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 10d ago
Flights observed
77
Distinct callsigns
17
Country
CN
Last broadcast
10d ago

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 17 distinct

Callsign Airline Flights Last seen
CXA804 Xiamen Airlines 10 2026-05-10
CXA803 - 8 2026-05-09
CXA802 - 8 2026-04-29
CXA812 - 7 2026-05-04
CXA801 - 6 2026-04-28
CXA849 Xiamen Airlines 5 2026-05-18
CXA829 - 5 2026-04-30
CXA811 - 5 2026-05-03
CXA806 - 5 2026-04-14
CXA850 Xiamen Airlines 3 2026-05-18
CXA830 Xiamen Airlines 3 2026-05-01
CXA825 - 3 2026-05-06
CXA826 - 2 2026-05-07
CXA816 Xiamen Airlines 2 2026-05-02
CXA815 Xiamen Airlines 2 2026-05-02
CXA809 Xiamen Airlines 2 2026-05-17
CXA805 - 1 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-18 CXA850 HGH → FOC May 18, 18:45 UTCMay 19, 08:55 UTC14h 10m
2026-05-18 CXA849 FOC → JFK May 18, 02:55 UTCMay 18, 16:20 UTC13h 25m
2026-05-17 CXA849 FOC → JFK May 17, 07:20 UTCMay 18, 04:25 UTC21h 5m
2026-05-17 CXA849 FOC → JFK May 17, 06:45 UTCMay 18, 04:25 UTC21h 40m
2026-05-17 CXA809 FOC → NRT May 17, 03:10 UTCMay 17, 04:35 UTC1h 25m
2026-05-16 CXA809 FOC → NRT May 16, 07:20 UTCMay 17, 04:35 UTC21h 15m
2026-05-15 CXA850 HGH → FOC May 15, 18:50 UTCMay 16, 08:31 UTC13h 41m
2026-05-15 CXA849 FOC → JFK May 15, 03:05 UTCMay 15, 16:30 UTC13h 24m
2026-05-12 CXA850 HGH → FOC May 12, 02:45 UTCMay 12, 13:45 UTC11h 0m
2026-05-11 CXA849 FOC → JFK May 11, 06:55 UTCMay 11, 20:40 UTC13h 46m
2026-05-10 CXA804 MEL → XMN May 10, 01:55 UTCMay 10, 10:35 UTC8h 40m
2026-05-09 CXA803 - May 9, 14:20 UTCMay 9, 22:45 UTC8h 25m
2026-05-09 CXA804 MEL → XMN May 9, 01:40 UTCMay 9, 10:30 UTC8h 50m
2026-05-08 CXA803 - May 8, 14:55 UTCMay 8, 22:55 UTC8h 0m
2026-05-07 CXA826 - May 7, 16:10 UTCMay 8, 15:15 UTC23h 5m
2026-05-07 CXA826 - May 7, 10:50 UTCMay 7, 16:50 UTC6h 0m
2026-05-06 CXA825 - May 6, 09:20 UTCMay 7, 04:40 UTC19h 19m
2026-05-06 CXA825 - May 6, 08:45 UTCMay 7, 04:40 UTC19h 54m
2026-05-06 CXA825 - May 6, 05:35 UTCMay 7, 04:40 UTC23h 4m
2026-05-06 CXA804 MEL → XMN May 6, 01:45 UTCMay 7, 01:15 UTC23h 29m
2026-05-05 CXA803 DRW → MEL May 5, 05:30 UTCMay 5, 23:50 UTC18h 20m
2026-05-05 CXA804 MEL → XMN May 5, 01:50 UTCMay 5, 23:50 UTC22h 0m
2026-05-04 CXA803 - May 4, 16:50 UTCMay 5, 00:15 UTC7h 26m
2026-05-04 CXA803 - May 4, 01:20 UTCMay 5, 00:15 UTC22h 56m
2026-05-04 CXA812 - May 4, 00:50 UTCMay 4, 20:40 UTC19h 51m
2026-05-03 CXA812 - May 3, 21:20 UTCMay 4, 20:40 UTC23h 21m
2026-05-03 CXA812 - May 3, 19:50 UTCMay 4, 17:20 UTC21h 30m
2026-05-03 CXA811 - May 3, 09:55 UTCMay 3, 16:50 UTC6h 55m
2026-05-02 CXA816 NRT → XMN May 2, 06:15 UTCMay 2, 07:40 UTC1h 25m
2026-05-02 CXA815 XMN → NRT May 2, 03:00 UTCMay 2, 04:20 UTC1h 20m
2026-05-01 CXA830 LAX → XMN May 1, 07:10 UTCMay 1, 19:20 UTC12h 10m
2026-04-30 CXA829 - Apr 30, 15:00 UTCMay 1, 02:25 UTC11h 25m
2026-04-30 CXA804 MEL → XMN Apr 30, 03:35 UTCApr 30, 11:50 UTC8h 15m
2026-04-29 CXA803 - Apr 29, 08:34 UTCApr 30, 02:00 UTC17h 25m
2026-04-29 CXA802 - Apr 29, 01:45 UTCApr 29, 22:25 UTC20h 41m
2026-04-28 CXA801 - Apr 28, 14:55 UTCApr 28, 23:29 UTC8h 35m
2026-04-27 CXA830 LAX → XMN Apr 27, 07:05 UTCApr 27, 19:25 UTC12h 20m
2026-04-26 CXA829 - Apr 26, 09:20 UTCApr 27, 03:35 UTC18h 15m
2026-04-26 CXA829 - Apr 26, 08:25 UTCApr 27, 03:35 UTC19h 10m
2026-04-26 CXA829 - Apr 26, 05:20 UTCApr 27, 03:35 UTC22h 15m
2026-04-26 CXA804 MEL → XMN Apr 26, 01:45 UTCApr 26, 18:10 UTC16h 25m
2026-04-25 CXA804 MEL → XMN Apr 25, 05:20 UTCApr 25, 23:15 UTC17h 55m
2026-04-25 CXA804 MEL → XMN Apr 25, 01:40 UTCApr 25, 23:15 UTC21h 35m
2026-04-24 CXA803 - Apr 24, 09:30 UTCApr 24, 23:40 UTC14h 10m
2026-04-24 CXA804 MEL → XMN Apr 24, 02:40 UTCApr 24, 23:40 UTC21h 0m
2026-04-23 CXA803 - Apr 23, 16:25 UTCApr 24, 00:50 UTC8h 24m
2026-04-23 CXA816 NRT → XMN Apr 23, 06:10 UTCApr 23, 07:40 UTC1h 30m
2026-04-23 CXA815 XMN → NRT Apr 23, 03:10 UTCApr 23, 04:20 UTC1h 10m
2026-04-22 CXA830 LAX → XMN Apr 22, 07:15 UTCApr 22, 21:20 UTC14h 5m
2026-04-21 CXA829 - Apr 21, 16:40 UTCApr 22, 02:40 UTC10h 0m

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 10d ago.
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 17 distinct callsigns, including CXA804, CXA803, CXA802, CXA812, CXA801.