Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

781742

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-20CU · BOEING 737 MAX 8

Hex
781742
Octal
36013502
Decimal
7,870,274
Country
CN
Tail
B-20CU
Type
B38M
No current signal · last broadcast 18h ago
Flights observed
57
Distinct callsigns
18
Country
CN
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 781742.

Country allocation

The ICAO 24-bit address 781742 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 18 distinct

Callsign Airline Flights Last seen
CSN8301 China Southern Airlines 11 2026-05-26
CSN8302 China Southern Airlines 9 2026-05-26
CSN5096 China Southern Airlines 6 2026-05-21
CSN373 China Southern Airlines 6 2026-05-20
CSN5095 China Southern Airlines 4 2026-05-21
CSN8020 China Southern Airlines 3 2026-05-08
CSN8019 China Southern Airlines 3 2026-05-08
CSN367 China Southern Airlines 3 2026-05-21
CSN6910 China Southern Airlines 2 2026-05-29
CSN6903 China Southern Airlines 2 2026-05-29
CSN8348 China Southern Airlines 1 2026-05-24
CSN8347 China Southern Airlines 1 2026-05-24
CSN6013 China Southern Airlines 1 2026-05-07
CSN5036 China Southern Airlines 1 2026-04-18
CSN5035 China Southern Airlines 1 2026-04-18
CSN374 China Southern Airlines 1 2026-04-20
CSN3696 China Southern Airlines 1 2026-04-23
CSN368 China Southern Airlines 1 2026-04-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSN6910 PKX → URC May 29, 12:00 UTCMay 29, 12:15 UTC15m
2026-05-29 CSN6903 URC → PKX May 29, 09:30 UTCMay 29, 09:40 UTC10m
2026-05-27 CSN6910 PKX → URC May 27, 12:55 UTCMay 27, 13:05 UTC10m
2026-05-27 CSN6903 URC → PKX May 27, 10:30 UTCMay 27, 10:40 UTC10m
2026-05-26 CSN8302 KUL → CAN May 26, 10:05 UTCMay 26, 10:14 UTC10m
2026-05-26 CSN8301 CAN → KUL May 26, 07:49 UTCMay 26, 08:19 UTC30m
2026-05-24 CSN8348 KUL → CAN May 24, 09:50 UTCMay 24, 10:05 UTC15m
2026-05-24 CSN8347 CAN → KUL May 24, 07:00 UTCMay 24, 07:35 UTC35m
2026-05-22 CSN8302 KUL → CAN May 22, 10:10 UTCMay 22, 10:20 UTC10m
2026-05-22 CSN8301 CAN → KUL May 22, 08:10 UTCMay 22, 09:00 UTC50m
2026-05-22 CSN8301 CAN → KUL May 22, 05:20 UTCMay 22, 05:30 UTC10m
2026-05-21 CSN367 CAN → SGN May 21, 13:05 UTCMay 21, 13:15 UTC10m
2026-05-21 CSN5096 BKK → CAN May 21, 10:25 UTCMay 21, 10:35 UTC10m
2026-05-21 CSN5096 BKK → CAN May 21, 08:20 UTCMay 21, 08:45 UTC25m
2026-05-21 CSN5095 CAN → BKK May 21, 06:00 UTCMay 21, 06:30 UTC30m
2026-05-20 CSN373 CAN → SGN May 20, 05:05 UTCMay 20, 05:15 UTC10m
2026-05-17 CSN8302 KUL → CAN May 17, 10:25 UTCMay 17, 10:40 UTC15m
2026-05-17 CSN8301 CAN → KUL May 17, 08:35 UTCMay 17, 09:00 UTC25m
2026-05-16 CSN5096 BKK → CAN May 16, 08:16 UTCMay 16, 09:01 UTC45m
