Apparatus

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sensors Mode-S transponder

781707

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-309M · AIRBUS A-320neo

Hex
781707
Octal
36013407
Decimal
7,870,215
Country
CN
Tail
B-309M
Type
A20N
No current signal · last broadcast 1d ago
Flights observed
120
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 781707.

Country allocation

The ICAO 24-bit address 781707 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
CSN652 - 8 2026-07-12
CSN651 - 6 2026-07-11
CSN6309 China Southern Airlines 5 2026-06-12
CSN8700 China Southern Airlines 4 2026-06-01
CSN6529 - 4 2026-07-13
CSN6469 - 4 2026-07-08
CSN6388 China Southern Airlines 4 2026-05-07
CSN6304 - 4 2026-06-21
CSN6303 - 4 2026-06-26
CSN3955 China Southern Airlines 4 2026-06-02
CSN8699 China Southern Airlines 3 2026-05-31
CSN8598 China Southern Airlines 3 2026-05-30
CSN8597 China Southern Airlines 3 2026-06-02
CSN665 China Southern Airlines 3 2026-04-19
CSN6483 China Southern Airlines 3 2026-05-02
CSN6310 China Southern Airlines 3 2026-06-12
CSN6265 China Southern Airlines 3 2026-05-26
CSN6253 China Southern Airlines 3 2026-06-02
CSN3956 China Southern Airlines 3 2026-05-30
CSN8558 - 2 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CSN6529 - Jul 13, 02:15 UTCJul 13, 10:30 UTC8h 15m
2026-07-12 CSN6674 - Jul 12, 13:50 UTCJul 13, 10:30 UTC20h 40m
2026-07-12 CSN652 - Jul 12, 03:05 UTCJul 12, 14:01 UTC10h 55m
2026-07-11 CSN651 - Jul 11, 08:01 UTCJul 12, 01:15 UTC17h 15m
2026-07-11 CSN5857 - Jul 11, 01:05 UTCJul 11, 08:45 UTC7h 40m
2026-07-10 CSN6529 - Jul 10, 01:50 UTCJul 11, 01:40 UTC23h 50m
2026-07-09 CSN6529 - Jul 9, 15:15 UTCJul 10, 01:50 UTC10h 35m
2026-07-09 CSN6529 - Jul 9, 04:40 UTCJul 10, 01:50 UTC21h 10m
2026-07-08 CSN6470 - Jul 8, 11:10 UTCJul 9, 04:55 UTC17h 45m
2026-07-08 CSN6469 - Jul 8, 01:20 UTCJul 8, 11:25 UTC10h 5m
2026-07-07 CSN6469 - Jul 7, 10:10 UTCJul 8, 05:25 UTC19h 15m
2026-07-06 CSN8558 - Jul 6, 16:30 UTCJul 7, 10:15 UTC17h 45m
2026-07-06 CSN8558 - Jul 6, 01:15 UTCJul 6, 16:45 UTC15h 30m
2026-07-04 CSN6367 - Jul 4, 05:35 UTCJul 4, 13:40 UTC8h 5m
2026-07-03 CSN652 - Jul 3, 03:00 UTCJul 3, 03:25 UTC25m
2026-07-03 CSN651 - Jul 3, 01:00 UTCJul 3, 01:20 UTC20m
2026-07-01 CSN6465 - Jul 1, 14:30 UTCJul 2, 09:20 UTC18h 50m
2026-06-30 CSN6469 - Jun 30, 04:50 UTCJun 30, 12:05 UTC7h 15m
2026-06-29 CSN6469 - Jun 29, 12:45 UTCJun 30, 05:20 UTC16h 36m
2026-06-29 CSN6517 - Jun 29, 02:09 UTCJun 29, 13:30 UTC11h 20m
