sensors Mode-S transponder

781919

ICAO 24-bit transponder address · allocated to China

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

Hex
781919
Octal
36014431
Decimal
7,870,745
Country
CN
Tail
B-30EE
Type
A20N
No current signal · last broadcast 4d ago
Flights observed
99
Distinct callsigns
20
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 781919.

Country allocation

The ICAO 24-bit address 781919 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
CSN6148 - 13 2026-07-16
CSN6624 - 9 2026-06-18
CSN6623 - 9 2026-06-15
CSN8920 China Southern Airlines 5 2026-07-24
CSN6782 China Southern Airlines 5 2026-05-31
CSN8919 China Southern Airlines 4 2026-06-14
CSN6781 - 4 2026-07-03
CSN6514 - 4 2026-06-25
CSN6630 China Southern Airlines 3 2026-05-14
CSN6629 - 3 2026-07-06
CSN6243 China Southern Airlines 3 2026-06-16
CSN3836 - 3 2026-06-21
CSN8752 China Southern Airlines 2 2026-06-12
CSN6762 China Southern Airlines 2 2026-04-30
CSN6758 China Southern Airlines 2 2026-05-01
CSN6736 China Southern Airlines 2 2026-05-19
CSN6717 - 2 2026-06-29
CSN6190 - 2 2026-07-08
CSN5671 China Southern Airlines 2 2026-05-08
CSN3978 - 2 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6294 KMG → SYX Jul 26, 12:20 UTCJul 26, 15:55 UTC3h 35m
2026-07-24 CSN8920 XIY → SYX Jul 24, 16:55 UTCJul 25, 06:10 UTC13h 15m
2026-07-22 CSN5520 - Jul 22, 12:10 UTCJul 22, 18:05 UTC5h 55m
2026-07-16 CSN6148 - Jul 16, 05:40 UTCJul 16, 10:15 UTC4h 35m
2026-07-14 CSN6148 - Jul 14, 05:50 UTCJul 14, 10:25 UTC4h 35m
2026-07-10 CSN6293 - Jul 10, 12:10 UTCJul 11, 00:00 UTC11h 51m
2026-07-08 CSN6190 - Jul 8, 04:40 UTCJul 8, 12:40 UTC8h 0m
2026-07-07 CSN6190 - Jul 7, 04:35 UTCJul 7, 12:40 UTC8h 5m
2026-07-06 CSN6189 - Jul 6, 12:25 UTCJul 7, 12:15 UTC23h 50m
2026-07-06 CSN6629 - Jul 6, 06:55 UTCJul 7, 04:40 UTC21h 45m
2026-07-05 CSN6629 - Jul 5, 13:20 UTCJul 6, 07:40 UTC18h 20m
2026-07-05 CSN6629 - Jul 5, 08:25 UTCJul 6, 07:40 UTC23h 15m
2026-07-04 CSN6148 - Jul 4, 11:15 UTCJul 5, 08:25 UTC21h 10m
2026-07-03 CSN6148 - Jul 3, 22:50 UTCJul 4, 11:35 UTC12h 45m
2026-07-03 CSN6781 - Jul 3, 09:10 UTCJul 4, 07:10 UTC22h 0m
2026-07-03 CSN6781 - Jul 3, 03:40 UTCJul 3, 23:00 UTC19h 20m
2026-07-03 CSN6781 - Jul 3, 00:45 UTCJul 3, 23:00 UTC22h 15m
2026-07-02 CSN6148 - Jul 2, 09:30 UTCJul 3, 04:00 UTC18h 30m
2026-07-02 CSN6148 - Jul 2, 02:55 UTCJul 3, 00:50 UTC21h 55m
2026-07-01 CSN6734 - Jul 1, 09:35 UTCJul 2, 03:00 UTC17h 25m
2026-06-30 CSN6716 PKX → SYX Jun 30, 13:00 UTCJun 30, 15:55 UTC2h 55m
