# Service difficulty reports: N121CQ, cancelled Mar 23, 2009

A list on [N121CQ, cancelled Mar 23, 2009](https://openairdocs.org/deregistered/N121CQ-2009-03-23.md).

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

- [SDR NSVA2008013](https://openairdocs.org/sdr/NSVA2008013.md): Power Supply · inoperative · Mar 29, 2008 · N121CQ · Saab SF340A · Emergency Lighting
  > DURING ENGINE SHUTDOWN IN BKW, EMERGENCY LIGHT CAME ON AND CREW NOTICED THE FIRST 2 FLOOR PROX LIGHTS WERE OUT ALONG WITH ONE EMERGENCY EXIT LIGHT. REPLACED POWER SUPPLY.
- [SDR NSVA20070253](https://openairdocs.org/sdr/NSVA20070253.md): Sign · inoperative · Jan 7, 2008 · N121CQ · Saab SF340A · Emergency Lighting
  > EMERGENCY EXIT SIGN FORWARD CABIN RIGHT SIDE DOES NOT ILLUMINATE. TESTED EMERGENCY EXIT LIGHT IAW AMM 33-50-10. OPS CHECK GOOD.
- [SDR NSVA20070173](https://openairdocs.org/sdr/NSVA20070173.md): Warning Light · false indication · Jul 2, 2007 · N121CQ · Saab SF340A · Central Warning
  > ABORTED TAKEOFF 70KTS, LT ENGINE OIL MASTER WARNING LIGHT ILLUMINATED. RAN LT ENG AT 80 PERCENT TORQUE FOR 30 MIN, AFTER CHECK OIL LEVEL AND VERIFIED IT WAS FULL. RECHECK OIL AFTER RUN AND OIL LEVEL DID NOT DROP FROM FULL LINE, PRIOR TO FIRST ENG RUNS SERVIC
- [SDR NSVA20070169](https://openairdocs.org/sdr/NSVA20070169.md): Pressure Switch · malfunctioned · Jun 30, 2007 · N121CQ · Saab SF340A · Engine Oil Pressure
  > OIL PRESSURE ANNUNCIATOR LIGHT CAME ON DURING TAKEOFF ROLL/TAKEOFF ABORTED. REMOVED AND REPLACED RT ENGINE OIL PRESSURE SWITCH.
- [SDR NSVA20070101](https://openairdocs.org/sdr/NSVA20070101.md): Relay · malfunctioned · Apr 17, 2007 · N121CQ · Saab SF340A · Air Intake Anti/De-Ice System
  > AFTER T/O NOTICED INTENSE BURNING INSULATION SMOKE ODOR IN COCKPIT AND FRONT PORTION OF CABIN, AND RT INTAKE LIGHT ILLUMINATED. REMOVED AND REPLACED ENG INTAKE POWER RELAY 36HE IAW AMM 30-20-10-04. REPLACED TERMINAL IAW WM 20-20-10, P/N SM15CXD4 (NSN) MS 350
- [SDR NSVA20070079](https://openairdocs.org/sdr/NSVA20070079.md): Smoke Detector · malfunctioned · Mar 29, 2007 · N121CQ · Saab SF340A · Smoke Detection
  > AFT CARGO LIGHT SMOKE DETECTOR REMAINS ILLUMINATED AT ALL TIMES. REMOVED AND REPLACED AFT SMOKE DETECTOR IAW SMM 26-13-00. OP CHECKS GOOD MEL NR 24719.
- [SDR NSVA20070001](https://openairdocs.org/sdr/NSVA20070001.md): Warning System · malfunctioned · Jan 1, 2007 · N121CQ · Saab SF340A · Overheat Detection
  > FOUND LEFT ENGINE TAILPIPE HOT LIGHT ILLUMINATED. PERFORMED AN ENG RUN COULD NOT DUPLICATE PROB, OPS CHECK GOOD.
