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sensors Mode-S transponder

781361

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1243 · BOEING 787-9 Dreamliner

Hex
781361
Octal
36011541
Decimal
7,869,281
Country
CN
Tail
B-1243
Type
B789
Broadcasting now · callsign CSN680 · 36,975 ft
Flights observed
127
Distinct callsigns
20
Country
CN
Last broadcast
22m ago

Current position

781361 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781361 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
CSN8172 - 15 2026-07-13
CSN8171 - 10 2026-07-12
CSN679 - 7 2026-07-14
CSN634 - 7 2026-07-04
CSN3092 China Southern Airlines 7 2026-05-12
CSN304 - 7 2026-07-02
CSN8066 - 6 2026-07-07
CSN354 - 6 2026-06-23
CSN303 - 6 2026-07-02
CSN8065 - 5 2026-07-07
CSN633 - 5 2026-07-03
CSN680 - 4 2026-07-14
CSN608 China Southern Airlines 4 2026-05-31
CSN607 China Southern Airlines 4 2026-05-31
CSN336 - 4 2026-07-06
CSN8069 China Southern Airlines 3 2026-05-05
CSN689 China Southern Airlines 3 2026-05-06
CSN8070 China Southern Airlines 2 2026-04-14
CSN690 China Southern Airlines 2 2026-05-07
CSN6041 China Southern Airlines 2 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSN680 - Jul 14, 12:50 UTCJul 14, 14:15 UTC1h 25m
2026-07-14 CSN679 - Jul 14, 02:35 UTCJul 14, 03:00 UTC25m
2026-07-13 CSN679 - Jul 13, 17:40 UTCJul 14, 02:00 UTC8h 20m
2026-07-13 CSN8172 - Jul 13, 01:30 UTCJul 13, 01:40 UTC10m
2026-07-12 CSN8172 - Jul 12, 18:50 UTCJul 12, 23:05 UTC4h 15m
2026-07-12 CSN8171 - Jul 12, 07:20 UTCJul 12, 14:55 UTC7h 35m
2026-07-12 CSN8172 - Jul 12, 02:01 UTCJul 12, 02:15 UTC15m
2026-07-11 CSN8172 - Jul 11, 19:10 UTCJul 11, 23:30 UTC4h 20m
2026-07-11 CSN8171 - Jul 11, 07:35 UTCJul 11, 15:10 UTC7h 35m
2026-07-10 CSN3115 - Jul 10, 10:40 UTCJul 10, 11:05 UTC25m
2026-07-10 CSN8172 - Jul 10, 00:30 UTCJul 10, 00:50 UTC20m
2026-07-09 CSN8172 - Jul 9, 17:50 UTCJul 9, 22:05 UTC4h 15m
2026-07-09 CSN8171 - Jul 9, 07:20 UTCJul 9, 15:10 UTC7h 50m
2026-07-07 CSN8066 - Jul 7, 11:40 UTCJul 7, 13:25 UTC1h 45m
2026-07-07 CSN8065 - Jul 7, 01:35 UTCJul 7, 03:30 UTC1h 55m
2026-07-06 CSN336 - Jul 6, 07:55 UTCJul 6, 08:15 UTC20m
2026-07-05 CSN336 - Jul 5, 21:05 UTCJul 6, 07:10 UTC10h 5m
2026-07-05 CSN335 ZGN → AKL Jul 5, 07:55 UTCJul 5, 17:40 UTC9h 45m
2026-07-04 CSN634 - Jul 4, 15:25 UTCJul 4, 19:55 UTC4h 30m
2026-07-03 CSN633 - Jul 3, 19:45 UTCJul 3, 23:05 UTC3h 20m
2026-07-03 CSN633 - Jul 3, 02:40 UTCJul 3, 23:05 UTC20h 25m
