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 3d ago
Flights observed
48
Distinct callsigns
13
Country
CN
Last broadcast
3d 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 13 distinct

Callsign Airline Flights Last seen
CCA139 Air China 21 2026-05-27
CCA140 Air China 15 2026-05-27
CCA1734 Air China 2 2026-05-26
CCA8352 Air China 1 2026-04-27
CCA8351 Air China 1 2026-04-27
CCA8305 - 1 2026-04-18
CCA728 Air China 1 2026-04-24
CCA727 Air China 1 2026-04-24
CCA1783 Air China 1 2026-04-29
CCA1738 Air China 1 2026-05-15
CCA1737 Air China 1 2026-05-15
CCA1733 Air China 1 2026-05-26
CCA1728 Air China 1 2026-05-07

Recent flights last 48

DateFlightRouteTakeoffLandingDuration
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
2026-05-22 CCA139 HGH → ICN May 22, 04:55 UTCMay 23, 03:00 UTC22h 4m
2026-05-22 CCA139 HGH → ICN May 22, 02:25 UTCMay 22, 03:00 UTC35m
2026-05-20 CCA140 ICN → HGH May 20, 05:00 UTCMay 20, 05:25 UTC25m
2026-05-20 CCA139 HGH → ICN May 20, 02:40 UTCMay 20, 03:15 UTC35m
2026-05-18 CCA140 ICN → HGH May 18, 04:55 UTCMay 18, 05:20 UTC25m
2026-05-18 CCA139 HGH → ICN May 18, 02:55 UTCMay 18, 03:25 UTC30m
2026-05-15 CCA1734 SZX → HGH May 15, 14:20 UTCMay 15, 14:30 UTC10m
2026-05-15 CCA1738 SZX → HGH May 15, 03:10 UTCMay 15, 03:20 UTC10m
2026-05-15 CCA1737 HGH → SZX May 15, 01:25 UTCMay 15, 01:35 UTC10m
2026-05-12 CCA140 ICN → HGH May 12, 05:00 UTCMay 12, 05:40 UTC40m
2026-05-12 CCA139 HGH → ICN May 12, 02:45 UTCMay 12, 03:10 UTC25m
2026-05-07 CCA1728 CAN → HGH May 7, 12:00 UTCMay 7, 12:10 UTC10m
2026-05-07 CCA140 ICN → HGH May 7, 05:00 UTCMay 7, 05:40 UTC40m
2026-05-07 CCA139 HGH → ICN May 7, 02:25 UTCMay 7, 03:10 UTC45m
2026-05-02 CCA140 ICN → HGH May 2, 04:55 UTCMay 2, 05:35 UTC40m
2026-05-02 CCA139 HGH → ICN May 2, 02:30 UTCMay 2, 03:10 UTC40m
2026-05-01 CCA139 HGH → ICN May 1, 05:00 UTCMay 2, 03:10 UTC22h 10m
2026-05-01 CCA139 HGH → ICN May 1, 02:50 UTCMay 1, 03:30 UTC40m
2026-04-30 CCA140 ICN → HGH Apr 30, 05:00 UTCMay 1, 03:30 UTC22h 30m
2026-04-30 CCA139 HGH → ICN Apr 30, 02:40 UTCApr 30, 03:10 UTC30m
2026-04-29 CCA139 HGH → ICN Apr 29, 05:35 UTCApr 30, 03:10 UTC21h 35m
2026-04-29 CCA1783 HGH → ZHA Apr 29, 01:40 UTCApr 29, 05:35 UTC3h 55m
2026-04-28 CCA140 ICN → HGH Apr 28, 04:55 UTCApr 29, 01:45 UTC20h 50m
2026-04-28 CCA139 HGH → ICN Apr 28, 02:15 UTCApr 28, 02:55 UTC40m
2026-04-27 CCA8352 ZUH → HGH Apr 27, 05:25 UTCApr 27, 05:35 UTC10m
2026-04-27 CCA8351 HGH → ZUH Apr 27, 03:00 UTCApr 27, 03:25 UTC25m
2026-04-24 CCA728 HKG → HGH Apr 24, 10:50 UTCApr 24, 11:15 UTC25m
2026-04-24 CCA727 HGH → HKG Apr 24, 08:45 UTCApr 24, 09:15 UTC30m
2026-04-23 CCA140 ICN → HGH Apr 23, 04:55 UTCApr 23, 05:40 UTC45m
2026-04-23 CCA139 HGH → ICN Apr 23, 02:30 UTCApr 23, 03:10 UTC40m
2026-04-18 CCA8305 - Apr 18, 02:15 UTCApr 18, 02:40 UTC25m
2026-04-16 CCA140 ICN → HGH Apr 16, 05:09 UTCApr 16, 05:24 UTC15m
2026-04-16 CCA140 ICN → HGH Apr 16, 04:54 UTCApr 16, 05:05 UTC10m
2026-04-16 CCA139 HGH → ICN Apr 16, 02:30 UTCApr 16, 03:04 UTC35m
2026-04-15 CCA140 ICN → HGH Apr 15, 05:00 UTCApr 15, 05:45 UTC45m
2026-04-15 CCA139 HGH → ICN Apr 15, 02:55 UTCApr 15, 03:10 UTC15m
2026-04-15 CCA139 HGH → ICN Apr 15, 02:30 UTCApr 15, 02:50 UTC20m
2026-04-14 CCA140 ICN → HGH Apr 14, 05:15 UTCApr 14, 05:50 UTC35m

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 3d 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 13 distinct callsigns, including CCA139, CCA140, CCA1734, CCA8352, CCA8351.