Apparatus

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sensors Mode-S transponder

781FA8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32EV · AIRBUS A-320neo

Hex
781FA8
Octal
36017650
Decimal
7,872,424
Country
CN
Tail
B-32EV
Type
A20N
No current signal · last broadcast Jul 25, 12:40 UTC
Flights observed
114
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 12:40 UTC

Last known position

Most recent position reported by Mode-S 781FA8.

Country allocation

The ICAO 24-bit address 781FA8 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
CSN3081 - 10 2026-07-18
CSN3082 - 9 2026-07-18
CSN8023 China Southern Airlines 7 2026-07-20
CSN8024 China Southern Airlines 6 2026-07-20
CSN6063 - 5 2026-07-13
CSN371 - 4 2026-07-17
CSN8313 - 3 2026-07-15
CSN3049 China Southern Airlines 3 2026-06-03
CSN8598 China Southern Airlines 2 2026-04-27
CSN8597 China Southern Airlines 2 2026-04-27
CSN8316 China Southern Airlines 2 2026-05-29
CSN8314 - 2 2026-06-27
CSN8178 - 2 2026-07-15
CSN6499 China Southern Airlines 2 2026-05-30
CSN6307 - 2 2026-06-21
CSN6253 China Southern Airlines 2 2026-04-27
CSN5080 China Southern Airlines 2 2026-04-27
CSN5079 China Southern Airlines 2 2026-04-27
CSN3923 - 2 2026-06-26
CSN372 China Southern Airlines 2 2026-07-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 - - Jul 25, 12:30 UTCJul 25, 12:40 UTC10m
2026-07-25 CSN8998 HAK → SZX Jul 25, 06:40 UTCJul 25, 07:10 UTC30m
2026-07-23 CSN5466 YNT → CAN Jul 23, 15:15 UTCJul 23, 15:25 UTC10m
2026-07-22 CSN3409 CAN → KMG Jul 22, 02:05 UTCJul 22, 02:55 UTC50m
2026-07-20 CSN8024 BKK → CAN Jul 20, 11:25 UTCJul 20, 13:00 UTC1h 35m
2026-07-20 CSN8023 CAN → BKK Jul 20, 09:45 UTCJul 20, 10:15 UTC30m
2026-07-18 CSN3082 - Jul 18, 08:55 UTCJul 18, 09:10 UTC15m
2026-07-18 CSN3081 - Jul 18, 06:40 UTCJul 18, 07:00 UTC20m
2026-07-18 CSN372 HAN → CAN Jul 18, 01:34 UTCJul 18, 05:05 UTC3h 31m
2026-07-17 CSN371 - Jul 17, 15:29 UTCJul 17, 15:40 UTC10m
2026-07-17 CSN371 - Jul 17, 14:30 UTCJul 17, 14:39 UTC10m
2026-07-15 CSN8178 - Jul 15, 13:45 UTCJul 15, 14:05 UTC20m
2026-07-15 CSN8313 - Jul 15, 01:15 UTCJul 15, 11:15 UTC10h 0m
2026-07-14 CSN8178 - Jul 14, 13:25 UTCJul 14, 13:55 UTC30m
2026-07-14 CSN8177 - Jul 14, 10:35 UTCJul 14, 11:45 UTC1h 10m
2026-07-14 CSN3510 - Jul 14, 07:50 UTCJul 14, 08:05 UTC15m
2026-07-13 CSN6063 - Jul 13, 05:25 UTCJul 13, 10:50 UTC5h 25m
2026-07-12 CSN6063 - Jul 12, 14:15 UTCJul 13, 10:50 UTC20h 35m
2026-07-12 CSN3409 - Jul 12, 00:50 UTCJul 12, 01:00 UTC10m
2026-07-11 CSN3990 - Jul 11, 10:35 UTCJul 11, 10:50 UTC15m