- [SDR NSVA200600222](https://openairdocs.org/sdr/NSVA200600222.md): Oil System · unknown · Dec 3, 2006 · N121CQ · Saab SF340A · Turbine Engine Oil System
  > LEFT ENGINE OIL PRESS LIGHT ILLUMINATED DURING TAKEOFF AT 115 KNOTS. C/W SEI 576 72-00-00 LOW OIL LEVEL CLEARING PROCEDURES CWC 79-11-07S INSP AND CLEANING POWER UNIT SCAVENGE SCREENS, CWC 79-11-06/1S LT POWER UNIT CHIP DETECTOR, OIL CONSUMPTION RUN WITHIN LI
- [SDR NSVA200600214](https://openairdocs.org/sdr/NSVA200600214.md): Smoke Detector · malfunctioned · Nov 21, 2006 · N121CQ · Saab SF340A · Smoke Detection
  > CARGO SMOKE LIGHT ON WHEN LOADING BAGGAGE. REMOVED AND REPLACED AFT SMOKE DETECTOR IAW MM 26-13-15. OP CHECK GOOD PN ON/OFF CGAB1201-01 SN OFF 406 SN ON 1238.
- [SDR NSVA200600199](https://openairdocs.org/sdr/NSVA200600199.md): Smoke Detector · false activation · Oct 7, 2006 · N121CQ · Saab SF340A · Smoke Detection
  > CARGO SMOKE LIGHT ILLUMINATED. REMOVED AND REPLACED FWD CARGO SMOKE DETECTOR IAW 26-13-15. OPS CHECK GOOD PN ON/OFF LLAB1201-01 SN ON 852, SN OFF 495.
- [SDR NSVA200600149](https://openairdocs.org/sdr/NSVA200600149.md): Wheel · unknown · Sep 25, 2006 · N121CQ · Saab SF340A · Nose/Tail Landing Gear
  > ABORTED TAKEOFF DUE TO EXTREME NOSE WHEEL SHIMMY. REMOVED AND REPLACED NOSE WHEEL TIRES REF AMM 32-41-15. OPSCHECK GOOD, RT PN OFF/ON 5006227, SN ON NOV97221 SN OFF AUG 04-3156, LT- PN OFF/ON 5006227, SN ON FEB992575 SN OFF MAR97-2095.
- [SDR 05032006C](https://openairdocs.org/sdr/05032006C.md): Warning System · malfunctioned · Apr 22, 2006 · N121CQ · Saab SF340A · Overheat Detection
  > RIGHT TAIL PIPE HOT LIGHT CAME ON AFTER T/O AND AGAIN TWICE IN CLIMBOUT. RAN CHECKLIST LIGHT WENT OUT, DID NOT SHUT ENGINE DOWN. PERFORMED HIGH POWER RUNS IAW 71-00-00. PERFORMED OPS CHECK OF TAIL PIPE OVERHEAT DETECTION SYSTEM IAW 26-12-00. OPS CHECK GOOD
- [SDR SF20050904](https://openairdocs.org/sdr/SF20050904.md): Brake Assy · malfunctioned · Sep 4, 2005 · N121CQ · Saab SF340A · Landing Gear Brake System
  > A/C 121 FLIGHT 7521 SCE-IAD, 9/4/05. UPON ARRIVAL IN IAD, PILOT REPORTS WHEN PARKING AT THE GATE AND THE BRAKES FELT SOFT. ON POST FLIGHT, FOUND HYDRAULIC PUDDLE UNDER RIGHT GEAR. MAINTENANCE INSPECTED AND FOUND THAT THE NR 3 BRAKE HAD RUPTURED AND DAMAGED
- [SDR SF20050820](https://openairdocs.org/sdr/SF20050820.md): Indicator · failed · Aug 20, 2005 · N121CQ · Saab SF340A · Engine BMEP/Torque Indicating
  > FLIGHT 7558 IAD-ABE, AFTER ARMING CONSTANT TORQUE ON TAKEOFF, RIGHT ENGINE TORQUE INDICATED 20 PERCENT LOWER THEN SELECTED. AIRCRAFT REJECTED TAKEOFF AND RETURNED TO BLOCK. FOUND RIGHT TORQUE INDICATOR TO BE AT FAULT. R/R INDICATOR, OPS CHECK GOOD.
