Apparatus

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sensors Mode-S transponder

78125F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8997 · AIRBUS A-321

Hex
78125F
Octal
36011137
Decimal
7,869,023
Country
CN
Tail
B-8997
Type
A321
No current signal · last broadcast Jul 26, 19:15 UTC
Flights observed
135
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 19:15 UTC

Last known position

Most recent position reported by Mode-S 78125F.

Country allocation

The ICAO 24-bit address 78125F 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
CSN6346 China Southern Airlines 13 2026-07-25
CSN6274 China Southern Airlines 8 2026-07-24
CSN6273 China Southern Airlines 8 2026-07-24
CSN3616 China Southern Airlines 7 2026-05-09
CSN6218 China Southern Airlines 5 2026-07-26
CSN5983 - 5 2026-07-09
CSN5300 - 5 2026-07-09
CSN3906 China Southern Airlines 5 2026-06-07
CSN6248 China Southern Airlines 4 2026-05-01
CSN6204 China Southern Airlines 4 2026-07-22
CSN5299 - 4 2026-07-09
CSN3744 China Southern Airlines 4 2026-05-31
CSN6256 - 3 2026-06-12
CSN6220 - 3 2026-07-16
CSN6202 China Southern Airlines 3 2026-07-26
CSN6141 - 3 2026-06-23
CSN5101 China Southern Airlines 3 2026-05-29
CSN3743 China Southern Airlines 3 2026-05-23
CSN6217 China Southern Airlines 2 2026-07-26
CSN5984 - 2 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN6202 PKX → HRB Jul 26, 19:05 UTCJul 26, 19:15 UTC10m
2026-07-26 CSN6218 PKX → HRB Jul 26, 08:10 UTCJul 26, 08:20 UTC10m
2026-07-26 CSN6217 HRB → PKX Jul 26, 05:25 UTCJul 26, 05:40 UTC15m
2026-07-25 CSN6346 CKG → HRB Jul 25, 11:35 UTCJul 25, 11:50 UTC15m
2026-07-24 CSN6274 SZX → HRB Jul 24, 08:45 UTCJul 24, 09:25 UTC40m
2026-07-24 CSN6274 SZX → HRB Jul 24, 06:50 UTCJul 24, 07:10 UTC20m
2026-07-24 CSN6273 HRB → SZX Jul 24, 04:50 UTCJul 24, 05:00 UTC10m
2026-07-23 CSN6273 HRB → SZX Jul 23, 14:50 UTCJul 24, 02:25 UTC11h 35m
2026-07-23 CSN6203 - Jul 23, 12:35 UTCJul 23, 12:45 UTC10m
2026-07-23 CSN6218 PKX → HRB Jul 23, 08:15 UTCJul 23, 08:25 UTC10m
2026-07-22 CSN6346 - Jul 22, 11:30 UTCJul 22, 11:50 UTC20m
2026-07-22 CSN6204 PKX → HRB Jul 22, 00:55 UTCJul 22, 01:05 UTC10m
2026-07-21 CSN5967 - Jul 21, 13:30 UTCJul 21, 13:40 UTC10m
2026-07-21 CSN6274 - Jul 21, 09:10 UTCJul 21, 09:25 UTC15m
2026-07-21 CSN6274 - Jul 21, 06:50 UTCJul 21, 07:00 UTC10m
2026-07-21 CSN6273 HRB → SZX Jul 21, 04:55 UTCJul 21, 05:10 UTC15m
2026-07-21 CSN6273 HRB → SZX Jul 21, 02:10 UTCJul 21, 02:25 UTC15m
2026-07-19 CSN6346 - Jul 19, 11:20 UTCJul 19, 11:35 UTC15m
2026-07-18 CSN6346 - Jul 18, 11:15 UTCJul 18, 11:25 UTC10m
2026-07-18 CSN6204 - Jul 18, 00:55 UTCJul 18, 01:05 UTC10m
2026-07-16 CSN6220 - Jul 16, 04:20 UTCJul 16, 04:30 UTC10m
2026-07-15 CSN6346 - Jul 15, 11:20 UTCJul 15, 11:40 UTC20m
2026-07-15 CSN6204 - Jul 15, 01:00 UTCJul 15, 01:10 UTC10m
2026-07-14 CSN6274 - Jul 14, 09:10 UTCJul 14, 09:25 UTC15m
2026-07-14 CSN6274 - Jul 14, 06:45 UTCJul 14, 07:00 UTC15m
2026-07-13 CSN6273 - Jul 13, 10:50 UTCJul 14, 02:30 UTC15h 40m
2026-07-13 CSN6273 - Jul 13, 06:35 UTCJul 14, 02:30 UTC19h 55m
2026-07-13 CSN6260 - Jul 13, 02:20 UTCJul 13, 10:50 UTC8h 30m
2026-07-12 CSN6202 - Jul 12, 14:50 UTCJul 13, 10:50 UTC20h 0m
2026-07-12 CSN6218 - Jul 12, 08:15 UTCJul 12, 08:30 UTC15m
2026-07-11 CSN5984 - Jul 11, 14:35 UTCJul 11, 14:55 UTC20m
2026-07-10 CSN6220 - Jul 10, 04:25 UTCJul 10, 04:35 UTC10m
2026-07-10 CSN6219 - Jul 10, 02:00 UTCJul 10, 02:10 UTC10m
2026-07-09 CSN5299 - Jul 9, 13:25 UTCJul 9, 13:40 UTC15m
2026-07-09 CSN5300 - Jul 9, 06:10 UTCJul 9, 06:20 UTC10m
2026-07-09 CSN5983 - Jul 9, 01:55 UTCJul 9, 02:10 UTC15m
2026-07-07 CSN5983 - Jul 7, 01:50 UTCJul 7, 06:20 UTC4h 30m
2026-07-06 CSN6274 - Jul 6, 09:30 UTCJul 6, 09:45 UTC15m
2026-07-06 CSN6274 - Jul 6, 07:15 UTCJul 6, 07:25 UTC10m
2026-07-06 CSN6273 - Jul 6, 05:20 UTCJul 6, 05:35 UTC15m
2026-07-06 CSN6273 - Jul 6, 02:40 UTCJul 6, 02:50 UTC10m
2026-07-05 CSN5300 - Jul 5, 06:00 UTCJul 6, 02:50 UTC20h 50m
2026-07-05 CSN5983 - Jul 5, 01:55 UTCJul 5, 06:10 UTC4h 15m
2026-07-01 CSN6346 - Jul 1, 16:50 UTCJul 2, 11:35 UTC18h 45m
2026-07-01 CSN6218 - Jul 1, 08:45 UTCJul 1, 09:00 UTC15m
2026-07-01 CSN6217 - Jul 1, 06:50 UTCJul 1, 07:00 UTC10m
2026-06-29 CSN6346 - Jun 29, 11:39 UTCJun 29, 11:55 UTC15m
2026-06-28 CSN6346 - Jun 28, 11:50 UTCJun 29, 11:45 UTC23h 55m
2026-06-28 CSN6346 - Jun 28, 11:35 UTCJun 28, 11:55 UTC20m
2026-06-26 CSN6346 - Jun 26, 11:14 UTCJun 26, 11:34 UTC20m

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-8997 page for operator, model, and routing details .

Mode-S 78125F frequently asked

What is Mode-S code 78125F?
78125F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8997.
Where is Mode-S 78125F registered?
Mode-S code 78125F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78125F broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78125F, octal 36011137, decimal 7,869,023.
What flights does 78125F operate?
Mode-S 78125F has broadcast 20 distinct callsigns, including CSN6346, CSN6274, CSN6273, CSN3616, CSN6218.