Apparatus

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sensors Mode-S transponder

7812C3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1025 · AIRBUS A-320

Hex
7812C3
Octal
36011303
Decimal
7,869,123
Country
CN
Tail
B-1025
Type
A320
No current signal · last broadcast 21h ago
Flights observed
104
Distinct callsigns
20
Country
CN
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 7812C3.

Country allocation

The ICAO 24-bit address 7812C3 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
CQH8875 - 5 2026-06-17
CQH7385 Spring Airlines 5 2026-06-02
CQH8876 - 3 2026-06-17
CQH7587 - 3 2026-07-13
CQH7420 - 3 2026-07-04
CQH7302 Spring Airlines 3 2026-05-09
CQH7285 - 3 2026-07-04
CQH8934 Spring Airlines 2 2026-05-15
CQH8933 - 2 2026-07-04
CQH8878 - 2 2026-06-21
CQH8877 - 2 2026-06-21
CQH8779 - 2 2026-06-21
CQH8761 Spring Airlines 2 2026-04-29
CQH8516 Spring Airlines 2 2026-06-14
CQH7609 - 2 2026-06-06
CQH7432 Spring Airlines 2 2026-04-16
CQH7431 Spring Airlines 2 2026-04-16
CQH7301 Spring Airlines 2 2026-05-08
CQH6278 - 2 2026-07-07
CQH6277 - 2 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CQH7587 - Jul 13, 00:15 UTCJul 13, 10:25 UTC10h 10m
2026-07-12 CQH7587 - Jul 12, 11:55 UTCJul 13, 10:25 UTC22h 30m
2026-07-10 CQH6538 - Jul 10, 09:00 UTCJul 10, 09:25 UTC25m
2026-07-10 CQH6537 - Jul 10, 07:00 UTCJul 10, 07:15 UTC15m
2026-07-10 CQH6610 - Jul 10, 03:00 UTCJul 10, 03:30 UTC30m
2026-07-10 CQH6609 PVG → FUK Jul 10, 01:10 UTCJul 10, 01:30 UTC20m
2026-07-09 CQH7282 - Jul 9, 14:15 UTCJul 9, 16:30 UTC2h 15m
2026-07-09 CQH7281 - Jul 9, 10:40 UTCJul 9, 12:55 UTC2h 15m
2026-07-08 CQH6892 - Jul 8, 02:20 UTCJul 8, 02:45 UTC25m
2026-07-07 CQH6278 - Jul 7, 21:05 UTCJul 7, 21:25 UTC20m
2026-07-07 CQH6278 - Jul 7, 17:50 UTCJul 7, 18:20 UTC30m
2026-07-07 CQH6277 - Jul 7, 15:15 UTCJul 7, 15:45 UTC30m
2026-07-07 CQH6277 - Jul 7, 12:20 UTCJul 7, 12:40 UTC20m
2026-07-06 CQH8545 - Jul 6, 13:15 UTCJul 6, 13:50 UTC35m
2026-07-05 CQH6218 - Jul 5, 11:25 UTCJul 5, 13:10 UTC1h 45m
2026-07-05 CQH6217 - Jul 5, 01:50 UTCJul 5, 09:55 UTC8h 5m
2026-07-04 CQH8933 - Jul 4, 23:15 UTCJul 5, 00:35 UTC1h 20m
2026-07-04 CQH7420 - Jul 4, 16:20 UTCJul 4, 17:50 UTC1h 30m
2026-07-04 CQH7285 - Jul 4, 12:50 UTCJul 4, 15:00 UTC2h 10m
2026-07-03 CQH6760 - Jul 3, 12:35 UTCJul 3, 13:15 UTC40m
2026-07-01 CQH6809 - Jul 1, 07:30 UTCJul 2, 00:15 UTC16h 45m
2026-06-30 CQH6810 KWL → SHE Jun 30, 13:55 UTCJul 1, 07:30 UTC17h 35m
2026-06-29 CQH7596 - Jun 29, 06:19 UTCJun 29, 06:29 UTC10m
2026-06-29 CQH7595 - Jun 29, 04:14 UTCJun 29, 04:39 UTC25m
2026-06-28 CQH7588 CJU → SHE Jun 28, 03:05 UTCJun 28, 12:50 UTC9h 45m
2026-06-28 CQH7587 SHE → CJU Jun 28, 00:15 UTCJun 28, 00:59 UTC45m
2026-06-27 CQH7502 - Jun 27, 04:24 UTCJun 27, 10:29 UTC6h 5m
2026-06-27 CQH7501 - Jun 27, 01:59 UTCJun 27, 02:29 UTC30m
2026-06-23 CQH7348 - Jun 23, 13:59 UTCJun 23, 14:19 UTC20m
2026-06-23 CQH7347 - Jun 23, 08:50 UTCJun 23, 08:59 UTC10m
2026-06-22 CQH7420 - Jun 22, 15:10 UTCJun 22, 16:45 UTC1h 35m
2026-06-22 CQH7285 - Jun 22, 00:24 UTCJun 22, 13:14 UTC12h 50m
2026-06-21 CQH8779 - Jun 21, 10:49 UTCJun 22, 05:20 UTC18h 30m
2026-06-21 CQH8878 - Jun 21, 10:14 UTCJun 22, 05:20 UTC19h 5m
2026-06-21 CQH8877 - Jun 21, 03:44 UTCJun 21, 09:10 UTC5h 25m
2026-06-18 CQH6190 - Jun 18, 14:55 UTCJun 18, 15:40 UTC45m
2026-06-17 CQH8876 - Jun 17, 15:30 UTCJun 17, 15:50 UTC20m
2026-06-17 CQH8876 - Jun 17, 14:35 UTCJun 17, 14:55 UTC20m
2026-06-17 CQH8875 - Jun 17, 03:25 UTCJun 17, 04:00 UTC35m
2026-06-16 CQH8875 - Jun 16, 12:10 UTCJun 17, 02:55 UTC14h 46m
2026-06-16 CQH8875 - Jun 16, 03:10 UTCJun 17, 02:45 UTC23h 36m
2026-06-16 CQH7286 - Jun 16, 01:50 UTCJun 16, 12:14 UTC10h 25m
2026-06-15 CQH7419 - Jun 15, 22:35 UTCJun 16, 00:35 UTC2h 0m
2026-06-15 CQH7420 BKK → CAN Jun 15, 15:15 UTCJun 15, 16:49 UTC1h 35m
2026-06-15 CQH7285 - Jun 15, 05:04 UTCJun 15, 13:00 UTC7h 55m
2026-06-14 CQH8516 HND → PVG Jun 14, 16:50 UTCJun 15, 13:00 UTC20h 9m
2026-06-14 CQH8516 HND → PVG Jun 14, 16:05 UTCJun 15, 13:00 UTC20h 55m
2026-06-14 CQH8515 - Jun 14, 08:05 UTCJun 14, 13:40 UTC5h 35m
2026-06-14 CQH8559 - Jun 14, 05:50 UTCJun 14, 06:35 UTC45m
2026-06-12 CQH7133 LHW → TSN Jun 12, 09:50 UTCJun 12, 10:15 UTC25m

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-1025 page for operator, model, and routing details .

Mode-S 7812C3 frequently asked

What is Mode-S code 7812C3?
7812C3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1025.
Where is Mode-S 7812C3 registered?
Mode-S code 7812C3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812C3 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812C3, octal 36011303, decimal 7,869,123.
What flights does 7812C3 operate?
Mode-S 7812C3 has broadcast 20 distinct callsigns, including CQH8875, CQH7385, CQH8876, CQH7587, CQH7420.