- [SDR SF8202005](https://openairdocs.org/sdr/SF8202005.md): Indicator · faulty · Aug 20, 2005 · N121CQ · Saab SF340A · Engine BMEP/Torque Indicating
  > FLIGHT 7558 IAD-ABE, AFTER ARMING CONSTANT TORQUE ON TAKEOFF, RIGHT ENGINE TORQUE INDICATED 20 PERCENT LOWER THEN SELECTED. AIRCRAFT REJECTED TAKEOFF AND RETURNED TO BLOCK. FOUND RIGHT TORQUE INDICATOR TO BE AT FAULT. R/R INDICATOR, OPS CHECK GOOD.
- [SDR SF200508121](https://openairdocs.org/sdr/SF200508121.md): Battery · odor · Aug 12, 2005 · N121CQ · Saab SF340A · Flight Management Computing Hardware System
  > VERY STRONG ELEC ODOR COMMING FROM COCKPIT BATTS/EXT POWER AND AVIONICS ON, MFD C/B G18 POPPED AFTER 30 SECS OF NOTICING ODOR. CONTRACTED MAINTENANCE, PULLED AND CAPPED C/B. MAINT CONFIRMED SMELL COMING FROM MFD.
- [SDR 200508041](https://openairdocs.org/sdr/200508041.md): Warning Light · illuminated · Aug 4, 2005 · N121CQ · Saab SF340A · Smoke Detection
  > FLT 7566 HPN-IAD, DURING ENGINE START, CARGO SMOKE LIGHT ON CWP ILLUMINATED. CREW PERFORMED VISUAL INSPECTION CONTRACT MAINTENANCE CALLED IN TO DEFER SYSTEM.
- [SDR SF20050726](https://openairdocs.org/sdr/SF20050726.md): Engine · malfunctioned · Jul 26, 2005 · N121CQ · Saab SF340A · Engine (Turbine/Turboprop)
  > FLT 7539 IAD-DAY STARTED NR 1 ENGINE NORMALLY, AFTER TURNING ON NR 1 GENERATOR, LT ITT INCREASED TO 1068, MOTORED NR 1 ENGINE DOWN & SHUTOFF NR 1 GENERATOR.
- [SDR SF200506271](https://openairdocs.org/sdr/SF200506271.md): Compressor · fod · Jun 27, 2005 · N121CQ · Saab SF340A · Turbine Engine Compressor Section
  > LT ENGINE NOTICEABLE HOTTER IN FLIGHT. ITT INCREASED 40 DEGREES FROM PREVIOUS FLIGHT. UNABLE TO HOLD CHARTED TQ BY AT LEAST 15 PERCENT AT ANY ALTITUDE OR OAT. ITT CHANGED FROM 7 DEGREES SPLIT TO 50 DEGREES SPLIT FROM PREVIOUS TREND. AIRCRAFT RETURNED AND WAS
- [SDR SF200506171](https://openairdocs.org/sdr/SF200506171.md): Battery · discharged · Jun 17, 2005 · N121CQ · Saab SF340A · Battery/Charger System
  > IN FLIGHT LT HOT BATTERY LIGHT ILLUMINATED WITH ALL ASSOCIATED RELAYS OPEN. AIR CREW DIVERTED AIRCRAFT. MAINTENANCE ARRIVED AND FOUND LT BATTERY BAD. REMOVED AND REPLACED LT BATTERY.
- [SDR SF20050606](https://openairdocs.org/sdr/SF20050606.md): Battery Pack · inoperative · Jun 6, 2005 · N121CQ · Saab SF340A · Passenger Compartment Lighting
  > EMERGENCY LIGHTS OVER MAIN CABIN DOOR INOP. REMOVED AND REPLACED EMERGENCY BATTERY PACK, OPS CHECKED GOOD.
- [SDR 200506011](https://openairdocs.org/sdr/200506011.md): Warning Light · illuminated · Jun 1, 2005 · N121CQ · Saab SF340A · Landing Gear Position and Warning
  > FLIGHT 7881 SCE/IAD, GEAR UNSAFE LIGHT STAYED ON AFTER DEPARTURE. CYCLED GEAR, LIGHT STAYED ON, FLIGHT CONTINUED TO IAD.
