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 Jul 26, 12:15 UTC
Flights observed
164
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 12:15 UTC

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 - 16 2026-07-08
CSN357 China Southern Airlines 15 2026-07-22
CSN358 China Southern Airlines 11 2026-07-20
CSN352 - 11 2026-07-15
CSN3039 - 11 2026-07-08
CSN363 China Southern Airlines 8 2026-07-19
CSN364 China Southern Airlines 7 2026-07-19
CSN351 - 7 2026-07-14
CSN340 China Southern Airlines 7 2026-07-23
CSN8100 - 6 2026-06-28
CSN8099 - 6 2026-06-28
CSN339 China Southern Airlines 6 2026-07-22
CSN3061 China Southern Airlines 6 2026-07-21
CSN3062 China Southern Airlines 5 2026-07-21
CSN8484 China Southern Airlines 4 2026-07-23
CSN5015 China Southern Airlines 4 2026-07-24
CSN3407 - 4 2026-07-11
CSN8483 China Southern Airlines 3 2026-07-23
CSN5016 China Southern Airlines 3 2026-07-24
CSN362 - 3 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6377 CGQ → CAN Jul 26, 12:00 UTCJul 26, 12:15 UTC15m
2026-07-25 CSN6377 CGQ → CAN Jul 25, 15:25 UTCJul 26, 12:15 UTC20h 51m
2026-07-25 CSN6341 CGQ → CAN Jul 25, 03:35 UTCJul 25, 03:45 UTC10m
2026-07-24 CSN5016 DAC → CAN Jul 24, 07:40 UTCJul 25, 01:45 UTC18h 5m
2026-07-24 CSN5015 CAN → DAC Jul 24, 03:05 UTCJul 24, 06:25 UTC3h 20m
2026-07-23 CSN8484 BKI → CAN Jul 23, 19:40 UTCJul 23, 20:10 UTC30m
2026-07-23 CSN8484 BKI → CAN Jul 23, 17:35 UTCJul 23, 18:00 UTC25m
2026-07-23 CSN8483 CAN → BKI Jul 23, 16:05 UTCJul 23, 16:25 UTC20m
2026-07-23 CSN8483 CAN → BKI Jul 23, 14:00 UTCJul 23, 14:30 UTC30m
2026-07-23 CSN340 ICN → CAN Jul 23, 00:55 UTCJul 23, 01:40 UTC45m
2026-07-22 CSN339 CAN → ICN Jul 22, 12:50 UTCJul 22, 13:30 UTC40m
2026-07-22 CSN357 CAN → BKK Jul 22, 01:05 UTCJul 22, 03:15 UTC2h 10m
2026-07-21 CSN3062 ICN → CAN Jul 21, 11:00 UTCJul 21, 11:45 UTC45m
2026-07-21 CSN3061 CAN → ICN Jul 21, 08:30 UTCJul 21, 09:15 UTC45m
2026-07-21 CSN340 ICN → CAN Jul 21, 04:30 UTCJul 21, 04:40 UTC10m
2026-07-21 CSN340 ICN → CAN Jul 21, 01:15 UTCJul 21, 02:00 UTC45m
2026-07-20 CSN339 CAN → ICN Jul 20, 11:55 UTCJul 20, 12:35 UTC40m
2026-07-20 CSN358 BKK → CAN Jul 20, 04:50 UTCJul 20, 05:05 UTC15m
2026-07-20 CSN357 CAN → BKK Jul 20, 02:50 UTCJul 20, 03:05 UTC15m
2026-07-20 CSN357 CAN → BKK Jul 20, 00:50 UTCJul 20, 01:10 UTC20m
2026-07-19 CSN364 BKK → CAN Jul 19, 12:00 UTCJul 19, 12:20 UTC20m
2026-07-19 CSN363 CAN → BKK Jul 19, 10:10 UTCJul 19, 10:20 UTC10m
2026-07-19 CSN363 CAN → BKK Jul 19, 08:10 UTCJul 19, 08:25 UTC15m
2026-07-17 CSN6339 - Jul 17, 11:20 UTCJul 17, 11:35 UTC15m
2026-07-16 CSN6507 - Jul 16, 08:15 UTCJul 16, 11:25 UTC3h 10m
2026-07-16 CSN362 - Jul 16, 01:30 UTCJul 16, 01:45 UTC15m
2026-07-15 CSN361 - Jul 15, 14:30 UTCJul 15, 14:50 UTC20m
2026-07-15 CSN352 - Jul 15, 03:20 UTCJul 15, 03:40 UTC20m
2026-07-15 CSN352 - Jul 15, 00:15 UTCJul 15, 00:40 UTC25m
2026-07-14 CSN351 - Jul 14, 15:10 UTCJul 14, 15:40 UTC30m
2026-07-14 CSN351 - Jul 14, 12:25 UTCJul 14, 12:35 UTC10m
2026-07-14 CSN8988 - Jul 14, 02:10 UTCJul 14, 07:10 UTC5h 0m
2026-07-12 CSN358 - Jul 12, 04:30 UTCJul 12, 04:40 UTC10m
2026-07-12 CSN357 - Jul 12, 02:50 UTCJul 12, 03:01 UTC10m
2026-07-11 CSN8484 - Jul 11, 19:30 UTCJul 11, 19:50 UTC20m
2026-07-11 CSN8484 - Jul 11, 17:25 UTCJul 11, 17:55 UTC30m
2026-07-11 CSN8483 - Jul 11, 15:45 UTCJul 11, 16:05 UTC20m
2026-07-11 CSN3407 - Jul 11, 06:10 UTCJul 11, 06:45 UTC35m
2026-07-11 CSN340 - Jul 11, 00:55 UTCJul 11, 01:40 UTC45m
2026-07-10 CSN339 - Jul 10, 05:00 UTCJul 10, 12:30 UTC7h 30m
2026-07-10 CSN357 ZGN → BKK Jul 10, 01:25 UTCJul 10, 03:35 UTC2h 10m
2026-07-09 CSN364 - Jul 9, 14:10 UTCJul 9, 14:35 UTC25m
2026-07-09 CSN363 - Jul 9, 12:05 UTCJul 9, 12:35 UTC30m
2026-07-09 CSN358 - Jul 9, 04:50 UTCJul 9, 05:20 UTC30m
2026-07-09 CSN357 - Jul 9, 00:55 UTCJul 9, 03:10 UTC2h 15m
2026-07-08 CSN3040 - Jul 8, 14:45 UTCJul 8, 15:00 UTC15m
2026-07-08 CSN3040 - Jul 8, 11:35 UTCJul 8, 12:05 UTC30m
2026-07-08 CSN3039 - Jul 8, 09:35 UTCJul 8, 10:10 UTC35m
2026-07-08 CSN3039 - Jul 8, 06:40 UTCJul 8, 06:50 UTC10m
2026-07-07 CSN3062 - Jul 7, 07:50 UTCJul 7, 08:40 UTC50m

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 Jul 26, 12:15 UTC.
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, CSN357, CSN358, CSN352, CSN3039.