Apparatus

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sensors Mode-S transponder

789240

ICAO 24-bit transponder address · allocated to China

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

Hex
789240
Octal
36111100
Decimal
7,901,760
Country
CN
Tail
B-LDR
Type
A333
No current signal · last broadcast Jul 26, 00:10 UTC
Flights observed
166
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 00:10 UTC

Last known position

Most recent position reported by Mode-S 789240.

Country allocation

The ICAO 24-bit address 789240 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
AHK456 - 14 2026-07-02
AHK217 Air Hong Kong 14 2026-07-25
AHK216 Air Hong Kong 13 2026-07-23
AHK457 - 11 2026-07-02
AHK209 - 11 2026-06-27
AHK208 - 11 2026-06-26
AHK681 - 9 2026-07-17
AHK205 - 9 2026-07-10
AHK680 - 8 2026-07-16
AHK204 Air Hong Kong 8 2026-07-25
AHK721 Air Hong Kong 6 2026-06-08
AHK720 Air Hong Kong 6 2026-06-06
AHK561 - 6 2026-07-08
AHK326 - 6 2026-07-15
AHK562 - 5 2026-07-09
CPA2015 - 4 2026-07-08
AHK591 Air Hong Kong 4 2026-06-19
AHK572 Air Hong Kong 4 2026-06-20
AHK327 - 4 2026-07-14
CPA3549 Cathay Pacific 2 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AHK204 HKG → KIX Jul 25, 20:45 UTCJul 26, 00:05 UTC3h 20m
2026-07-25 AHK217 NGO → HKG Jul 25, 13:25 UTCJul 25, 16:50 UTC3h 25m
2026-07-23 AHK216 HKG → NGO Jul 23, 19:55 UTCJul 23, 23:00 UTC3h 5m
2026-07-23 AHK217 NGO → HKG Jul 23, 13:15 UTCJul 23, 16:50 UTC3h 35m
2026-07-22 AHK216 - Jul 22, 19:45 UTCJul 22, 23:05 UTC3h 20m
2026-07-22 AHK217 NGO → HKG Jul 22, 13:05 UTCJul 22, 16:30 UTC3h 25m
2026-07-21 AHK216 - Jul 21, 20:00 UTCJul 21, 23:20 UTC3h 20m
2026-07-21 AHK217 NGO → HKG Jul 21, 13:05 UTCJul 21, 16:25 UTC3h 20m
2026-07-20 AHK216 - Jul 20, 20:55 UTCJul 21, 00:25 UTC3h 30m
2026-07-18 CPA3546 BKK → HKG Jul 18, 07:20 UTCJul 18, 07:40 UTC20m
2026-07-18 CPA3546 BKK → HKG Jul 18, 05:05 UTCJul 18, 05:30 UTC25m
2026-07-18 CPA3549 HKG → BKK Jul 18, 02:35 UTCJul 18, 02:55 UTC21m
2026-07-18 CPA3549 HKG → BKK Jul 18, 00:35 UTCJul 18, 00:50 UTC15m
2026-07-17 AHK681 - Jul 17, 16:10 UTCJul 17, 17:20 UTC1h 10m
2026-07-16 AHK680 HKG → TPE Jul 16, 21:30 UTCJul 16, 22:55 UTC1h 25m
2026-07-16 AHK129 ICN → HKG Jul 16, 13:20 UTCJul 16, 16:19 UTC3h 0m
2026-07-15 AHK128 HKG → ICN Jul 15, 20:10 UTCJul 15, 23:30 UTC3h 20m
2026-07-15 AHK326 - Jul 15, 17:00 UTCJul 15, 17:15 UTC15m
2026-07-15 AHK326 - Jul 15, 13:45 UTCJul 15, 14:10 UTC25m