- [SDR 245291](https://openairdocs.org/sdr/245291.md): Indicator · malfunctioned · Apr 9, 2005 · N121CQ · Saab SF340A · Engine Oil Pressure
  > LT PROP OIL PRESSURE FLUX BETWEEN 10-80 PSI. REMOVED AND REPLACED LEFT PROP OIL PRESSURE IND, OPS CHECK NORMAL.
- [SDR 200504051](https://openairdocs.org/sdr/200504051.md): Warning Light · illuminated · Apr 5, 2005 · N121CQ · Saab SF340A · Engine Oil Pressure
  > LOSS OF RIGHT PROP OIL PRESSURE. AIRCRAFT DECLARED EMERGENCY AND SAFELY RETURNED TO IAD.
- [SDR 224873](https://openairdocs.org/sdr/224873.md): Receiver · inoperative · Dec 28, 2004 · N121CQ · Saab SF340A · Landing and Taxi Aids
  > NR 1 AND NR 2 NAV RECEIVERS INOPERATIVE WITH MULTIPLE NAV FREQUENCIES SELECTED. NO CDI DISPLAY, NO DME, RMI'S SHOWED CORRECTLY. AIRCRAFT RETURNED TO MAINTENANCE HANGAR.
- [SDR 010461](https://openairdocs.org/sdr/010461.md): Engine · surges · May 5, 2004 · N121CQ · Saab SF340A · Engine (Turbine/Turboprop)
  > FLT 4563 FROM PIT TO AVP, 10 MINUTES INTO THE FLIGHT, AIRCREW FELT NR 1 ENGINE SURGE. AIRCREW REDUCED POWER TO 25 PERCENT AND THE ENGINE STEADIED ITSELF. AIRCRAFT RETURNED TO THE GATE.
- [SDR 117111](https://openairdocs.org/sdr/117111.md): Wheel · seized · Mar 16, 2003 · N121CQ · Saab SF340A · Wheel/Ski/Float
  > Flt 4497 pit-fwa. during take-off roll at approximately 40-60kts. the crew aborted due to a severe nosewheel shimmy. the a/c returned to the gate without incident. a/c taken out of service @1800. pit mx found the lh nosewheel bearing to be seized. mx remov
- [SDR 0301021](https://openairdocs.org/sdr/0301021.md): Smoke Detector · dirty · Jan 2, 2003 · N121CQ · Saab SF340A · Smoke Detection
  > FLIGHT 4501, AIRCRAFT WAS TAXIING TO TAKEOFF WHEN THE AVIONICS SMOKE WARNING LIGHT ILLUMINATED ON THE CWP. THE AIRCRAFT RETURNED TO THE GATE WITHOUT INCIDENT. MECHANIC INSPECTED AND CLEANED THE AVIONICS SMOKE DETECTOR.
- [SDR 0212111](https://openairdocs.org/sdr/0212111.md): Engine · malfunctioned · Dec 11, 2002 · N121CQ · Saab SF340A · Engine (Turbine/Turboprop)
  > ON TAKEOFF ROLL, EXPERIENCED A LOSS OF TORQUE INDICATION ON THE RIGHT POWERPLANT. AIRCRAFT ABORTED TAKEOFF AND WAS TOLD TO RETURN TO THE GATE BY MOC, MECHANIC WAS NOTIFIED TO MEET AIRCRAFT AT THE GATE.
- [SDR 2003F00065](https://openairdocs.org/sdr/2003F00065.md): Weu · malfunctioned · Nov 14, 2002 · N121CQ · Saab SF340A · Central Warning
  > FLT 4471 - TTN-BED, ABORTED TAKEOFF, DUE TO A CONFIGURATION WARNING AND WHITE BITE LIGHT. MAINTENANCE REMOVED AND REPLACED THE WEU. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)
- [SDR CHQA20000037](https://openairdocs.org/sdr/CHQA20000037.md): Power Supply · discharged · Sep 19, 2000 · N121CQ · Saab SF340A · Emergency Lighting
  > CREW REPORTED THE EMERGENCY LIGHTS CAME ON WHEN IN GROUND POSITION AND WERE VERY DIM. MAINTENANCE REPLACED THE BATTERY POWER SUPPLIES, GROUND TESTED NORMAL.

## 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 = 'N121CQ' AND deregistration_id = 'N121CQ-2009-03-23'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N121CQ-2009-03-23/reports

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