CMB121

Flight

Status

Incomplete (signal lost)

Departure

Sofia Airport (SOF) — Sofia, Bulgaria

Est. departure time

2026-09-06 01:15 UTC (approx.)

Distance flown

3827 km

Registration

Type

Boeing B767 300ER

Seats

255 total (255 Economy)

Max altitude

33,025 ft

Max ground speed

532 kt

Tracked

4h 11m · 3,727 km

Altitude (ft, max 33,025)

Ground speed (kt, max 532)

Altitude (ft, max 33,025)

Ground speed (kt, max 532)

From the ADS-B positions we received; time since the first fix. A dashed stretch is a gap in reception, bridged by a straight line.

United States Air Force (CMB)

Atlas Air (GTI)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-09-20 19:19 UTC	CMB121	? → ?	N645GT	Boeing B767 300ER	Incomplete (signal lost)	234 km
2026-09-20 02:41 UTC	CMB121	SOF → ? Sofia → ?	N645GT	Boeing B767 300ER	Incomplete (signal lost)	3803 km
2026-09-19 14:28 UTC	CMB121	NGU → SOF Norfolk → Sofia	N645GT	Boeing B767 300ER	Completed	8482 km
2026-09-06 17:34 UTC	CMB121	? → ?	N645GT	Boeing B767 300ER	Incomplete (signal lost)	174 km
2026-09-06 01:32 UTC	CMB121	SOF → ? Sofia → ?	N645GT	Boeing B767 300ER	Incomplete (signal lost)	3827 km
2026-09-05 13:13 UTC	CMB121	NGU → SOF Norfolk → Sofia	N645GT	Boeing B767 300ER	Completed	8577 km
2026-08-25 09:06 UTC	CMB121	SOF → ? Sofia → ?	N662GT	Boeing B767 300ER	Incomplete (signal lost)	6895 km
2026-08-22 12:21 UTC	CMB121	NGU → SOF Norfolk → Sofia	N641GT	Boeing B767 300ER	Completed	10701 km