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
Broadcasting now · callsign CXA850 · 39,975 ft
Flights observed
140
Distinct callsigns
18
Country
CN
Last broadcast
6h ago

Current position

7812BD is currently broadcasting. Map zoomed to live position.

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 - 19 2026-07-13
CXA849 - 18 2026-07-13
CXA809 - 14 2026-07-09
CXA802 - 11 2026-06-16
CXA804 Xiamen Airlines 10 2026-05-10
CXA801 - 10 2026-06-15
CXA803 - 9 2026-06-14
CXA810 - 8 2026-07-09
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
2026-07-13 CXA850 - Jul 13, 18:50 UTCJul 14, 02:25 UTC7h 35m
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
2026-07-01 CXA810 - Jul 1, 06:40 UTCJul 2, 04:25 UTC21h 45m
2026-07-01 CXA809 - Jul 1, 03:05 UTCJul 1, 04:35 UTC1h 30m
2026-06-30 CXA850 - Jun 30, 07:20 UTCJul 1, 04:35 UTC21h 15m
2026-06-30 CXA850 - Jun 30, 06:50 UTCJul 1, 04:35 UTC21h 45m
2026-06-29 CXA850 - Jun 29, 18:30 UTCJun 30, 08:50 UTC14h 21m
2026-06-29 CXA849 - Jun 29, 02:45 UTCJun 29, 15:49 UTC13h 5m
2026-06-28 CXA849 - Jun 28, 07:20 UTCJun 29, 04:20 UTC21h 0m
2026-06-28 CXA810 - Jun 28, 07:05 UTCJun 29, 04:20 UTC21h 15m
2026-06-27 CXA809 - Jun 27, 09:19 UTCJun 28, 04:20 UTC19h 0m
2026-06-27 CXA850 - Jun 27, 07:45 UTCJun 28, 04:20 UTC20h 35m
2026-06-26 CXA850 - Jun 26, 18:54 UTCJun 27, 09:40 UTC14h 45m
2026-06-26 CXA849 - Jun 26, 02:50 UTCJun 26, 16:20 UTC13h 30m
2026-06-25 CXA810 - Jun 25, 06:44 UTCJun 25, 08:30 UTC1h 45m
2026-06-25 CXA809 - Jun 25, 03:10 UTCJun 25, 04:54 UTC1h 45m
2026-06-22 CXA850 - Jun 22, 19:05 UTCJun 23, 10:10 UTC15h 5m
2026-06-22 CXA849 - Jun 22, 02:45 UTCJun 22, 15:50 UTC13h 5m
2026-06-21 CXA810 - Jun 21, 06:40 UTCJun 21, 08:25 UTC1h 45m
2026-06-21 CXA809 - Jun 21, 03:00 UTCJun 21, 04:34 UTC1h 35m
2026-06-20 CXA809 - Jun 20, 07:19 UTCJun 21, 04:34 UTC21h 15m
2026-06-20 CXA850 - Jun 20, 06:54 UTCJun 21, 04:34 UTC21h 40m
2026-06-19 CXA850 - Jun 19, 19:09 UTCJun 20, 08:44 UTC13h 35m
2026-06-19 CXA849 - Jun 19, 02:59 UTCJun 19, 16:14 UTC13h 15m
2026-06-18 - - Jun 18, 09:40 UTCJun 18, 09:50 UTC10m
2026-06-18 CXA810 - Jun 18, 06:50 UTCJun 18, 08:30 UTC1h 40m

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?
Yes. Mode-S 7812BD is currently airborne.
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, CXA802, CXA804.