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sensors Mode-S transponder

781F74

ICAO 24-bit transponder address · allocated to China

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

Hex
781F74
Octal
36017564
Decimal
7,872,372
Country
CN
Tail
B-32EE
Type
A359
Broadcasting now · callsign CSN322 · 32,125 ft
Flights observed
151
Distinct callsigns
20
Country
CN
Last broadcast
13m ago

Current position

781F74 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781F74 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 - 31 2026-07-11
CSN301 - 19 2026-07-11
CSN349 China Southern Airlines 13 2026-06-05
CSN350 China Southern Airlines 11 2026-06-05
CSN346 - 11 2026-06-14
CSN322 - 9 2026-07-14
CSN306 - 9 2026-07-09
CSN345 China Southern Airlines 7 2026-06-20
CSN321 - 7 2026-07-13
CSN347 China Southern Airlines 5 2026-06-24
CSN305 - 5 2026-07-08
CSN674 China Southern Airlines 4 2026-05-08
CSN8050 - 2 2026-07-12
CSN8049 - 2 2026-07-12
CSN6902 China Southern Airlines 2 2026-06-12
CSN6901 China Southern Airlines 2 2026-06-13
CSN673 China Southern Airlines 2 2026-05-07
CSN382 - 2 2026-07-07
CSN348 China Southern Airlines 2 2026-06-25
CSN346D - 2 2026-06-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN322 - Jul 14, 00:50 UTCJul 14, 01:00 UTC10m
2026-07-13 CSN321 - Jul 13, 13:50 UTCJul 13, 22:45 UTC8h 55m
2026-07-12 CSN8050 - Jul 12, 21:35 UTCJul 13, 04:00 UTC6h 25m
2026-07-12 CSN8049 - Jul 12, 11:30 UTCJul 12, 18:55 UTC7h 25m
2026-07-11 CSN302 - Jul 11, 20:45 UTCJul 11, 21:05 UTC20m
2026-07-11 CSN302 - Jul 11, 11:50 UTCJul 11, 20:00 UTC8h 10m
2026-07-11 CSN301 - Jul 11, 00:45 UTCJul 11, 09:05 UTC8h 20m
2026-07-10 CSN302 - Jul 10, 21:00 UTCJul 10, 21:40 UTC40m
2026-07-10 CSN302 - Jul 10, 12:25 UTCJul 10, 19:50 UTC7h 25m
2026-07-10 CSN301 - Jul 10, 01:20 UTCJul 10, 10:10 UTC8h 50m
2026-07-09 CSN306 - Jul 9, 21:40 UTCJul 9, 22:05 UTC25m
2026-07-09 CSN306 - Jul 9, 10:10 UTCJul 9, 20:55 UTC10h 45m
2026-07-08 CSN305 - Jul 8, 17:30 UTCJul 9, 03:30 UTC10h 0m
2026-07-08 CSN322 - Jul 8, 09:45 UTCJul 8, 09:55 UTC10m
2026-07-08 CSN322 - Jul 8, 00:45 UTCJul 8, 08:50 UTC8h 5m
2026-07-07 CSN321 CAN → MEL Jul 7, 14:50 UTCJul 7, 21:35 UTC6h 45m
2026-07-07 CSN321 CAN → MEL Jul 7, 13:30 UTCJul 7, 13:50 UTC20m
2026-07-07 CSN382 - Jul 7, 08:35 UTCJul 7, 08:50 UTC15m
2026-07-07 CSN382 - Jul 7, 00:35 UTCJul 7, 07:50 UTC7h 15m
2026-07-06 CSN381 - Jul 6, 14:00 UTCJul 6, 22:00 UTC8h 0m
2026-07-05 CSN8050 LGW → ABA Jul 5, 21:30 UTCJul 6, 04:05 UTC6h 35m
