Apparatus

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sensors Mode-S transponder

7823BA

ICAO 24-bit transponder address · allocated to China

Hex
7823BA
Octal
36021672
Decimal
7,873,466
Country
CN
No current signal · last broadcast 16d ago
Flights observed
219
Distinct callsigns
20
Country
CN
Last broadcast
16d ago

Last known position

Most recent position reported by Mode-S 7823BA.

Country allocation

The ICAO 24-bit address 7823BA 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
CSZ9506 Shenzhen Airlines 30 2026-07-25
CSZ9505 Shenzhen Airlines 27 2026-07-23
CSZ9209 Shenzhen Airlines 26 2026-07-26
CSZ230 - 11 2026-07-14
CSZ229 - 11 2026-07-14
CSZ9210 - 8 2026-07-02
CSZ9809 Shenzhen Airlines 7 2026-06-03
CSZ9810 Shenzhen Airlines 6 2026-06-03
CSZ9512 Shenzhen Airlines 6 2026-05-25
CSZ9859 Shenzhen Airlines 5 2026-07-24
CSZ9854 Shenzhen Airlines 5 2026-07-25
CSZ9511 Shenzhen Airlines 5 2026-05-24
CSZ9947 Shenzhen Airlines 4 2026-07-19
CSZ9943 - 4 2026-06-19
CSZ9884 Shenzhen Airlines 4 2026-06-04
CSZ9883 Shenzhen Airlines 4 2026-06-04
CSZ9948 Shenzhen Airlines 3 2026-07-22
CSZ9930 - 3 2026-07-20
CSZ9929 Shenzhen Airlines 3 2026-07-22
CSZ9890 - 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ9209 SZX → XIY Jul 26, 13:05 UTCJul 26, 13:20 UTC15m
2026-07-25 CSZ9506 PVG → SZX Jul 25, 10:15 UTCJul 25, 11:15 UTC1h 0m
2026-07-25 CSZ9854 NKG → SZX Jul 25, 03:35 UTCJul 25, 04:10 UTC35m
2026-07-24 CSZ9859 SZX → HGH Jul 24, 22:55 UTCJul 24, 23:05 UTC10m
2026-07-24 CSZ9950 CGO → SZX Jul 24, 16:40 UTCJul 24, 17:00 UTC20m
2026-07-24 CSZ9949 SZX → CGO Jul 24, 12:15 UTCJul 24, 12:30 UTC15m
2026-07-24 CSZ9201 SZX → XIY Jul 24, 04:55 UTCJul 24, 05:05 UTC10m
2026-07-23 CSZ9209 - Jul 23, 13:00 UTCJul 23, 13:15 UTC15m
2026-07-23 CSZ9506 PVG → SZX Jul 23, 10:15 UTCJul 23, 10:50 UTC35m
2026-07-23 CSZ9505 SZX → PVG Jul 23, 05:35 UTCJul 23, 05:45 UTC10m
2026-07-23 CSZ9854 NKG → SZX Jul 23, 03:10 UTCJul 23, 04:10 UTC1h 0m
2026-07-22 CSZ9859 SZX → HGH Jul 22, 23:15 UTCJul 22, 23:25 UTC10m
2026-07-22 CSZ9948 WUH → SZX Jul 22, 15:35 UTCJul 22, 16:05 UTC30m
2026-07-22 CSZ9929 SZX → TAO Jul 22, 01:30 UTCJul 22, 01:45 UTC15m
2026-07-21 CSZ9203 SZX → XIY Jul 21, 03:30 UTCJul 21, 03:40 UTC10m
2026-07-20 CSZ9468 CKG → SZX Jul 20, 16:15 UTCJul 20, 16:35 UTC20m
2026-07-20 CSZ9467 - Jul 20, 11:20 UTCJul 20, 11:35 UTC15m
2026-07-20 CSZ9930 - Jul 20, 08:20 UTCJul 20, 08:30 UTC10m
2026-07-20 CSZ9929 SZX → TAO Jul 20, 01:10 UTCJul 20, 01:25 UTC15m
