Apparatus

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sensors Mode-S transponder

789278

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LDY · AIRBUS A-330-300

Hex
789278
Octal
36111170
Decimal
7,901,816
Country
CN
Tail
B-LDY
Type
A333
Transponder active on ground
Flights observed
183
Distinct callsigns
20
Country
CN
Last broadcast
4m ago

Last known position

Most recent position reported by Mode-S 789278.

Country allocation

The ICAO 24-bit address 789278 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
AHK205 - 19 2026-07-08
AHK217 - 12 2026-07-06
AHK204 - 12 2026-07-07
AHK681 - 11 2026-07-10
AHK209 - 11 2026-07-09
AHK129 - 11 2026-07-07
AHK456 - 10 2026-06-25
AHK216 - 10 2026-07-04
AHK680 - 9 2026-07-09
AHK457 - 9 2026-06-24
CPA2015 - 8 2026-07-04
AHK208 - 8 2026-07-08
AHK128 - 8 2026-07-06
AHK561 - 5 2026-07-11
CPA2026 - 4 2026-07-03
AHK769 - 4 2026-06-22
AHK327 Air Hong Kong 4 2026-06-10
AHK842 Air Hong Kong 3 2026-06-05
AHK831 Air Hong Kong 3 2026-06-03
AHK768 - 3 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 AHK720 HKG → HKG Jul 13, 20:40 UTCJul 14, 17:55 UTC21h 15m
2026-07-11 AHK561 - Jul 11, 21:15 UTCJul 11, 21:25 UTC10m
2026-07-11 CPA2072 - Jul 11, 09:45 UTCJul 11, 10:00 UTC15m
2026-07-11 CPA3073 - Jul 11, 04:15 UTCJul 11, 04:25 UTC10m
2026-07-11 CPA3073 - Jul 11, 01:15 UTCJul 11, 01:35 UTC20m
2026-07-10 AHK681 - Jul 10, 00:25 UTCJul 10, 01:35 UTC1h 10m
2026-07-09 AHK680 HKG → TPE Jul 9, 20:50 UTCJul 9, 22:10 UTC1h 20m
2026-07-09 AHK209 - Jul 9, 13:35 UTCJul 9, 17:25 UTC3h 50m
2026-07-08 AHK208 HKG → NRT Jul 8, 21:15 UTCJul 9, 01:20 UTC4h 5m
2026-07-08 AHK205 KIX → HKG Jul 8, 13:05 UTCJul 8, 16:25 UTC3h 20m
2026-07-07 AHK204 HKG → KIX Jul 7, 20:20 UTCJul 7, 23:40 UTC3h 20m
2026-07-07 AHK129 - Jul 7, 13:05 UTCJul 7, 16:20 UTC3h 15m
2026-07-06 AHK128 - Jul 6, 19:40 UTCJul 6, 22:50 UTC3h 10m
2026-07-06 AHK217 - Jul 6, 13:05 UTCJul 6, 16:25 UTC3h 20m
2026-07-04 AHK216 - Jul 4, 23:05 UTCJul 5, 02:25 UTC3h 20m
2026-07-04 CPA2015 - Jul 4, 01:15 UTCJul 4, 01:40 UTC25m
2026-07-04 CPA2015 - Jul 4, 00:20 UTCJul 4, 00:40 UTC20m
2026-07-03 CPA2026 - Jul 3, 21:05 UTCJul 3, 22:25 UTC1h 20m
2026-07-03 AHK209 - Jul 3, 13:00 UTCJul 3, 17:40 UTC4h 40m
2026-07-02 AHK208 - Jul 2, 20:05 UTCJul 2, 23:50 UTC3h 45m
2026-07-02 AHK205 - Jul 2, 16:20 UTCJul 2, 16:30 UTC10m
2026-07-02 AHK205 - Jul 2, 13:15 UTCJul 2, 15:45 UTC2h 30m
2026-07-01 AHK204 HKG → KIX Jul 1, 21:30 UTCJul 2, 00:45 UTC3h 15m
2026-07-01 AHK217 - Jul 1, 16:10 UTCJul 1, 16:20 UTC10m
2026-07-01 AHK217 - Jul 1, 12:55 UTCJul 1, 15:35 UTC2h 40m
2026-06-30 AHK216 - Jun 30, 19:50 UTCJun 30, 23:10 UTC3h 20m
2026-06-29 AHK561 - Jun 29, 20:19 UTCJun 29, 20:35 UTC15m
2026-06-29 AHK209 - Jun 29, 16:44 UTCJun 29, 17:05 UTC20m
2026-06-29 AHK209 - Jun 29, 13:04 UTCJun 29, 16:10 UTC3h 5m
2026-06-27 AHK208 HKG → NRT Jun 27, 20:39 UTCJun 28, 00:20 UTC3h 40m
2026-06-27 CPA3546 - Jun 27, 07:15 UTCJun 27, 07:30 UTC15m
2026-06-27 CPA3546 - Jun 27, 05:10 UTCJun 27, 06:44 UTC1h 35m
2026-06-27 CPA3549 - Jun 27, 00:34 UTCJun 27, 03:04 UTC2h 30m
2026-06-26 AHK209 - Jun 26, 12:44 UTCJun 26, 16:54 UTC4h 10m
2026-06-25 AHK208 HKG → NRT Jun 25, 19:49 UTCJun 25, 23:44 UTC3h 55m
2026-06-25 AHK456 - Jun 25, 14:59 UTCJun 25, 16:39 UTC1h 40m
2026-06-24 AHK457 - Jun 24, 23:04 UTCJun 25, 12:30 UTC13h 25m
2026-06-24 AHK457 - Jun 24, 19:49 UTCJun 24, 21:34 UTC1h 45m
2026-06-24 AHK456 - Jun 24, 14:55 UTCJun 24, 16:29 UTC1h 35m
2026-06-23 AHK456 - Jun 23, 23:14 UTCJun 24, 12:50 UTC13h 35m
2026-06-23 AHK457 - Jun 23, 19:55 UTCJun 23, 21:54 UTC2h 0m
2026-06-23 AHK217 - Jun 23, 16:14 UTCJun 23, 16:29 UTC15m
2026-06-23 AHK217 - Jun 23, 13:05 UTCJun 23, 15:44 UTC2h 40m
2026-06-22 AHK216 - Jun 22, 20:10 UTCJun 22, 23:20 UTC3h 10m
2026-06-22 AHK769 - Jun 22, 14:19 UTCJun 22, 17:10 UTC2h 50m
2026-06-20 AHK768 - Jun 20, 19:55 UTCJun 20, 20:14 UTC20m
2026-06-20 AHK681 - Jun 20, 15:14 UTCJun 20, 15:24 UTC10m
2026-06-20 AHK681 - Jun 20, 14:09 UTCJun 20, 14:29 UTC20m
2026-06-19 AHK680 HKG → TPE Jun 19, 21:19 UTCJun 19, 22:39 UTC1h 20m
2026-06-19 AHK456 - Jun 19, 14:59 UTCJun 19, 16:34 UTC1h 35m

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

Mode-S 789278 frequently asked

What is Mode-S code 789278?
789278 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LDY.
Where is Mode-S 789278 registered?
Mode-S code 789278 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 789278 broadcasting right now?
Mode-S 789278 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 789278, octal 36111170, decimal 7,901,816.
What flights does 789278 operate?
Mode-S 789278 has broadcast 20 distinct callsigns, including AHK205, AHK217, AHK204, AHK681, AHK209.