ESR821

Flight

Status

Incomplete (signal lost)

Departure

Cheongju International Airport/Cheongju Air Base (K-59/G-513) (CJJ) — Cheongju, South Korea

Departed

2026-09-26 15:36 UTC

Distance flown

497 km

Registration

Type

Boeing 737-800

Seats

147 total (135 Economy, 12 Prestige) (typical for type, not this tail)

Max altitude

34,000 ft

Max ground speed

436 kt

Tracked

41m · 494 km

Altitude (ft, max 34,000)

Ground speed (kt, max 436)

Altitude (ft, max 34,000)

Ground speed (kt, max 436)

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.

Korean Air (KAL)

T'way Air (TWB)

Latest flights

Departed	Flight	Route	Reg	Aircraft	Status	Distance
2026-09-30 15:13 UTC	ESR821	CJJ → ? Cheongju → ?	HL8578	Boeing 737-800	Incomplete (signal lost)	503 km
2026-09-26 15:36 UTC	ESR821	CJJ → ? Cheongju → ?	HL8587	Boeing 737-800	Incomplete (signal lost)	497 km
2026-09-23 15:09 UTC	ESR821	CJJ → ? Cheongju → ?	HL8700	Boeing 737-800	Incomplete (signal lost)	372 km
2026-09-19 14:57 UTC	ESR821	CJJ → ? Cheongju → ?	HL8542	Boeing 737 MAX 8	Incomplete (signal lost)	515 km
2026-09-16 15:26 UTC	ESR821	CJJ → ? Cheongju → ?	HL8545	Boeing 737-800	Incomplete (signal lost)	471 km
2026-09-12 15:18 UTC	ESR821	CJJ → ? Cheongju → ?	HL8588	Boeing 737-800	Incomplete (signal lost)	563 km
2026-09-09 15:09 UTC	ESR821	CJJ → ? Cheongju → ?	HL8587	Boeing 737-800	Incomplete (signal lost)	496 km
2026-09-05 15:06 UTC	ESR821	CJJ → ? Cheongju → ?	HL8542	Boeing 737 MAX 8	Incomplete (signal lost)	494 km
2026-08-29 14:58 UTC	ESR821	CJJ → ? Cheongju → ?	HL8700	Boeing 737-800	Completed	739 km
2026-08-26 15:03 UTC	ESR821	CJJ → ? Cheongju → ?	HL8542	Boeing 737 MAX 8	Completed	697 km
2026-08-22 15:25 UTC	ESR821	CJJ → ? Cheongju → ?	HL8542	Boeing 737 MAX 8	Completed	629 km
2026-08-19 14:57 UTC	ESR821	CJJ → ? Cheongju → ?	HL8545	Boeing 737-800	Completed	857 km
2026-08-15 15:49 UTC	ESR821	CJJ → ? Cheongju → ?	HL8549	Boeing 737-800	Completed	600 km