Apparatus

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sensors Mode-S transponder

781918

ICAO 24-bit transponder address · allocated to China

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

Hex
781918
Octal
36014430
Decimal
7,870,744
Country
CN
Tail
B-30ED
Type
A21N
No current signal · last broadcast 1h ago
Flights observed
169
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 781918.

Country allocation

The ICAO 24-bit address 781918 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
CSN5031 China Southern Airlines 17 2026-05-29
CSN5032 China Southern Airlines 16 2026-05-29
CSN8117 China Southern Airlines 9 2026-05-16
CSN8048 China Southern Airlines 8 2026-05-25
CSN8354 China Southern Airlines 7 2026-05-16
CSN8118 China Southern Airlines 7 2026-05-16
CSN8047 China Southern Airlines 7 2026-05-25
CSN5080 China Southern Airlines 6 2026-05-30
CSN5079 China Southern Airlines 6 2026-05-30
CSN8353 China Southern Airlines 5 2026-05-16
CSN6482 China Southern Airlines 4 2026-05-04
CSN3912 China Southern Airlines 3 2026-05-13
CSN3911 China Southern Airlines 3 2026-05-13
CSN3649 China Southern Airlines 3 2026-05-24
CSN3213 China Southern Airlines 3 2026-05-14
CSN8736 China Southern Airlines 2 2026-05-02
CSN6756 China Southern Airlines 2 2026-05-27
CSN6592 China Southern Airlines 2 2026-05-28
CSN6591 China Southern Airlines 2 2026-05-27
CSN6481 China Southern Airlines 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN5080 KUL → SZX May 30, 18:15 UTCMay 30, 18:30 UTC15m
2026-05-30 CSN5079 SZX → KUL May 30, 16:15 UTCMay 30, 16:40 UTC25m
2026-05-30 CSN5079 SZX → KUL May 30, 13:15 UTCMay 30, 13:25 UTC10m
2026-05-30 CSN8496 XIY → SZX May 30, 10:50 UTCMay 30, 11:00 UTC10m
2026-05-30 CSN8495 SZX → XIY May 30, 04:30 UTCMay 30, 04:50 UTC20m
2026-05-30 CSN3578 NKG → SZX May 30, 02:06 UTCMay 30, 02:30 UTC24m
2026-05-29 CSN3577 SZX → NKG May 29, 16:55 UTCMay 29, 17:10 UTC15m
2026-05-29 CSN5032 KUL → SZX May 29, 11:30 UTCMay 29, 11:40 UTC10m
2026-05-29 CSN5032 KUL → SZX May 29, 10:25 UTCMay 29, 10:45 UTC20m
2026-05-29 CSN5032 KUL → SZX May 29, 08:00 UTCMay 29, 08:10 UTC10m
2026-05-29 CSN5031 SZX → KUL May 29, 06:20 UTCMay 29, 06:40 UTC20m
2026-05-29 CSN5031 SZX → KUL May 29, 03:05 UTCMay 29, 03:20 UTC15m
2026-05-28 CSN3626 KHN → CAN May 28, 12:30 UTCMay 28, 13:30 UTC1h 0m
2026-05-28 CSN6592 NGB → SZX May 28, 00:35 UTCMay 28, 04:50 UTC4h 15m
2026-05-27 CSN6591 SZX → NGB May 27, 23:50 UTCMay 28, 00:05 UTC15m
2026-05-27 CSN6756 DDG → SYX May 27, 13:55 UTCMay 27, 14:20 UTC25m
2026-05-27 CSN6756 DDG → SYX May 27, 09:10 UTCMay 27, 09:25 UTC15m
2026-05-27 CSN6755 SZX → PVG May 27, 02:09 UTCMay 27, 02:19 UTC10m
