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sensors Mode-S transponder

7812DC

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1392 · BOEING 737 MAX 8

Hex
7812DC
Octal
36011334
Decimal
7,869,148
Country
CN
Tail
B-1392
Type
B38M
No current signal · last broadcast Jul 26, 23:00 UTC
Flights observed
144
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 23:00 UTC

Last known position

Most recent position reported by Mode-S 7812DC.

Country allocation

The ICAO 24-bit address 7812DC 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
CCA872 - 10 2026-07-18
CCA871 - 10 2026-07-18
CCA821 - 6 2026-07-17
CCA702 Air China 6 2026-04-28
CCA1404 - 4 2026-07-16
CCA108 Air China 4 2026-07-20
CCA901 - 3 2026-07-11
CCA822 Air China 3 2026-07-04
CCA800 - 3 2026-06-29
CCA782 Air China 3 2026-07-26
CCA701 Air China 3 2026-04-28
CCA551 Air China 3 2026-04-29
CCA1389 Air China 3 2026-04-30
CCA1244 - 3 2026-07-07
CCA1215 Air China 3 2026-07-26
CCA117 - 3 2026-06-30
CCA107 - 3 2026-07-19
CCA902 - 2 2026-07-11
CCA781 Air China 2 2026-07-25
CCA778 - 2 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CCA1215 PEK → KHG Jul 26, 22:50 UTCJul 26, 23:00 UTC10m
2026-07-26 CCA1256 - Jul 26, 17:15 UTCJul 26, 17:35 UTC20m
2026-07-26 CCA1255 - Jul 26, 08:00 UTCJul 26, 08:20 UTC20m
2026-07-26 CCA782 TBS → URC Jul 26, 05:35 UTCJul 26, 05:55 UTC20m
2026-07-25 CCA782 TBS → URC Jul 25, 18:40 UTCJul 25, 22:15 UTC3h 35m
2026-07-25 CCA781 URC → TBS Jul 25, 05:50 UTCJul 25, 16:25 UTC10h 35m
2026-07-24 CCA1349 PEK → CSX Jul 24, 12:15 UTCJul 25, 04:00 UTC15h 45m
2026-07-24 CCA1216 KHG → PEK Jul 24, 09:45 UTCJul 24, 10:00 UTC15m
2026-07-23 CCA1215 PEK → KHG Jul 23, 22:55 UTCJul 23, 23:15 UTC20m
2026-07-23 CCA1448 - Jul 23, 10:25 UTCJul 23, 17:55 UTC7h 30m
2026-07-23 CCA956 UBN → PEK Jul 23, 06:50 UTCJul 23, 07:10 UTC20m
2026-07-23 CCA955 PEK → UBN Jul 23, 02:40 UTCJul 23, 02:55 UTC15m
2026-07-22 CCA1242 AAT → PEK Jul 22, 16:25 UTCJul 22, 16:45 UTC20m
2026-07-21 CCA782 - Jul 21, 20:30 UTCJul 21, 21:00 UTC30m
2026-07-21 CCA781 - Jul 21, 18:30 UTCJul 21, 19:15 UTC45m
2026-07-20 CCA1256 - Jul 20, 18:15 UTCJul 20, 18:25 UTC10m
2026-07-20 CCA1255 - Jul 20, 09:00 UTCJul 20, 09:15 UTC15m
2026-07-20 CCA108 HKG → PEK Jul 20, 03:10 UTCJul 20, 03:30 UTC20m
2026-07-19 CCA107 - Jul 19, 11:00 UTCJul 19, 14:05 UTC3h 5m
2026-07-19 CCA1361 - Jul 19, 00:40 UTCJul 19, 01:00 UTC20m
2026-07-18 CCA872 - Jul 18, 17:10 UTCJul 18, 20:35 UTC3h 25m
2026-07-18 CCA871 - Jul 18, 10:00 UTCJul 18, 15:40 UTC5h 40m
2026-07-18 CCA1491 - Jul 18, 00:29 UTCJul 18, 00:55 UTC25m
2026-07-17 CCA821 - Jul 17, 06:00 UTCJul 17, 15:20 UTC9h 20m
2026-07-16 CCA872 - Jul 16, 17:20 UTCJul 16, 20:49 UTC3h 30m
2026-07-16 CCA871 - Jul 16, 08:55 UTCJul 16, 14:40 UTC5h 45m
2026-07-16 CCA1404 - Jul 16, 06:20 UTCJul 16, 06:45 UTC25m
2026-07-15 CCA1403 - Jul 15, 23:10 UTCJul 15, 23:35 UTC25m
2026-07-15 CCA821 - Jul 15, 05:15 UTCJul 15, 15:15 UTC10h 0m
2026-07-14 CCA872 - Jul 14, 16:45 UTCJul 14, 20:15 UTC3h 30m
2026-07-14 CCA871 - Jul 14, 08:45 UTCJul 14, 14:45 UTC6h 0m
2026-07-13 CCA1404 - Jul 13, 23:00 UTCJul 14, 06:45 UTC7h 45m
2026-07-13 CCA724 - Jul 13, 11:50 UTCJul 13, 12:15 UTC25m
2026-07-13 CCA723 - Jul 13, 07:20 UTCJul 13, 07:35 UTC15m
2026-07-12 CCA1414 - Jul 12, 15:05 UTCJul 12, 15:30 UTC25m
2026-07-12 CCA1413 - Jul 12, 07:45 UTCJul 12, 08:05 UTC20m
2026-07-12 CCA108 - Jul 12, 02:40 UTCJul 12, 02:55 UTC15m
2026-07-11 CCA107 - Jul 11, 12:45 UTCJul 11, 16:00 UTC3h 15m
2026-07-11 CCA902 - Jul 11, 05:31 UTCJul 11, 05:55 UTC25m
2026-07-11 CCA901 - Jul 11, 01:10 UTCJul 11, 01:30 UTC20m
2026-07-10 CCA872 - Jul 10, 17:45 UTCJul 10, 21:10 UTC3h 25m
2026-07-10 CCA871 - Jul 10, 09:30 UTCJul 10, 15:05 UTC5h 35m
2026-07-10 CCA902 - Jul 10, 05:50 UTCJul 10, 06:10 UTC20m
2026-07-10 CCA901 - Jul 10, 01:30 UTCJul 10, 01:45 UTC15m
2026-07-09 CCA872 - Jul 9, 16:40 UTCJul 9, 20:15 UTC3h 35m
2026-07-09 CCA871 - Jul 9, 09:05 UTCJul 9, 14:35 UTC5h 30m
2026-07-09 CCA1491 - Jul 9, 00:40 UTCJul 9, 01:00 UTC20m
2026-07-08 CCA872 - Jul 8, 16:30 UTCJul 8, 20:00 UTC3h 30m
2026-07-08 CCA871 - Jul 8, 14:30 UTCJul 8, 14:50 UTC20m
2026-07-08 CCA871 - Jul 8, 09:15 UTCJul 8, 11:50 UTC2h 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-1392 page for operator, model, and routing details .

Mode-S 7812DC frequently asked

What is Mode-S code 7812DC?
7812DC is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1392.
Where is Mode-S 7812DC registered?
Mode-S code 7812DC is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812DC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 23:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812DC, octal 36011334, decimal 7,869,148.
What flights does 7812DC operate?
Mode-S 7812DC has broadcast 20 distinct callsigns, including CCA872, CCA871, CCA821, CCA702, CCA1404.