Apparatus

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sensors Mode-S transponder

781B10

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-322F · AIRBUS A-320neo

Hex
781B10
Octal
36015420
Decimal
7,871,248
Country
CN
Tail
B-322F
Type
A20N
No current signal · last broadcast Jul 25, 00:40 UTC
Flights observed
176
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 00:40 UTC

Last known position

Most recent position reported by Mode-S 781B10.

Country allocation

The ICAO 24-bit address 781B10 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
CSN8079 China Southern Airlines 25 2026-07-19
CSN3033 - 23 2026-07-20
CSN8080 - 21 2026-07-19
CSN3034 China Southern Airlines 18 2026-07-22
CSN3035 China Southern Airlines 10 2026-05-17
CSN6092 China Southern Airlines 9 2026-07-24
CSN6090 China Southern Airlines 9 2026-07-22
CSN6089 China Southern Airlines 8 2026-07-22
CSN3499 - 7 2026-07-04
CSN3036 China Southern Airlines 7 2026-05-05
CSN8150 China Southern Airlines 6 2026-07-23
CSN8149 - 5 2026-07-11
CSN6091 - 5 2026-06-28
CSN6060 - 3 2026-06-22
CSN3415 - 3 2026-06-25
CSN6059 - 2 2026-07-17
CSN3992 - 2 2026-04-29
CSN3711 China Southern Airlines 2 2026-05-24
CSN3493 - 2 2026-06-15
CSN3184 China Southern Airlines 2 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CSN3132 SJW → CAN Jul 25, 00:20 UTCJul 25, 00:40 UTC20m
2026-07-24 CSN3131 CAN → SJW Jul 24, 14:20 UTCJul 24, 14:45 UTC25m
2026-07-24 CSN6092 VTE → CAN Jul 24, 05:55 UTCJul 24, 09:45 UTC3h 50m
2026-07-23 CSN8150 VTE → CAN Jul 23, 05:10 UTCJul 23, 05:25 UTC15m
2026-07-22 CSN6090 SGN → CAN Jul 22, 21:55 UTCJul 22, 22:25 UTC30m
2026-07-22 CSN6089 CAN → SGN Jul 22, 16:10 UTCJul 22, 16:20 UTC10m
2026-07-22 CSN3034 CNX → CAN Jul 22, 11:50 UTCJul 22, 13:05 UTC1h 15m
2026-07-20 CSN6090 - Jul 20, 22:05 UTCJul 20, 22:30 UTC25m
2026-07-20 CSN6089 CAN → SGN Jul 20, 16:35 UTCJul 20, 16:45 UTC10m
2026-07-20 CSN3034 - Jul 20, 12:45 UTCJul 20, 13:55 UTC1h 10m
2026-07-20 CSN3033 - Jul 20, 10:25 UTCJul 20, 11:35 UTC1h 10m
2026-07-20 CSN3200 TAO → CAN Jul 20, 07:10 UTCJul 20, 07:20 UTC10m
2026-07-19 CSN8080 - Jul 19, 05:55 UTCJul 19, 06:10 UTC15m
2026-07-19 CSN8079 CAN → BKK Jul 19, 03:55 UTCJul 19, 04:10 UTC15m
2026-07-19 CSN8079 CAN → BKK Jul 19, 02:05 UTCJul 19, 02:45 UTC40m
2026-07-18 CSN6090 - Jul 18, 22:20 UTCJul 18, 22:40 UTC20m
2026-07-18 CSN6089 CAN → SGN Jul 18, 16:30 UTCJul 18, 16:40 UTC10m
2026-07-18 CSN3034 - Jul 18, 11:55 UTCJul 18, 13:20 UTC1h 25m
2026-07-18 CSN3033 - Jul 18, 08:55 UTCJul 18, 11:00 UTC2h 5m
