Apparatus

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sensors Mode-S transponder

78923F

ICAO 24-bit transponder address · allocated to China

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

Hex
78923F
Octal
36111077
Decimal
7,901,759
Country
CN
Tail
B-LDQ
Type
A333
No current signal · last broadcast 6h ago
Flights observed
168
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 78923F.

Country allocation

The ICAO 24-bit address 78923F 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 - 24 2026-07-08
AHK457 - 20 2026-07-07
AHK721 - 14 2026-06-17
AHK720 Air Hong Kong 12 2026-06-16
AHK681 - 11 2026-07-09
AHK209 - 11 2026-07-13
AHK680 - 9 2026-07-08
AHK208 - 9 2026-07-11
AHK217 - 7 2026-07-02
AHK119 - 6 2026-07-11
AHK769 - 5 2026-06-24
AHK216 - 5 2026-07-01
AHK205 - 5 2026-07-06
AHK204 - 5 2026-07-04
AHK128 - 5 2026-07-10
AHK768 - 4 2026-06-23
AHK129 - 4 2026-06-23
AHK562 Air Hong Kong 3 2026-05-11
AHK561 Air Hong Kong 3 2026-05-09
LD457 - 2 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 LD457 - Jul 13, 23:35 UTCJul 14, 00:05 UTC30m
2026-07-13 LD457 - Jul 13, 20:10 UTCJul 13, 21:50 UTC1h 40m
2026-07-13 AHK209 NRT → HKG Jul 13, 13:30 UTCJul 13, 17:15 UTC3h 45m
2026-07-11 AHK208 - Jul 11, 20:20 UTCJul 12, 00:25 UTC4h 5m
2026-07-11 AHK119 - Jul 11, 14:55 UTCJul 11, 15:10 UTC15m
2026-07-11 AHK119 - Jul 11, 12:05 UTCJul 11, 14:20 UTC2h 15m
2026-07-10 AHK128 HKG → ICN Jul 10, 20:30 UTCJul 10, 23:40 UTC3h 10m
2026-07-09 AHK681 TPE → HKG Jul 9, 14:55 UTCJul 9, 16:15 UTC1h 20m
2026-07-08 AHK680 HKG → TPE Jul 8, 21:45 UTCJul 8, 23:05 UTC1h 20m
2026-07-08 AHK456 - Jul 8, 16:40 UTCJul 8, 16:55 UTC15m
2026-07-08 AHK456 - Jul 8, 15:15 UTCJul 8, 15:50 UTC35m
2026-07-07 AHK457 - Jul 7, 23:50 UTCJul 8, 12:40 UTC12h 50m
2026-07-07 AHK457 HKG → MNL Jul 7, 20:05 UTCJul 7, 22:05 UTC2h 0m
2026-07-07 AHK456 - Jul 7, 17:00 UTCJul 7, 17:15 UTC15m
2026-07-07 AHK456 - Jul 7, 15:35 UTCJul 7, 16:15 UTC40m
2026-07-06 AHK456 - Jul 6, 23:30 UTCJul 7, 13:45 UTC14h 15m
2026-07-06 AHK457 - Jul 6, 20:10 UTCJul 6, 21:55 UTC1h 45m
2026-07-06 AHK205 - Jul 6, 13:10 UTCJul 6, 16:15 UTC3h 5m
2026-07-04 AHK204 HKG → KIX Jul 4, 20:20 UTCJul 4, 23:35 UTC3h 15m
2026-07-04 AHK842 - Jul 4, 17:15 UTCJul 4, 17:25 UTC10m
2026-07-04 AHK842 - Jul 4, 15:10 UTCJul 4, 16:30 UTC1h 20m
2026-07-03 AHK831 - Jul 3, 21:35 UTCJul 3, 23:05 UTC1h 30m
2026-07-03 AHK831 - Jul 3, 20:35 UTCJul 3, 20:45 UTC10m
2026-07-02 AHK217 - Jul 2, 16:30 UTCJul 2, 16:50 UTC20m
2026-07-02 AHK217 - Jul 2, 13:15 UTCJul 2, 15:55 UTC2h 40m
2026-07-01 AHK216 - Jul 1, 19:50 UTCJul 1, 23:05 UTC3h 15m
2026-07-01 AHK205 KIX → HKG Jul 1, 13:10 UTCJul 1, 16:30 UTC3h 20m
2026-06-30 AHK204 HKG → KIX Jun 30, 19:35 UTCJun 30, 22:50 UTC3h 15m
2026-06-30 AHK209 - Jun 30, 16:30 UTCJun 30, 16:45 UTC15m
2026-06-30 AHK209 - Jun 30, 12:45 UTCJun 30, 15:50 UTC3h 5m
2026-06-29 AHK208 HKG → NRT Jun 29, 19:54 UTCJun 29, 23:44 UTC3h 50m
2026-06-29 AHK217 - Jun 29, 16:15 UTCJun 29, 16:35 UTC20m
2026-06-29 AHK217 - Jun 29, 13:00 UTCJun 29, 15:39 UTC2h 40m
2026-06-27 AHK216 - Jun 27, 20:29 UTCJun 27, 23:34 UTC3h 5m
2026-06-27 AHK217 - Jun 27, 15:39 UTCJun 27, 16:00 UTC20m
2026-06-25 AHK216 - Jun 25, 20:05 UTCJun 25, 23:09 UTC3h 5m
2026-06-25 AHK209 - Jun 25, 12:50 UTCJun 25, 16:55 UTC4h 5m
2026-06-24 AHK208 HKG → NRT Jun 24, 20:09 UTCJun 24, 23:59 UTC3h 50m
2026-06-24 AHK769 - Jun 24, 14:00 UTCJun 24, 16:50 UTC2h 50m
2026-06-23 AHK768 - Jun 23, 19:44 UTCJun 23, 20:04 UTC20m
2026-06-23 AHK129 - Jun 23, 15:40 UTCJun 23, 15:55 UTC15m
2026-06-23 AHK129 - Jun 23, 12:55 UTCJun 23, 15:09 UTC2h 15m
2026-06-22 AHK128 HKG → ICN Jun 22, 20:19 UTCJun 22, 23:35 UTC3h 15m
2026-06-22 AHK129 - Jun 22, 15:54 UTCJun 22, 16:05 UTC10m
2026-06-22 AHK129 - Jun 22, 13:05 UTCJun 22, 15:14 UTC2h 10m
2026-06-20 AHK128 HKG → ICN Jun 20, 21:00 UTCJun 21, 00:04 UTC3h 5m
2026-06-20 AHK456 - Jun 20, 15:34 UTCJun 20, 17:14 UTC1h 40m
2026-06-19 AHK456 - Jun 19, 23:34 UTCJun 20, 12:45 UTC13h 10m
2026-06-19 AHK457 - Jun 19, 20:04 UTCJun 19, 21:44 UTC1h 40m
2026-06-19 AHK205 - Jun 19, 13:59 UTCJun 19, 17:09 UTC3h 10m

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

Mode-S 78923F frequently asked

What is Mode-S code 78923F?
78923F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LDQ.
Where is Mode-S 78923F registered?
Mode-S code 78923F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78923F broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78923F, octal 36111077, decimal 7,901,759.
What flights does 78923F operate?
Mode-S 78923F has broadcast 20 distinct callsigns, including AHK456, AHK457, AHK721, AHK720, AHK681.