Apparatus

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sensors Mode-S transponder

7810BB

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8799 · AIRBUS A-321

Hex
7810BB
Octal
36010273
Decimal
7,868,603
Country
CN
Tail
B-8799
Type
A321
No current signal · last broadcast 3h ago
Flights observed
88
Distinct callsigns
16
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 7810BB.

Country allocation

The ICAO 24-bit address 7810BB 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 16 distinct

Callsign Airline Flights Last seen
CCA139 - 38 2026-07-09
CCA140 - 25 2026-07-09
CCA1783 - 5 2026-07-13
CCA727 - 3 2026-07-14
CCA728 - 2 2026-07-01
CCA1738 Air China 2 2026-06-02
CCA1737 Air China 2 2026-06-02
CCA1734 Air China 2 2026-05-26
CCA1728 - 2 2026-07-05
CCA8356 - 1 2026-07-07
CCA8352 Air China 1 2026-04-27
CCA8351 Air China 1 2026-04-27
CCA8305 - 1 2026-04-18
CCA1733 Air China 1 2026-05-26
CCA146 Air China 1 2026-05-30
CCA145 Air China 1 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CCA727 - Jul 14, 08:10 UTCJul 14, 08:55 UTC45m
2026-07-13 CCA1783 - Jul 13, 09:00 UTCJul 14, 04:20 UTC19h 20m
2026-07-13 CCA1783 - Jul 13, 04:15 UTCJul 14, 02:05 UTC21h 50m
2026-07-13 CCA1783 - Jul 13, 01:30 UTCJul 13, 01:45 UTC15m
2026-07-10 CCA1783 - Jul 10, 01:20 UTCJul 10, 01:35 UTC15m
2026-07-09 CCA140 - Jul 9, 05:00 UTCJul 10, 01:35 UTC20h 35m
2026-07-09 CCA139 - Jul 9, 02:25 UTCJul 9, 03:15 UTC50m
2026-07-08 CCA139 - Jul 8, 06:50 UTCJul 9, 03:15 UTC20h 25m
2026-07-08 CCA139 ICN → ICN Jul 8, 06:30 UTCJul 9, 03:15 UTC20h 45m
2026-07-08 CCA139 - Jul 8, 02:25 UTCJul 8, 03:05 UTC40m
2026-07-07 CCA8356 - Jul 7, 06:25 UTCJul 7, 11:05 UTC4h 40m
2026-07-05 CCA1728 - Jul 5, 15:00 UTCJul 5, 15:15 UTC15m
2026-07-05 CCA140 - Jul 5, 05:10 UTCJul 5, 05:55 UTC45m
2026-07-05 CCA139 - Jul 5, 02:55 UTCJul 5, 03:45 UTC50m
2026-07-04 CCA139 - Jul 4, 04:50 UTCJul 5, 03:45 UTC22h 55m
2026-07-04 CCA139 - Jul 4, 02:30 UTCJul 4, 03:10 UTC40m
2026-07-03 CCA139 ICN → ICN Jul 3, 05:00 UTCJul 4, 03:10 UTC22h 10m
2026-07-03 CCA139 - Jul 3, 02:40 UTCJul 3, 03:20 UTC40m
2026-07-02 CCA140 ICN → ICN Jul 2, 05:25 UTCJul 3, 03:20 UTC21h 55m
2026-07-02 CCA139 - Jul 2, 02:50 UTCJul 2, 03:35 UTC45m
2026-07-01 CCA728 - Jul 1, 11:30 UTCJul 1, 11:50 UTC20m
2026-07-01 CCA727 - Jul 1, 09:15 UTCJul 1, 09:40 UTC25m
2026-06-15 CCA140 - Jun 15, 05:00 UTCJun 15, 05:50 UTC50m
2026-06-15 CCA139 - Jun 15, 02:20 UTCJun 15, 03:00 UTC40m
2026-06-14 CCA140 - Jun 14, 04:55 UTCJun 14, 05:40 UTC45m
2026-06-14 CCA139 - Jun 14, 02:30 UTCJun 14, 03:10 UTC40m
2026-06-11 CCA140 ICN → HGH Jun 11, 05:05 UTCJun 11, 05:35 UTC30m
2026-06-11 CCA139 HGH → ICN Jun 11, 02:35 UTCJun 11, 03:05 UTC30m
2026-06-10 CCA140 ICN → HGH Jun 10, 05:05 UTCJun 11, 03:05 UTC22h 0m
2026-06-10 CCA139 HGH → ICN Jun 10, 02:40 UTCJun 10, 03:15 UTC35m
2026-06-08 CCA140 ICN → HGH Jun 8, 04:50 UTCJun 8, 05:20 UTC30m
2026-06-08 CCA139 HGH → ICN Jun 8, 02:35 UTCJun 8, 03:05 UTC30m
2026-06-05 CCA140 ICN → HGH Jun 5, 04:55 UTCJun 5, 05:25 UTC30m
2026-06-05 CCA139 HGH → ICN Jun 5, 02:20 UTCJun 5, 02:55 UTC35m
2026-06-03 CCA140 ICN → HGH Jun 3, 05:05 UTCJun 3, 05:25 UTC20m
2026-06-03 CCA139 HGH → ICN Jun 3, 02:35 UTCJun 3, 03:00 UTC25m
2026-06-02 CCA1738 SZX → HGH Jun 2, 03:40 UTCJun 2, 03:50 UTC10m
2026-06-02 CCA1737 HGH → SZX Jun 2, 00:45 UTCJun 2, 01:35 UTC50m
2026-05-30 CCA146 NRT → HGH May 30, 12:15 UTCMay 30, 13:50 UTC1h 35m
2026-05-30 CCA145 HGH → NRT May 30, 08:30 UTCMay 30, 09:55 UTC1h 25m
2026-05-27 CCA140 ICN → HGH May 27, 05:14 UTCMay 27, 05:40 UTC25m
2026-05-27 CCA139 HGH → ICN May 27, 02:24 UTCMay 27, 02:59 UTC35m
2026-05-26 CCA1734 SZX → HGH May 26, 11:39 UTCMay 26, 11:50 UTC10m
2026-05-26 CCA1733 HGH → SZX May 26, 09:25 UTCMay 26, 10:20 UTC55m
2026-05-25 CCA140 ICN → HGH May 25, 05:00 UTCMay 25, 05:25 UTC25m
2026-05-25 CCA139 HGH → ICN May 25, 02:30 UTCMay 25, 03:05 UTC35m
2026-05-24 CCA139 HGH → ICN May 24, 04:55 UTCMay 25, 03:05 UTC22h 10m
2026-05-24 CCA139 HGH → ICN May 24, 02:55 UTCMay 24, 03:25 UTC30m
2026-05-23 CCA140 ICN → HGH May 23, 05:00 UTCMay 24, 03:25 UTC22h 25m
2026-05-23 CCA139 HGH → ICN May 23, 02:25 UTCMay 23, 03:00 UTC34m

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-8799 page for operator, model, and routing details .

Mode-S 7810BB frequently asked

What is Mode-S code 7810BB?
7810BB is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8799.
Where is Mode-S 7810BB registered?
Mode-S code 7810BB is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7810BB broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7810BB, octal 36010273, decimal 7,868,603.
What flights does 7810BB operate?
Mode-S 7810BB has broadcast 16 distinct callsigns, including CCA139, CCA140, CCA1783, CCA727, CCA728.