Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7813FA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1123 · BOEING 737-800

Hex
7813FA
Octal
36011772
Decimal
7,869,434
Country
CN
Tail
B-1123
Type
B738
No current signal · last broadcast 1d ago
Flights observed
185
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7813FA.

Country allocation

The ICAO 24-bit address 7813FA 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
CSN3689 - 12 2026-07-02
CSN3719 China Southern Airlines 10 2026-07-26
CSN3791 - 8 2026-07-14
CSN3735 China Southern Airlines 7 2026-07-25
CSN3690 - 7 2026-07-02
CSN8285 - 6 2026-07-15
CSN3881 China Southern Airlines 6 2026-05-26
CSN3736 - 6 2026-06-26
CSN3761 China Southern Airlines 5 2026-07-25
CSN3755 - 5 2026-07-09
CSN3729 China Southern Airlines 5 2026-07-21
CSN8474 China Southern Airlines 4 2026-07-20
CSN8473 - 4 2026-07-20
CSN3771 - 4 2026-06-12
CSN3756 - 4 2026-07-09
CSN3747 - 4 2026-06-28
CSN3733 China Southern Airlines 4 2026-07-22
CSN3645 China Southern Airlines 4 2026-07-24
CSN3466 - 4 2026-07-20
CSN3465 China Southern Airlines 4 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN3719 CAN → LZH Jul 26, 09:50 UTCJul 26, 10:00 UTC10m
2026-07-25 CSN3735 ZUH → PKX Jul 25, 08:15 UTCJul 25, 08:30 UTC15m
2026-07-25 CSN3761 ZUH → XIY Jul 25, 00:15 UTCJul 25, 00:25 UTC10m
2026-07-24 CSN3646 ZUH → CGQ Jul 24, 15:45 UTCJul 24, 16:05 UTC20m
2026-07-24 CSN3645 CGQ → ZUH Jul 24, 10:00 UTCJul 24, 10:10 UTC10m
2026-07-24 CSN3731 ZUH → PEK Jul 24, 00:45 UTCJul 24, 00:55 UTC10m
2026-07-23 CSN3719 CAN → LZH Jul 23, 08:30 UTCJul 23, 08:40 UTC10m
2026-07-23 CSN8418 NKG → ZUH Jul 23, 05:35 UTCJul 23, 06:00 UTC25m
2026-07-23 CSN8417 ZUH → NKG Jul 23, 00:40 UTCJul 23, 00:50 UTC10m
2026-07-22 CSN3734 - Jul 22, 11:20 UTCJul 22, 11:35 UTC15m
2026-07-22 CSN3733 ZUH → PEK Jul 22, 02:30 UTCJul 22, 02:45 UTC15m
2026-07-22 CSN5734 CQW → CAN Jul 22, 00:40 UTCJul 22, 00:55 UTC15m
2026-07-21 CSN5733 CAN → CQW Jul 21, 15:00 UTCJul 21, 15:10 UTC10m
2026-07-21 CSN3729 CAN → LZH Jul 21, 08:20 UTCJul 21, 08:35 UTC15m
2026-07-21 CSN3465 SZX → CKG Jul 21, 00:40 UTCJul 21, 00:50 UTC10m
2026-07-20 CSN8474 SGN → SZX Jul 20, 21:50 UTCJul 20, 22:05 UTC15m
2026-07-20 CSN8473 - Jul 20, 14:55 UTCJul 20, 15:05 UTC10m
2026-07-20 CSN3828 - Jul 20, 12:45 UTCJul 20, 13:10 UTC25m
2026-07-20 CSN3827 - Jul 20, 07:30 UTCJul 20, 07:40 UTC10m
2026-07-20 CSN3466 - Jul 20, 05:10 UTCJul 20, 05:20 UTC10m
2026-07-19 CSN3645 - Jul 19, 09:40 UTCJul 19, 09:50 UTC10m
2026-07-19 CSN3731 ZUH → PEK Jul 19, 00:50 UTCJul 19, 01:05 UTC15m
2026-07-18 - - Jul 18, 15:50 UTCJul 18, 16:00 UTC10m
2026-07-18 CSN8701 - Jul 18, 11:25 UTCJul 18, 11:40 UTC15m
2026-07-18 CSN3733 - Jul 18, 02:19 UTCJul 18, 02:35 UTC15m
2026-07-17 CSN5733 CAN → CQW Jul 17, 13:50 UTCJul 17, 14:00 UTC10m
2026-07-17 CSN3729 - Jul 17, 06:54 UTCJul 17, 07:05 UTC10m
2026-07-17 CSN3465 - Jul 17, 00:35 UTCJul 17, 00:50 UTC15m
2026-07-16 CSN3956 - Jul 16, 17:20 UTCJul 16, 17:30 UTC10m
2026-07-16 CSN3955 - Jul 16, 14:40 UTCJul 16, 14:50 UTC10m
2026-07-16 CSN5844 - Jul 16, 10:45 UTCJul 16, 11:40 UTC55m
2026-07-16 CSN5843 - Jul 16, 04:20 UTCJul 16, 04:30 UTC10m
2026-07-15 CSN8474 - Jul 15, 21:35 UTCJul 15, 21:50 UTC15m
2026-07-15 CSN8473 - Jul 15, 16:15 UTCJul 15, 16:25 UTC10m
2026-07-15 CSN3828 - Jul 15, 13:30 UTCJul 15, 14:00 UTC30m
2026-07-15 CSN3827 - Jul 15, 08:25 UTCJul 15, 08:35 UTC10m
2026-07-15 CSN3466 - Jul 15, 06:45 UTCJul 15, 06:55 UTC10m
2026-07-15 CSN8285 - Jul 15, 00:35 UTCJul 15, 00:45 UTC10m
2026-07-14 CSN3792 - Jul 14, 08:05 UTCJul 14, 08:20 UTC15m
2026-07-14 CSN3791 - Jul 14, 02:10 UTCJul 14, 02:20 UTC10m
2026-07-13 CSN8701 - Jul 13, 11:10 UTCJul 13, 11:20 UTC10m
2026-07-13 CSN3733 - Jul 13, 02:30 UTCJul 13, 02:40 UTC10m
2026-07-13 CSN5734 - Jul 13, 00:25 UTCJul 13, 00:40 UTC15m
2026-07-12 CSN5733 - Jul 12, 13:35 UTCJul 12, 13:50 UTC15m
2026-07-12 CSN3729 - Jul 12, 06:55 UTCJul 12, 07:10 UTC15m
2026-07-12 CSN3465 - Jul 12, 00:30 UTCJul 12, 00:40 UTC10m
2026-07-11 CSN5844 - Jul 11, 10:05 UTCJul 11, 11:10 UTC1h 5m
2026-07-11 CSN5843 - Jul 11, 04:20 UTCJul 11, 04:30 UTC10m
2026-07-10 CSN8474 - Jul 10, 21:35 UTCJul 10, 21:50 UTC15m
2026-07-10 CSN8473 - Jul 10, 15:15 UTCJul 10, 15:25 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-1123 page for operator, model, and routing details .

Mode-S 7813FA frequently asked

What is Mode-S code 7813FA?
7813FA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1123.
Where is Mode-S 7813FA registered?
Mode-S code 7813FA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7813FA broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7813FA, octal 36011772, decimal 7,869,434.
What flights does 7813FA operate?
Mode-S 7813FA has broadcast 20 distinct callsigns, including CSN3689, CSN3719, CSN3791, CSN3735, CSN3690.