORMED THE CHARGING PROCEDURE ONCE YESTERDAY WITH SUCC
- [SDR DXTA2024030511060](https://openairdocs.org/sdr/DXTA2024030511060.md): Sign · inoperative · Mar 1, 2024 · N591QS · Cessna 680A · Emergency Lighting
  > EMERG EXIT SIGN/LIGHT: REPEAT WRITEUP... ON PREFLIGHT, WHEN THE EMER LTS SWITCH IS PUT IN THE ARM POSITION, THE EMERGENCY LIGHTING SYSTEM DOES NOT ILLUMINATE. THE PREFLIGHT CHECKLISTS WORK BUT TBJS IS SUPPOSED TO ACCOMPLISH WITHOUT POWER ENERGIZED. WE CALL TEA
- [SDR DXTA2024022811000](https://openairdocs.org/sdr/DXTA2024022811000.md): Battery · damaged · Feb 24, 2024 · N591QS · Cessna 680A · Emergency Lighting
  > CABIN EMERG LIGHT: EMER LTS DO NOT ILLUMINATE WITH BOTH BATTERIES OFF AND NO GENERATORS RUNNING AND EMER LTS SWITCH ON. REMOVED AND REPLACED DRAINED #4 EMERGENCY BATTERY PACK IAW CE-680A MM 33-50-06.
- [SDR DXTA2024011210594](https://openairdocs.org/sdr/DXTA2024011210594.md): Battery · faulted · Jan 12, 2024 · N591QS · Cessna 680A · Emergency Lighting
  > ON PREFLIGHT WITH AIRCRAFT BATTERIES OFF AND EMERGENCY EXIT LIGHTS SELECTED TO ARM, THE EMERGENCY LIGHTS FOR OVERHEADSEAT 7 AND EVACUATION PATH LIGHTS FOR SEATS 5 AND 8 DO NOT ILLUMINATE. IF YOU SELECT AIRCRAFT BATTERIES ON AND EMER LIGHTS ON, THOSE LIGHTS NO
- [SDR DXTA2023122810453](https://openairdocs.org/sdr/DXTA2023122810453.md): Battery · faulted · Dec 27, 2023 · N591QS · Cessna 680A · Emergency Lighting
  > EMER LIGHTS OFF AMBER CAS: AFTER PERFORMING THE RECHARGE PROCEDURE ON THE EMERGENCY LIGHTS (2 CHARGES) AND WITH BATTERIES CONNECTED BUT OFF AND GENS OFF, EMER LTS WILL NOT COME ON IN "ON" POSITION. IN "ARM" POSITION EMER LTS OPERATE EXCEPT EXIT SIGN OVER SEAT
- [SDR DXTA2023102598770](https://openairdocs.org/sdr/DXTA2023102598770.md): Unknown · unknown · Oct 25, 2023 · N591QS · Cessna 680A · Emergency Lighting
  > CABIN EMERG LIGHT: WHEN PLACING THE EMERG LIGHT SWITCH TO ARM, NONE OF THE EMERGENCY CABIN LIGHTS COME ON. PERFORMED THE EMERG LIGHT OPERATIONAL TEST IAW 33-50-00 FOLLOWING COMPLETION OF TC-FLT-33-1001 REV 2 20OCT2022 OPERATIONAL NO FURTHER DEFECTS NOTED.
