Apparatus

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sensors Mode-S transponder

781622

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-306L · AIRBUS A-321neo

Hex
781622
Octal
36013042
Decimal
7,869,986
Country
CN
Tail
B-306L
Type
A21N
No current signal · last broadcast Jul 26, 14:45 UTC
Flights observed
178
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:45 UTC

Last known position

Most recent position reported by Mode-S 781622.

Country allocation

The ICAO 24-bit address 781622 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
CSN352 - 15 2026-06-16
CSN3040 - 14 2026-07-16
CSN3062 - 11 2026-07-18
CSN3061 China Southern Airlines 11 2026-07-18
CSN351 - 10 2026-06-15
CSN3039 - 9 2026-07-16
CSN5016 China Southern Airlines 7 2026-07-26
CSN363 China Southern Airlines 7 2026-07-24
CSN357 China Southern Airlines 7 2026-07-21
CSN354 China Southern Airlines 7 2026-04-22
CSN8484 - 6 2026-07-14
CSN5015 China Southern Airlines 6 2026-07-26
CSN364 China Southern Airlines 6 2026-07-24
CSN3044 China Southern Airlines 6 2026-07-23
CSN8100 - 5 2026-06-24
CSN8099 - 5 2026-06-24
CSN358 China Southern Airlines 5 2026-07-21
CSN340 China Southern Airlines 5 2026-07-22
CSN8483 - 4 2026-07-14
CSN353 China Southern Airlines 4 2026-04-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN5016 DAC → CAN Jul 26, 07:25 UTCJul 26, 14:45 UTC7h 20m
2026-07-26 CSN5015 CAN → DAC Jul 26, 02:45 UTCJul 26, 05:25 UTC2h 40m
2026-07-24 CSN364 BKK → CAN Jul 24, 12:20 UTCJul 24, 12:45 UTC25m
2026-07-24 CSN363 CAN → BKK Jul 24, 10:10 UTCJul 24, 10:40 UTC30m
2026-07-23 CSN3044 SIN → CAN Jul 23, 14:30 UTCJul 23, 15:05 UTC35m
2026-07-23 CSN3044 SIN → CAN Jul 23, 11:15 UTCJul 23, 11:40 UTC25m
2026-07-23 CSN3043 CAN → SIN Jul 23, 06:25 UTCJul 23, 09:45 UTC3h 20m
2026-07-22 CSN3497 CAN → KMG Jul 22, 23:35 UTCJul 23, 00:10 UTC35m
2026-07-22 CSN3044 - Jul 22, 14:30 UTCJul 22, 14:45 UTC15m
2026-07-22 CSN3044 - Jul 22, 11:25 UTCJul 22, 11:45 UTC20m
2026-07-22 CSN340 ICN → CAN Jul 22, 01:05 UTCJul 22, 01:45 UTC40m
2026-07-21 CSN339 CAN → ICN Jul 21, 12:00 UTCJul 21, 12:45 UTC45m
2026-07-21 CSN358 BKK → CAN Jul 21, 04:40 UTCJul 21, 06:10 UTC1h 30m
2026-07-21 CSN357 CAN → BKK Jul 21, 01:00 UTCJul 21, 03:20 UTC2h 20m
2026-07-20 CSN3044 - Jul 20, 16:15 UTCJul 20, 16:50 UTC35m
2026-07-20 CSN3044 - Jul 20, 13:15 UTCJul 20, 13:35 UTC20m
2026-07-20 CSN3043 - Jul 20, 11:25 UTCJul 20, 11:45 UTC20m
2026-07-20 CSN340 ICN → CAN Jul 20, 01:20 UTCJul 20, 02:10 UTC50m
