Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781AFD

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-322A · AIRBUS A-321neo

Hex
781AFD
Octal
36015375
Decimal
7,871,229
Country
CN
Tail
B-322A
Type
A21N
No current signal · last broadcast 9h ago
Flights observed
83
Distinct callsigns
20
Country
CN
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 781AFD.

Country allocation

The ICAO 24-bit address 781AFD 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
CSN3038 China Southern Airlines 10 2026-05-27
CSN3037 China Southern Airlines 8 2026-05-27
CSN8490 China Southern Airlines 6 2026-05-27
CSN8489 China Southern Airlines 5 2026-05-27
CSN626 China Southern Airlines 5 2026-05-18
CSN625 China Southern Airlines 4 2026-05-18
CSN389 China Southern Airlines 4 2026-05-12
CSN388 China Southern Airlines 4 2026-05-25
CSN390 China Southern Airlines 3 2026-05-12
CSN3489 China Southern Airlines 3 2026-05-29
CSN3086 China Southern Airlines 3 2026-04-29
CSN8336 China Southern Airlines 2 2026-04-27
CSN8102 China Southern Airlines 2 2026-05-22
CSN8101 China Southern Airlines 2 2026-05-22
CSN8048 China Southern Airlines 2 2026-04-24
CSN395 China Southern Airlines 2 2026-05-04
CSN387 China Southern Airlines 2 2026-05-03
CSN3085 China Southern Airlines 2 2026-04-28
CSN8482 China Southern Airlines 1 2026-04-28
CSN8481 China Southern Airlines 1 2026-04-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSN3489 CAN → KMG May 29, 15:55 UTCMay 29, 16:10 UTC15m
2026-05-28 CSN3489 CAN → KMG May 28, 11:35 UTCMay 28, 12:20 UTC45m
2026-05-27 CSN8490 SIN → CAN May 27, 23:00 UTCMay 27, 23:35 UTC35m
2026-05-27 CSN8490 SIN → CAN May 27, 19:55 UTCMay 27, 20:20 UTC25m
2026-05-27 CSN8489 CAN → SIN May 27, 18:15 UTCMay 27, 18:25 UTC10m
2026-05-27 CSN3038 CGK → CAN May 27, 10:25 UTCMay 27, 10:45 UTC20m
2026-05-27 CSN3038 CGK → CAN May 27, 06:15 UTCMay 27, 07:45 UTC1h 30m
2026-05-27 CSN3037 CAN → CGK May 27, 04:34 UTCMay 27, 04:49 UTC15m
2026-05-27 CSN3037 CAN → CGK May 27, 00:25 UTCMay 27, 00:34 UTC10m
2026-05-25 CSN8073 CAN → PEN May 25, 11:15 UTCMay 25, 11:25 UTC10m
2026-05-25 CSN388 CGK → CAN May 25, 06:15 UTCMay 25, 06:30 UTC15m
2026-05-25 CSN388 CGK → CAN May 25, 02:15 UTCMay 25, 03:40 UTC1h 25m
2026-05-24 CSN3878 FOC → CAN May 24, 09:25 UTCMay 24, 09:40 UTC15m
2026-05-23 CSN3038 CGK → CAN May 23, 10:30 UTCMay 23, 10:50 UTC20m
2026-05-23 CSN3038 CGK → CAN May 23, 06:25 UTCMay 23, 07:55 UTC1h 30m
2026-05-23 CSN3037 CAN → CGK May 23, 04:30 UTCMay 23, 04:45 UTC15m
2026-05-23 CSN3037 CAN → CGK May 23, 00:30 UTCMay 23, 00:40 UTC10m
2026-05-22 CSN8102 NRT → CAN May 22, 06:40 UTCMay 22, 08:05 UTC1h 25m
