Apparatus

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sensors Mode-S transponder

7820BF

ICAO 24-bit transponder address · allocated to China

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

Hex
7820BF
Octal
36020277
Decimal
7,872,703
Country
CN
Tail
B-32GP
Type
A21N
No current signal · last broadcast Jul 26, 14:50 UTC
Flights observed
358
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:50 UTC

Last known position

Most recent position reported by Mode-S 7820BF.

Country allocation

The ICAO 24-bit address 7820BF 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
CSN8048 - 17 2026-07-06
CSN8047 - 15 2026-07-06
CSN6385 China Southern Airlines 12 2026-07-25
CSN6386 China Southern Airlines 10 2026-07-25
CSN5032 - 10 2026-07-17
CSN5031 - 10 2026-07-17
CSN5079 China Southern Airlines 6 2026-06-02
CSN3633 China Southern Airlines 6 2026-07-24
CSN3552 China Southern Airlines 6 2026-07-26
CSN6592 - 5 2026-07-16
CSN5845 - 5 2026-07-19
CSN3634 China Southern Airlines 5 2026-07-24
CSN3613 China Southern Airlines 5 2026-07-22
CSN3455 - 5 2026-07-01
CSN3213 - 5 2026-07-13
CSN6591 - 4 2026-07-16
CSN5846 - 4 2026-07-20
CSN5387 China Southern Airlines 4 2026-06-13
CSN5080 China Southern Airlines 4 2026-06-02
CSN3649 - 4 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSN8587 - Jul 26, 14:40 UTCJul 26, 14:50 UTC10m
2026-07-26 CSN3552 SHA → SZX Jul 26, 12:50 UTCJul 26, 13:10 UTC20m
2026-07-26 CSN3552 SHA → SZX Jul 26, 11:25 UTCJul 26, 12:00 UTC35m
2026-07-25 CSN3552 SHA → SZX Jul 25, 14:40 UTCJul 26, 12:00 UTC21h 21m
2026-07-25 CSN3589 SZX → SHA Jul 25, 13:30 UTCJul 25, 13:40 UTC10m
2026-07-25 CSN6386 SHE → SZX Jul 25, 10:40 UTCJul 25, 11:05 UTC25m
2026-07-25 CSN6385 SZX → SHE Jul 25, 03:25 UTCJul 25, 07:30 UTC4h 5m
2026-07-25 CSN6385 SZX → SHE Jul 25, 01:35 UTCJul 25, 01:50 UTC15m
2026-07-24 CSN3634 HRB → SZX Jul 24, 14:20 UTCJul 24, 14:45 UTC25m
2026-07-24 CSN3634 HRB → SZX Jul 24, 07:00 UTCJul 24, 12:35 UTC5h 35m
2026-07-24 CSN3633 SZX → HRB Jul 24, 05:05 UTCJul 24, 05:20 UTC15m
2026-07-23 CSN3577 SZX → NKG Jul 23, 14:25 UTCJul 23, 14:35 UTC10m
2026-07-23 CSN5400 NKG → SZX Jul 23, 12:45 UTCJul 23, 13:05 UTC20m
2026-07-23 CSN5399 SZX → NKG Jul 23, 05:50 UTCJul 23, 06:00 UTC10m
2026-07-23 CSN6850 HGH → SZX Jul 23, 03:10 UTCJul 23, 04:15 UTC1h 5m
2026-07-22 CSN6849 SZX → HGH Jul 22, 23:25 UTCJul 22, 23:35 UTC10m
2026-07-22 CSN6548 - Jul 22, 17:10 UTCJul 22, 17:50 UTC40m
2026-07-22 CSN6547 SZX → HGH Jul 22, 13:10 UTCJul 22, 13:20 UTC10m
2026-07-22 CSN3613 SZX → CGQ Jul 22, 03:05 UTCJul 22, 03:15 UTC10m
