Apparatus

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sensors Mode-S transponder

7818F2

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30E1 · AIRBUS A-321neo

Hex
7818F2
Octal
36014362
Decimal
7,870,706
Country
CN
Tail
B-30E1
Type
A21N
No current signal · last broadcast 45m ago
Flights observed
42
Distinct callsigns
19
Country
CN
Last broadcast
45m ago

Last known position

Most recent position reported by Mode-S 7818F2.

Country allocation

The ICAO 24-bit address 7818F2 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 19 distinct

Callsign Airline Flights Last seen
CSN6762 China Southern Airlines 5 2026-05-06
CSN6758 China Southern Airlines 5 2026-05-25
CSN6782 China Southern Airlines 4 2026-05-15
CSN6757 China Southern Airlines 3 2026-05-02
CSN6624 China Southern Airlines 3 2026-05-22
CSN6148 China Southern Airlines 3 2026-05-29
CSN6780 China Southern Airlines 2 2026-04-20
CSN6736 China Southern Airlines 2 2026-05-13
CSN6623 China Southern Airlines 2 2026-05-27
CSN3978 China Southern Airlines 2 2026-05-26
CSN3977 China Southern Airlines 2 2026-05-25
CSN3836 China Southern Airlines 2 2026-05-11
CSN6754 China Southern Airlines 1 2026-05-25
CSN6735 - 1 2026-05-13
CSN6734 China Southern Airlines 1 2026-04-22
CSN6669 China Southern Airlines 1 2026-05-19
CSN6227 China Southern Airlines 1 2026-05-30
CSN6147 China Southern Airlines 1 2026-05-28
CSN3835 China Southern Airlines 1 2026-05-20

Recent flights last 42

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN6227 SYX → CKG May 30, 00:05 UTCMay 30, 04:30 UTC4h 25m
2026-05-29 CSN6148 HRB → SYX May 29, 05:15 UTCMay 29, 12:45 UTC7h 30m
2026-05-28 CSN6147 SYX → HRB May 28, 07:25 UTCMay 29, 05:40 UTC22h 15m
2026-05-27 CSN6623 SYX → NKG May 27, 09:10 UTCMay 28, 07:35 UTC22h 25m
2026-05-26 CSN3978 SZX → SYX May 26, 01:34 UTCMay 26, 01:49 UTC15m
2026-05-25 CSN3977 SYX → SZX May 25, 23:45 UTCMay 26, 00:00 UTC15m
2026-05-25 CSN6758 SZX → SYX May 25, 15:30 UTCMay 25, 15:45 UTC15m
2026-05-25 CSN6754 PVG → SYX May 25, 02:10 UTCMay 25, 07:05 UTC4h 55m
2026-05-22 CSN6624 NKG → SYX May 22, 05:35 UTCMay 22, 05:55 UTC20m
2026-05-20 CSN3835 SYX → PVG May 20, 05:00 UTCMay 20, 10:55 UTC5h 55m
2026-05-20 CSN3978 SZX → SYX May 20, 01:40 UTCMay 20, 01:55 UTC15m
2026-05-19 CSN3977 SYX → SZX May 19, 23:40 UTCMay 20, 00:00 UTC20m
2026-05-19 CSN6669 SYX → CGQ May 19, 04:20 UTCMay 19, 08:30 UTC4h 10m
2026-05-17 CSN6148 HRB → SYX May 17, 09:30 UTCMay 17, 10:00 UTC30m
2026-05-15 CSN6782 PVG → SYX May 15, 10:10 UTCMay 15, 14:35 UTC4h 25m
2026-05-13 CSN6736 CAN → SYX May 13, 16:00 UTCMay 13, 16:10 UTC10m
2026-05-13 CSN6735 - May 13, 14:15 UTCMay 13, 14:30 UTC15m
2026-05-12 CSN6782 PVG → SYX May 12, 09:05 UTCMay 12, 14:25 UTC5h 20m
2026-05-11 CSN3836 PVG → SYX May 11, 10:35 UTCMay 12, 09:05 UTC22h 31m
2026-05-11 CSN3836 PVG → SYX May 11, 05:00 UTCMay 11, 10:45 UTC5h 45m
2026-05-09 CSN6782 PVG → SYX May 9, 09:00 UTCMay 9, 14:35 UTC5h 35m
2026-05-07 CSN6782 PVG → SYX May 7, 09:25 UTCMay 7, 14:35 UTC5h 10m
2026-05-06 CSN6758 SZX → SYX May 6, 15:40 UTCMay 6, 15:55 UTC15m
2026-05-06 CSN6762 SHE → SYX May 6, 04:10 UTCMay 6, 08:10 UTC4h 0m
2026-05-03 CSN6758 SZX → SYX May 3, 16:34 UTCMay 3, 16:55 UTC20m
2026-05-02 CSN6762 SHE → SYX May 2, 15:25 UTCMay 3, 08:15 UTC16h 49m
2026-05-02 CSN6757 SYX → SZX May 2, 13:35 UTCMay 2, 13:50 UTC15m
2026-04-29 CSN6758 SZX → SYX Apr 29, 18:50 UTCApr 30, 07:10 UTC12h 19m
2026-04-29 CSN6757 SYX → SZX Apr 29, 16:50 UTCApr 29, 17:10 UTC20m
2026-04-28 CSN6758 SZX → SYX Apr 28, 16:55 UTCApr 29, 10:40 UTC17h 45m
2026-04-28 CSN6757 SYX → SZX Apr 28, 14:55 UTCApr 28, 15:10 UTC15m
2026-04-27 CSN6762 SHE → SYX Apr 27, 15:40 UTCApr 28, 08:20 UTC16h 40m
2026-04-27 CSN6762 SHE → SYX Apr 27, 10:25 UTCApr 28, 08:20 UTC21h 55m
2026-04-27 CSN6624 NKG → SYX Apr 27, 06:25 UTCApr 27, 15:50 UTC9h 25m
2026-04-26 CSN6624 NKG → SYX Apr 26, 13:50 UTCApr 27, 10:25 UTC20h 35m
2026-04-26 CSN6623 SYX → NKG Apr 26, 09:10 UTCApr 27, 06:35 UTC21h 25m
2026-04-23 CSN6148 HRB → SYX Apr 23, 16:25 UTCApr 24, 10:05 UTC17h 40m
2026-04-23 CSN6762 SHE → SYX Apr 23, 08:05 UTCApr 23, 08:20 UTC15m
2026-04-22 CSN6734 CAN → SYX Apr 22, 06:10 UTCApr 22, 06:20 UTC10m
2026-04-20 CSN6780 CAN → HAK Apr 20, 15:10 UTCApr 20, 15:20 UTC10m
2026-04-13 CSN6780 CAN → HAK Apr 13, 14:55 UTCApr 13, 15:05 UTC10m
2026-04-12 CSN6736 CAN → SYX Apr 12, 17:15 UTCApr 12, 17:30 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-30E1 page for operator, model, and routing details .

Mode-S 7818F2 frequently asked

What is Mode-S code 7818F2?
7818F2 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30E1.
Where is Mode-S 7818F2 registered?
Mode-S code 7818F2 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7818F2 broadcasting right now?
No active broadcast right now. Last signal was 45m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7818F2, octal 36014362, decimal 7,870,706.
What flights does 7818F2 operate?
Mode-S 7818F2 has broadcast 19 distinct callsigns, including CSN6762, CSN6758, CSN6782, CSN6757, CSN6624.