2026-06-29 CSN6717 - Jun 29, 10:29 UTCJun 29, 10:50 UTC20m
2026-06-28 CSN6715 SYX → PKX Jun 28, 06:20 UTCJun 28, 06:49 UTC30m
2026-06-27 CSN6717 SYX → PKX Jun 27, 10:10 UTCJun 27, 10:34 UTC25m
2026-06-27 CSN6712 - Jun 27, 00:34 UTCJun 27, 08:14 UTC7h 40m
2026-06-26 CSN6360 - Jun 26, 10:30 UTCJun 26, 10:39 UTC10m
2026-06-25 CSN6514 - Jun 25, 13:00 UTCJun 26, 06:29 UTC17h 30m
2026-06-25 CSN6514 - Jun 25, 00:35 UTCJun 25, 13:20 UTC12h 45m
2026-06-24 CSN5173 - Jun 24, 05:05 UTCJun 24, 14:15 UTC9h 10m
2026-06-21 CSN8751 SYX → TFU Jun 21, 15:54 UTCJun 22, 05:49 UTC13h 55m
2026-06-21 CSN3836 - Jun 21, 01:39 UTCJun 21, 11:05 UTC9h 25m
2026-06-21 CSN3977 SYX → SZX Jun 21, 00:04 UTCJun 21, 00:19 UTC15m
2026-06-19 CSN3836 - Jun 19, 12:34 UTCJun 20, 06:29 UTC17h 55m
2026-06-19 CSN3978 - Jun 19, 03:20 UTCJun 19, 12:49 UTC9h 30m
2026-06-19 CSN3977 SYX → SZX Jun 19, 01:04 UTCJun 19, 01:15 UTC10m
2026-06-18 CSN6624 - Jun 18, 06:30 UTCJun 18, 17:00 UTC10h 30m
2026-06-17 CSN6624 - Jun 17, 09:30 UTCJun 18, 06:55 UTC21h 25m
2026-06-16 CSN6243 DQA → CSX Jun 16, 05:45 UTCJun 16, 09:20 UTC3h 35m
2026-06-15 CSN6243 DQA → CSX Jun 15, 13:45 UTCJun 16, 09:20 UTC19h 35m
2026-06-15 CSN6623 - Jun 15, 08:25 UTCJun 16, 06:04 UTC21h 40m
2026-06-14 CSN8919 SYX → XIY Jun 14, 15:50 UTCJun 15, 06:15 UTC14h 24m
2026-06-14 CSN8919 SYX → XIY Jun 14, 08:20 UTCJun 15, 06:15 UTC21h 54m
2026-06-14 CSN8919 SYX → XIY Jun 14, 07:55 UTCJun 15, 06:15 UTC22h 19m
2026-06-12 CSN8752 TFU → SYX Jun 12, 14:35 UTCJun 13, 06:05 UTC15h 29m
2026-06-12 CSN8752 TFU → SYX Jun 12, 09:05 UTCJun 13, 06:05 UTC20h 59m
2026-06-12 CSN6624 NKG → SYX Jun 12, 06:00 UTCJun 12, 14:40 UTC8h 40m
2026-06-11 CSN6624 NKG → SYX Jun 11, 09:10 UTCJun 12, 06:15 UTC21h 6m
2026-06-11 CSN8920 XIY → SYX Jun 11, 00:00 UTCJun 11, 09:15 UTC9h 15m
2026-06-10 CSN8920 XIY → SYX Jun 10, 12:20 UTCJun 11, 09:15 UTC20h 55m
2026-06-10 CSN8920 XIY → SYX Jun 10, 12:00 UTCJun 11, 09:15 UTC21h 15m

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

Mode-S 781919 frequently asked

What is Mode-S code 781919?
781919 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30EE.
Where is Mode-S 781919 registered?
Mode-S code 781919 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781919 broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781919, octal 36014431, decimal 7,870,745.
What flights does 781919 operate?
Mode-S 781919 has broadcast 20 distinct callsigns, including CSN6148, CSN6624, CSN6623, CSN8920, CSN6782.