Apparatus

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sensors Mode-S transponder

781948

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30F8 · AIRBUS A-320neo

Hex
781948
Octal
36014510
Decimal
7,870,792
Country
CN
Tail
B-30F8
Type
A20N
No current signal · last broadcast Jul 26, 14:30 UTC
Flights observed
352
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:30 UTC

Last known position

Most recent position reported by Mode-S 781948.

Country allocation

The ICAO 24-bit address 781948 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
CSN3090 - 27 2026-07-04
CSN3089 - 25 2026-07-04
CSN8158 - 13 2026-07-11
CSN5079 - 12 2026-07-13
CSN8609 - 10 2026-07-02
CSN8157 - 10 2026-07-11
CSN5080 - 10 2026-07-13
CSN5086 China Southern Airlines 8 2026-07-26
CSN3613 China Southern Airlines 8 2026-07-21
CSN8469 - 7 2026-07-03
CSN8056 China Southern Airlines 7 2026-07-24
CSN8055 China Southern Airlines 7 2026-07-23
CSN5085 China Southern Airlines 7 2026-07-25
CSN8612 China Southern Airlines 6 2026-07-24
CSN8611 - 6 2026-07-20
CSN5853 China Southern Airlines 6 2026-07-19
CSN5795 China Southern Airlines 6 2026-05-13
CSN6479 China Southern Airlines 5 2026-07-19
CSN8474 - 4 2026-06-22
CSN8086 China Southern Airlines 4 2026-06-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN5867 SHE → HGH Jul 26, 13:45 UTCJul 26, 14:30 UTC45m
2026-07-26 CSN6312 SZX → SHE Jul 26, 11:00 UTCJul 26, 11:10 UTC10m
2026-07-26 CSN6312 SZX → SHE Jul 26, 08:30 UTCJul 26, 08:45 UTC15m
2026-07-26 CSN5086 SIN → SZX Jul 26, 06:30 UTCJul 26, 06:45 UTC16m
2026-07-26 CSN5086 SIN → SZX Jul 26, 02:45 UTCJul 26, 03:15 UTC30m
2026-07-25 CSN5085 SZX → SIN Jul 25, 19:30 UTCJul 25, 19:55 UTC25m
2026-07-25 CSN5085 SZX → SIN Jul 25, 16:30 UTCJul 25, 16:45 UTC15m
2026-07-25 CSN6254 HAK → SZX Jul 25, 03:20 UTCJul 25, 03:35 UTC15m
2026-07-25 CSN6253 SZX → HAK Jul 25, 00:45 UTCJul 25, 01:05 UTC20m
2026-07-24 CSN8612 JHG → SZX Jul 24, 15:50 UTCJul 24, 16:00 UTC10m
2026-07-24 CSN3798 HGH → SZX Jul 24, 08:50 UTCJul 24, 09:05 UTC15m
2026-07-24 CSN3797 SZX → HGH Jul 24, 03:50 UTCJul 24, 04:00 UTC10m
2026-07-24 CSN8056 CGK → SZX Jul 24, 00:25 UTCJul 24, 00:40 UTC15m
2026-07-23 CSN8056 CGK → SZX Jul 23, 20:00 UTCJul 23, 21:25 UTC1h 25m
2026-07-23 CSN8055 SZX → CGK Jul 23, 18:30 UTCJul 23, 18:45 UTC15m
2026-07-23 CSN8055 SZX → CGK Jul 23, 14:25 UTCJul 23, 14:40 UTC15m
2026-07-23 CSN8591 SZX → HGH Jul 23, 00:45 UTCJul 23, 00:55 UTC10m
2026-07-22 CSN6482 HRB → SZX Jul 22, 13:25 UTCJul 22, 13:45 UTC20m
