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 CSN674 · 4,600 ft
Flights observed
162
Distinct callsigns
20
Country
CN
Last broadcast
4h 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 20 distinct

Callsign Airline Flights Last seen
CSN302 - 23 2026-07-08
CSN674 China Southern Airlines 21 2026-07-07
CSN306 China Southern Airlines 17 2026-06-27
CSN673 - 16 2026-07-14
CSN346 - 14 2026-07-13
CSN301 - 13 2026-07-08
CSN305 - 12 2026-06-26
CSN345 - 9 2026-07-12
CSN322 China Southern Airlines 6 2026-05-16
CSN347 China Southern Airlines 4 2026-06-16
CSN321 China Southern Airlines 4 2026-05-15
CSN6902 - 3 2026-07-11
CSN350 - 3 2026-06-26
CSN349 - 3 2026-06-26
CSN6901 China Southern Airlines 2 2026-05-20
CSN348 China Southern Airlines 2 2026-06-17
CSN316 - 2 2026-07-12
CSN315 - 2 2026-07-11
CSN6906 China Southern Airlines 1 2026-05-20
CSN6905 China Southern Airlines 1 2026-05-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN673 - Jul 14, 09:45 UTCJul 14, 16:25 UTC6h 40m
2026-07-14 CSN673 - Jul 14, 06:35 UTCJul 14, 06:45 UTC10m
2026-07-13 CSN346 - Jul 13, 04:40 UTCJul 13, 04:55 UTC15m
2026-07-12 CSN346 - Jul 12, 20:10 UTCJul 13, 02:15 UTC6h 5m
2026-07-12 CSN345 - Jul 12, 06:40 UTCJul 12, 16:10 UTC9h 30m
2026-07-12 CSN316 - Jul 12, 00:50 UTCJul 12, 01:15 UTC25m
2026-07-11 CSN315 - Jul 11, 22:10 UTCJul 11, 22:30 UTC20m
2026-07-11 CSN6902 - Jul 11, 08:05 UTCJul 11, 08:15 UTC10m
2026-07-10 - - Jul 10, 08:15 UTCJul 10, 08:25 UTC10m
2026-07-08 CSN302 - Jul 8, 20:50 UTCJul 8, 21:15 UTC25m
2026-07-08 CSN302 - Jul 8, 11:50 UTCJul 8, 20:00 UTC8h 10m
2026-07-08 CSN301 - Jul 8, 01:10 UTCJul 8, 09:15 UTC8h 5m
2026-07-07 CSN674 LHR → PKX Jul 7, 05:10 UTCJul 7, 05:30 UTC20m
2026-07-06 CSN674 LHR → PKX Jul 6, 20:20 UTCJul 7, 02:40 UTC6h 20m
2026-07-06 CSN673 - Jul 6, 06:40 UTCJul 6, 16:20 UTC9h 40m
2026-07-05 CSN346 - Jul 5, 04:15 UTCJul 5, 04:25 UTC10m
2026-07-04 CSN346 - Jul 4, 19:55 UTCJul 5, 01:50 UTC5h 55m
2026-07-04 CSN345 PEK → AMS Jul 4, 09:55 UTCJul 4, 16:15 UTC6h 20m
2026-07-04 CSN345 PEK → AMS Jul 4, 06:45 UTCJul 4, 06:55 UTC10m
2026-07-04 CSN316 - Jul 4, 00:50 UTCJul 4, 01:10 UTC20m
2026-07-03 CSN315 - Jul 3, 12:35 UTCJul 3, 12:55 UTC20m
2026-07-01 CSN674 LHR → PKX Jul 1, 20:25 UTCJul 2, 02:35 UTC6h 10m
2026-07-01 CSN673 - Jul 1, 06:50 UTCJul 1, 17:00 UTC10h 10m
2026-06-30 CSN346 - Jun 30, 04:30 UTCJun 30, 04:50 UTC20m
2026-06-29 CSN346 - Jun 29, 20:04 UTCJun 30, 01:55 UTC5h 51m
2026-06-29 CSN345 PEK → AMS Jun 29, 06:29 UTCJun 29, 16:10 UTC9h 40m
2026-06-28 CSN302 SYD → CAN Jun 28, 20:39 UTCJun 28, 21:04 UTC25m
2026-06-28 CSN302 SYD → CAN Jun 28, 12:05 UTCJun 28, 19:49 UTC7h 45m
2026-06-28 CSN301 - Jun 28, 01:40 UTCJun 28, 10:00 UTC8h 20m
2026-06-27 CSN306 AKL → CAN Jun 27, 20:09 UTCJun 27, 20:29 UTC20m
2026-06-27 CSN306 AKL → CAN Jun 27, 09:34 UTCJun 27, 19:24 UTC9h 50m
2026-06-26 CSN305 ZGN → AKL Jun 26, 17:50 UTCJun 27, 03:49 UTC10h 0m
2026-06-26 CSN350 - Jun 26, 06:15 UTCJun 26, 06:29 UTC15m
2026-06-26 CSN349 - Jun 26, 01:20 UTCJun 26, 04:24 UTC3h 5m
2026-06-25 CSN302 SYD → CAN Jun 25, 21:05 UTCJun 25, 21:29 UTC25m
2026-06-25 CSN302 SYD → CAN Jun 25, 12:30 UTCJun 25, 20:14 UTC7h 45m
2026-06-25 CSN301 - Jun 25, 02:25 UTCJun 25, 10:30 UTC8h 5m
2026-06-24 CSN302 SYD → CAN Jun 24, 20:35 UTCJun 24, 21:04 UTC30m
2026-06-24 CSN302 SYD → CAN Jun 24, 12:04 UTCJun 24, 19:49 UTC7h 45m
2026-06-24 CSN301 - Jun 24, 00:30 UTCJun 24, 08:45 UTC8h 15m
2026-06-23 CSN674 LHR → PKX Jun 23, 05:15 UTCJun 23, 05:29 UTC15m
2026-06-22 CSN674 LHR → PKX Jun 22, 20:19 UTCJun 23, 02:45 UTC6h 25m
2026-06-22 CSN673 - Jun 22, 06:39 UTCJun 22, 16:40 UTC10h 0m
2026-06-21 CSN674 LHR → PKX Jun 21, 05:04 UTCJun 21, 05:20 UTC15m
2026-06-20 CSN674 LHR → PKX Jun 20, 20:25 UTCJun 21, 02:40 UTC6h 15m
2026-06-20 CSN673 - Jun 20, 06:39 UTCJun 20, 16:39 UTC10h 0m
2026-06-19 CSN302 SYD → CAN Jun 19, 20:55 UTCJun 19, 21:09 UTC15m
2026-06-19 CSN302 SYD → CAN Jun 19, 11:54 UTCJun 19, 20:04 UTC8h 10m
2026-06-19 CSN301 - Jun 19, 01:15 UTCJun 19, 09:09 UTC7h 55m
2026-06-18 CSN302 SYD → CAN Jun 18, 11:45 UTCJun 18, 20:55 UTC9h 10m

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 20 distinct callsigns, including CSN302, CSN674, CSN306, CSN673, CSN346.