Apparatus

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sensors Mode-S transponder

7810B3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1580 · BOEING 737-800

Hex
7810B3
Octal
36010263
Decimal
7,868,595
Country
CN
Tail
B-1580
Type
B738
No current signal · last broadcast 8d ago
Flights observed
61
Distinct callsigns
20
Country
CN
Last broadcast
8d ago

Last known position

Most recent position reported by Mode-S 7810B3.

Country allocation

The ICAO 24-bit address 7810B3 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
CXA8781 Xiamen Airlines 6 2026-06-09
CXA8044 - 3 2026-07-11
CXA895 Xiamen Airlines 2 2026-07-26
CXA8871 - 2 2026-07-06
CXA8818 Xiamen Airlines 2 2026-05-21
CXA8697 Xiamen Airlines 2 2026-05-17
CXA8623 - 2 2026-07-06
CXA8523 - 2 2026-05-22
CXA8397 - 2 2026-07-26
CXA8346 - 2 2026-07-06
CXA8345 - 2 2026-07-10
CXA8341 - 2 2026-07-23
CXA8902 - 1 2026-05-01
CXA8901 - 1 2026-05-01
CXA8867 - 1 2026-07-21
CXA8791 Xiamen Airlines 1 2026-06-19
CXA8727 Xiamen Airlines 1 2026-05-16
CXA8698 Xiamen Airlines 1 2026-05-25
CXA8692 - 1 2026-05-12
CXA8691 - 1 2026-05-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CXA895 XMN → PNH Jul 26, 07:15 UTCJul 26, 11:50 UTC4h 35m
2026-07-26 CXA8397 - Jul 26, 00:25 UTCJul 26, 04:50 UTC4h 25m
2026-07-25 CXA8397 - Jul 25, 02:50 UTCJul 26, 01:30 UTC22h 40m
2026-07-24 CXA8375 XMN → NNG Jul 24, 22:55 UTCJul 24, 23:40 UTC45m
2026-07-24 CXA8437 FOC → KMG Jul 24, 10:05 UTCJul 24, 10:35 UTC30m
2026-07-23 CXA8342 - Jul 23, 08:35 UTCJul 23, 08:55 UTC20m
2026-07-23 CXA8341 - Jul 23, 05:25 UTCJul 23, 05:50 UTC25m
2026-07-21 CXA8867 - Jul 21, 00:00 UTCJul 21, 03:50 UTC3h 50m
2026-07-18 CXA8341 - Jul 18, 05:30 UTCJul 18, 08:50 UTC3h 20m
2026-07-16 CXA8181 - Jul 16, 08:45 UTCJul 16, 13:30 UTC4h 45m
2026-07-11 CXA8044 - Jul 11, 06:30 UTCJul 11, 07:20 UTC50m
2026-07-10 CXA8345 - Jul 10, 03:20 UTCJul 10, 14:25 UTC11h 5m
2026-07-06 CXA8346 - Jul 6, 18:05 UTCJul 6, 18:15 UTC10m
2026-07-06 CXA8871 - Jul 6, 09:55 UTCJul 6, 10:05 UTC10m
2026-07-06 CXA8624 - Jul 6, 07:30 UTCJul 6, 07:40 UTC10m
2026-07-06 CXA8623 - Jul 6, 02:35 UTCJul 6, 02:45 UTC10m
2026-07-05 CXA8345 - Jul 5, 14:30 UTCJul 5, 14:50 UTC20m
2026-07-05 CXA8131 - Jul 5, 05:50 UTCJul 5, 06:05 UTC15m
2026-07-04 CXA8390 - Jul 4, 17:50 UTCJul 4, 18:00 UTC10m
2026-06-26 CXA8083 - Jun 26, 03:50 UTCJun 26, 04:00 UTC10m
2026-06-22 CXA8221 - Jun 22, 05:44 UTCJun 22, 05:54 UTC10m
2026-06-20 CXA8682 - Jun 20, 07:09 UTCJun 20, 07:19 UTC10m