2026-07-22 CSN6481 SZX → HRB Jul 22, 02:00 UTCJul 22, 11:15 UTC9h 15m
2026-07-21 CSN6498 SYX → SZX Jul 21, 16:35 UTCJul 21, 16:45 UTC10m
2026-07-21 CSN6497 SZX → SYX Jul 21, 12:45 UTCJul 21, 12:55 UTC10m
2026-07-21 CSN3613 SZX → CGQ Jul 21, 00:45 UTCJul 21, 07:15 UTC6h 30m
2026-07-20 CSN8612 JHG → SZX Jul 20, 15:55 UTCJul 20, 16:05 UTC10m
2026-07-20 CSN8611 - Jul 20, 10:40 UTCJul 20, 10:55 UTC15m
2026-07-20 CSN8477 - Jul 20, 03:00 UTCJul 20, 03:15 UTC15m
2026-07-20 CSN8056 - Jul 20, 01:05 UTCJul 20, 01:20 UTC15m
2026-07-19 CSN8056 - Jul 19, 20:35 UTCJul 19, 22:05 UTC1h 30m
2026-07-19 CSN8055 - Jul 19, 19:10 UTCJul 19, 19:25 UTC15m
2026-07-19 CSN6480 HGH → SZX Jul 19, 12:45 UTCJul 19, 13:25 UTC40m
2026-07-19 CSN6479 SZX → HGH Jul 19, 08:40 UTCJul 19, 08:50 UTC10m
2026-07-19 CSN5854 SYX → SZX Jul 19, 07:05 UTCJul 19, 07:25 UTC20m
2026-07-19 CSN5853 SZX → SYX Jul 19, 01:05 UTCJul 19, 01:15 UTC10m
2026-07-18 CSN5755 - Jul 18, 09:15 UTCJul 18, 09:30 UTC15m
2026-07-18 CSN8712 - Jul 18, 06:55 UTCJul 18, 07:35 UTC40m
2026-07-18 CSN8711 - Jul 18, 02:40 UTCJul 18, 02:50 UTC11m
2026-07-18 CSN8056 - Jul 18, 00:35 UTCJul 18, 00:55 UTC20m
2026-07-17 CSN8056 - Jul 17, 20:10 UTCJul 17, 21:39 UTC1h 30m
2026-07-17 CSN8055 - Jul 17, 18:40 UTCJul 17, 18:55 UTC15m
2026-07-17 CSN8055 - Jul 17, 14:35 UTCJul 17, 14:44 UTC10m
2026-07-17 CSN8492 TSN → SZX Jul 17, 13:00 UTCJul 17, 13:10 UTC10m
2026-07-17 CSN8491 - Jul 17, 05:50 UTCJul 17, 06:00 UTC10m
2026-07-16 CSN3351 - Jul 16, 23:35 UTCJul 16, 23:44 UTC10m
2026-07-16 CSN6480 - Jul 16, 12:44 UTCJul 16, 13:20 UTC35m
2026-07-16 CSN6479 - Jul 16, 07:45 UTCJul 16, 07:55 UTC10m
2026-07-16 CSN8056 - Jul 16, 01:00 UTCJul 16, 02:30 UTC1h 30m
2026-07-15 CSN8055 - Jul 15, 23:00 UTCJul 15, 23:15 UTC15m
2026-07-15 CSN8055 - Jul 15, 18:40 UTCJul 15, 18:50 UTC10m
2026-07-15 CSN6480 - Jul 15, 14:00 UTCJul 15, 15:15 UTC1h 15m
2026-07-15 CSN6479 - Jul 15, 10:20 UTCJul 15, 10:35 UTC15m
2026-07-15 CSN5102 - Jul 15, 07:55 UTCJul 15, 08:10 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-30F8 page for operator, model, and routing details .

Mode-S 781948 frequently asked

What is Mode-S code 781948?
781948 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30F8.
Where is Mode-S 781948 registered?
Mode-S code 781948 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781948 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781948, octal 36014510, decimal 7,870,792.
What flights does 781948 operate?
Mode-S 781948 has broadcast 20 distinct callsigns, including CSN3090, CSN3089, CSN8158, CSN5079, CSN8609.