2026-05-26 CSN6548 HGH → SZX May 26, 14:55 UTCMay 26, 15:49 UTC55m
2026-05-26 CSN6547 SZX → HGH May 26, 10:44 UTCMay 26, 11:00 UTC15m
2026-05-26 CSN6621 SZX → XIY May 26, 02:19 UTCMay 26, 02:29 UTC10m
2026-05-25 CSN8048 SIN → SZX May 25, 16:35 UTCMay 25, 17:05 UTC30m
2026-05-25 CSN8048 SIN → SZX May 25, 13:30 UTCMay 25, 13:55 UTC25m
2026-05-25 CSN8047 SZX → SIN May 25, 10:50 UTCMay 25, 11:20 UTC30m
2026-05-25 CSN8047 SZX → SIN May 25, 07:55 UTCMay 25, 08:05 UTC10m
2026-05-24 CSN3649 CAN → FOC May 24, 23:00 UTCMay 24, 23:15 UTC15m
2026-05-24 CSN3956 HAK → SZX May 24, 16:05 UTCMay 24, 16:20 UTC15m
2026-05-24 CSN3955 SZX → HAK May 24, 13:15 UTCMay 24, 13:30 UTC15m
2026-05-24 CSN3256 SHA → SZX May 24, 10:40 UTCMay 24, 11:00 UTC20m
2026-05-24 CSN3255 SZX → SHA May 24, 05:40 UTCMay 24, 05:55 UTC15m
2026-05-24 CSN3255 SZX → SHA May 24, 04:45 UTCMay 24, 04:55 UTC10m
2026-05-23 CSN5032 KUL → SZX May 23, 08:40 UTCMay 23, 08:55 UTC15m
2026-05-23 CSN5031 SZX → KUL May 23, 06:00 UTCMay 23, 07:00 UTC1h 0m
2026-05-23 CSN8588 - May 23, 01:00 UTCMay 23, 01:10 UTC10m
2026-05-22 CSN8587 - May 22, 16:20 UTCMay 22, 16:30 UTC10m
2026-05-22 CSN6752 PVG → SZX May 22, 14:00 UTCMay 22, 14:40 UTC40m
2026-05-22 CSN6751 SZX → PVG May 22, 07:00 UTCMay 22, 07:15 UTC15m
2026-05-22 CSN3406 CKG → CAN May 22, 05:10 UTCMay 22, 05:30 UTC20m
2026-05-21 CSN3405 CAN → CKG May 21, 23:10 UTCMay 21, 23:30 UTC20m
2026-05-21 CSN8048 SIN → SZX May 21, 17:20 UTCMay 21, 17:40 UTC20m
2026-05-21 CSN8048 SIN → SZX May 21, 14:05 UTCMay 21, 14:25 UTC20m
2026-05-21 CSN8047 SZX → SIN May 21, 11:55 UTCMay 21, 12:15 UTC20m
2026-05-20 CSN8577 SZX → WUH May 20, 16:25 UTCMay 20, 16:35 UTC10m
2026-05-20 CSN3798 HGH → SZX May 20, 08:50 UTCMay 20, 09:50 UTC1h 0m
2026-05-19 CSN3641 SZX → CKG May 19, 13:25 UTCMay 19, 13:40 UTC15m
2026-05-19 CSN8083 SZX → HAN May 19, 04:50 UTCMay 19, 05:10 UTC20m
2026-05-19 CSN3578 NKG → SZX May 19, 02:00 UTCMay 19, 02:10 UTC10m
2026-05-18 CSN3577 SZX → NKG May 18, 13:35 UTCMay 18, 13:45 UTC10m
2026-05-18 CSN5032 KUL → SZX May 18, 07:45 UTCMay 18, 08:01 UTC15m
2026-05-18 CSN5031 SZX → KUL May 18, 06:01 UTCMay 18, 06:25 UTC25m

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

Mode-S 781918 frequently asked

What is Mode-S code 781918?
781918 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30ED.
Where is Mode-S 781918 registered?
Mode-S code 781918 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781918 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781918, octal 36014430, decimal 7,870,744.
What flights does 781918 operate?
Mode-S 781918 has broadcast 20 distinct callsigns, including CSN5031, CSN5032, CSN8117, CSN8048, CSN8354.