Apparatus

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sensors Mode-S transponder

7818F3

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30E2 · AIRBUS A-321neo

Hex
7818F3
Octal
36014363
Decimal
7,870,707
Country
CN
Tail
B-30E2
Type
A21N
No current signal · last broadcast 2h ago
Flights observed
142
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7818F3.

Country allocation

The ICAO 24-bit address 7818F3 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
CSN8354 China Southern Airlines 16 2026-05-29
CSN8353 China Southern Airlines 12 2026-05-29
CSN8118 China Southern Airlines 10 2026-05-29
CSN8117 China Southern Airlines 9 2026-05-29
CSN5031 China Southern Airlines 9 2026-05-22
CSN5032 China Southern Airlines 6 2026-05-22
CSN6592 China Southern Airlines 5 2026-05-25
CSN6591 China Southern Airlines 3 2026-05-25
CSN8048 China Southern Airlines 2 2026-05-16
CSN6386 China Southern Airlines 2 2026-04-23
CSN5853 China Southern Airlines 2 2026-05-01
CSN5795 China Southern Airlines 2 2026-05-30
CSN5458 China Southern Airlines 2 2026-04-24
CSN5457 China Southern Airlines 2 2026-05-25
CSN5102 China Southern Airlines 2 2026-05-09
CSN5080 China Southern Airlines 2 2026-05-21
CSN3649 China Southern Airlines 2 2026-05-15
CSN3633 China Southern Airlines 2 2026-04-26
CSN3613 China Southern Airlines 2 2026-05-04
CSN3576 China Southern Airlines 2 2026-04-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN5795 SZX → URC May 30, 01:35 UTCMay 30, 01:50 UTC15m
2026-05-29 CSN8354 CGK → SZX May 29, 21:40 UTCMay 29, 21:55 UTC15m
2026-05-29 CSN8354 CGK → SZX May 29, 17:15 UTCMay 29, 18:45 UTC1h 30m
2026-05-29 CSN8353 SZX → CGK May 29, 15:25 UTCMay 29, 15:30 UTC5m
2026-05-29 CSN8353 SZX → CGK May 29, 11:10 UTCMay 29, 11:20 UTC10m
2026-05-29 CSN8118 SIN → SZX May 29, 08:55 UTCMay 29, 09:15 UTC20m
2026-05-29 CSN8118 SIN → SZX May 29, 05:40 UTCMay 29, 06:05 UTC25m
2026-05-29 CSN8117 SZX → SIN May 29, 03:15 UTCMay 29, 03:35 UTC20m
2026-05-29 CSN8117 SZX → SIN May 29, 00:15 UTCMay 29, 00:25 UTC10m
2026-05-28 CSN8609 SZX → URC May 28, 03:55 UTCMay 28, 04:05 UTC10m
2026-05-28 CSN6444 HAK → SZX May 28, 02:30 UTCMay 28, 02:40 UTC10m
2026-05-27 CSN6443 SZX → HAK May 27, 23:10 UTCMay 27, 23:30 UTC20m
2026-05-27 CSN3172 PKX → SZX May 27, 10:35 UTCMay 27, 10:50 UTC15m
2026-05-27 CSN3169 SZX → PKX May 27, 03:50 UTCMay 27, 04:04 UTC15m
2026-05-26 CSN3365 SZX → HGH May 26, 13:10 UTCMay 26, 13:19 UTC10m
2026-05-26 CSN5844 TAO → SZX May 26, 09:59 UTCMay 26, 11:09 UTC1h 10m
2026-05-26 CSN5843 SZX → TAO May 26, 04:10 UTCMay 26, 04:24 UTC15m
2026-05-25 CSN5457 SZX → WUH May 25, 10:20 UTCMay 25, 10:35 UTC15m
2026-05-25 CSN6592 NGB → SZX May 25, 06:45 UTCMay 25, 07:10 UTC25m
