Apparatus

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sensors Mode-S transponder

780AC6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LEF · AIRBUS A-321

Hex
780AC6
Octal
36005306
Decimal
7,867,078
Country
CN
Tail
B-LEF
Type
A321
No current signal · last broadcast Jul 26, 15:55 UTC
Flights observed
476
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 15:55 UTC

Last known position

Most recent position reported by Mode-S 780AC6.

Country allocation

The ICAO 24-bit address 780AC6 falls within the block assigned to China (CN) by ICAO Annex 10, Volume III. Every aircraft registered in China receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
HKE639 Hong Kong Express Airways 28 2026-07-22
HKE631 Hong Kong Express Airways 25 2026-07-26
HKE638 - 20 2026-07-18
HKE630 Hong Kong Express Airways 20 2026-07-26
HKE619 - 17 2026-07-10
HKE111 - 15 2026-06-28
HKE703 - 14 2026-07-10
HKE702 - 14 2026-07-10
HKE131 Hong Kong Express Airways 14 2026-07-25
HKE226 Hong Kong Express Airways 13 2026-07-26
HKE825 - 12 2026-07-19
HKE618 - 12 2026-07-09
HKE227 - 11 2026-07-05
HKE130 Hong Kong Express Airways 11 2026-07-25
HKE824 Hong Kong Express Airways 10 2026-07-19
HKE173 - 10 2026-07-15
HKE110 - 9 2026-06-28
HKE596 - 8 2026-07-08
HKE566 Hong Kong Express Airways 8 2026-07-19
HKE563 - 8 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HKE226 HKG → NGB Jul 26, 14:25 UTCJul 26, 15:55 UTC1h 30m
2026-07-26 HKE631 ICN → HKG Jul 26, 12:20 UTCJul 26, 12:30 UTC10m
2026-07-26 HKE631 ICN → HKG Jul 26, 09:15 UTCJul 26, 11:40 UTC2h 25m
2026-07-26 HKE630 HKG → ICN Jul 26, 04:45 UTCJul 26, 07:20 UTC2h 36m
2026-07-26 HKE630 HKG → ICN Jul 26, 04:05 UTCJul 26, 04:15 UTC10m
2026-07-25 HKE115 TPE → HKG Jul 25, 11:20 UTCJul 25, 12:50 UTC1h 30m
2026-07-25 HKE114 HKG → TPE Jul 25, 07:15 UTCJul 25, 08:45 UTC1h 30m
2026-07-25 HKE131 KHH → HKG Jul 25, 02:30 UTCJul 25, 03:35 UTC1h 5m
2026-07-25 HKE130 HKG → KHH Jul 25, 00:15 UTCJul 25, 01:25 UTC1h 10m
2026-07-24 HKE135 KHH → HKG Jul 24, 13:10 UTCJul 24, 14:30 UTC1h 20m
2026-07-24 HKE134 HKG → KHH Jul 24, 10:55 UTCJul 24, 12:00 UTC1h 5m
2026-07-24 HKE113 TPE → HKG Jul 24, 07:45 UTCJul 24, 09:00 UTC1h 15m
2026-07-24 HKE112 HKG → TPE Jul 24, 04:50 UTCJul 24, 06:10 UTC1h 20m
2026-07-23 HKE226 HKG → NGB Jul 23, 12:25 UTCJul 24, 03:20 UTC14h 55m
2026-07-23 HKE631 ICN → HKG Jul 23, 06:55 UTCJul 23, 10:00 UTC3h 5m
2026-07-23 HKE630 HKG → ICN Jul 23, 02:05 UTCJul 23, 05:20 UTC3h 15m
2026-07-22 HKE639 FUK → HKG Jul 22, 04:55 UTCJul 22, 12:20 UTC7h 25m
2026-07-21 HKE747 PEN → HKG Jul 21, 12:05 UTCJul 21, 12:20 UTC15m
2026-07-21 HKE746 HKG → PEN Jul 21, 04:25 UTCJul 21, 04:40 UTC15m
