Apparatus

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sensors Mode-S transponder

78220B

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32L7 · AIRBUS A-321neo

Hex
78220B
Octal
36021013
Decimal
7,873,035
Country
CN
Tail
B-32L7
Type
A21N
No current signal · last broadcast Jul 26, 14:30 UTC
Flights observed
187
Distinct callsigns
11
Country
CN
Last broadcast
Jul 26, 14:30 UTC

Last known position

Most recent position reported by Mode-S 78220B.

Country allocation

The ICAO 24-bit address 78220B 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 11 distinct

Callsign Airline Flights Last seen
CSN369 China Southern Airlines 85 2026-07-24
CSN370 China Southern Airlines 40 2026-07-24
CSN8309 China Southern Airlines 25 2026-07-22
CSN8310 China Southern Airlines 22 2026-07-23
CSN6437 China Southern Airlines 4 2026-07-26
CSN6095 China Southern Airlines 4 2026-04-24
CSN6096 China Southern Airlines 2 2026-04-17
CSN6209 China Southern Airlines 1 2026-07-25
CSN6077 China Southern Airlines 1 2026-06-04
CSN5872 - 1 2026-07-19
CSN3585 China Southern Airlines 1 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6437 SYX → HGH Jul 26, 04:35 UTCJul 26, 14:30 UTC9h 56m
2026-07-25 CSN6209 HRB → PVG Jul 25, 12:55 UTCJul 26, 09:00 UTC20h 6m
2026-07-24 CSN370 ICN → PVG Jul 24, 12:50 UTCJul 25, 12:45 UTC23h 55m
2026-07-24 CSN370 ICN → PVG Jul 24, 12:40 UTCJul 24, 13:25 UTC45m
2026-07-24 CSN369 PVG → ICN Jul 24, 10:05 UTCJul 24, 10:55 UTC50m
2026-07-23 CSN8310 NRT → PVG Jul 23, 05:40 UTCJul 23, 07:15 UTC1h 35m
2026-07-22 CSN8309 PVG → NRT Jul 22, 13:00 UTCJul 23, 03:40 UTC14h 40m
2026-07-21 CSN8310 NRT → PVG Jul 21, 06:00 UTCJul 21, 14:40 UTC8h 40m
2026-07-20 CSN8309 PVG → NRT Jul 20, 11:10 UTCJul 21, 03:45 UTC16h 34m
2026-07-19 CSN5872 - Jul 19, 14:50 UTCJul 20, 11:50 UTC21h 0m
2026-07-19 CSN6437 - Jul 19, 14:30 UTCJul 20, 11:50 UTC21h 20m
2026-07-19 CSN6437 - Jul 19, 05:30 UTCJul 19, 15:15 UTC9h 45m
2026-07-18 CSN370 - Jul 18, 12:40 UTCJul 19, 06:10 UTC17h 30m
2026-07-17 CSN370 - Jul 17, 13:29 UTCJul 18, 11:30 UTC22h 1m
2026-07-17 CSN369 - Jul 17, 10:15 UTCJul 17, 10:55 UTC40m
2026-07-16 CSN8310 - Jul 16, 05:50 UTCJul 16, 07:25 UTC1h 35m
2026-07-15 CSN8309 - Jul 15, 10:55 UTCJul 16, 04:00 UTC17h 5m
2026-07-14 CSN370 - Jul 14, 13:20 UTCJul 14, 14:00 UTC40m
2026-07-14 CSN369 - Jul 14, 09:55 UTCJul 14, 10:40 UTC45m
2026-07-13 CSN369 - Jul 13, 12:50 UTCJul 14, 10:40 UTC21h 50m
2026-07-13 CSN369 ICN → ICN Jul 13, 12:40 UTCJul 14, 10:40 UTC22h 0m
2026-07-13 CSN369 - Jul 13, 09:55 UTCJul 13, 10:40 UTC45m
2026-07-12 CSN369 - Jul 12, 13:01 UTCJul 13, 10:40 UTC21h 40m
2026-07-11 CSN8310 - Jul 11, 05:50 UTCJul 11, 07:20 UTC1h 30m
2026-07-10 CSN8309 - Jul 10, 10:55 UTCJul 11, 03:50 UTC16h 56m
2026-07-09 CSN370 - Jul 9, 12:50 UTCJul 10, 11:30 UTC22h 40m
2026-07-09 CSN370 - Jul 9, 12:35 UTCJul 9, 13:15 UTC40m
2026-07-09 CSN369 - Jul 9, 10:00 UTCJul 9, 10:45 UTC45m
2026-07-08 CSN369 - Jul 8, 12:50 UTCJul 9, 10:45 UTC21h 55m
2026-07-08 CSN369 ICN → ICN Jul 8, 12:35 UTCJul 9, 10:45 UTC22h 10m
2026-07-08 CSN369 - Jul 8, 10:00 UTCJul 8, 10:50 UTC50m
2026-07-07 CSN369 - Jul 7, 12:50 UTCJul 8, 10:50 UTC22h 0m
2026-07-07 CSN370 - Jul 7, 12:40 UTCJul 8, 10:45 UTC22h 5m
2026-07-06 CSN369 - Jul 6, 12:50 UTCJul 7, 10:35 UTC21h 45m
2026-07-06 CSN370 ICN → ICN Jul 6, 12:40 UTCJul 7, 10:35 UTC21h 55m
2026-07-06 CSN369 - Jul 6, 10:00 UTCJul 6, 10:45 UTC45m
2026-07-05 CSN369 - Jul 5, 12:50 UTCJul 6, 10:45 UTC21h 55m
2026-07-05 CSN369 - Jul 5, 09:50 UTCJul 5, 10:30 UTC40m
2026-07-04 CSN8310 - Jul 4, 07:45 UTCJul 4, 09:30 UTC1h 45m
2026-07-03 CSN8309 - Jul 3, 12:40 UTCJul 4, 06:10 UTC17h 30m
2026-07-02 CSN370 - Jul 2, 12:50 UTCJul 3, 12:45 UTC23h 55m
2026-07-02 CSN370 - Jul 2, 12:35 UTCJul 2, 13:00 UTC25m
2026-07-01 CSN369 - Jul 1, 14:50 UTCJul 2, 10:30 UTC19h 40m
2026-07-01 CSN370 ICN → ICN Jul 1, 14:25 UTCJul 2, 10:30 UTC20h 5m
2026-07-01 CSN369 - Jul 1, 12:20 UTCJul 1, 12:55 UTC35m
2026-06-30 CSN8310 - Jun 30, 05:45 UTCJun 30, 07:30 UTC1h 45m
2026-06-29 CSN8309 ICN → NRT Jun 29, 12:34 UTCJun 30, 04:00 UTC15h 26m
2026-06-29 CSN369 - Jun 29, 09:54 UTCJun 29, 10:34 UTC40m
2026-06-28 CSN369 - Jun 28, 12:55 UTCJun 29, 10:34 UTC21h 40m
2026-06-28 CSN6437 - Jun 28, 03:45 UTCJun 28, 13:40 UTC9h 55m

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-32L7 page for operator, model, and routing details .

Mode-S 78220B frequently asked

What is Mode-S code 78220B?
78220B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32L7.
Where is Mode-S 78220B registered?
Mode-S code 78220B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78220B broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78220B, octal 36021013, decimal 7,873,035.
What flights does 78220B operate?
Mode-S 78220B has broadcast 11 distinct callsigns, including CSN369, CSN370, CSN8309, CSN8310, CSN6437.