2026-07-03 CSN633 - Jul 3, 00:20 UTCJul 3, 23:05 UTC22h 45m
2026-07-02 CSN304 - Jul 2, 22:20 UTCJul 3, 21:25 UTC23h 5m
2026-07-02 CSN304 - Jul 2, 21:20 UTCJul 3, 20:15 UTC22h 55m
2026-07-02 CSN303 - Jul 2, 10:45 UTCJul 2, 18:15 UTC7h 30m
2026-06-29 CSN8172 ICN → CGQ Jun 29, 00:39 UTCJun 29, 00:49 UTC10m
2026-06-28 CSN8172 ICN → CGQ Jun 28, 17:50 UTCJun 28, 22:10 UTC4h 20m
2026-06-28 CSN8171 - Jun 28, 10:44 UTCJun 28, 15:09 UTC4h 25m
2026-06-28 CSN8172 ICN → CGQ Jun 28, 00:55 UTCJun 28, 01:04 UTC10m
2026-06-27 CSN8172 ICN → CGQ Jun 27, 17:59 UTCJun 27, 22:25 UTC4h 25m
2026-06-27 CSN8171 - Jun 27, 14:54 UTCJun 27, 15:00 UTC5m
2026-06-27 CSN8171 - Jun 27, 07:15 UTCJun 27, 11:09 UTC3h 55m
2026-06-27 CSN8172 ICN → CGQ Jun 27, 00:50 UTCJun 27, 01:00 UTC10m
2026-06-26 CSN8172 ICN → CGQ Jun 26, 17:50 UTCJun 26, 22:14 UTC4h 25m
2026-06-26 CSN8171 - Jun 26, 10:20 UTCJun 26, 14:44 UTC4h 25m
2026-06-26 CSN8171 - Jun 26, 07:20 UTCJun 26, 07:30 UTC10m
2026-06-26 CSN8172 ICN → CGQ Jun 26, 00:55 UTCJun 26, 01:10 UTC15m
2026-06-25 CSN8172 ICN → CGQ Jun 25, 17:54 UTCJun 25, 22:20 UTC4h 25m
2026-06-25 CSN8171 - Jun 25, 07:15 UTCJun 25, 14:29 UTC7h 15m
2026-06-23 CSN392 - Jun 23, 17:34 UTCJun 23, 19:44 UTC2h 10m
2026-06-23 CSN391 - Jun 23, 12:35 UTCJun 23, 15:40 UTC3h 5m
2026-06-23 CSN354 - Jun 23, 08:45 UTCJun 23, 08:59 UTC15m
2026-06-23 CSN354 - Jun 23, 05:54 UTCJun 23, 06:15 UTC20m
2026-06-23 CSN353 - Jun 23, 00:54 UTCJun 23, 03:45 UTC2h 50m
2026-06-22 CSN8066 - Jun 22, 11:44 UTCJun 22, 16:14 UTC4h 30m
2026-06-21 CSN8065 - Jun 21, 09:10 UTCJun 22, 03:10 UTC18h 0m
2026-06-21 CSN3081 - Jun 21, 05:25 UTCJun 21, 07:00 UTC1h 35m
2026-06-19 CSN6042 FRA → URC Jun 19, 18:20 UTCJun 20, 00:14 UTC5h 55m
2026-06-18 CSN6041 URC → FRA Jun 18, 20:20 UTCJun 19, 14:49 UTC18h 29m
2026-06-18 CSN6041 URC → FRA Jun 18, 20:05 UTCJun 19, 14:49 UTC18h 44m

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-1243 page for operator, model, and routing details .

Mode-S 781361 frequently asked

What is Mode-S code 781361?
781361 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1243.
Where is Mode-S 781361 registered?
Mode-S code 781361 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781361 broadcasting right now?
Yes. Mode-S 781361 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781361, octal 36011541, decimal 7,869,281.
What flights does 781361 operate?
Mode-S 781361 has broadcast 20 distinct callsigns, including CSN8172, CSN8171, CSN679, CSN634, CSN3092.