2026-05-22 CSN8101 CAN → NRT May 22, 02:55 UTCMay 22, 04:25 UTC1h 30m
2026-05-20 CSN3539 CAN → KHN May 20, 04:25 UTCMay 20, 04:35 UTC10m
2026-05-18 CSN626 DPS → CAN May 18, 21:00 UTCMay 18, 21:35 UTC35m
2026-05-18 CSN625 CAN → DPS May 18, 10:50 UTCMay 18, 19:20 UTC8h 29m
2026-05-16 CSN8490 SIN → CAN May 16, 23:45 UTCMay 17, 00:05 UTC20m
2026-05-16 CSN8490 SIN → CAN May 16, 20:40 UTCMay 16, 21:05 UTC25m
2026-05-16 CSN8489 CAN → SIN May 16, 18:50 UTCMay 16, 19:05 UTC15m
2026-05-16 CSN8489 CAN → SIN May 16, 16:00 UTCMay 16, 16:10 UTC10m
2026-05-15 CSN8102 NRT → CAN May 15, 06:05 UTCMay 15, 07:20 UTC1h 15m
2026-05-15 CSN8101 CAN → NRT May 15, 02:55 UTCMay 15, 04:40 UTC1h 45m
2026-05-12 CSN390 KIX → CAN May 12, 07:05 UTCMay 12, 07:45 UTC40m
2026-05-12 CSN389 CAN → KIX May 12, 04:00 UTCMay 12, 04:45 UTC45m
2026-05-10 CSN8159 CAN → SGN May 10, 01:30 UTCMay 10, 01:39 UTC10m
2026-05-09 CSN626 DPS → CAN May 9, 21:00 UTCMay 9, 21:30 UTC30m
2026-05-09 CSN625 CAN → DPS May 9, 10:50 UTCMay 9, 19:14 UTC8h 25m
2026-05-06 CSN390 KIX → CAN May 6, 07:05 UTCMay 6, 07:50 UTC45m
2026-05-06 CSN389 CAN → KIX May 6, 04:05 UTCMay 6, 04:30 UTC25m
2026-05-05 CSN389 CAN → KIX May 5, 06:20 UTCMay 6, 04:30 UTC22h 10m
2026-05-04 CSN395 CAN → PEN May 4, 09:05 UTCMay 4, 09:15 UTC10m
2026-05-04 CSN388 CGK → CAN May 4, 06:15 UTCMay 4, 06:50 UTC35m
2026-05-04 CSN388 CGK → CAN May 4, 02:10 UTCMay 4, 03:40 UTC1h 30m
2026-05-03 CSN387 CAN → CGK May 3, 16:09 UTCMay 3, 16:20 UTC10m
2026-05-03 CSN387 CAN → CGK May 3, 12:00 UTCMay 3, 12:10 UTC10m
2026-05-02 CSN395 CAN → PEN May 2, 09:05 UTCMay 2, 09:20 UTC15m
2026-04-30 CSN626 DPS → CAN Apr 30, 21:00 UTCApr 30, 21:30 UTC30m
2026-04-30 CSN625 CAN → DPS Apr 30, 11:00 UTCApr 30, 19:20 UTC8h 20m
2026-04-29 CSN3086 HND → CAN Apr 29, 01:54 UTCApr 29, 03:24 UTC1h 30m
2026-04-28 CSN3085 CAN → HND Apr 28, 10:10 UTCApr 28, 11:30 UTC1h 20m
2026-04-28 CSN8482 DPS → CAN Apr 28, 05:00 UTCApr 28, 05:15 UTC15m
2026-04-27 CSN8481 CAN → DPS Apr 27, 18:45 UTCApr 28, 03:10 UTC8h 25m
2026-04-27 CSN8336 BKI → CAN Apr 27, 13:25 UTCApr 27, 13:45 UTC20m
2026-04-27 CSN8336 BKI → CAN Apr 27, 11:20 UTCApr 27, 11:30 UTC10m

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

Mode-S 781AFD frequently asked

What is Mode-S code 781AFD?
781AFD is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-322A.
Where is Mode-S 781AFD registered?
Mode-S code 781AFD is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781AFD broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781AFD, octal 36015375, decimal 7,871,229.
What flights does 781AFD operate?
Mode-S 781AFD has broadcast 20 distinct callsigns, including CSN3038, CSN3037, CSN8490, CSN8489, CSN626.