Tail number · ICAO A645BC
Tracked flights
6
Lifetime CO₂
111.8t
Flight hours
28h
Tail
N503GS
ICAO
A645BC
Size class
Heavy
Fuel burn
410 gal/hr
CO₂ / hour
3,939 kg
Car miles equiv. / hr
9,749
Owner
Alternate Solutions Health Network
Category
Business
N503GS is a Gulfstream G550 owned by Alternate Solutions Health Network.
N503GS is a Gulfstream G550, a heavy jet with a typical fuel burn of 410 gallons per hour.
N503GS's ICAO hex code is A645BC. It is the 24-bit transponder address the aircraft broadcasts over ADS-B, and it is how Celebplanes identifies N503GS in the live feed.
N503GS is not airborne right now. Its most recent tracked flight ended at KDAY — James M. Cox Dayton International Airport on Sep 5, 2026, 08:18 PM.
N503GS emits roughly 3,939 kg of CO₂ per flight hour, equivalent to about 9,749 miles of average passenger-car driving.
Attributions derived from FAA registry + ADSB Exchange + SEC filings; may be incomplete or outdated. Methodology · Report an error. Observational use only.