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 6h ago
Flights observed
318
Distinct callsigns
20
Country
CN
Last broadcast
6h 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
CSN5032 - 23 2026-06-17
CSN5031 - 21 2026-06-17
CSN8048 - 14 2026-07-09
CSN8047 - 13 2026-07-09
CSN8354 - 9 2026-07-13
CSN8117 China Southern Airlines 9 2026-05-16
CSN5080 China Southern Airlines 8 2026-05-30
CSN8353 - 7 2026-07-13
CSN8118 China Southern Airlines 7 2026-05-16
CSN3577 - 7 2026-07-10
CSN5079 China Southern Airlines 6 2026-05-30
CSN6549 - 5 2026-07-01
CSN6482 China Southern Airlines 5 2026-06-18
CSN6481 - 5 2026-06-28
CSN3578 - 5 2026-07-11
CSN6592 China Southern Airlines 4 2026-06-08
CSN6591 China Southern Airlines 4 2026-06-08
CSN3649 China Southern Airlines 4 2026-06-01
CSN3369 - 4 2026-07-05
CSN3213 - 4 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN8424 - Jul 14, 15:05 UTCJul 14, 15:15 UTC10m
2026-07-14 CSN8423 - Jul 14, 07:35 UTCJul 14, 07:50 UTC15m
2026-07-14 CSN3560 - Jul 14, 05:35 UTCJul 14, 05:45 UTC10m
2026-07-14 CSN3559 - Jul 14, 00:20 UTCJul 14, 00:30 UTC10m
2026-07-13 CSN8354 - Jul 13, 22:35 UTCJul 13, 22:55 UTC20m
2026-07-13 CSN8354 - Jul 13, 17:45 UTCJul 13, 19:15 UTC1h 30m
2026-07-13 CSN8353 - Jul 13, 16:00 UTCJul 13, 16:10 UTC10m
2026-07-13 CSN8353 - Jul 13, 11:55 UTCJul 13, 12:10 UTC15m
2026-07-13 CSN3090 - Jul 13, 08:45 UTCJul 13, 09:15 UTC30m
2026-07-13 CSN3090 - Jul 13, 06:01 UTCJul 13, 06:45 UTC45m
2026-07-13 CSN3089 - Jul 13, 03:40 UTCJul 13, 04:15 UTC35m
2026-07-13 CSN3089 - Jul 13, 01:15 UTCJul 13, 01:25 UTC10m
2026-07-12 CSN3236 - Jul 12, 12:05 UTCJul 12, 16:40 UTC4h 35m
2026-07-12 CSN8965 - Jul 12, 04:55 UTCJul 12, 05:10 UTC15m
2026-07-11 CSN6498 - Jul 11, 16:30 UTCJul 11, 16:40 UTC10m
2026-07-11 CSN6497 - Jul 11, 12:40 UTCJul 11, 12:55 UTC15m
2026-07-11 CSN3552 - Jul 11, 08:55 UTCJul 11, 09:40 UTC45m
2026-07-11 CSN3551 - Jul 11, 04:10 UTCJul 11, 04:25 UTC15m
2026-07-11 CSN3578 - Jul 11, 02:20 UTCJul 11, 02:35 UTC15m
2026-07-10 CSN3577 - Jul 10, 14:10 UTCJul 10, 14:20 UTC10m
2026-07-10 CSN3626 - Jul 10, 11:55 UTCJul 10, 12:45 UTC50m
2026-07-10 CSN3625 - Jul 10, 07:10 UTCJul 10, 07:20 UTC10m
2026-07-10 CSN3576 - Jul 10, 05:00 UTCJul 10, 05:25 UTC25m
2026-07-09 CSN3568 - Jul 9, 23:50 UTCJul 10, 00:05 UTC15m
2026-07-09 CSN3568 - Jul 9, 22:45 UTCJul 9, 23:00 UTC15m
2026-07-09 CSN8048 - Jul 9, 14:00 UTCJul 9, 14:30 UTC30m
2026-07-09 CSN8047 - Jul 9, 12:05 UTCJul 9, 12:35 UTC30m
2026-07-09 CSN8047 - Jul 9, 09:15 UTCJul 9, 09:25 UTC10m
2026-07-09 CSN3570 - Jul 9, 05:50 UTCJul 9, 06:35 UTC45m
2026-07-08 CSN6756 - Jul 8, 03:25 UTCJul 8, 14:10 UTC10h 45m
2026-07-08 CSN6755 - Jul 8, 02:05 UTCJul 8, 02:15 UTC10m
2026-07-07 CSN3798 - Jul 7, 11:20 UTCJul 7, 11:30 UTC10m
2026-07-07 CSN3797 - Jul 7, 06:20 UTCJul 7, 06:30 UTC10m
2026-07-07 CSN3578 - Jul 7, 02:50 UTCJul 7, 03:00 UTC10m
2026-07-06 CSN3669 - Jul 6, 15:05 UTCJul 6, 15:15 UTC10m
2026-07-06 CSN5820 - Jul 6, 11:55 UTCJul 6, 12:15 UTC20m
2026-07-06 CSN5819 - Jul 6, 02:05 UTCJul 6, 02:20 UTC15m
2026-07-05 CSN3370 - Jul 5, 14:35 UTCJul 5, 15:00 UTC25m
2026-07-05 CSN3369 - Jul 5, 06:20 UTCJul 5, 13:40 UTC7h 20m
2026-07-05 CSN3369 - Jul 5, 04:05 UTCJul 5, 04:15 UTC10m
2026-07-05 CSN8578 - Jul 5, 02:25 UTCJul 5, 02:45 UTC20m
2026-07-04 CSN8577 - Jul 4, 17:10 UTCJul 4, 17:20 UTC10m
2026-07-04 CSN3456 - Jul 4, 13:40 UTCJul 4, 13:50 UTC10m
2026-07-04 CSN3455 - Jul 4, 08:50 UTCJul 4, 09:10 UTC20m
2026-07-04 CSN3352 - Jul 4, 06:00 UTCJul 4, 06:10 UTC10m
2026-07-03 CSN3351 - Jul 3, 23:25 UTCJul 3, 23:35 UTC10m
2026-07-03 CSN8048 - Jul 3, 17:20 UTCJul 3, 17:40 UTC20m
2026-07-03 CSN8048 - Jul 3, 14:10 UTCJul 3, 14:35 UTC25m
2026-07-03 CSN8047 - Jul 3, 12:10 UTCJul 3, 12:35 UTC25m
2026-07-03 CSN8047 - Jul 3, 09:05 UTCJul 3, 09:15 UTC10m

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 6h 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 CSN5032, CSN5031, CSN8048, CSN8047, CSN8354.