2026-07-19 CSN339 CAN → ICN Jul 19, 11:55 UTCJul 19, 12:25 UTC30m
2026-07-19 CSN358 BKK → CAN Jul 19, 04:20 UTCJul 19, 04:35 UTC15m
2026-07-19 CSN357 CAN → BKK Jul 19, 02:40 UTCJul 19, 02:55 UTC15m
2026-07-18 CSN3062 - Jul 18, 07:45 UTCJul 18, 08:30 UTC45m
2026-07-18 CSN3061 CAN → ICN Jul 18, 05:25 UTCJul 18, 06:05 UTC40m
2026-07-17 CSN5016 - Jul 17, 07:44 UTCJul 17, 08:54 UTC1h 10m
2026-07-17 CSN5015 - Jul 17, 04:10 UTCJul 17, 05:35 UTC1h 25m
2026-07-16 CSN3040 - Jul 16, 13:30 UTCJul 16, 13:45 UTC15m
2026-07-16 CSN3040 - Jul 16, 10:20 UTCJul 16, 10:45 UTC25m
2026-07-16 CSN3039 - Jul 16, 08:30 UTCJul 16, 09:05 UTC35m
2026-07-15 CSN5016 - Jul 15, 08:35 UTCJul 16, 08:30 UTC23h 55m
2026-07-15 CSN5016 - Jul 15, 07:30 UTCJul 15, 08:40 UTC1h 10m
2026-07-15 CSN5015 - Jul 15, 04:10 UTCJul 15, 05:25 UTC1h 15m
2026-07-14 CSN8484 - Jul 14, 20:35 UTCJul 14, 20:50 UTC15m
2026-07-14 CSN8484 - Jul 14, 18:20 UTCJul 14, 18:50 UTC30m
2026-07-14 CSN8483 - Jul 14, 17:00 UTCJul 14, 17:20 UTC20m
2026-07-14 CSN8483 - Jul 14, 14:40 UTCJul 14, 15:15 UTC35m
2026-07-14 CSN3062 - Jul 14, 07:55 UTCJul 14, 08:40 UTC45m
2026-07-14 CSN3061 - Jul 14, 05:30 UTCJul 14, 06:15 UTC45m
2026-07-13 CSN362 - Jul 13, 01:30 UTCJul 13, 01:45 UTC15m
2026-07-12 CSN361 - Jul 12, 14:30 UTCJul 12, 14:45 UTC15m
2026-07-12 CSN3062 - Jul 12, 07:50 UTCJul 12, 08:20 UTC30m
2026-07-12 CSN3061 - Jul 12, 05:15 UTCJul 12, 06:01 UTC45m
2026-07-11 CSN3062 - Jul 11, 07:45 UTCJul 11, 08:20 UTC35m
2026-07-11 CSN3061 - Jul 11, 05:40 UTCJul 11, 06:20 UTC40m
2026-07-11 CSN3672 - Jul 11, 01:15 UTCJul 11, 01:25 UTC10m
2026-07-10 CSN362 - Jul 10, 01:40 UTCJul 10, 06:10 UTC4h 30m
2026-07-09 CSN361 - Jul 9, 16:40 UTCJul 9, 17:05 UTC25m
2026-07-08 CSN8988 - Jul 8, 07:35 UTCJul 9, 01:20 UTC17h 45m
2026-07-08 CSN8988 - Jul 8, 03:15 UTCJul 9, 01:20 UTC22h 5m
2026-07-07 CSN364 - Jul 7, 12:35 UTCJul 8, 07:55 UTC19h 20m
2026-07-07 CSN364 - Jul 7, 12:10 UTCJul 8, 07:55 UTC19h 45m

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-306L page for operator, model, and routing details .

Mode-S 781622 frequently asked

What is Mode-S code 781622?
781622 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-306L.
Where is Mode-S 781622 registered?
Mode-S code 781622 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781622 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781622, octal 36013042, decimal 7,869,986.
What flights does 781622 operate?
Mode-S 781622 has broadcast 20 distinct callsigns, including CSN352, CSN3040, CSN3062, CSN3061, CSN351.