2026-05-16 CSN5095 CAN → BKK May 16, 05:35 UTCMay 16, 06:16 UTC41m
2026-05-15 CSN373 CAN → SGN May 15, 05:35 UTCMay 15, 05:55 UTC20m
2026-05-14 CSN8302 KUL → CAN May 14, 11:10 UTCMay 14, 11:20 UTC10m
2026-05-14 CSN8301 CAN → KUL May 14, 09:25 UTCMay 14, 09:50 UTC25m
2026-05-12 CSN367 CAN → SGN May 12, 12:40 UTCMay 12, 12:50 UTC10m
2026-05-12 CSN5096 BKK → CAN May 12, 08:30 UTCMay 12, 09:15 UTC45m
2026-05-12 CSN5095 CAN → BKK May 12, 05:55 UTCMay 12, 06:35 UTC40m
2026-05-08 CSN8020 BKK → CAN May 8, 13:25 UTCMay 8, 14:05 UTC40m
2026-05-08 CSN8019 CAN → BKK May 8, 09:19 UTCMay 8, 12:04 UTC2h 45m
2026-05-07 CSN6013 URC → NQZ May 7, 16:50 UTCMay 7, 21:35 UTC4h 45m
2026-05-06 CSN373 CAN → SGN May 6, 05:20 UTCMay 6, 05:30 UTC10m
2026-05-05 CSN367 CAN → SGN May 5, 13:00 UTCMay 5, 13:10 UTC10m
2026-05-05 CSN5096 BKK → CAN May 5, 08:10 UTCMay 5, 08:35 UTC25m
2026-05-04 CSN8020 BKK → CAN May 4, 13:30 UTCMay 5, 06:30 UTC17h 1m
2026-05-04 CSN8019 CAN → BKK May 4, 09:20 UTCMay 4, 11:55 UTC2h 35m
2026-05-03 CSN373 CAN → SGN May 3, 08:00 UTCMay 3, 08:10 UTC10m
2026-05-01 CSN8302 KUL → CAN May 1, 11:00 UTCMay 1, 11:15 UTC15m
2026-05-01 CSN8301 CAN → KUL May 1, 05:25 UTCMay 1, 08:40 UTC3h 15m
2026-04-29 CSN8020 BKK → CAN Apr 29, 13:30 UTCApr 29, 14:00 UTC30m
2026-04-29 CSN8019 CAN → BKK Apr 29, 09:35 UTCApr 29, 12:00 UTC2h 25m
2026-04-26 CSN8302 KUL → CAN Apr 26, 10:05 UTCApr 26, 10:20 UTC15m
2026-04-26 CSN8301 CAN → KUL Apr 26, 05:05 UTCApr 26, 08:50 UTC3h 45m
2026-04-25 CSN373 CAN → SGN Apr 25, 05:20 UTCApr 25, 05:30 UTC10m
2026-04-23 CSN3696 TYN → CAN Apr 23, 16:40 UTCApr 23, 16:50 UTC10m
2026-04-20 CSN374 SGN → CAN Apr 20, 09:10 UTCApr 20, 09:20 UTC10m
2026-04-20 CSN368 SGN → WUH Apr 20, 01:10 UTCApr 20, 01:20 UTC10m
2026-04-19 CSN5096 BKK → CAN Apr 19, 08:30 UTCApr 19, 09:20 UTC50m
2026-04-18 CSN5095 CAN → BKK Apr 18, 18:50 UTCApr 19, 06:30 UTC11h 40m
2026-04-18 CSN5036 LAX → CAN Apr 18, 17:45 UTCApr 18, 18:00 UTC15m
2026-04-18 CSN5035 CAN → LAX Apr 18, 12:35 UTCApr 18, 16:05 UTC3h 30m
2026-04-16 CSN8302 KUL → CAN Apr 16, 11:29 UTCApr 16, 11:44 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-20CU page for operator, model, and routing details .

Mode-S 781742 frequently asked

What is Mode-S code 781742?
781742 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-20CU.
Where is Mode-S 781742 registered?
Mode-S code 781742 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781742 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781742, octal 36013502, decimal 7,870,274.
What flights does 781742 operate?
Mode-S 781742 has broadcast 18 distinct callsigns, including CSN8301, CSN8302, CSN5096, CSN373, CSN5095.