2026-07-08 CSN3501 - Jul 8, 12:20 UTCJul 8, 13:05 UTC45m
2026-07-08 CSN3331 - Jul 8, 05:20 UTCJul 8, 05:30 UTC10m
2026-07-07 CSN6331 - Jul 7, 13:30 UTCJul 7, 13:45 UTC15m
2026-07-04 CSN3068 - Jul 4, 18:40 UTCJul 4, 20:10 UTC1h 30m
2026-07-04 CSN3067 - Jul 4, 09:00 UTCJul 4, 16:35 UTC7h 35m
2026-07-04 CSN3081 - Jul 4, 07:05 UTCJul 4, 07:45 UTC40m
2026-07-03 CSN3329 - Jul 3, 16:05 UTCJul 3, 16:15 UTC10m
2026-07-02 CSN3497 CAN → KMG Jul 2, 23:35 UTCJul 3, 00:15 UTC40m
2026-07-02 CSN3240 SZX → KWL Jul 2, 04:35 UTCJul 2, 04:45 UTC10m
2026-07-01 CSN3345 WUH → CAN Jul 1, 09:05 UTCJul 1, 09:20 UTC15m
2026-06-30 CSN6063 - Jun 30, 06:25 UTCJun 30, 12:30 UTC6h 5m
2026-06-29 CSN3489 - Jun 29, 11:29 UTCJun 29, 12:09 UTC40m
2026-06-27 CSN8314 - Jun 27, 05:59 UTCJun 27, 06:35 UTC35m
2026-06-27 CSN8313 - Jun 27, 01:39 UTCJun 27, 01:49 UTC10m
2026-06-26 CSN8024 - Jun 26, 12:10 UTCJun 26, 13:49 UTC1h 40m
2026-06-26 CSN8023 - Jun 26, 07:35 UTCJun 26, 10:50 UTC3h 15m
2026-06-26 CSN3923 - Jun 26, 01:39 UTCJun 26, 02:20 UTC40m
2026-06-22 CSN324 - Jun 22, 14:24 UTCJun 23, 02:40 UTC12h 15m
2026-06-22 CSN3082 - Jun 22, 09:10 UTCJun 22, 10:49 UTC1h 40m
2026-06-22 CSN3081 - Jun 22, 04:54 UTCJun 22, 07:00 UTC2h 5m
2026-06-21 CSN6307 - Jun 21, 03:49 UTCJun 21, 08:04 UTC4h 15m
2026-06-17 CSN8024 - Jun 17, 11:20 UTCJun 17, 12:55 UTC1h 35m
2026-06-17 CSN8023 - Jun 17, 08:20 UTCJun 17, 10:05 UTC1h 45m
2026-06-16 CSN3849 CAN → HGH Jun 16, 12:25 UTCJun 16, 12:35 UTC10m
2026-06-15 CSN8024 BKK → CAN Jun 15, 13:10 UTCJun 15, 14:45 UTC1h 35m
2026-06-15 CSN8023 - Jun 15, 09:40 UTCJun 15, 11:15 UTC1h 35m
2026-06-13 CSN3240 SZX → KWL Jun 13, 08:25 UTCJun 13, 08:35 UTC10m
2026-06-10 CSN3082 BKK → CAN Jun 10, 09:00 UTCJun 10, 10:40 UTC1h 40m
2026-06-10 CSN3081 CAN → BKK Jun 10, 05:30 UTCJun 10, 07:20 UTC1h 50m
2026-06-07 CSN3246 HET → CAN Jun 7, 16:40 UTCJun 7, 16:55 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-32EV page for operator, model, and routing details .

Mode-S 781FA8 frequently asked

What is Mode-S code 781FA8?
781FA8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32EV.
Where is Mode-S 781FA8 registered?
Mode-S code 781FA8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781FA8 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 12:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781FA8, octal 36017650, decimal 7,872,424.
What flights does 781FA8 operate?
Mode-S 781FA8 has broadcast 20 distinct callsigns, including CSN3081, CSN3082, CSN8023, CSN8024, CSN6063.