Apparatus

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sensors Mode-S transponder

7813B5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1090 · AIRBUS A-321neo

Hex
7813B5
Octal
36011665
Decimal
7,869,365
Country
CN
Tail
B-1090
Type
A21N
No current signal · last broadcast 12h ago
Flights observed
66
Distinct callsigns
20
Country
CN
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 7813B5.

Country allocation

The ICAO 24-bit address 7813B5 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
CSN3040 China Southern Airlines 12 2026-05-26
CSN3039 China Southern Airlines 7 2026-05-23
CSN357 China Southern Airlines 6 2026-05-28
CSN364 China Southern Airlines 5 2026-05-24
CSN363 China Southern Airlines 5 2026-05-24
CSN358 China Southern Airlines 5 2026-05-28
CSN8099 China Southern Airlines 4 2026-05-09
CSN8100 China Southern Airlines 3 2026-05-09
CSN5015 China Southern Airlines 3 2026-04-29
CSN5016 China Southern Airlines 2 2026-04-29
CSN361 - 2 2026-04-16
CSN8149 China Southern Airlines 1 2026-05-05
CSN6091 China Southern Airlines 1 2026-04-14
CSN3994 - 1 2026-05-30
CSN362 China Southern Airlines 1 2026-04-17
CSN3615 China Southern Airlines 1 2026-05-22
CSN352 China Southern Airlines 1 2026-04-23
CSN351 China Southern Airlines 1 2026-04-22
CSN3407 China Southern Airlines 1 2026-04-23
CSN340 China Southern Airlines 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN3994 - May 30, 01:10 UTCMay 30, 01:20 UTC10m
2026-05-28 CSN358 BKK → CAN May 28, 04:35 UTCMay 28, 06:15 UTC1h 40m
2026-05-28 CSN357 CAN → BKK May 28, 00:45 UTCMay 28, 02:55 UTC2h 10m
2026-05-27 CSN358 BKK → CAN May 27, 04:24 UTCMay 27, 05:09 UTC45m
2026-05-27 CSN357 CAN → BKK May 27, 02:09 UTCMay 27, 02:54 UTC45m
2026-05-26 CSN3040 SIN → CAN May 26, 13:19 UTCMay 26, 13:40 UTC20m
2026-05-26 CSN3040 SIN → CAN May 26, 10:14 UTCMay 26, 10:39 UTC25m
2026-05-24 CSN364 BKK → CAN May 24, 12:10 UTCMay 24, 12:55 UTC45m
2026-05-24 CSN363 CAN → BKK May 24, 09:45 UTCMay 24, 10:20 UTC35m
2026-05-23 CSN3040 SIN → CAN May 23, 13:30 UTCMay 23, 13:45 UTC15m
2026-05-23 CSN3040 SIN → CAN May 23, 10:30 UTCMay 23, 10:50 UTC20m
2026-05-23 CSN3039 CAN → SIN May 23, 08:15 UTCMay 23, 08:35 UTC20m
2026-05-22 CSN3615 CAN → HRB May 22, 03:00 UTCMay 22, 03:15 UTC15m
2026-05-19 CSN3040 SIN → CAN May 19, 13:20 UTCMay 19, 13:35 UTC15m
2026-05-19 CSN3040 SIN → CAN May 19, 10:25 UTCMay 19, 10:40 UTC15m
2026-05-19 CSN3039 CAN → SIN May 19, 05:05 UTCMay 19, 08:35 UTC3h 30m
2026-05-12 CSN364 BKK → CAN May 12, 12:15 UTCMay 12, 12:55 UTC40m
2026-05-12 CSN363 CAN → BKK May 12, 09:45 UTCMay 12, 10:30 UTC45m
2026-05-11 CSN358 BKK → CAN May 11, 04:45 UTCMay 11, 05:25 UTC40m
