Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781949

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30F9 · AIRBUS A-350-900

Hex
781949
Octal
36014511
Decimal
7,870,793
Country
CN
Tail
B-30F9
Type
A359
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
216
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 781949.

Country allocation

The ICAO 24-bit address 781949 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
CSN326 China Southern Airlines 54 2026-07-26
CSN325 China Southern Airlines 29 2026-07-25
CSN382 China Southern Airlines 17 2026-05-13
CSN306 - 16 2026-07-17
CSN308 China Southern Airlines 14 2026-07-22
CSN307 China Southern Airlines 14 2026-07-26
CSN354 China Southern Airlines 12 2026-07-24
CSN381 China Southern Airlines 11 2026-05-12
CSN353 China Southern Airlines 10 2026-07-24
CSN305 - 9 2026-07-16
CSN338 - 7 2026-06-29
CSN337 - 6 2026-06-29
CSN322 China Southern Airlines 4 2026-04-13
CSN3503 - 2 2026-07-18
CSN348 China Southern Airlines 2 2026-05-23
CSN347 China Southern Airlines 2 2026-05-22
CSN303 - 2 2026-07-11
CSN3906 China Southern Airlines 1 2026-04-19
CSN3830 - 1 2026-07-23
CSN350 China Southern Airlines 1 2026-05-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN307 CAN → AMS Jul 26, 21:20 UTCJul 26, 21:45 UTC25m
2026-07-26 CSN326 SYD → CAN Jul 26, 10:10 UTCJul 26, 10:25 UTC15m
2026-07-26 CSN326 SYD → CAN Jul 26, 01:25 UTCJul 26, 09:15 UTC7h 51m
2026-07-25 CSN325 CAN → SYD Jul 25, 14:25 UTCJul 25, 22:45 UTC8h 20m
2026-07-25 CSN326 SYD → CAN Jul 25, 00:35 UTCJul 25, 08:15 UTC7h 40m
2026-07-24 CSN325 CAN → SYD Jul 24, 13:25 UTCJul 24, 22:05 UTC8h 40m
2026-07-24 CSN354 SIN → CAN Jul 24, 09:20 UTCJul 24, 09:40 UTC20m
2026-07-24 CSN354 SIN → CAN Jul 24, 06:20 UTCJul 24, 06:50 UTC30m
2026-07-24 CSN353 CAN → SIN Jul 24, 01:15 UTCJul 24, 04:30 UTC3h 15m
2026-07-23 CSN3830 - Jul 23, 15:20 UTCJul 23, 15:30 UTC10m
2026-07-22 CSN308 AMS → CAN Jul 22, 11:45 UTCJul 22, 17:25 UTC5h 40m
2026-07-21 CSN307 CAN → AMS Jul 21, 22:10 UTCJul 22, 04:45 UTC6h 35m
2026-07-21 CSN326 SYD → CAN Jul 21, 09:00 UTCJul 21, 09:20 UTC20m
2026-07-21 CSN326 SYD → CAN Jul 21, 00:35 UTCJul 21, 08:10 UTC7h 35m
2026-07-20 CSN325 CAN → SYD Jul 20, 13:25 UTCJul 20, 21:55 UTC8h 30m
2026-07-20 CSN326 SYD → CAN Jul 20, 08:40 UTCJul 20, 09:10 UTC30m
2026-07-20 CSN326 SYD → CAN Jul 20, 00:25 UTCJul 20, 07:55 UTC7h 30m
2026-07-19 CSN325 CAN → SYD Jul 19, 13:35 UTCJul 19, 22:10 UTC8h 35m
2026-07-19 CSN354 SIN → CAN Jul 19, 08:50 UTCJul 19, 09:10 UTC20m
2026-07-19 CSN354 SIN → CAN Jul 19, 05:55 UTCJul 19, 06:20 UTC25m
2026-07-19 CSN353 CAN → SIN Jul 19, 03:35 UTCJul 19, 04:05 UTC30m
2026-07-19 CSN353 CAN → SIN Jul 19, 01:00 UTCJul 19, 01:10 UTC10m
2026-07-18 CSN3503 - Jul 18, 08:30 UTCJul 18, 08:40 UTC10m
2026-07-17 CSN306 - Jul 17, 20:10 UTCJul 17, 20:29 UTC20m
2026-07-17 CSN306 - Jul 17, 09:40 UTCJul 17, 19:25 UTC9h 45m
2026-07-16 CSN305 - Jul 16, 17:20 UTCJul 17, 03:25 UTC10h 5m
2026-07-15 CSN326 - Jul 15, 08:30 UTCJul 15, 08:50 UTC20m
2026-07-15 CSN326 - Jul 15, 00:10 UTCJul 15, 07:45 UTC7h 35m
2026-07-14 CSN325 - Jul 14, 13:40 UTCJul 14, 22:25 UTC8h 45m
2026-07-14 CSN326 - Jul 14, 08:35 UTCJul 14, 09:05 UTC30m
2026-07-14 CSN326 - Jul 14, 00:20 UTCJul 14, 07:45 UTC7h 25m
2026-07-13 CSN325 - Jul 13, 13:20 UTCJul 13, 22:15 UTC8h 55m
2026-07-13 CSN326 - Jul 13, 08:55 UTCJul 13, 09:25 UTC30m
2026-07-13 CSN326 - Jul 13, 00:30 UTCJul 13, 08:05 UTC7h 35m
2026-07-12 CSN325 - Jul 12, 14:01 UTCJul 12, 22:35 UTC8h 35m
2026-07-11 CSN304 - Jul 11, 21:35 UTCJul 12, 04:05 UTC6h 30m
2026-07-11 CSN303 - Jul 11, 11:10 UTCJul 11, 18:00 UTC6h 50m
2026-07-10 CSN303 - Jul 10, 17:20 UTCJul 11, 16:15 UTC22h 56m
2026-07-10 CSN308 - Jul 10, 14:20 UTCJul 11, 14:15 UTC23h 56m
2026-07-10 CSN308 - Jul 10, 12:20 UTCJul 11, 11:55 UTC23h 35m
2026-07-10 CSN308 - Jul 10, 12:00 UTCJul 10, 17:55 UTC5h 55m
2026-07-09 CSN307 - Jul 9, 21:30 UTCJul 10, 04:15 UTC6h 45m
2026-07-09 CSN354 - Jul 9, 09:10 UTCJul 9, 09:50 UTC40m
2026-07-09 CSN354 - Jul 9, 06:05 UTCJul 9, 06:35 UTC30m
2026-07-09 CSN353 - Jul 9, 04:00 UTCJul 9, 04:30 UTC30m
2026-07-09 CSN353 - Jul 9, 01:30 UTCJul 9, 01:40 UTC10m
2026-07-08 CSN306 - Jul 8, 20:30 UTCJul 8, 20:45 UTC15m
2026-07-08 CSN306 - Jul 8, 09:40 UTCJul 8, 19:40 UTC10h 0m
2026-07-07 CSN305 - Jul 7, 17:25 UTCJul 8, 03:30 UTC10h 5m
2026-07-07 CSN354 - Jul 7, 09:50 UTCJul 7, 10:15 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-30F9 page for operator, model, and routing details .

Mode-S 781949 frequently asked

What is Mode-S code 781949?
781949 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30F9.
Where is Mode-S 781949 registered?
Mode-S code 781949 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781949 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781949, octal 36014511, decimal 7,870,793.
What flights does 781949 operate?
Mode-S 781949 has broadcast 20 distinct callsigns, including CSN326, CSN325, CSN382, CSN306, CSN308.