Apparatus

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sensors Mode-S transponder

7818F5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30E6 · AIRBUS A-321neo

Hex
7818F5
Octal
36014365
Decimal
7,870,709
Country
CN
Tail
B-30E6
Type
A21N
No current signal · last broadcast Jul 26, 13:35 UTC
Flights observed
353
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:35 UTC

Last known position

Most recent position reported by Mode-S 7818F5.

Country allocation

The ICAO 24-bit address 7818F5 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
CSN5032 - 14 2026-07-16
CSN5031 - 13 2026-07-16
CSN8354 - 9 2026-07-11
CSN8117 China Southern Airlines 8 2026-04-26
CSN8118 China Southern Airlines 7 2026-05-25
CSN8047 - 7 2026-07-10
CSN3369 - 7 2026-07-14
CSN8353 - 6 2026-07-11
CSN8048 - 6 2026-07-10
CSN6481 - 6 2026-06-23
CSN3589 China Southern Airlines 6 2026-07-26
CSN3167 - 6 2026-06-27
CSN6386 - 5 2026-07-21
CSN3965 - 5 2026-06-21
CSN3797 China Southern Airlines 5 2026-07-22
CSN3176 China Southern Airlines 5 2026-07-23
CSN3171 - 5 2026-07-22
CSN3154 - 5 2026-06-27
CSN8097 - 4 2026-07-09
CSN6551 - 4 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN3589 SZX → SHA Jul 26, 13:00 UTCJul 26, 13:35 UTC35m
2026-07-26 CSN3589 SZX → SHA Jul 26, 12:15 UTCJul 26, 12:25 UTC10m
2026-07-26 CSN321Z - Jul 26, 10:10 UTCJul 26, 10:35 UTC25m
2026-07-25 CSN8712 HGH → SZX Jul 25, 07:50 UTCJul 25, 08:10 UTC20m
2026-07-25 CSN8711 SZX → HGH Jul 25, 02:35 UTCJul 25, 02:45 UTC10m
2026-07-24 CSN3964 TAO → SZX Jul 24, 16:00 UTCJul 24, 17:20 UTC1h 20m
2026-07-24 CSN3963 SZX → TAO Jul 24, 10:35 UTCJul 24, 10:45 UTC10m
2026-07-24 CSN3459 SZX → KMG Jul 24, 02:05 UTCJul 24, 02:20 UTC15m
2026-07-23 CSN8576 HFE → SZX Jul 23, 13:35 UTCJul 23, 13:45 UTC10m
2026-07-23 CSN3176 PKX → SZX Jul 23, 06:45 UTCJul 23, 07:00 UTC15m
2026-07-22 CSN3171 - Jul 22, 23:45 UTCJul 22, 23:55 UTC10m
2026-07-22 CSN8576 HFE → SZX Jul 22, 15:25 UTCJul 22, 15:50 UTC25m
2026-07-22 CSN3797 SZX → HGH Jul 22, 03:40 UTCJul 22, 03:50 UTC10m
2026-07-22 CSN3590 SHA → SZX Jul 22, 01:35 UTCJul 22, 02:15 UTC40m
2026-07-21 CSN3589 SZX → SHA Jul 21, 14:05 UTCJul 21, 14:20 UTC15m
2026-07-21 CSN6386 - Jul 21, 04:00 UTCJul 21, 08:40 UTC4h 40m
2026-07-21 CSN6385 SZX → SHE Jul 21, 01:45 UTCJul 21, 02:00 UTC15m
2026-07-20 CSN3964 - Jul 20, 17:40 UTCJul 20, 18:20 UTC40m
2026-07-20 CSN3963 SZX → TAO Jul 20, 11:45 UTCJul 20, 12:05 UTC20m
2026-07-20 CSN3176 PKX → SZX Jul 20, 07:35 UTCJul 20, 07:50 UTC15m
2026-07-20 CSN3171 - Jul 20, 02:00 UTCJul 20, 02:15 UTC15m
2026-07-19 CSN5388 - Jul 19, 14:05 UTCJul 19, 14:15 UTC10m
2026-07-19 CSN5387 - Jul 19, 08:20 UTCJul 19, 08:30 UTC10m
2026-07-19 CSN5102 - Jul 19, 05:45 UTCJul 19, 05:55 UTC10m
2026-07-19 CSN5101 - Jul 19, 01:25 UTCJul 19, 05:15 UTC3h 50m
2026-07-18 CSN5388 - Jul 18, 14:50 UTCJul 18, 15:00 UTC10m
2026-07-18 CSN5387 - Jul 18, 09:10 UTCJul 18, 09:20 UTC10m
2026-07-18 CSN8797 - Jul 18, 00:39 UTCJul 18, 00:50 UTC10m
2026-07-17 CSN3670 - Jul 17, 16:40 UTCJul 17, 16:55 UTC15m
2026-07-17 CSN3669 - Jul 17, 11:00 UTCJul 17, 11:10 UTC10m
2026-07-17 CSN3090 - Jul 17, 09:10 UTCJul 17, 09:20 UTC10m
2026-07-17 CSN3090 - Jul 17, 06:20 UTCJul 17, 06:50 UTC30m
2026-07-17 CSN3089 - Jul 17, 03:20 UTCJul 17, 03:59 UTC40m
2026-07-17 CSN3089 - Jul 17, 00:55 UTCJul 17, 01:05 UTC10m
2026-07-16 CSN5032 - Jul 16, 13:34 UTCJul 16, 14:00 UTC25m
2026-07-16 CSN5032 - Jul 16, 10:04 UTCJul 16, 10:20 UTC15m
2026-07-16 CSN5031 - Jul 16, 08:05 UTCJul 16, 08:40 UTC35m
2026-07-16 CSN5031 - Jul 16, 05:15 UTCJul 16, 05:25 UTC10m
2026-07-15 CSN8587 - Jul 15, 13:50 UTCJul 15, 14:05 UTC15m
2026-07-15 CSN8966 - Jul 15, 12:20 UTCJul 15, 12:30 UTC10m
2026-07-15 CSN8965 - Jul 15, 06:25 UTCJul 15, 06:35 UTC10m
2026-07-15 CSN6850 - Jul 15, 03:35 UTCJul 15, 04:40 UTC1h 5m
2026-07-14 CSN6849 - Jul 14, 23:55 UTCJul 15, 00:10 UTC15m
2026-07-14 CSN3369 - Jul 14, 06:05 UTCJul 14, 11:00 UTC4h 55m
2026-07-14 CSN3369 - Jul 14, 03:50 UTCJul 14, 04:00 UTC10m
2026-07-14 CSN3590 - Jul 14, 01:20 UTCJul 14, 02:00 UTC40m
2026-07-13 CSN3589 - Jul 13, 12:20 UTCJul 13, 12:30 UTC10m
2026-07-13 CSN3584 - Jul 13, 09:20 UTCJul 13, 09:45 UTC25m
2026-07-13 CSN3583 - Jul 13, 03:05 UTCJul 13, 03:15 UTC10m
2026-07-13 CSN8738 - Jul 13, 01:20 UTCJul 13, 01:35 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-30E6 page for operator, model, and routing details .

Mode-S 7818F5 frequently asked

What is Mode-S code 7818F5?
7818F5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30E6.
Where is Mode-S 7818F5 registered?
Mode-S code 7818F5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7818F5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7818F5, octal 36014365, decimal 7,870,709.
What flights does 7818F5 operate?
Mode-S 7818F5 has broadcast 20 distinct callsigns, including CSN5032, CSN5031, CSN8354, CSN8117, CSN8118.