Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7813B2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1286 · BOEING 737-800

Hex
7813B2
Octal
36011662
Decimal
7,869,362
Country
CN
Tail
B-1286
Type
B738
No current signal · last broadcast 3d ago
Flights observed
52
Distinct callsigns
18
Country
CN
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 7813B2.

Country allocation

The ICAO 24-bit address 7813B2 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 18 distinct

Callsign Airline Flights Last seen
CSN604 - 6 2026-06-29
CSN603 - 6 2026-06-29
CSN8144 China Southern Airlines 5 2026-07-26
CSN8200 - 4 2026-07-13
CSN8199 China Southern Airlines 4 2026-07-26
CSN6894 China Southern Airlines 4 2026-06-10
CSN6893 China Southern Airlines 4 2026-06-09
CSN8143 China Southern Airlines 3 2026-07-18
CSN3022 - 3 2026-06-23
CSN3021 - 3 2026-06-22
CSN6912 - 2 2026-07-01
CSN6908 China Southern Airlines 2 2026-06-07
CSN8189 - 1 2026-06-19
CSN6911 China Southern Airlines 1 2026-05-26
CSN6907 China Southern Airlines 1 2026-06-06
CSN6906 - 1 2026-07-10
CSN6905 - 1 2026-07-10
CSN6890 China Southern Airlines 1 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN8199 PKX → URC Jul 26, 06:35 UTCJul 26, 06:55 UTC20m
2026-07-26 CSN8144 TBS → URC Jul 26, 04:00 UTCJul 26, 04:15 UTC15m
2026-07-24 CSN6890 SZX → URC Jul 24, 10:00 UTCJul 24, 10:10 UTC10m
2026-07-18 CSN8144 TBS → URC Jul 18, 19:15 UTCJul 18, 19:40 UTC25m
2026-07-18 CSN8143 PKX → URC Jul 18, 13:10 UTCJul 18, 17:45 UTC4h 35m
2026-07-13 CSN8143 - Jul 13, 06:20 UTCJul 13, 06:35 UTC15m
2026-07-13 CSN8200 - Jul 13, 03:55 UTCJul 13, 04:10 UTC15m
2026-07-12 CSN8199 - Jul 12, 06:20 UTCJul 12, 06:35 UTC15m
2026-07-12 CSN8144 - Jul 12, 03:45 UTCJul 12, 04:01 UTC15m
2026-07-10 CSN6906 - Jul 10, 17:35 UTCJul 10, 17:55 UTC20m
2026-07-10 CSN6905 - Jul 10, 15:30 UTCJul 10, 15:40 UTC10m
2026-07-09 CSN8144 - Jul 9, 18:55 UTCJul 9, 19:25 UTC30m
2026-07-09 CSN8143 - Jul 9, 16:25 UTCJul 9, 17:05 UTC40m
2026-07-01 CSN6912 - Jul 1, 06:20 UTCJul 1, 06:30 UTC10m
2026-07-01 CSN8200 - Jul 1, 04:05 UTCJul 1, 04:20 UTC15m
2026-06-30 CSN8199 - Jun 30, 06:25 UTCJun 30, 06:45 UTC20m
2026-06-30 CSN8144 TBS → URC Jun 30, 04:00 UTCJun 30, 04:15 UTC15m
2026-06-29 CSN604 - Jun 29, 08:54 UTCJun 29, 09:14 UTC20m
2026-06-29 CSN603 - Jun 29, 06:54 UTCJun 29, 07:34 UTC40m
2026-06-25 CSN604 - Jun 25, 09:40 UTCJun 25, 09:55 UTC15m
2026-06-25 CSN603 ZGN → HKG Jun 25, 07:45 UTCJun 25, 08:20 UTC35m
2026-06-23 CSN3022 - Jun 23, 00:24 UTCJun 23, 00:39 UTC15m
2026-06-22 CSN3021 - Jun 22, 21:35 UTCJun 22, 22:10 UTC35m
2026-06-22 CSN604 - Jun 22, 08:54 UTCJun 22, 09:10 UTC15m
2026-06-22 CSN603 - Jun 22, 06:45 UTCJun 22, 07:14 UTC30m
2026-06-19 CSN8189 - Jun 19, 16:49 UTCJun 19, 21:39 UTC4h 50m
2026-06-15 CSN3022 HKG → URC Jun 15, 00:49 UTCJun 15, 01:10 UTC20m
2026-06-14 CSN3021 URC → HKG Jun 14, 21:25 UTCJun 14, 21:55 UTC30m
2026-06-13 CSN3022 HKG → URC Jun 13, 00:40 UTCJun 13, 00:50 UTC10m
2026-06-12 CSN3021 URC → HKG Jun 12, 22:00 UTCJun 12, 22:10 UTC10m
2026-06-10 CSN6894 TSN → URC Jun 10, 00:35 UTCJun 10, 00:50 UTC15m
2026-06-09 CSN6893 URC → TSN Jun 9, 13:10 UTCJun 9, 13:35 UTC25m
2026-06-07 CSN6908 PKX → URC Jun 7, 04:30 UTCJun 7, 04:50 UTC20m
2026-06-06 CSN6907 URC → PKX Jun 6, 12:24 UTCJun 6, 12:40 UTC15m
2026-06-05 CSN6894 TSN → URC Jun 5, 00:35 UTCJun 5, 00:50 UTC15m
2026-06-04 CSN6893 URC → TSN Jun 4, 13:15 UTCJun 4, 13:35 UTC20m
2026-06-03 CSN6908 PKX → URC Jun 3, 04:25 UTCJun 3, 04:40 UTC15m
2026-06-01 CSN604 HKG → URC Jun 1, 09:05 UTCJun 1, 09:20 UTC15m
2026-06-01 CSN603 URC → HKG Jun 1, 06:30 UTCJun 1, 07:10 UTC40m
2026-05-27 CSN6912 PKX → URC May 27, 08:10 UTCMay 27, 08:25 UTC15m
2026-05-27 CSN8200 URC → PKX May 27, 05:24 UTCMay 27, 05:40 UTC15m
2026-05-26 CSN8200 URC → PKX May 26, 06:34 UTCMay 27, 05:40 UTC23h 5m
2026-05-26 CSN8199 PKX → URC May 26, 06:25 UTCMay 26, 06:39 UTC15m
2026-05-26 CSN6911 URC → PKX May 26, 04:04 UTCMay 26, 04:15 UTC10m
2026-05-24 CSN604 HKG → URC May 24, 09:05 UTCMay 24, 09:20 UTC15m
2026-05-24 CSN603 URC → HKG May 24, 06:55 UTCMay 24, 07:30 UTC35m
2026-05-21 CSN6894 TSN → URC May 21, 00:35 UTCMay 21, 00:50 UTC15m
2026-05-20 CSN6893 URC → TSN May 20, 13:10 UTCMay 20, 13:35 UTC25m
2026-04-29 CSN6894 TSN → URC Apr 29, 01:05 UTCApr 29, 01:15 UTC10m
2026-04-28 CSN6893 URC → TSN Apr 28, 13:30 UTCApr 28, 13:40 UTC10m

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-1286 page for operator, model, and routing details .

Mode-S 7813B2 frequently asked

What is Mode-S code 7813B2?
7813B2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1286.
Where is Mode-S 7813B2 registered?
Mode-S code 7813B2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7813B2 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 7813B2, octal 36011662, decimal 7,869,362.
What flights does 7813B2 operate?
Mode-S 7813B2 has broadcast 18 distinct callsigns, including CSN604, CSN603, CSN8144, CSN8200, CSN8199.