2026-07-18 CSN8150 - Jul 18, 04:50 UTCJul 18, 05:15 UTC25m
2026-07-17 CSN6059 - Jul 17, 05:10 UTCJul 17, 05:20 UTC10m
2026-07-16 CSN8479 - Jul 16, 08:40 UTCJul 16, 08:50 UTC10m
2026-07-15 CSN8080 - Jul 15, 06:00 UTCJul 15, 06:10 UTC10m
2026-07-15 CSN8079 - Jul 15, 04:05 UTCJul 15, 04:30 UTC25m
2026-07-13 CSN6090 - Jul 13, 22:00 UTCJul 13, 22:30 UTC30m
2026-07-13 CSN6089 - Jul 13, 16:15 UTCJul 13, 16:25 UTC10m
2026-07-13 CSN3034 - Jul 13, 12:05 UTCJul 13, 13:20 UTC1h 15m
2026-07-13 CSN3033 - Jul 13, 09:25 UTCJul 13, 10:40 UTC1h 15m
2026-07-12 CSN3034 - Jul 12, 12:01 UTCJul 12, 13:15 UTC1h 15m
2026-07-12 CSN3033 - Jul 12, 09:20 UTCJul 12, 10:35 UTC1h 15m
2026-07-12 CSN3033 - Jul 12, 08:15 UTCJul 12, 08:30 UTC15m
2026-07-12 CSN8150 - Jul 12, 01:20 UTCJul 12, 05:25 UTC4h 5m
2026-07-11 CSN6090 - Jul 11, 21:35 UTCJul 11, 21:55 UTC20m
2026-07-11 CSN6089 - Jul 11, 16:10 UTCJul 11, 16:20 UTC10m
2026-07-11 CSN3034 - Jul 11, 11:55 UTCJul 11, 13:10 UTC1h 15m
2026-07-11 CSN3033 - Jul 11, 10:20 UTCJul 11, 10:40 UTC20m
2026-07-11 CSN3033 - Jul 11, 09:25 UTCJul 11, 09:40 UTC15m
2026-07-11 CSN3033 - Jul 11, 08:25 UTCJul 11, 08:40 UTC15m
2026-07-11 CSN8149 - Jul 11, 01:15 UTCJul 11, 05:20 UTC4h 5m
2026-07-10 CSN3034 - Jul 10, 11:45 UTCJul 10, 13:00 UTC1h 15m
2026-07-10 CSN3033 - Jul 10, 09:20 UTCJul 10, 10:40 UTC1h 20m
2026-07-09 CSN3034 - Jul 9, 13:45 UTCJul 9, 14:45 UTC1h 0m
2026-07-09 CSN3033 - Jul 9, 10:25 UTCJul 9, 12:40 UTC2h 15m
2026-07-09 CSN8150 - Jul 9, 01:35 UTCJul 9, 05:20 UTC3h 45m
2026-07-08 CSN6090 - Jul 8, 22:00 UTCJul 8, 22:30 UTC30m
2026-07-08 CSN6089 - Jul 8, 16:15 UTCJul 8, 16:25 UTC10m
2026-07-08 CSN3034 - Jul 8, 11:50 UTCJul 8, 13:10 UTC1h 20m
2026-07-08 CSN3033 - Jul 8, 02:55 UTCJul 8, 10:45 UTC7h 50m
2026-07-04 CSN3499 - Jul 4, 12:20 UTCJul 4, 13:10 UTC50m
2026-07-04 CSN8080 - Jul 4, 07:40 UTCJul 4, 09:00 UTC1h 20m

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-322F page for operator, model, and routing details .

Mode-S 781B10 frequently asked

What is Mode-S code 781B10?
781B10 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-322F.
Where is Mode-S 781B10 registered?
Mode-S code 781B10 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781B10 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 00:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781B10, octal 36015420, decimal 7,871,248.
What flights does 781B10 operate?
Mode-S 781B10 has broadcast 20 distinct callsigns, including CSN8079, CSN3033, CSN8080, CSN3034, CSN3035.