2026-07-14 AHK327 - Jul 14, 22:45 UTCJul 14, 23:10 UTC25m
2026-07-14 AHK327 - Jul 14, 19:55 UTCJul 14, 20:10 UTC15m
2026-07-14 AHK326 - Jul 14, 17:20 UTCJul 14, 17:35 UTC15m
2026-07-14 AHK326 - Jul 14, 14:10 UTCJul 14, 14:40 UTC30m
2026-07-13 AHK327 - Jul 13, 22:40 UTCJul 13, 23:10 UTC30m
2026-07-13 AHK327 - Jul 13, 20:00 UTCJul 13, 20:15 UTC15m
2026-07-13 AHK217 - Jul 13, 13:05 UTCJul 13, 16:25 UTC3h 20m
2026-07-11 AHK216 - Jul 11, 21:25 UTCJul 11, 23:50 UTC2h 25m
2026-07-11 AHK216 - Jul 11, 20:35 UTCJul 11, 20:50 UTC15m
2026-07-11 AHK326 - Jul 11, 17:00 UTCJul 11, 17:15 UTC15m
2026-07-11 AHK326 - Jul 11, 13:50 UTCJul 11, 14:20 UTC30m
2026-07-10 AHK317 - Jul 10, 20:55 UTCJul 11, 00:05 UTC3h 10m
2026-07-10 AHK205 KIX → HKG Jul 10, 13:55 UTCJul 10, 17:10 UTC3h 15m
2026-07-09 AHK204 HKG → KIX Jul 9, 19:35 UTCJul 9, 22:50 UTC3h 15m
2026-07-09 AHK562 - Jul 9, 17:15 UTCJul 9, 17:25 UTC10m
2026-07-08 AHK561 - Jul 8, 21:00 UTCJul 8, 21:10 UTC10m
2026-07-08 CPA2015 TPE → HKG Jul 8, 14:10 UTCJul 8, 15:35 UTC1h 25m
2026-07-08 CPA2026 HKG → TPE Jul 8, 10:55 UTCJul 8, 12:20 UTC1h 25m
2026-07-04 AHK217 - Jul 4, 12:25 UTCJul 4, 15:50 UTC3h 25m
2026-07-02 AHK216 - Jul 2, 20:30 UTCJul 2, 23:40 UTC3h 10m
2026-07-02 AHK456 - Jul 2, 15:10 UTCJul 2, 16:45 UTC1h 35m
2026-07-02 AHK457 - Jul 2, 01:25 UTCJul 2, 12:35 UTC11h 10m
2026-07-01 AHK457 - Jul 1, 21:40 UTCJul 1, 23:20 UTC1h 40m
2026-07-01 AHK456 - Jul 1, 15:00 UTCJul 1, 16:35 UTC1h 35m
2026-06-30 AHK456 - Jun 30, 23:30 UTCJul 1, 12:40 UTC13h 10m
2026-06-30 AHK457 HKG → MNL Jun 30, 20:05 UTCJun 30, 22:00 UTC1h 55m
2026-06-30 AHK456 - Jun 30, 15:10 UTCJun 30, 16:45 UTC1h 35m
2026-06-30 AHK456 - Jun 30, 00:25 UTCJun 30, 13:40 UTC13h 16m
2026-06-29 AHK457 HKG → MNL Jun 29, 20:00 UTCJun 29, 21:39 UTC1h 40m
2026-06-29 AHK205 - Jun 29, 16:25 UTCJun 29, 16:39 UTC15m
2026-06-29 AHK205 - Jun 29, 13:19 UTCJun 29, 15:45 UTC2h 25m

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

Mode-S 789240 frequently asked

What is Mode-S code 789240?
789240 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LDR.
Where is Mode-S 789240 registered?
Mode-S code 789240 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 789240 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 00:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 789240, octal 36111100, decimal 7,901,760.
What flights does 789240 operate?
Mode-S 789240 has broadcast 20 distinct callsigns, including AHK456, AHK217, AHK216, AHK457, AHK209.