2026-06-20 CXA8576 HSN → XMN Jun 20, 02:04 UTCJun 20, 02:14 UTC10m
2026-06-19 CXA8344 SZX → HGH Jun 19, 14:34 UTCJun 19, 14:44 UTC10m
2026-06-19 CXA8791 FOC → HAK Jun 19, 12:34 UTCJun 19, 13:04 UTC30m
2026-06-17 CXA8070 - Jun 17, 11:25 UTCJun 17, 12:00 UTC35m
2026-06-11 CXA8044 CGQ → HGH Jun 11, 07:15 UTCJun 11, 07:30 UTC15m
2026-06-10 CXA895 XMN → PNH Jun 10, 07:50 UTCJun 10, 08:00 UTC10m
2026-06-09 CXA8781 SHE → FOC Jun 9, 04:15 UTCJun 9, 08:10 UTC3h 55m
2026-06-09 CXA8781 SHE → FOC Jun 9, 01:35 UTCJun 9, 02:05 UTC30m
2026-06-08 CXA8781 SHE → FOC Jun 8, 04:25 UTCJun 8, 08:55 UTC4h 30m
2026-06-07 CXA8781 SHE → FOC Jun 7, 00:14 UTCJun 7, 08:05 UTC7h 50m
2026-06-06 CXA8781 SHE → FOC Jun 6, 07:40 UTCJun 7, 04:30 UTC20h 50m
2026-06-06 CXA8781 SHE → FOC Jun 6, 04:50 UTCJun 7, 04:30 UTC23h 40m
2026-06-02 CXA8346 SZX → HGH Jun 2, 14:45 UTCJun 2, 14:55 UTC10m
2026-06-02 CXA8871 - Jun 2, 07:10 UTCJun 2, 07:20 UTC10m
2026-06-02 CXA8623 - Jun 2, 01:35 UTCJun 2, 01:45 UTC10m
2026-06-01 CXA8088 SHE → HGH Jun 1, 00:00 UTCJun 1, 13:55 UTC13h 55m
2026-05-31 CXA8096 SHE → PVG May 31, 09:15 UTCJun 1, 00:00 UTC14h 45m
2026-05-30 CXA8044 CGQ → HGH May 30, 07:00 UTCMay 30, 07:25 UTC25m
2026-05-29 CXA820 MNL → XMN May 29, 16:10 UTCMay 29, 17:45 UTC1h 35m
2026-05-29 CXA819 XMN → MNL May 29, 07:35 UTCMay 29, 15:05 UTC7h 30m
2026-05-28 CXA8230 TSN → HGH May 28, 03:55 UTCMay 28, 12:30 UTC8h 35m
2026-05-25 CXA8698 HAN → FOC May 25, 10:40 UTCMay 25, 10:55 UTC15m
2026-05-22 CXA8523 - May 22, 13:55 UTCMay 22, 14:20 UTC25m
2026-05-21 CXA8818 HRB → HGH May 21, 09:40 UTCMay 22, 07:00 UTC21h 20m
2026-05-21 CXA8079 XMN → DLC May 21, 00:25 UTCMay 21, 09:55 UTC9h 30m
2026-05-18 CXA869 XMN → HAN May 18, 06:01 UTCMay 18, 10:10 UTC4h 10m
2026-05-17 CXA8526 - May 17, 13:50 UTCMay 18, 02:05 UTC12h 15m
2026-05-17 CXA8697 FOC → HAN May 17, 07:10 UTCMay 17, 11:01 UTC3h 50m

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-1580 page for operator, model, and routing details .

Mode-S 7810B3 frequently asked

What is Mode-S code 7810B3?
7810B3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1580.
Where is Mode-S 7810B3 registered?
Mode-S code 7810B3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7810B3 broadcasting right now?
No active broadcast right now. Last signal was 8d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7810B3, octal 36010263, decimal 7,868,595.
What flights does 7810B3 operate?
Mode-S 7810B3 has broadcast 20 distinct callsigns, including CXA8781, CXA8044, CXA895, CXA8871, CXA8818.