Apparatus

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sensors Mode-S transponder

789271

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-KKA · AIRBUS A-321neo

Hex
789271
Octal
36111161
Decimal
7,901,809
Country
CN
Tail
B-KKA
Type
A21N
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
547
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 789271.

Country allocation

The ICAO 24-bit address 789271 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
HKE601 Hong Kong Express Airways 18 2026-07-19
HKE851 - 13 2026-07-17
HKE739 - 13 2026-07-14
HKE738 - 13 2026-07-14
HKE705 - 12 2026-07-13
HKE701 - 12 2026-06-17
HKE669 Hong Kong Express Airways 12 2026-06-03
HKE600 - 12 2026-07-18
HKE857 - 11 2026-07-15
HKE849 Hong Kong Express Airways 11 2026-07-20
HKE675 Hong Kong Express Airways 11 2026-07-26
HKE674 Hong Kong Express Airways 11 2026-07-26
HKE695 - 10 2026-07-14
HKE627 Hong Kong Express Airways 10 2026-07-26
HKE535 - 10 2026-07-21
HKE842 - 9 2026-07-18
HKE755 Hong Kong Express Airways 9 2026-07-19
HKE704 - 9 2026-07-13
HKE700 - 9 2026-06-17
HKE694 - 9 2026-07-14

