Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 5h ago
Flights observed
133
Distinct callsigns
20
Country
CN
Last broadcast
5h 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 - 22 2026-06-27
CSZ9505 - 18 2026-06-27
CSZ9209 - 16 2026-06-27
CSZ9809 Shenzhen Airlines 7 2026-06-03
CSZ9810 Shenzhen Airlines 6 2026-06-03
CSZ9512 Shenzhen Airlines 6 2026-05-25
CSZ9511 Shenzhen Airlines 5 2026-05-24
CSZ9210 - 5 2026-06-22
CSZ9943 - 4 2026-06-19
CSZ9884 Shenzhen Airlines 4 2026-06-04
CSZ9883 Shenzhen Airlines 4 2026-06-04
CSZ9890 - 3 2026-06-19
CSZ9889 - 3 2026-06-19
CSZ9530 Shenzhen Airlines 3 2026-05-22
CSZ9513 Shenzhen Airlines 3 2026-06-06
CSZ9947 Shenzhen Airlines 2 2026-05-20
CSZ9944 - 2 2026-06-19
CSZ9529 Shenzhen Airlines 2 2026-05-22
CSZ9514 Shenzhen Airlines 2 2026-05-23
CSZ9401 Shenzhen Airlines 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-27 CSZ9209 - Jun 27, 12:50 UTCJun 27, 13:04 UTC15m
2026-06-27 CSZ9506 - Jun 27, 10:10 UTCJun 27, 11:20 UTC1h 10m
2026-06-27 CSZ9505 - Jun 27, 05:19 UTCJun 27, 05:35 UTC15m
2026-06-26 CSZ9209 - Jun 26, 15:20 UTCJun 26, 15:29 UTC10m
2026-06-25 CSZ9209 - Jun 25, 17:09 UTCJun 25, 17:25 UTC15m
2026-06-25 CSZ9506 - Jun 25, 11:15 UTCJun 25, 11:35 UTC20m
2026-06-25 CSZ9505 - Jun 25, 05:15 UTCJun 25, 05:29 UTC15m
2026-06-24 CSZ9209 - Jun 24, 12:44 UTCJun 24, 13:00 UTC15m
2026-06-24 CSZ9506 - Jun 24, 10:19 UTCJun 24, 10:39 UTC20m
2026-06-23 CSZ9209 - Jun 23, 12:49 UTCJun 23, 13:00 UTC10m
2026-06-23 CSZ9506 - Jun 23, 10:29 UTCJun 23, 10:49 UTC20m
2026-06-23 CSZ9505 - Jun 23, 05:00 UTCJun 23, 05:09 UTC10m
2026-06-22 CSZ9506 - Jun 22, 10:25 UTCJun 22, 11:19 UTC55m
2026-06-22 CSZ9505 - Jun 22, 05:24 UTCJun 22, 05:34 UTC10m
2026-06-22 CSZ9210 - Jun 22, 02:59 UTCJun 22, 03:10 UTC10m
2026-06-21 CSZ9209 - Jun 21, 12:35 UTCJun 21, 12:44 UTC10m
2026-06-21 CSZ9506 - Jun 21, 10:04 UTCJun 21, 10:29 UTC25m
2026-06-21 CSZ9505 - Jun 21, 05:10 UTCJun 21, 05:20 UTC10m
2026-06-21 CSZ9210 - Jun 21, 03:00 UTCJun 21, 03:14 UTC15m
2026-06-20 CSZ9209 - Jun 20, 12:45 UTCJun 20, 12:59 UTC15m
2026-06-20 CSZ9506 - Jun 20, 09:54 UTCJun 20, 10:44 UTC50m
2026-06-19 CSZ9890 - Jun 19, 14:54 UTCJun 19, 15:14 UTC20m
2026-06-19 CSZ9889 - Jun 19, 09:55 UTCJun 19, 10:04 UTC10m
2026-06-19 CSZ9944 - Jun 19, 07:25 UTCJun 19, 07:49 UTC25m
2026-06-19 CSZ9943 - Jun 19, 03:09 UTCJun 19, 03:20 UTC10m
2026-06-18 CSZ9890 - Jun 18, 17:10 UTCJun 18, 18:15 UTC1h 5m
2026-06-18 CSZ9889 - Jun 18, 13:10 UTCJun 18, 13:20 UTC10m
2026-06-18 CSZ9943 - Jun 18, 01:25 UTCJun 18, 01:35 UTC10m
2026-06-17 CSZ9506 - Jun 17, 11:40 UTCJun 17, 11:50 UTC10m
2026-06-17 CSZ9505 - Jun 17, 05:10 UTCJun 17, 05:20 UTC10m
2026-06-17 CSZ9210 - Jun 17, 03:10 UTCJun 17, 03:20 UTC10m
2026-06-16 CSZ9209 - Jun 16, 15:09 UTCJun 16, 15:24 UTC15m
2026-06-16 CSZ9506 PVG → SZX Jun 16, 13:04 UTCJun 16, 13:19 UTC15m
2026-06-16 CSZ9505 - Jun 16, 05:20 UTCJun 16, 05:34 UTC15m
2026-06-15 CSZ9506 PVG → SZX Jun 15, 15:40 UTCJun 15, 15:59 UTC20m
2026-06-15 CSZ9505 - Jun 15, 07:15 UTCJun 15, 07:29 UTC15m
2026-06-15 CSZ9210 XIY → SZX Jun 15, 03:00 UTCJun 15, 03:15 UTC15m
2026-06-14 CSZ9209 SZX → XIY Jun 14, 14:55 UTCJun 14, 15:05 UTC10m
2026-06-14 CSZ9506 PVG → SZX Jun 14, 11:45 UTCJun 14, 11:55 UTC10m
2026-06-14 CSZ9505 SZX → PVG Jun 14, 05:15 UTCJun 14, 05:25 UTC10m
2026-06-13 CSZ9209 SZX → XIY Jun 13, 13:10 UTCJun 13, 13:20 UTC10m
2026-06-13 CSZ9505 SZX → PVG Jun 13, 05:05 UTCJun 13, 05:20 UTC15m
2026-06-12 CSZ9209 SZX → XIY Jun 12, 12:45 UTCJun 12, 13:00 UTC15m
2026-06-12 CSZ9506 PVG → SZX Jun 12, 10:50 UTCJun 12, 11:00 UTC10m
2026-06-12 CSZ9506 PVG → SZX Jun 12, 06:25 UTCJun 12, 10:15 UTC3h 50m
2026-06-12 CSZ9505 SZX → PVG Jun 12, 05:10 UTCJun 12, 05:20 UTC10m
2026-06-12 CSZ9210 XIY → SZX Jun 12, 02:55 UTCJun 12, 03:05 UTC10m
2026-06-11 CSZ9209 SZX → XIY Jun 11, 12:40 UTCJun 11, 12:50 UTC10m
2026-06-11 CSZ9506 PVG → SZX Jun 11, 10:25 UTCJun 11, 10:45 UTC20m
2026-06-11 CSZ9505 SZX → PVG Jun 11, 05:20 UTCJun 11, 05:30 UTC10m

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 5h 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, CSZ9809, CSZ9810.