# Service difficulty reports: N420UE, cancelled Jan 22, 2009

A list on [N420UE, cancelled Jan 22, 2009](https://openairdocs.org/deregistered/N420UE-2009-01-22.md).

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

- [SDR WTAA980019](https://openairdocs.org/sdr/WTAA980019.md): Controller · failed · Feb 3, 1998 · N420UE · Bag JETSTM3101 · Windshield/Door Rain/Ice Removal
  > SFO - LEFT WINDOW HEAT CAPTION ILLUMINATED ON CAP PANEL DURING TAKEOFF. TAKEOFF ABORTED. MAINTENANCE REPLACED LEFT WINDSHIELD HEAT CONTROLLER. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (X)
- [SDR WTAA970218](https://openairdocs.org/sdr/WTAA970218.md): Fire Detector · malfunctioned · Nov 26, 1997 · N420UE · Bag JETSTM3101 · Fire Detection
  > SFO - FIRE DETECTOR LIGHT REMAINED ILLUMINATED ON RIGHT SIDE. MAINTENANCE CLEANED CONNECTOR ON RIGHT ENGINE AT DETECTOR GROUND. BOTH FIRE DETECTORS CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)
- [SDR WTAA970188](https://openairdocs.org/sdr/WTAA970188.md): Switch · broken · Sep 30, 1997 · N420UE · Bag JETSTM3101 · Landing Gear Position and Warning
  > SFO - LEFT MAIN LANDING GEAR INTRANSIT LIGHT FAILED TO ILLUMINATE. MAINTENANCE REPAIRED BROKEN WIRE AT LEFT MAIN LANDING GEAR UPLOCK MICROSWITCH. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)
- [SDR WTAA970131](https://openairdocs.org/sdr/WTAA970131.md): Fuel Contl Unit · failed · Jul 11, 1997 · N420UE · Bag JETSTM3101 · Fuel Control/Turbine Engines
  > SBP - RIGHT ENGINE TORQUE AND EGT FLUCTUATION REPORTED. EMERGENCY DECLARED. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RIGHT ENGINE FUEL CONTROL UNIT. OPERATIONAL AND LEAK CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (X)
- [SDR WTAA970127B](https://openairdocs.org/sdr/WTAA970127B.md): Tq Signal Cond · out of adjust · Jul 11, 1997 · N420UE · Bag JETSTM3101 · Engine BMEP/Torque Indicating
  > SFO - RIGHT ENGINE NOT MAKING TAKEOFF TORQUE. TAKEOFF ABORTED. MAINTENANCE CLEANED FUEL BYPASS VALVE CANNON PLUG AND ADJUSTED TORQUE SIGNAL CONDITIONER. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNEDTO SERVICE. (X)
- [SDR WTAA970127A](https://openairdocs.org/sdr/WTAA970127A.md): Cannon Plug · contaminated · Jul 11, 1997 · N420UE · Bag JETSTM3101 · Fuel Controlling System
  > SFO - RIGHT ENGINE NOT MAKING TAKEOFF TORQUE. TAKEOFF ABORTED. MAINTENANCE CLEANED FUEL BYPASS VALVE CANNON PLUG AND ADJUSTED TORQUE SIGNAL CONDITIONER. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (X)
- [SDR WTAA970077](https://openairdocs.org/sdr/WTAA970077.md): Skin · birdstrike · May 6, 1997 · N420UE · Bag JETSTM3101 · Wing, Plate/Skin
  > FAT - BIRD STIKE LEFT WING INBOARD BETWEEN NACELLE AND FUSELAGE REPORTED. MAINTENANCE COMPLIED WITH BIRD STIKE INSPECTION. FOUND MINOR DENT IN LEADING EDGE. REPAIRED DAMAGE IAW SRM. AIRCRAFT RETURNED TO SERVICE. (M)
- [SDR WTAA970038](https://openairdocs.org/sdr/WTAA970038.md): Selector Valve · intermittent · Mar 3, 1997 · N420UE · Bag JETSTM3101 · Landing Gear Selector
  > IPL - GEAR FAILED TO EXTEND ON INITIAL SELECTION. GEAR EXTENDED AFTER SEVERAL ATTEMPTS. AIRCRAFT LANED WITHOUT INCIDENT. AIRCRAFT FERRIED TO FAT FOR REPAIRS. MAINTENANCE REPLACED GEAR SELECTOR VALVE. GEAR SWING AND LEAK CHECK SATISFAC TORY. AIRCRAFT RETU
- [SDR WTAA970037](https://openairdocs.org/sdr/WTAA970037.md): Gear Selector · intermittent · Feb 28, 1997 · N420UE · Bag JETSTM3101 · Landing Gear Selector
  > SNA - LANDING GEAR FAILED TO EXTEND ON INITIAL GEAR EXTENSION ATTEMPT. GEAR EXTENDED INTO POSITION WHILE CREW WAS ATTEMPTING TO COMPLY WITH EMERGENCY GEAR EXTENSION PROCEDURE. AIRCRAFT LANDED WITHOUT INCIDENT. AIRCRAFT FERRIED TO FAT FOR REPAIRS. MAINTENAN
- [SDR WTAA970036](https://openairdocs.org/sdr/WTAA970036.md): Radar Indicator · failed · Feb 27, 1997 · N420UE · Bag JETSTM3101 · Weather Radar System
  > FAT - WEATHER RADAR INOPERATIONAL REPORTED. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE REPLACED WEATHER RADAR INDICATOR AND ANTENNA DRIVE FOR TROUBLESHOOTING. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. UPON BENCH CHECK D