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 HKE627 ICN → HKG Jul 26, 18:00 UTCJul 26, 21:05 UTC3h 5m
2026-07-26 HKE626 HKG → ICN Jul 26, 13:40 UTCJul 26, 17:00 UTC3h 20m
2026-07-26 HKE675 PUS → HKG Jul 26, 08:50 UTCJul 26, 11:45 UTC2h 55m
2026-07-26 HKE674 HKG → PUS Jul 26, 04:35 UTCJul 26, 07:35 UTC3h 1m
2026-07-25 HKE691 NGO → HKG Jul 25, 08:45 UTCJul 25, 12:20 UTC3h 35m
2026-07-25 HKE690 HKG → NGO Jul 25, 03:55 UTCJul 25, 07:10 UTC3h 15m
2026-07-24 HKE647 NRT → HKG Jul 24, 10:50 UTCJul 24, 14:50 UTC4h 0m
2026-07-24 HKE646 HKG → NRT Jul 24, 05:15 UTCJul 24, 09:15 UTC4h 0m
2026-07-24 HKE193 RMQ → HKG Jul 24, 02:25 UTCJul 24, 03:40 UTC1h 15m
2026-07-24 HKE192 HKG → RMQ Jul 24, 00:05 UTCJul 24, 01:10 UTC1h 5m
2026-07-23 HKE733 BKK → HKG Jul 23, 19:30 UTCJul 23, 19:35 UTC5m
2026-07-23 HKE733 BKK → HKG Jul 23, 17:20 UTCJul 23, 18:55 UTC1h 35m
2026-07-23 HKE732 HKG → BKK Jul 23, 14:40 UTCJul 23, 16:15 UTC1h 35m
2026-07-23 HKE732 HKG → BKK Jul 23, 13:55 UTCJul 23, 14:05 UTC10m
2026-07-23 HKE691 NGO → HKG Jul 23, 08:05 UTCJul 23, 11:25 UTC3h 20m
2026-07-23 HKE690 HKG → NGO Jul 23, 03:20 UTCJul 23, 06:40 UTC3h 20m
2026-07-22 HKE235 PKX → HKG Jul 22, 19:00 UTCJul 22, 22:00 UTC3h 0m
2026-07-22 HKE234 - Jul 22, 14:35 UTCJul 22, 14:45 UTC10m
2026-07-22 HKE870 HKG → NRT Jul 22, 02:40 UTCJul 22, 12:40 UTC10h 0m
2026-07-21 HKE535 - Jul 21, 13:25 UTCJul 21, 15:10 UTC1h 45m
2026-07-21 HKE534 HKG → MNL Jul 21, 10:10 UTCJul 21, 11:55 UTC1h 45m
2026-07-21 HKE675 PUS → HKG Jul 21, 05:30 UTCJul 21, 08:25 UTC2h 55m
2026-07-21 HKE674 HKG → PUS Jul 21, 01:30 UTCJul 21, 04:25 UTC2h 55m
2026-07-20 HKE733 - Jul 20, 17:40 UTCJul 20, 20:10 UTC2h 30m
2026-07-20 HKE732 - Jul 20, 16:05 UTCJul 20, 16:30 UTC25m
2026-07-20 HKE732 - Jul 20, 14:10 UTCJul 20, 14:25 UTC15m
2026-07-20 HKE849 NRT → HKG Jul 20, 08:00 UTCJul 20, 11:55 UTC3h 55m
2026-07-20 HKE848 HKG → NRT Jul 20, 02:45 UTCJul 20, 06:45 UTC4h 0m
2026-07-19 HKE755 CNX → HKG Jul 19, 15:25 UTCJul 19, 15:40 UTC15m
2026-07-19 HKE755 CNX → HKG Jul 19, 13:10 UTCJul 19, 14:50 UTC1h 40m
2026-07-19 HKE744 - Jul 19, 09:20 UTCJul 19, 11:45 UTC2h 25m
2026-07-19 HKE601 FUK → HKG Jul 19, 03:55 UTCJul 19, 06:40 UTC2h 45m
2026-07-18 HKE600 - Jul 18, 23:50 UTCJul 19, 02:35 UTC2h 45m
2026-07-18 HKE689 KIX → HKG Jul 18, 12:05 UTCJul 18, 15:20 UTC3h 15m
2026-07-18 HKE688 HKG → KIX Jul 18, 07:00 UTCJul 18, 10:40 UTC3h 40m
2026-07-18 HKE843 - Jul 18, 03:30 UTCJul 18, 05:15 UTC1h 45m
2026-07-18 HKE842 - Jul 18, 01:45 UTCJul 18, 02:00 UTC15m
2026-07-17 HKE842 - Jul 17, 23:39 UTCJul 18, 00:55 UTC1h 15m
2026-07-17 HKE183 - Jul 17, 12:45 UTCJul 17, 13:50 UTC1h 5m
2026-07-17 HKE182 - Jul 17, 10:25 UTCJul 17, 11:35 UTC1h 10m
2026-07-17 HKE851 KIX → HKG Jul 17, 05:20 UTCJul 17, 08:45 UTC3h 25m
2026-07-17 HKE810 HKG → KIX Jul 17, 00:25 UTCJul 17, 03:55 UTC3h 30m
2026-07-16 HKE647 NRT → HKG Jul 16, 11:20 UTCJul 16, 15:14 UTC3h 55m
2026-07-16 HKE646 HKG → NRT Jul 16, 05:40 UTCJul 16, 10:04 UTC4h 25m
2026-07-15 HKE857 NRT → HKG Jul 15, 23:10 UTCJul 16, 02:55 UTC3h 45m
2026-07-15 HKE854 - Jul 15, 17:40 UTCJul 15, 21:45 UTC4h 5m
2026-07-15 HKE899 KIX → HKG Jul 15, 08:40 UTCJul 15, 12:00 UTC3h 20m
2026-07-15 HKE898 HKG → KIX Jul 15, 03:45 UTCJul 15, 07:20 UTC3h 35m
2026-07-14 HKE607 PUS → HKG Jul 14, 22:50 UTCJul 15, 01:45 UTC2h 55m
2026-07-14 HKE604 HKG → PUS Jul 14, 18:55 UTCJul 14, 21:55 UTC3h 0m

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-KKA page for operator, model, and routing details .

Mode-S 789271 frequently asked

What is Mode-S code 789271?
789271 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KKA.
Where is Mode-S 789271 registered?
Mode-S code 789271 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 789271 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 789271, octal 36111161, decimal 7,901,809.
What flights does 789271 operate?
Mode-S 789271 has broadcast 20 distinct callsigns, including HKE601, HKE851, HKE739, HKE738, HKE705.