Apparatus

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sensors Mode-S transponder

7812BD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1357 · BOEING 787-9 Dreamliner

Hex
7812BD
Octal
36011275
Decimal
7,869,117
Country
CN
Tail
B-1357
Type
B789
No current signal · last broadcast Jul 26, 09:40 UTC
Flights observed
164
Distinct callsigns
18
Country
CN
Last broadcast
Jul 26, 09:40 UTC

Last known position

Most recent position reported by Mode-S 7812BD.

Country allocation

The ICAO 24-bit address 7812BD 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 18 distinct

Callsign Airline Flights Last seen
CXA850 Xiamen Airlines 24 2026-07-24
CXA849 Xiamen Airlines 23 2026-07-24
CXA809 Xiamen Airlines 23 2026-07-26
CXA810 Xiamen Airlines 13 2026-07-26
CXA802 - 11 2026-06-16
CXA804 Xiamen Airlines 10 2026-05-10
CXA801 - 10 2026-06-15
CXA803 - 9 2026-06-14
CXA812 - 7 2026-05-04
CXA829 - 6 2026-06-16
CXA811 - 5 2026-05-03
CXA806 - 5 2026-04-14
CXA830 - 4 2026-06-17
CXA825 - 4 2026-06-10
CXA826 - 3 2026-06-11
CXA815 - 3 2026-06-18
CXA816 Xiamen Airlines 2 2026-05-02
CXA805 - 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CXA810 NRT → FOC Jul 26, 09:30 UTCJul 26, 09:40 UTC10m
2026-07-26 CXA810 NRT → FOC Jul 26, 06:55 UTCJul 26, 08:25 UTC1h 30m
2026-07-26 CXA809 FOC → NRT Jul 26, 02:00 UTCJul 26, 04:50 UTC2h 50m
2026-07-24 CXA850 HGH → FOC Jul 24, 18:25 UTCJul 25, 09:00 UTC14h 35m
2026-07-24 CXA849 FOC → JFK Jul 24, 01:45 UTCJul 24, 15:50 UTC14h 5m
2026-07-23 CXA810 NRT → FOC Jul 23, 07:05 UTCJul 23, 08:40 UTC1h 35m
2026-07-23 CXA809 FOC → NRT Jul 23, 03:00 UTCJul 23, 04:50 UTC1h 50m
2026-07-22 CXA809 FOC → NRT Jul 22, 01:55 UTCJul 22, 04:45 UTC2h 50m
2026-07-21 CXA809 FOC → NRT Jul 21, 07:20 UTCJul 22, 04:45 UTC21h 25m
2026-07-21 CXA850 HGH → FOC Jul 21, 07:05 UTCJul 22, 04:45 UTC21h 40m
2026-07-20 CXA850 HGH → FOC Jul 20, 18:35 UTCJul 21, 09:00 UTC14h 24m
2026-07-20 CXA849 FOC → JFK Jul 20, 02:55 UTCJul 20, 16:15 UTC13h 20m
2026-07-19 CXA810 - Jul 19, 09:30 UTCJul 19, 09:40 UTC10m
2026-07-19 CXA810 - Jul 19, 06:55 UTCJul 19, 08:25 UTC1h 30m
2026-07-19 CXA809 FOC → NRT Jul 19, 02:00 UTCJul 19, 04:55 UTC2h 55m
2026-07-17 CXA850 - Jul 17, 18:25 UTCJul 18, 08:30 UTC14h 6m
2026-07-17 CXA849 - Jul 17, 02:50 UTCJul 17, 16:10 UTC13h 20m
2026-07-16 CXA849 - Jul 16, 07:20 UTCJul 17, 04:25 UTC21h 5m
2026-07-16 CXA849 - Jul 16, 06:40 UTCJul 17, 04:25 UTC21h 45m
2026-07-16 CXA809 - Jul 16, 03:10 UTCJul 16, 05:00 UTC1h 50m