2026-07-22 CSN3613 SZX → CGQ Jul 22, 00:40 UTCJul 22, 00:50 UTC10m
2026-07-21 CSN3174 PKX → SZX Jul 21, 15:25 UTCJul 21, 16:00 UTC35m
2026-07-21 CSN3174 PKX → SZX Jul 21, 13:00 UTCJul 21, 13:15 UTC15m
2026-07-21 CSN3153 SZX → PEK Jul 21, 06:45 UTCJul 21, 07:00 UTC15m
2026-07-20 CSN5861 SZX → CTU Jul 20, 23:25 UTCJul 20, 23:35 UTC10m
2026-07-20 CSN3634 HRB → SZX Jul 20, 15:25 UTCJul 20, 15:40 UTC15m
2026-07-20 CSN3634 HRB → SZX Jul 20, 06:50 UTCJul 20, 13:05 UTC6h 15m
2026-07-20 CSN3633 SZX → HRB Jul 20, 04:20 UTCJul 20, 04:30 UTC10m
2026-07-20 CSN5846 - Jul 20, 02:20 UTCJul 20, 02:40 UTC20m
2026-07-19 CSN5845 - Jul 19, 12:50 UTCJul 19, 13:05 UTC15m
2026-07-19 CSN8598 - Jul 19, 09:55 UTCJul 19, 10:35 UTC40m
2026-07-19 CSN8597 - Jul 19, 05:15 UTCJul 19, 05:25 UTC10m
2026-07-19 CSN6254 - Jul 19, 03:10 UTCJul 19, 03:20 UTC10m
2026-07-19 CSN6253 - Jul 19, 00:00 UTCJul 19, 00:20 UTC20m
2026-07-18 CSN3634 - Jul 18, 14:30 UTCJul 18, 14:40 UTC10m
2026-07-18 CSN3633 SZX → HRB Jul 18, 07:10 UTCJul 18, 12:00 UTC4h 50m
2026-07-18 CSN3633 SZX → HRB Jul 18, 04:50 UTCJul 18, 05:05 UTC15m
2026-07-18 CSN3578 - Jul 18, 03:05 UTCJul 18, 03:20 UTC15m
2026-07-17 CSN3577 - Jul 17, 14:10 UTCJul 17, 14:20 UTC10m
2026-07-17 CSN5032 - Jul 17, 11:45 UTCJul 17, 12:00 UTC15m
2026-07-17 CSN5032 - Jul 17, 08:20 UTCJul 17, 08:35 UTC15m
2026-07-17 CSN5031 - Jul 17, 06:29 UTCJul 17, 07:00 UTC30m
2026-07-17 CSN5031 - Jul 17, 03:34 UTCJul 17, 03:45 UTC10m
2026-07-17 CSN8588 - Jul 17, 00:55 UTCJul 17, 01:05 UTC10m
2026-07-16 CSN8587 - Jul 16, 16:30 UTCJul 16, 16:40 UTC10m
2026-07-16 CSN3626 - Jul 16, 13:10 UTCJul 16, 13:54 UTC45m
2026-07-16 CSN3625 - Jul 16, 06:25 UTCJul 16, 06:35 UTC10m
2026-07-16 CSN6592 - Jul 16, 04:20 UTCJul 16, 05:05 UTC45m
2026-07-16 CSN6591 - Jul 16, 00:05 UTCJul 16, 00:15 UTC10m
2026-07-15 CSN8491 - Jul 15, 07:45 UTCJul 15, 07:55 UTC10m
2026-07-14 CSN3173 - Jul 14, 11:00 UTCJul 14, 11:15 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-32GP page for operator, model, and routing details .

Mode-S 7820BF frequently asked

What is Mode-S code 7820BF?
7820BF is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32GP.
Where is Mode-S 7820BF registered?
Mode-S code 7820BF is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7820BF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7820BF, octal 36020277, decimal 7,872,703.
What flights does 7820BF operate?
Mode-S 7820BF has broadcast 20 distinct callsigns, including CSN8048, CSN8047, CSN6385, CSN6386, CSN5032.