- Owner type
- Corporation
- Serial number
- 4114
- Year built
- 2008
- Type
- Fixed wing multi engine
- Engine
- Turbo-fan
- Airworthiness
- Standard, transport
- Airworthiness date
- February 18, 2008
- Certificate issued
- July 30, 2020
- Expires
- July 31, 2027
- Mode S code
- A500C5
Gulfstream Aerospace GIV-X (G450)TCDS A12EAAirframe · Gulfstream Aerospace GIV-X (G450)TCDS E25NEEngine · Rolls-Royce TAY-611-8C
From the FAA registry file of October 24, 2026.
On this page
Airworthiness directives that may apply · 20
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1994 | 2 |
|---|---|
| 2004 | 1 |
| 2005 | 1 |
| 2006 | 3 |
| 2007 | 1 |
| 2008 | 1 |
| 2009 | 1 |
| 2012 | 3 |
| 2013 | 1 |
| 2014 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2023 | 2 |
| 2026 | 1 |
Airframe · Gulfstream Aerospace GIV-X (G450)
AD 2026-13-02NavigationAD 2023-08-03Flight ControlsAD 2023-10-02Indicating/Recording System, NavigationInformation bulletins that may apply · 3
Advisory, not mandatory.
Airframe · Gulfstream Aerospace GIV-X (G450)
SAIB CE-19-20Flight Compartment WindowsSAIB NM-10-13Navigation: Flight Management SystemSAIB NM-10-12Navigation: Flight Management SystemNTSB investigations
No NTSB investigations matched to N421QSMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Gulfstream Aerospace GIV-X (G450) aircraft
FAA incident reports
No FAA accident or incident reports matched to N421QSMatched by N-number and event date, checked against the reported make and model. Reports from before this aircraft carried the mark are under Earlier aircraft. Reports on Gulfstream Aerospace GIV-X (G450) aircraft
Service difficulty reports · 7
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
SDR CWQA20260627001Dump Valve · malfunctionedON APPROACH TO KAPF AND UPON SELECTING GEAR DOWN, CREW RECEIVED 'NOSE GEAR NOT DOWN' AND 'L-R MAIN GEAR NOT DOWN CAS' MESSAGE, FOLLOWED BY A 'L HYDRAULIC QUANTITY LOW CAS' MESSAGE. COMPLETED THE LANDING GEAR FAILED TO EXTEND CHECKLIST, THAT INSTRUCTED TO USE TSDR DXTA2021120652960Float Valve · defectiveFUEL DUMP: SHORTLY AFTER TAKEOFF, WITH 27,000 POUNDS OF FUEL ON BOARD, VISIBLE FUEL STREAMING FROM LEFT WING NACA DUCT. LEAK APPEARED TO STOP IN LEVEL FLIGHT. SEE ATTACHED PICTURES. // SIGNOFF // GAINED ACCESS TO L/H WING FUEL TANK, AND DRAINED BOTH LH AND RH SDR DXTA2021080946680Bracket · corrodedLEFT ENGINE GENERATOR: LEFT AC/DC FAILURE IN AMBER. TROUBLESHOT TO SUSPECTED LEFT IDG GROUNDING BRACKET AND FEEDER CABLE ATTACHMENT HARDWARE. NOT ALL PARTS AVAILABLE. COMPILED WITH AQRD RFTS-105208 TO TEMP REPAIR BRACKET FOR PROPER GROUNDING OF E4130B FEEDER SDR GR4D20180522001Bearing · corrodedRIGHT ELEVATOR HINGE NR 4 BEARING BLEEDING RUST AND WORN CAUSING ELEVATOR TO HAVE VERTICAL PLAY.SDR DXTA2017032006387Gcu · failedIN FLIGHT A LIGHT HAZE OF MIST OR SMOKE APPEARED. SHORTLY AFTER, THE LT AC GENERATOR FAILED. REMOVED AND REPLACED LEFT ENGINE IDG GCU IAW CMP 242603.SDR DXTA2013111805572Apu · smokeTHE APU WHEN "COLD" WITH AIR SELECTED ON EMITS "SMOKE" INTO CABIN. IT SMELLS LIKE "OILY" EXHAUST. MAINTENANCE SAW SLIGHT SMOKE, APU WAS WARM, AND PRODUCED AND ODOR. INSTALLED DIFFERENT APU. OPS AND LEAK CHECKED GOOD.SDR DXTA2013110105556Control Unit · failedAFTER COLD SOAK AT ALTITUDE, BRAKES VERY GRABBY. PEDAL DEFLECTION OPERATES NORMALLY BUT NO BRAKE PRESSURE ON INDICATOR APPEARS UNTIL AN INCH OR MORE BRAKE PEDAL DEFLECTION. THEN THE BRAKE PRESSURE JUMPS TO 600 PSI AND THE BRAKES GRAB AND JERK THE AIRCRAFT.
STCs that may be installed · 274
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.