Apparatus

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sensors Mode-S transponder

781E83

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32CR · AIRBUS A-350-900

Hex
781E83
Octal
36017203
Decimal
7,872,131
Country
CN
Tail
B-32CR
Type
A359
Broadcasting now · callsign CSN673 · 36,000 ft
Flights observed
83
Distinct callsigns
17
Country
CN
Last broadcast
6m ago

Current position

781E83 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781E83 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 17 distinct

Callsign Airline Flights Last seen
CSN306 China Southern Airlines 13 2026-05-17
CSN302 China Southern Airlines 12 2026-05-14
CSN674 China Southern Airlines 8 2026-05-28
CSN305 China Southern Airlines 8 2026-05-16
CSN301 China Southern Airlines 7 2026-05-14
CSN673 China Southern Airlines 6 2026-05-30
CSN322 China Southern Airlines 6 2026-05-16
CSN346 China Southern Airlines 4 2026-05-22
CSN321 China Southern Airlines 4 2026-05-15
CSN345 China Southern Airlines 3 2026-05-22
CSN6902 China Southern Airlines 2 2026-05-19
CSN6901 China Southern Airlines 2 2026-05-20
CSN350 China Southern Airlines 2 2026-05-08
CSN349 China Southern Airlines 2 2026-05-08
CSN6906 China Southern Airlines 1 2026-05-20
CSN6905 China Southern Airlines 1 2026-05-21
CSN3158 China Southern Airlines 1 2026-04-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSN673 PKX → LHR May 30, 06:40 UTCMay 30, 12:45 UTC6h 5m
2026-05-28 CSN674 LHR → PKX May 28, 05:20 UTCMay 28, 05:35 UTC15m
2026-05-27 CSN674 LHR → PKX May 27, 20:25 UTCMay 28, 02:55 UTC6h 30m
2026-05-27 CSN673 PKX → LHR May 27, 06:40 UTCMay 27, 16:50 UTC10h 10m
2026-05-24 CSN674 LHR → PKX May 24, 20:35 UTCMay 25, 02:45 UTC6h 10m
2026-05-24 CSN673 PKX → LHR May 24, 09:50 UTCMay 24, 16:45 UTC6h 55m
2026-05-22 CSN346 AMS → PKX May 22, 20:00 UTCMay 23, 01:50 UTC5h 50m
2026-05-22 CSN345 PEK → AMS May 22, 09:55 UTCMay 22, 16:35 UTC6h 40m
2026-05-21 CSN6905 URC → PKX May 21, 10:20 UTCMay 21, 10:35 UTC15m
2026-05-20 CSN6906 PKX → URC May 20, 13:05 UTCMay 20, 13:15 UTC10m
2026-05-20 CSN6901 URC → PKX May 20, 04:45 UTCMay 20, 05:00 UTC15m
2026-05-19 CSN6902 PKX → URC May 19, 07:25 UTCMay 19, 07:35 UTC10m
2026-05-19 CSN6901 URC → PKX May 19, 04:40 UTCMay 19, 04:55 UTC15m
2026-05-18 CSN6902 PKX → URC May 18, 07:25 UTCMay 18, 07:40 UTC15m
2026-05-17 CSN306 AKL → CAN May 17, 20:01 UTCMay 17, 20:15 UTC15m
2026-05-17 CSN306 AKL → CAN May 17, 09:25 UTCMay 17, 19:10 UTC9h 45m
2026-05-16 CSN305 CAN → AKL May 16, 17:15 UTCMay 17, 03:25 UTC10h 10m
2026-05-16 CSN322 MEL → CAN May 16, 10:25 UTCMay 16, 10:46 UTC20m
2026-05-16 CSN322 MEL → CAN May 16, 01:40 UTCMay 16, 09:31 UTC7h 51m