2026-07-19 CSZ9948 - Jul 19, 14:50 UTCJul 19, 15:10 UTC20m
2026-07-19 CSZ9947 SZX → WUH Jul 19, 10:25 UTCJul 19, 10:35 UTC10m
2026-07-19 CSZ9930 - Jul 19, 08:45 UTCJul 19, 08:55 UTC10m
2026-07-18 CSZ9850 NKG → SZX Jul 18, 14:30 UTCJul 18, 15:15 UTC45m
2026-07-18 CSZ9849 SZX → NKG Jul 18, 10:10 UTCJul 18, 10:20 UTC10m
2026-07-18 CSZ9844 - Jul 18, 07:40 UTCJul 18, 07:50 UTC10m
2026-07-15 CSZ9843 - Jul 15, 02:45 UTCJul 15, 02:55 UTC10m
2026-07-14 CSZ230 - Jul 14, 14:35 UTCJul 14, 14:55 UTC20m
2026-07-14 CSZ230 - Jul 14, 11:20 UTCJul 14, 11:45 UTC25m
2026-07-14 CSZ229 - Jul 14, 06:05 UTCJul 14, 10:00 UTC3h 55m
2026-07-14 CSZ9854 - Jul 14, 03:40 UTCJul 14, 04:20 UTC40m
2026-07-13 CSZ9947 - Jul 13, 09:05 UTCJul 13, 09:20 UTC15m
2026-07-13 CSZ9930 - Jul 13, 07:10 UTCJul 13, 07:30 UTC20m
2026-07-13 CSZ9929 - Jul 13, 01:10 UTCJul 13, 01:20 UTC10m
2026-07-12 CSZ230 - Jul 12, 10:20 UTCJul 12, 10:50 UTC30m
2026-07-12 CSZ229 - Jul 12, 08:05 UTCJul 12, 08:30 UTC25m
2026-07-12 CSZ229 - Jul 12, 05:05 UTCJul 12, 05:15 UTC10m
2026-07-11 CSZ230 - Jul 11, 14:05 UTCJul 11, 14:25 UTC20m
2026-07-11 CSZ230 - Jul 11, 10:45 UTCJul 11, 11:10 UTC25m
2026-07-11 CSZ229 - Jul 11, 08:55 UTCJul 11, 09:20 UTC25m
2026-07-11 CSZ229 - Jul 11, 06:01 UTCJul 11, 06:10 UTC10m
2026-07-10 CSZ9859 - Jul 10, 22:50 UTCJul 10, 23:05 UTC15m
2026-07-10 CSZ230 - Jul 10, 15:25 UTCJul 10, 15:45 UTC20m
2026-07-10 CSZ230 - Jul 10, 12:00 UTCJul 10, 12:25 UTC25m
2026-07-10 CSZ229 - Jul 10, 09:55 UTCJul 10, 10:40 UTC45m
2026-07-10 CSZ229 - Jul 10, 06:55 UTCJul 10, 07:10 UTC15m
2026-07-10 CSZ9854 - Jul 10, 03:20 UTCJul 10, 04:00 UTC40m
2026-07-09 CSZ9859 - Jul 9, 23:00 UTCJul 9, 23:10 UTC10m
2026-07-09 CSZ230 - Jul 9, 15:25 UTCJul 9, 15:35 UTC10m
2026-07-09 CSZ230 - Jul 9, 11:50 UTCJul 9, 12:15 UTC25m
2026-07-09 CSZ229 - Jul 9, 09:30 UTCJul 9, 10:20 UTC50m

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.

Mode-S 7823BA frequently asked

What is Mode-S code 7823BA?
7823BA is an ICAO 24-bit transponder address. Allocated to China.
Where is Mode-S 7823BA registered?
Mode-S code 7823BA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7823BA broadcasting right now?
No active broadcast right now. Last signal was 16d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7823BA, octal 36021672, decimal 7,873,466.
What flights does 7823BA operate?
Mode-S 7823BA has broadcast 20 distinct callsigns, including CSZ9506, CSZ9505, CSZ9209, CSZ230, CSZ229.