Apparatus

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sensors Mode-S transponder

7818F6

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30E7 · AIRBUS A-321neo

Hex
7818F6
Octal
36014366
Decimal
7,870,710
Country
CN
Tail
B-30E7
Type
A21N
No current signal · last broadcast Jul 26, 12:40 UTC
Flights observed
396
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 12:40 UTC

Last known position

Most recent position reported by Mode-S 7818F6.

Country allocation

The ICAO 24-bit address 7818F6 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 13 2026-07-22
CSN8047 - 13 2026-07-17
CSN8353 - 12 2026-07-22
CSN8048 - 12 2026-07-17
CSN5031 - 12 2026-07-14
CSN6481 China Southern Airlines 10 2026-07-25
CSN5032 - 10 2026-07-14
CSN8118 - 9 2026-07-09
CSN8117 - 9 2026-07-09
CSN5844 - 7 2026-06-15
CSN5080 China Southern Airlines 7 2026-05-25
CSN5079 China Southern Airlines 7 2026-05-25
CSN6482 China Southern Airlines 6 2026-07-25
CSN3613 China Southern Airlines 6 2026-05-07
CSN3213 - 6 2026-06-22
CSN6385 - 5 2026-07-07
CSN5843 - 5 2026-06-15
CSN5387 - 5 2026-06-22
CSN3649 China Southern Airlines 5 2026-06-11
CSN3369 - 5 2026-06-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN3584 KHN → SZX Jul 26, 12:20 UTCJul 26, 12:40 UTC20m
2026-07-25 CSN6482 HRB → SZX Jul 25, 11:50 UTCJul 25, 12:00 UTC10m
2026-07-25 CSN6481 SZX → HRB Jul 25, 03:40 UTCJul 25, 08:50 UTC5h 10m
2026-07-25 CSN6481 SZX → HRB Jul 25, 01:50 UTCJul 25, 02:05 UTC15m
2026-07-24 CSN6498 SYX → SZX Jul 24, 17:35 UTCJul 24, 17:50 UTC15m
2026-07-24 CSN6497 SZX → SYX Jul 24, 14:00 UTCJul 24, 14:15 UTC15m
2026-07-24 CSN3561 SZX → SHA Jul 24, 07:20 UTCJul 24, 12:45 UTC5h 25m
2026-07-24 CSN3352 - Jul 24, 05:45 UTCJul 24, 05:55 UTC10m
2026-07-24 CSN3351 - Jul 24, 00:50 UTCJul 24, 01:00 UTC10m
2026-07-23 CSN3090 ICN → SZX Jul 23, 08:35 UTCJul 23, 09:00 UTC25m
2026-07-23 CSN3090 ICN → SZX Jul 23, 05:55 UTCJul 23, 06:40 UTC45m
2026-07-23 CSN3089 SZX → ICN Jul 23, 03:25 UTCJul 23, 04:10 UTC45m
2026-07-23 CSN3089 SZX → ICN Jul 23, 01:05 UTCJul 23, 01:15 UTC10m
2026-07-22 CSN8354 CGK → SZX Jul 22, 21:45 UTCJul 22, 22:00 UTC15m
2026-07-22 CSN8354 CGK → SZX Jul 22, 17:20 UTCJul 22, 18:40 UTC1h 20m
2026-07-22 CSN8353 - Jul 22, 15:30 UTCJul 22, 15:45 UTC15m
2026-07-22 CSN8353 - Jul 22, 11:20 UTCJul 22, 11:35 UTC15m
2026-07-22 CSN3089 SZX → ICN Jul 22, 03:15 UTCJul 22, 04:00 UTC45m
2026-07-22 CSN3089 SZX → ICN Jul 22, 00:55 UTCJul 22, 01:05 UTC10m
2026-07-21 CSN6923 SZX → KMG Jul 21, 11:00 UTCJul 21, 11:50 UTC50m
2026-07-21 CSN8758 - Jul 21, 07:50 UTCJul 21, 09:10 UTC1h 20m
2026-07-21 CSN8757 - Jul 21, 01:25 UTCJul 21, 01:35 UTC10m
2026-07-20 CSN3912 WUH → SZX Jul 20, 16:10 UTCJul 20, 16:20 UTC10m
2026-07-20 CSN3911 - Jul 20, 00:35 UTCJul 20, 00:55 UTC20m
2026-07-19 CSN5841 - Jul 19, 07:20 UTCJul 19, 07:35 UTC15m
2026-07-19 CSN3559 - Jul 19, 00:30 UTCJul 19, 00:40 UTC10m
2026-07-18 CSN3210 - Jul 18, 14:20 UTCJul 18, 15:15 UTC55m
2026-07-18 CSN3209 - Jul 18, 08:45 UTCJul 18, 08:55 UTC10m
2026-07-18 CSN3176 - Jul 18, 06:30 UTCJul 18, 07:00 UTC30m
2026-07-17 CSN3171 - Jul 17, 23:50 UTCJul 18, 00:00 UTC10m
2026-07-17 CSN8048 - Jul 17, 13:50 UTCJul 17, 14:20 UTC30m
2026-07-17 CSN8047 - Jul 17, 11:39 UTCJul 17, 12:04 UTC25m
2026-07-17 CSN8047 - Jul 17, 08:49 UTCJul 17, 08:59 UTC10m
2026-07-17 CSN3566 - Jul 17, 06:40 UTCJul 17, 07:00 UTC20m
2026-07-17 CSN3565 - Jul 17, 02:05 UTCJul 17, 02:15 UTC10m
2026-07-16 CSN3167 - Jul 16, 06:55 UTCJul 16, 07:10 UTC15m
2026-07-15 CSN5861 - Jul 15, 23:30 UTCJul 15, 23:40 UTC10m
2026-07-15 CSN6482 - Jul 15, 12:55 UTCJul 15, 13:25 UTC30m
2026-07-15 CSN6481 - Jul 15, 04:15 UTCJul 15, 10:50 UTC6h 35m
2026-07-14 CSN6549 - Jul 14, 14:15 UTCJul 14, 14:25 UTC10m
2026-07-14 CSN5032 - Jul 14, 11:45 UTCJul 14, 12:05 UTC20m
2026-07-14 CSN5032 - Jul 14, 08:25 UTCJul 14, 08:40 UTC15m
2026-07-14 CSN5031 - Jul 14, 06:30 UTCJul 14, 07:05 UTC35m
2026-07-14 CSN5031 - Jul 14, 03:15 UTCJul 14, 03:25 UTC10m
2026-07-14 CSN8588 - Jul 14, 00:45 UTCJul 14, 01:10 UTC25m
2026-07-13 CSN8587 - Jul 13, 13:35 UTCJul 13, 13:45 UTC10m
2026-07-13 CSN5032 - Jul 13, 07:55 UTCJul 13, 08:10 UTC15m
2026-07-13 CSN5031 - Jul 13, 05:25 UTCJul 13, 06:01 UTC35m
2026-07-13 CSN5031 - Jul 13, 02:35 UTCJul 13, 02:45 UTC10m
2026-07-12 CSN8048 - Jul 12, 17:01 UTCJul 12, 17:15 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-30E7 page for operator, model, and routing details .

Mode-S 7818F6 frequently asked

What is Mode-S code 7818F6?
7818F6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30E7.
Where is Mode-S 7818F6 registered?
Mode-S code 7818F6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7818F6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7818F6, octal 36014366, decimal 7,870,710.
What flights does 7818F6 operate?
Mode-S 7818F6 has broadcast 20 distinct callsigns, including CSN8354, CSN8047, CSN8353, CSN8048, CSN5031.