2026-05-15 CSN321 CAN → MEL May 15, 15:15 UTCMay 15, 23:50 UTC8h 35m
2026-05-14 CSN302 SYD → CAN May 14, 20:00 UTCMay 14, 20:30 UTC30m
2026-05-14 CSN302 SYD → CAN May 14, 11:45 UTCMay 14, 19:10 UTC7h 25m
2026-05-14 CSN301 CAN → SYD May 14, 00:30 UTCMay 14, 08:50 UTC8h 20m
2026-05-13 CSN302 SYD → CAN May 13, 20:20 UTCMay 13, 20:40 UTC20m
2026-05-13 CSN302 SYD → CAN May 13, 11:50 UTCMay 13, 19:30 UTC7h 40m
2026-05-13 CSN301 CAN → SYD May 13, 00:45 UTCMay 13, 08:55 UTC8h 10m
2026-05-12 CSN306 AKL → CAN May 12, 21:45 UTCMay 12, 22:05 UTC20m
2026-05-12 CSN306 AKL → CAN May 12, 10:55 UTCMay 12, 21:01 UTC10h 5m
2026-05-11 CSN305 CAN → AKL May 11, 17:25 UTCMay 12, 03:20 UTC9h 55m
2026-05-09 CSN302 SYD → CAN May 9, 20:40 UTCMay 9, 21:05 UTC25m
2026-05-09 CSN302 SYD → CAN May 9, 11:45 UTCMay 9, 19:49 UTC8h 5m
2026-05-09 CSN301 CAN → SYD May 9, 00:30 UTCMay 9, 08:30 UTC8h 0m
2026-05-08 CSN350 KUL → CAN May 8, 07:04 UTCMay 8, 07:24 UTC20m
2026-05-08 CSN349 CAN → KUL May 8, 05:00 UTCMay 8, 05:35 UTC35m
2026-05-07 CSN306 AKL → CAN May 7, 20:35 UTCMay 7, 21:00 UTC25m
2026-05-07 CSN306 AKL → CAN May 7, 09:30 UTCMay 7, 19:50 UTC10h 20m
2026-05-06 CSN305 CAN → AKL May 6, 17:10 UTCMay 7, 03:10 UTC9h 59m
2026-05-06 - - May 6, 08:01 UTCMay 6, 08:10 UTC10m
2026-05-05 CSN674 LHR → PKX May 5, 04:50 UTCMay 5, 05:05 UTC15m
2026-05-04 CSN674 LHR → PKX May 4, 20:20 UTCMay 5, 02:25 UTC6h 5m
2026-05-04 CSN673 PKX → LHR May 4, 06:40 UTCMay 4, 17:15 UTC10h 35m
2026-04-30 CSN674 LHR → PKX Apr 30, 05:30 UTCApr 30, 05:45 UTC15m
2026-04-29 CSN674 LHR → PKX Apr 29, 20:20 UTCApr 30, 02:55 UTC6h 34m
2026-04-29 CSN673 PKX → LHR Apr 29, 08:30 UTCApr 29, 16:30 UTC8h 1m
2026-04-28 CSN322 MEL → CAN Apr 28, 09:05 UTCApr 28, 09:30 UTC25m
2026-04-28 CSN322 MEL → CAN Apr 28, 00:45 UTCApr 28, 08:05 UTC7h 20m
2026-04-27 CSN321 CAN → MEL Apr 27, 13:45 UTCApr 27, 22:45 UTC9h 0m
2026-04-27 CSN350 KUL → CAN Apr 27, 06:20 UTCApr 27, 06:30 UTC10m
2026-04-27 CSN349 CAN → KUL Apr 27, 04:05 UTCApr 27, 04:40 UTC35m
2026-04-26 CSN302 SYD → CAN Apr 26, 19:55 UTCApr 26, 20:15 UTC20m

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-32CR page for operator, model, and routing details .

Mode-S 781E83 frequently asked

What is Mode-S code 781E83?
781E83 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32CR.
Where is Mode-S 781E83 registered?
Mode-S code 781E83 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E83 broadcasting right now?
Yes. Mode-S 781E83 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E83, octal 36017203, decimal 7,872,131.
What flights does 781E83 operate?
Mode-S 781E83 has broadcast 17 distinct callsigns, including CSN306, CSN302, CSN674, CSN305, CSN301.