- [SDR WTAA960222](https://openairdocs.org/sdr/WTAA960222.md): Gear Door · bird strike · Dec 27, 1996 · N420UE · Bag JETSTM3101 · Landing Gear Doors
  > VIS - BIRD STRIKE TO RIGHT MAIN GEAR DOOR ON LANDING. AIRCRAFT FERRIED TO FAT. MAINTENANCE INSPECTED RIGHT MAIN GEAR DOOR FOR DAMAGE. NO DAMAGE NOTED. AIRCRAFT RETURNED TO SERVICE. (M)
- [SDR WTAA960212](https://openairdocs.org/sdr/WTAA960212.md): Engine · bird strike · Dec 7, 1996 · N420UE · Bag JETSTM3101 · Engine (Turbine/Turboprop)
  > LAX - BIRD STRIKE LEFT SIDE OF AIRCRAFT INGESTED INTO LEFT ENGINE. MAINTENANCE INSPECTED AIRCRAFT FOR DAMAGE. NO DAMAGE NOTED. AIRCRAFT RETURNED TO SERVICE. (M)
- [SDR WTAA960148](https://openairdocs.org/sdr/WTAA960148.md): Connector · dirty · Jul 19, 1996 · N420UE · Bag JETSTM3101 · Landing Gear Steering System
  > SEA - GROUND PROXIMITY SYSTEM GEAR WARNING SOUNDED ON FINAL APPROACH. CREW ACCOMPLISHED MISSED APPROACH. FOUND LANDING GEAR CONTROL WARNING CIRCUIT BREAKER TRIPPED. RESET CIRCUIT BREAKER. ALL INDICATIONS NORMAL. ALL INDICATIONS NORMAL. AIRCRAFT LANDED WI
- [SDR WTAA960140](https://openairdocs.org/sdr/WTAA960140.md): Starter/Gen · failed · Jul 1, 1996 · N420UE · Bag JETSTM3101 · Starter-Generator
  > SEA - LEFT GENERATOR FAILED IN FLIGHT. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. MX REPLACED LEFT STARTER GENERATOR. OPERATIONAL CHECK NORMAL DURING GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (M)
- [SDR WTAA960065](https://openairdocs.org/sdr/WTAA960065.md): Switch · broken wire · Mar 24, 1996 · N420UE · Bag JETSTM3101 · Landing Gear Position and Warning
  > FAT - LEFT MAIN LANDING GEAR INTRASIT LIGHT REPORTED INOPERATIVE. MAINTENANCE REPAIRED DAMAGED WIRE AT LEFT MAIN LANDING GEAR UPLOCK MICROSWITCH. GEAR INDICATIONS NORMAL DURING GROUND CHECK. AIRCRAFT RETURNED TO SERVICE. (M)
- [SDR WTAA960036](https://openairdocs.org/sdr/WTAA960036.md): Tq Signal Cond · failed · Feb 16, 1996 · N420UE · Bag JETSTM3101 · Engine BMEP/Torque Indicating
  > LAX - LEFT ENGINE TORQUE INDICATION FLUCTUATION AND AIRCRAFT YAW TENDENCY REPORTED DURING CLIMB-OUT. CREW ACCOMPLISHED IN FLIGHT SHUTDOWN OF LEFT ENGINE AND RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE INSPECTED ENGINE AND INDICATING SYSTEM. DETERMINED
- [SDR WTAA950280](https://openairdocs.org/sdr/WTAA950280.md): Fuel Contl Unit · failed · Oct 4, 1995 · N420UE · Bag JETSTM3101 · Fuel Heater
  > SMF - RIGHT ENGINE TORQUE LIMITED AT 65 PERCENT TO 70 PERCENT DURING TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED RIGHT ENGINE FUEL CONTROL UNIT. RIGHT ENGINE OPERATIONAL CHECK NORMAL DURING ENGINE GROUND RUN. AIRCRAFT R
- [SDR WTAA950194](https://openairdocs.org/sdr/WTAA950194.md): Bypass Valve · failed · May 18, 1995 · N420UE · Bag JETSTM3101 · Fuel Controlling System
  > CIC - LEFT ENGINE FLAMEOUT REPORTED DURING ROLLOUT FROM LANDING. MAINTENANCE REMOVED AND REPLACED LEFT ENGINE FUEL BYPASS VALVE. ENGINE LEAK CHECK AND OPERATIONAL CHECK NORMAL DURING ENGINE GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (W)
- [SDR WTAA950156](https://openairdocs.org/sdr/WTAA950156.md): Indicator Bulb · loose · Apr 6, 1995 · N420UE · Bag JETSTM3101 · Landing Gear Position and Warning
  > SFO - INTERMITTENT LEFT MLG INTRANSIT LIGHT ILLUMINATION REPORTED DURING GEAR RETRACTION. MAINTENANCE INSPECTED LANDING GEAR POSITION INDICATION SYSTEM. FOUND LEFT MAIN GEAR INTRANSIT LAMP LOOSE IN INDICATOR, PN DN1050ZMK2. RESECURED LAMP IN SOCKET. SYSTEM
- [SDR WTAA950116](https://openairdocs.org/sdr/WTAA950116.md): Stall Vane · failed · Mar 10, 1995 · N420UE · Bag JETSTM3101 · Stall Warning System
  > SEA - RT STALL WARNING AND STICK SHAKER CAME ON IN-FLIGHT. AIRCRAFT LANDED WITHOUT INCIDENT. AIRCRAFT FERRIED TO EUG. MAINTENANCE RPELACED RT STALL VANE. STALL SYSTEM OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (X)

## 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 = 'N420UE' AND deregistration_id = 'N420UE-2009-01-22'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/deregistered/N420UE-2009-01-22/reports

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