2026-06-28 CSN6517 - Jun 28, 12:35 UTCJun 29, 02:50 UTC14h 15m
2026-06-28 CSN6673 - Jun 28, 06:24 UTCJun 29, 02:50 UTC20h 25m
2026-06-28 CSN652 - Jun 28, 02:49 UTCJun 28, 12:50 UTC10h 0m
2026-06-28 CSN651 - Jun 28, 00:59 UTCJun 28, 01:19 UTC20m
2026-06-27 CSN682 - Jun 27, 04:05 UTCJun 27, 04:29 UTC25m
2026-06-27 CSN681 - Jun 27, 01:54 UTCJun 27, 02:20 UTC25m
2026-06-26 CSN6303 - Jun 26, 09:05 UTCJun 26, 09:24 UTC20m
2026-06-24 CSN5366 - Jun 24, 09:49 UTCJun 25, 04:54 UTC19h 5m
2026-06-23 CSN3601 CAN → SHE Jun 23, 15:34 UTCJun 24, 09:59 UTC18h 25m
2026-06-23 CSN6315 - Jun 23, 02:24 UTCJun 23, 15:44 UTC13h 20m
2026-06-22 CSN6315 - Jun 22, 11:19 UTCJun 23, 06:15 UTC18h 55m
2026-06-22 CSN6302 - Jun 22, 07:49 UTCJun 23, 06:15 UTC22h 25m
2026-06-22 CSN6301 - Jun 22, 00:55 UTCJun 22, 11:30 UTC10h 35m
2026-06-21 CSN6301 - Jun 21, 15:34 UTCJun 22, 11:30 UTC19h 55m
2026-06-21 CSN6304 - Jun 21, 13:15 UTCJun 21, 13:24 UTC10m
2026-06-21 CSN6303 - Jun 21, 00:49 UTCJun 21, 08:49 UTC8h 0m
2026-06-19 CSN6348 - Jun 19, 11:45 UTCJun 19, 12:04 UTC20m
2026-06-17 CSN6312 - Jun 17, 06:00 UTCJun 17, 06:10 UTC10m
2026-06-12 CSN6403 SHE → CKG Jun 12, 12:00 UTCJun 13, 07:20 UTC19h 19m
2026-06-12 CSN6310 SZX → SHE Jun 12, 09:40 UTCJun 12, 09:55 UTC15m
2026-06-12 CSN6309 SHE → SZX Jun 12, 07:30 UTCJun 12, 07:40 UTC10m
2026-06-12 CSN6309 SHE → SZX Jun 12, 01:15 UTCJun 12, 05:10 UTC3h 55m
2026-06-11 CSN6416 XIY → SHE Jun 11, 04:35 UTCJun 12, 01:25 UTC20h 51m
2026-06-11 CSN6416 XIY → SHE Jun 11, 01:20 UTCJun 11, 04:35 UTC3h 15m
2026-06-07 CSN5306 SHF → SHE Jun 7, 14:35 UTCJun 8, 02:40 UTC12h 5m
2026-06-06 CSN6310 SZX → SHE Jun 6, 10:25 UTCJun 6, 10:34 UTC10m
2026-06-06 CSN6309 SHE → SZX Jun 6, 07:40 UTCJun 6, 08:00 UTC20m
2026-06-06 CSN6309 SHE → SZX Jun 6, 05:10 UTCJun 6, 05:25 UTC15m
2026-06-04 CSN5811 SHE → HGH Jun 4, 04:55 UTCJun 4, 05:10 UTC15m
2026-06-03 CSN6310 SZX → SHE Jun 3, 09:45 UTCJun 3, 10:00 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-309M page for operator, model, and routing details .

Mode-S 781707 frequently asked

What is Mode-S code 781707?
781707 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-309M.
Where is Mode-S 781707 registered?
Mode-S code 781707 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781707 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781707, octal 36013407, decimal 7,870,215.
What flights does 781707 operate?
Mode-S 781707 has broadcast 20 distinct callsigns, including CSN652, CSN651, CSN6309, CSN8700, CSN6529.