2026-05-11 CSN357 CAN → BKK May 11, 00:54 UTCMay 11, 03:00 UTC2h 5m
2026-05-09 CSN8100 BKK → CAN May 9, 07:10 UTCMay 9, 07:50 UTC40m
2026-05-09 CSN8099 CAN → BKK May 9, 03:15 UTCMay 9, 05:35 UTC2h 20m
2026-05-06 CSN358 BKK → CAN May 6, 04:35 UTCMay 6, 05:00 UTC25m
2026-05-06 CSN357 CAN → BKK May 6, 00:46 UTCMay 6, 02:55 UTC2h 10m
2026-05-05 CSN364 BKK → CAN May 5, 12:15 UTCMay 5, 12:45 UTC30m
2026-05-05 CSN363 CAN → BKK May 5, 08:40 UTCMay 5, 10:55 UTC2h 15m
2026-05-05 CSN8149 CAN → VTE May 5, 01:35 UTCMay 5, 01:45 UTC10m
2026-05-02 CSN3040 SIN → CAN May 2, 13:00 UTCMay 2, 13:20 UTC20m
2026-05-02 CSN3040 SIN → CAN May 2, 10:10 UTCMay 2, 10:25 UTC15m
2026-05-02 CSN3039 CAN → SIN May 2, 05:05 UTCMay 2, 08:35 UTC3h 30m
2026-04-29 CSN5016 DAC → CAN Apr 29, 07:29 UTCApr 29, 08:30 UTC1h 0m
2026-04-29 CSN5015 CAN → DAC Apr 29, 04:39 UTCApr 29, 06:15 UTC1h 35m
2026-04-27 CSN3040 SIN → CAN Apr 27, 13:20 UTCApr 27, 13:35 UTC15m
2026-04-27 CSN3040 SIN → CAN Apr 27, 10:20 UTCApr 27, 10:40 UTC20m
2026-04-27 CSN3039 CAN → SIN Apr 27, 08:20 UTCApr 27, 08:30 UTC10m
2026-04-27 CSN3039 CAN → SIN Apr 27, 05:25 UTCApr 27, 05:35 UTC10m
2026-04-26 CSN5016 DAC → CAN Apr 26, 07:25 UTCApr 26, 08:15 UTC50m
2026-04-26 CSN5015 CAN → DAC Apr 26, 04:35 UTCApr 26, 05:40 UTC1h 5m
2026-04-26 CSN5015 CAN → DAC Apr 26, 01:55 UTCApr 26, 02:05 UTC10m
2026-04-25 CSN364 BKK → CAN Apr 25, 12:20 UTCApr 25, 12:50 UTC30m
2026-04-25 CSN363 CAN → BKK Apr 25, 10:10 UTCApr 25, 10:45 UTC35m
2026-04-24 CSN8100 BKK → CAN Apr 24, 07:20 UTCApr 24, 07:55 UTC35m
2026-04-24 CSN8099 CAN → BKK Apr 24, 03:25 UTCApr 24, 05:45 UTC2h 20m
2026-04-23 CSN3407 CAN → KMG Apr 23, 09:50 UTCApr 23, 10:01 UTC10m
2026-04-23 CSN352 SIN → CAN Apr 23, 00:30 UTCApr 23, 01:45 UTC1h 15m
2026-04-22 CSN351 CAN → SIN Apr 22, 13:35 UTCApr 22, 15:10 UTC1h 35m
2026-04-21 CSN3040 SIN → CAN Apr 21, 13:25 UTCApr 21, 13:40 UTC15m
2026-04-21 CSN3040 SIN → CAN Apr 21, 10:25 UTCApr 21, 11:45 UTC1h 20m
2026-04-21 CSN3039 CAN → SIN Apr 21, 08:25 UTCApr 21, 08:50 UTC25m
2026-04-21 CSN3039 CAN → SIN Apr 21, 07:15 UTCApr 21, 07:30 UTC15m

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-1090 page for operator, model, and routing details .

Mode-S 7813B5 frequently asked

What is Mode-S code 7813B5?
7813B5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1090.
Where is Mode-S 7813B5 registered?
Mode-S code 7813B5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7813B5 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7813B5, octal 36011665, decimal 7,869,365.
What flights does 7813B5 operate?
Mode-S 7813B5 has broadcast 20 distinct callsigns, including CSN3040, CSN3039, CSN357, CSN364, CSN363.