2026-07-20 HKE113 TPE → HKG Jul 20, 08:25 UTCJul 20, 09:40 UTC1h 15m
2026-07-20 HKE112 HKG → TPE Jul 20, 05:55 UTCJul 20, 07:25 UTC1h 30m
2026-07-20 HKE131 KHH → HKG Jul 20, 03:30 UTCJul 20, 04:45 UTC1h 15m
2026-07-20 HKE130 HKG → KHH Jul 20, 00:35 UTCJul 20, 01:45 UTC1h 10m
2026-07-19 HKE825 - Jul 19, 12:30 UTCJul 19, 14:25 UTC1h 55m
2026-07-19 HKE824 HKG → OKA Jul 19, 09:05 UTCJul 19, 10:35 UTC1h 30m
2026-07-19 HKE563 - Jul 19, 07:05 UTCJul 19, 07:20 UTC15m
2026-07-19 HKE566 HKG → DAD Jul 19, 02:30 UTCJul 19, 02:45 UTC15m
2026-07-18 HKE639 - Jul 18, 09:20 UTCJul 18, 12:00 UTC2h 40m
2026-07-18 HKE638 - Jul 18, 04:55 UTCJul 18, 08:00 UTC3h 5m
2026-07-17 HKE226 - Jul 17, 12:25 UTCJul 18, 03:30 UTC15h 6m
2026-07-17 HKE113 TPE → HKG Jul 17, 07:40 UTCJul 17, 09:10 UTC1h 30m
2026-07-17 HKE112 HKG → TPE Jul 17, 05:15 UTCJul 17, 06:40 UTC1h 25m
2026-07-17 HKE131 KHH → HKG Jul 17, 02:54 UTCJul 17, 04:04 UTC1h 10m
2026-07-17 HKE130 HKG → KHH Jul 17, 00:14 UTCJul 17, 01:25 UTC1h 10m
2026-07-16 HKE117 - Jul 16, 13:34 UTCJul 16, 15:00 UTC1h 25m
2026-07-16 HKE116 HKG → TPE Jul 16, 10:55 UTCJul 16, 12:30 UTC1h 35m
2026-07-16 HKE131 KHH → HKG Jul 16, 02:50 UTCJul 16, 04:00 UTC1h 10m
2026-07-16 HKE130 HKG → KHH Jul 16, 00:45 UTCJul 16, 01:55 UTC1h 10m
2026-07-15 HKE559 - Jul 15, 13:30 UTCJul 15, 13:40 UTC10m
2026-07-15 HKE558 - Jul 15, 09:45 UTCJul 15, 09:50 UTC5m
2026-07-15 HKE173 - Jul 15, 06:05 UTCJul 15, 07:20 UTC1h 15m
2026-07-15 HKE172 - Jul 15, 03:35 UTCJul 15, 04:45 UTC1h 10m
2026-07-14 HKE625 HND → HKG Jul 14, 21:40 UTCJul 15, 01:15 UTC3h 34m
2026-07-14 HKE624 HKG → HND Jul 14, 15:35 UTCJul 14, 19:35 UTC4h 0m
2026-07-14 HKE631 ICN → HKG Jul 14, 07:15 UTCJul 14, 10:20 UTC3h 5m
2026-07-14 HKE630 - Jul 14, 02:45 UTCJul 14, 06:00 UTC3h 15m
2026-07-13 HKE135 KHH → HKG Jul 13, 13:05 UTCJul 13, 14:15 UTC1h 10m
2026-07-13 HKE134 HKG → KHH Jul 13, 10:55 UTCJul 13, 11:55 UTC1h 0m
2026-07-13 HKE113 TPE → HKG Jul 13, 08:01 UTCJul 13, 09:35 UTC1h 35m
2026-07-13 HKE112 - Jul 13, 04:55 UTCJul 13, 06:25 UTC1h 30m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the B-LEF page for operator, model, and routing details .

Mode-S 780AC6 frequently asked

What is Mode-S code 780AC6?
780AC6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LEF.
Where is Mode-S 780AC6 registered?
Mode-S code 780AC6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780AC6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780AC6, octal 36005306, decimal 7,867,078.
What flights does 780AC6 operate?
Mode-S 780AC6 has broadcast 20 distinct callsigns, including HKE639, HKE631, HKE638, HKE630, HKE619.