2026-07-05 CSN8049 - Jul 5, 11:45 UTCJul 5, 18:45 UTC7h 0m
2026-07-02 CSN302 SYD → CAN Jul 2, 20:55 UTCJul 2, 21:15 UTC20m
2026-07-02 CSN302 SYD → CAN Jul 2, 12:15 UTCJul 2, 20:05 UTC7h 50m
2026-07-02 CSN301 - Jul 2, 00:40 UTCJul 2, 08:55 UTC8h 15m
2026-06-27 CSN322 - Jun 27, 12:09 UTCJun 27, 12:29 UTC20m
2026-06-27 CSN322 - Jun 27, 03:44 UTCJun 27, 11:20 UTC7h 35m
2026-06-26 CSN321 CAN → MEL Jun 26, 18:04 UTCJun 27, 01:19 UTC7h 15m
2026-06-26 CSN321 CAN → MEL Jun 26, 16:49 UTCJun 26, 17:00 UTC10m
2026-06-25 CSN348 CDG → CAN Jun 25, 10:30 UTCJun 25, 16:59 UTC6h 30m
2026-06-24 CSN347 CAN → CDG Jun 24, 22:04 UTCJun 25, 05:05 UTC7h 0m
2026-06-24 CSN347 CAN → CDG Jun 24, 07:05 UTCJun 25, 05:05 UTC22h 0m
2026-06-24 CSN347 CAN → CDG Jun 24, 06:39 UTCJun 25, 05:00 UTC22h 20m
2026-06-24 CSN337 - Jun 24, 04:10 UTCJun 24, 05:09 UTC1h 0m
2026-06-23 CSN302 SYD → CAN Jun 23, 20:24 UTCJun 23, 20:40 UTC15m
2026-06-23 CSN302 SYD → CAN Jun 23, 11:49 UTCJun 23, 19:34 UTC7h 45m
2026-06-23 CSN301 - Jun 23, 00:39 UTCJun 23, 08:59 UTC8h 20m
2026-06-21 CSN346D - Jun 21, 22:10 UTCJun 21, 22:20 UTC10m
2026-06-21 CSN346D - Jun 21, 13:50 UTCJun 21, 19:45 UTC5h 55m
2026-06-20 CSN345 PEK → AMS Jun 20, 06:35 UTCJun 20, 16:05 UTC9h 30m
2026-06-14 CSN346 - Jun 14, 20:05 UTCJun 15, 02:15 UTC6h 10m
2026-06-14 CSN345 PEK → AMS Jun 14, 09:55 UTCJun 14, 16:05 UTC6h 10m
2026-06-13 CSN6901 URC → PKX Jun 13, 04:50 UTCJun 13, 05:00 UTC10m
2026-06-12 CSN6902 PKX → URC Jun 12, 07:30 UTCJun 12, 07:45 UTC15m
2026-06-12 CSN346 - Jun 12, 04:40 UTCJun 12, 04:55 UTC15m
2026-06-11 CSN346 - Jun 11, 20:00 UTCJun 12, 02:10 UTC6h 11m
2026-06-11 CSN345 PEK → AMS Jun 11, 06:35 UTCJun 11, 16:15 UTC9h 40m
2026-06-10 CSN6901 URC → PKX Jun 10, 04:55 UTCJun 10, 05:05 UTC10m
2026-06-09 CSN6902 PKX → URC Jun 9, 07:25 UTCJun 9, 07:35 UTC10m
2026-06-07 CSN346 AMS → PKX Jun 7, 04:45 UTCJun 7, 04:55 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-32EE page for operator, model, and routing details .

Mode-S 781F74 frequently asked

What is Mode-S code 781F74?
781F74 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32EE.
Where is Mode-S 781F74 registered?
Mode-S code 781F74 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781F74 broadcasting right now?
Yes. Mode-S 781F74 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781F74, octal 36017564, decimal 7,872,372.
What flights does 781F74 operate?
Mode-S 781F74 has broadcast 20 distinct callsigns, including CSN302, CSN301, CSN349, CSN350, CSN346.