- [SDR DXTA2023072791790](https://openairdocs.org/sdr/DXTA2023072791790.md): Valve · faulted · Jul 26, 2023 · N591QS · Cessna 680A · Air Conditioning System
  > 5-10 MINUTES AFTER ENGINE SHUTDOWN, WITH THE APU RUNNING AND THE APU BLEED AIR ON, THE COCKPIT STARTED FILLING WITH SMOKE. THE SMOKE DID NOT SMELL ELECTRICAL. I IMMEDIATELY SHUTDOWN THE APU AND RAN THE SHUTDOWN CHECKLIST. AT THAT TIME THE SMOKE DISSIPATED. A F
- [SDR DXTA2021111551770](https://openairdocs.org/sdr/DXTA2021111551770.md): None · none · Nov 12, 2021 · N591QS · Cessna 680A · Passenger/Crew Doors
  > MAIN DOOR HANDLE: CAN NOT OPEN DOOR FROM INSIDE THE PLANE. DOOR CAN BE OPENED AND SHUT FROM OUTSIDE. WHEN YOU PRESS RED BUTTON ON SILVER HANDLE YOU USUALLY HERE A CLICK BUT YOU DON'T HERE ANYTHING. // SIGNOFF//FOUND BROKEN SPLICE ON WIRE GOING TO THE MED INNER
- [SDR DXTA022520213860](https://openairdocs.org/sdr/DXTA022520213860.md): Valve · defective · Feb 24, 2021 · N591QS · Cessna 680A · Fuel Transfer Valve
  > FUEL DISTRIBUTION: FUELED WITH 10200 AND HAD A LEFT SIDE HEAVY 500LB IMBALANCE. CORRECTED IMBALANCE PRIOR TO TAKEOFF, REACHED CRUISE AND CROSSFED TO CORRECT THE ~300LB IMBALANCE WE HAD ON TAKE OFF. ONCE CROSSFEED WAS COMPLETE A/C WAS BALANCED TO +60LBS TO TH
- [SDR DXTA2021011804617](https://openairdocs.org/sdr/DXTA2021011804617.md): Wire · broken · Jan 18, 2021 · N591QS · Cessna 680A · Door System Wiring
  > UNABLE TO OPEN THE MAIN CABIN DOOR FROM INSIDE THE CABIN. WE TRIED WITH APU POWER ON AND OFF. DOOR WILL CLOSE WITH THE MOTOR NORMALLY AND LOCK. GROUND CREW WAS ABLE TO OPEN THE DOOR FROM THE OUTSIDE. FOUND BROKEN WIRE AT AC017 SPLICE. REPLACED SPLICE. OP
- [SDR 2020F00326](https://openairdocs.org/sdr/2020F00326.md): Doubler · cracked · Jun 29, 2020 · N591QS · Cessna 680A · Fuselage Main, Structure
  > CRACK DAMAGE, NOSE LANDING GEAR WHEEL WELL (NWW), FRAME, WEB, AND DOUBLERS, FS 75. ACCOMPLISHED A FIELD REPAIR SR-680A-ATA53-25890 REV- DATED JUNE 1, 2020 AND 8100-9. STANDARD REPAIR - CRACK DAMAGE, NOSE LANDING GEAR WHEEL WELL (NWW), FRAME, WEB, AND DOUBLERS
- [SDR 2020FA0000026](https://openairdocs.org/sdr/2020FA0000026.md): Cap · eroded · Jan 9, 2020 · N591QS · Cessna 680A · Horizontal Stabilizer Structure
  > RH HORIZONTAL STAB TIP IS ERODED INTO THE COMPOSITE. REFERENCE TEXTRON AVIATION ENGINEERING MEMO DQ24284M1 DATED JANUARY 7, 2020.
- [SDR DXTA2019031402159](https://openairdocs.org/sdr/DXTA2019031402159.md): Connector · dirty · Mar 13, 2019 · N591QS · Cessna 680A · Landing Gear System Wiring
  > RIGHT MLG LANDING GEAR RETRACTION DID NOT RETRACT - GEAR DISSAGREE R CAS ILLUMINATED UPON GEAR RETRACTION WITH DN INDICATING ON RT MLG. **SUPPLEMENTAL INFORMATION - REMOVED RT DOWNLOCK SWITCH CONNECTOR & CLEANED CONNECTOR & SWITCH PINS WITH DEOXOT CONTACT CLEA

## 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 = 'N591QS' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N591QS/reports

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