N658FX is a 2015 Gulfstream G650ER, registered to Sky Chair LLC of Cleveland, OH. It works in Flexjet's floating charter fleet: on the Part 135 certificate (J7SA), and positioned wherever the next trip starts rather than kept at one airport. In the twelve months to 7 September 2026 it flew 210 legs on 112 days, about 128,637 nautical miles. That is 38% more than the median Gulfstream G650ER in U.S. charter service (64 airframes tracked), which puts it among the harder-working examples of the type. It touched 74 airports but keeps returning to the same city pairs: 60% of legs repeat a route already flown in the year.
Photo: a Gulfstream G650ER, representative of the type, not this airframe.
Flexjet and the certificate
N658FX is on Flexjet's FAA Part 135 operations specifications (D085), designator J7SA, Rochester (ROC) certificate office.
How N658FX is used
Average leg 613 nm, one-to-two-hour stages. December was the busiest month at 49 legs; September the quietest at 16. 31% of departures fall on weekends, a mix of business and leisure use. Longest leg tracked: Boeing Field/King County International Airport (KBFI) to Miami International Airport (KMIA), 2,365 nm on 21 October 2025. Last seen Chicago Midway International Airport (KMDW) to San Francisco International Airport (KSFO) on 5 September 2026.
Most-used airports
- Teterboro Airport (KTEB) 18
- Westchester County Airport (KHPN) 12
- London Luton Airport (EGGW) 10
- London Farnborough Airport (EGLF) 10
- Dallas Love Field (KDAL) 9
Outside the U.S.
No airport accounts for more than 7% of departures.
About 16% of legs cross a border, most often to Peterborough Regional Airport (CYPQ).
Our own aggregate of public ADS-B archives for Mode S A8AB05, 10 September 2025 to 7 September 2026; counts are floors, not exact totals.
Registry record
| Registration | N658FX |
|---|---|
| Serial number | 6166 |
| Type | Gulfstream G650ER (FAA code GVI (G650ER)) |
| Year of manufacture | 2015 |
| Registrant | Sky Chair LLC (Co-owned), Cleveland, OH |
| Certificate issued | 24 October 2022 |
| Airworthiness date | 30 October 2018 |
| Last registry action | 16 January 2024 |
| Registration expires | 31 October 2029 |
| Mode S code | A8AB05 |
NTSB record
Nothing under N658FX in the NTSB aviation database (1 May 2026 download).
Gulfstream G650ER type data
| Passengers (typical) | 19 |
|---|---|
| Range | 7,500 nm |
| Cruise | 516 kt high-speed; long-range 488 kts |
| Ceiling | 51,000 ft |
| Engines | 2x Rolls-Royce BR725 A1-12 |
| Cabin | 46.8 ft × 8.5 ft × 6.4 ft |
| Baggage | 195 cu ft |
| Takeoff distance | 6,299 ft |
Sources
FAA Releasable Aircraft Database, 14 May 2026 release (live FAA record); FAA Part 135 operations specifications (D085); public ADS-B archives (adsb.lol) reduced by The Jet Finder; NTSB aviation database. Type figures are manufacturer-published for the Gulfstream G650ER family, not this airframe. Corrections.