2026-05-25 CSN6591 SZX → NGB May 25, 02:00 UTCMay 25, 02:15 UTC15m
2026-05-24 CSN8354 CGK → SZX May 24, 17:25 UTCMay 24, 18:50 UTC1h 25m
2026-05-24 CSN8353 SZX → CGK May 24, 11:30 UTCMay 24, 11:40 UTC10m
2026-05-24 CSN8118 SIN → SZX May 24, 05:40 UTCMay 24, 06:00 UTC20m
2026-05-24 CSN8117 SZX → SIN May 24, 00:15 UTCMay 24, 00:25 UTC10m
2026-05-23 CSN5387 SZX → NAO May 23, 10:40 UTCMay 23, 11:00 UTC20m
2026-05-23 CSN3460 KMG → SZX May 23, 08:15 UTCMay 23, 08:35 UTC20m
2026-05-22 CSN5032 KUL → SZX May 22, 11:05 UTCMay 22, 11:15 UTC10m
2026-05-22 CSN5032 KUL → SZX May 22, 07:40 UTCMay 22, 07:55 UTC15m
2026-05-22 CSN5031 SZX → KUL May 22, 05:50 UTCMay 22, 06:20 UTC30m
2026-05-22 CSN5031 SZX → KUL May 22, 02:55 UTCMay 22, 03:05 UTC10m
2026-05-21 CSN5080 KUL → SZX May 21, 23:00 UTCMay 21, 23:15 UTC15m
2026-05-21 CSN5080 KUL → SZX May 21, 19:45 UTCMay 21, 20:00 UTC15m
2026-05-21 CSN5079 SZX → KUL May 21, 17:35 UTCMay 21, 18:05 UTC30m
2026-05-21 CSN5032 KUL → SZX May 21, 09:30 UTCMay 21, 09:45 UTC15m
2026-05-21 CSN5031 SZX → KUL May 21, 07:40 UTCMay 21, 08:15 UTC35m
2026-05-21 CSN5031 SZX → KUL May 21, 04:50 UTCMay 21, 05:00 UTC10m
2026-05-20 CSN3911 SZX → WUH May 20, 00:45 UTCMay 20, 00:55 UTC10m
2026-05-19 CSN5795 SZX → URC May 19, 01:20 UTCMay 19, 01:35 UTC15m
2026-05-18 CSN6592 NGB → SZX May 18, 06:05 UTCMay 18, 06:20 UTC15m
2026-05-18 CSN6591 SZX → NGB May 18, 01:15 UTCMay 18, 01:25 UTC10m
2026-05-17 CSN8354 CGK → SZX May 17, 22:01 UTCMay 17, 22:15 UTC15m
2026-05-17 CSN8354 CGK → SZX May 17, 17:45 UTCMay 17, 19:10 UTC1h 25m
2026-05-17 CSN8353 SZX → CGK May 17, 11:30 UTCMay 17, 11:40 UTC10m
2026-05-17 CSN8118 SIN → SZX May 17, 05:55 UTCMay 17, 06:25 UTC30m
2026-05-17 CSN8117 SZX → SIN May 17, 00:10 UTCMay 17, 00:20 UTC10m
2026-05-16 CSN8048 SIN → SZX May 16, 17:01 UTCMay 16, 17:15 UTC15m
2026-05-16 CSN8048 SIN → SZX May 16, 13:35 UTCMay 16, 14:01 UTC25m
2026-05-16 CSN8047 SZX → SIN May 16, 08:05 UTCMay 16, 08:16 UTC10m
2026-05-15 CSN3649 CAN → FOC May 15, 23:20 UTCMay 15, 23:35 UTC15m
2026-05-15 CSN3174 PKX → SZX May 15, 17:05 UTCMay 15, 17:35 UTC30m

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-30E2 page for operator, model, and routing details .

Mode-S 7818F3 frequently asked

What is Mode-S code 7818F3?
7818F3 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30E2.
Where is Mode-S 7818F3 registered?
Mode-S code 7818F3 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7818F3 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7818F3, octal 36014363, decimal 7,870,707.
What flights does 7818F3 operate?
Mode-S 7818F3 has broadcast 20 distinct callsigns, including CSN8354, CSN8353, CSN8118, CSN8117, CSN5031.