2026-07-15 CXA809 - Jul 15, 07:20 UTCJul 16, 05:00 UTC21h 40m
2026-07-15 CXA809 NRT → NRT Jul 15, 06:45 UTCJul 16, 05:00 UTC22h 15m
2026-07-15 CXA809 - Jul 15, 03:05 UTCJul 15, 04:45 UTC1h 40m
2026-07-14 CXA850 - Jul 14, 07:30 UTCJul 15, 04:45 UTC21h 14m
2026-07-13 CXA850 - Jul 13, 18:50 UTCJul 14, 09:10 UTC14h 20m
2026-07-13 CXA849 - Jul 13, 02:55 UTCJul 13, 16:25 UTC13h 30m
2026-07-12 CXA849 - Jul 12, 11:20 UTCJul 13, 11:10 UTC23h 50m
2026-07-12 CXA849 - Jul 12, 10:40 UTCJul 13, 09:15 UTC22h 35m
2026-07-11 CXA850 - Jul 11, 15:05 UTCJul 12, 09:10 UTC18h 5m
2026-07-11 CXA850 JFK → NRT Jul 11, 11:50 UTCJul 12, 09:10 UTC21h 20m
2026-07-10 CXA849 - Jul 10, 01:55 UTCJul 10, 16:20 UTC14h 25m
2026-07-09 CXA810 - Jul 9, 06:50 UTCJul 9, 08:25 UTC1h 35m
2026-07-09 CXA809 - Jul 9, 03:10 UTCJul 9, 04:55 UTC1h 45m
2026-07-08 CXA809 - Jul 8, 07:20 UTCJul 9, 04:55 UTC21h 35m
2026-07-08 CXA809 - Jul 8, 06:40 UTCJul 9, 04:55 UTC22h 15m
2026-07-08 CXA809 - Jul 8, 03:10 UTCJul 8, 04:55 UTC1h 45m
2026-07-07 CXA809 - Jul 7, 07:20 UTCJul 8, 04:55 UTC21h 35m
2026-07-07 CXA850 - Jul 7, 06:35 UTCJul 8, 04:55 UTC22h 20m
2026-07-06 CXA850 - Jul 6, 18:45 UTCJul 7, 08:30 UTC13h 45m
2026-07-06 CXA849 - Jul 6, 02:55 UTCJul 6, 16:15 UTC13h 20m
2026-07-05 CXA849 - Jul 5, 07:20 UTCJul 6, 04:30 UTC21h 10m
2026-07-05 CXA810 - Jul 5, 06:40 UTCJul 6, 04:30 UTC21h 50m
2026-07-04 CXA850 - Jul 4, 09:45 UTCJul 5, 04:30 UTC18h 45m
2026-07-04 CXA850 - Jul 4, 03:20 UTCJul 5, 03:15 UTC23h 55m
2026-07-03 CXA850 - Jul 3, 20:30 UTCJul 4, 11:55 UTC15h 25m
2026-07-03 CXA849 - Jul 3, 02:55 UTCJul 3, 16:10 UTC13h 15m
2026-07-02 CXA849 - Jul 2, 07:20 UTCJul 3, 04:30 UTC21h 10m
2026-07-02 CXA810 - Jul 2, 06:55 UTCJul 3, 04:30 UTC21h 35m
2026-07-02 CXA809 - Jul 2, 02:50 UTCJul 2, 04:25 UTC1h 35m
2026-07-01 CXA809 - Jul 1, 07:20 UTCJul 2, 04:25 UTC21h 5m

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-1357 page for operator, model, and routing details .

Mode-S 7812BD frequently asked

What is Mode-S code 7812BD?
7812BD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1357.
Where is Mode-S 7812BD registered?
Mode-S code 7812BD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7812BD broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 09:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7812BD, octal 36011275, decimal 7,869,117.
What flights does 7812BD operate?
Mode-S 7812BD has broadcast 18 distinct callsigns, including CXA850, CXA849, CXA809, CXA810, CXA802.