Apparatus

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sensors Mode-S transponder

7811A8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1475 · BOEING 737-800

Hex
7811A8
Octal
36010650
Decimal
7,868,840
Country
CN
Tail
B-1475
Type
B738
No current signal · last broadcast Jul 26, 14:15 UTC
Flights observed
129
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 14:15 UTC

Last known position

Most recent position reported by Mode-S 7811A8.

Country allocation

The ICAO 24-bit address 7811A8 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
CSZ9451 Shenzhen Airlines 10 2026-07-25
CSZ673 - 5 2026-06-17
CSZ9095 - 4 2026-06-19
CSZ674 - 4 2026-06-17
CSZ9342 - 3 2026-07-03
CSZ9323 Shenzhen Airlines 3 2026-06-04
CSZ9096 - 3 2026-06-19
CSZ8862 Shenzhen Airlines 3 2026-07-23
CSZ8861 - 3 2026-07-26
CSZ8666 Shenzhen Airlines 3 2026-06-06
CSZ8662 Shenzhen Airlines 3 2026-05-30
CSZ206 - 3 2026-07-16
CSZ9808 Shenzhen Airlines 2 2026-06-11
CSZ9461 - 2 2026-07-09
CSZ9407 Shenzhen Airlines 2 2026-06-01
CSZ9368 - 2 2026-06-25
CSZ9324 - 2 2026-07-11
CSZ9157 Shenzhen Airlines 2 2026-06-09
CSZ8664 Shenzhen Airlines 2 2026-06-02
CSZ8663 Shenzhen Airlines 2 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ8861 - Jul 26, 14:05 UTCJul 26, 14:15 UTC10m
2026-07-26 CSZ9325 SZX → SYX Jul 26, 08:10 UTCJul 26, 08:20 UTC10m
2026-07-25 CSZ8918 WUX → HUZ Jul 25, 12:30 UTCJul 25, 13:50 UTC1h 20m
2026-07-25 CSZ8917 HUZ → WUX Jul 25, 06:50 UTCJul 25, 07:00 UTC10m
2026-07-25 CSZ9451 SZX → KMG Jul 25, 00:10 UTCJul 25, 00:20 UTC10m
2026-07-24 CSZ9938 CSX → SZX Jul 24, 17:10 UTCJul 24, 17:25 UTC15m
2026-07-24 CSZ9937 SZX → CSX Jul 24, 10:45 UTCJul 24, 11:00 UTC15m
2026-07-24 CSZ9454 KMG → SZX Jul 24, 08:45 UTCJul 24, 08:55 UTC10m
2026-07-23 CSZ8862 KHN → SZX Jul 23, 23:40 UTCJul 23, 23:50 UTC10m
2026-07-23 CSZ9920 TAO → SZX Jul 23, 13:20 UTCJul 23, 13:45 UTC25m
2026-07-23 CSZ9919 SZX → TAO Jul 23, 06:50 UTCJul 23, 07:00 UTC10m
2026-07-22 CSZ9941 SZX → HFE Jul 22, 22:55 UTCJul 22, 23:05 UTC10m
2026-07-22 CSZ9958 YBP → SZX Jul 22, 14:25 UTCJul 22, 14:35 UTC10m
2026-07-22 CSZ8925 - Jul 22, 03:15 UTCJul 22, 03:25 UTC10m
2026-07-22 CSZ9814 SHA → SZX Jul 22, 00:45 UTCJul 22, 01:30 UTC45m
2026-07-17 CSZ9347 - Jul 17, 06:29 UTCJul 17, 10:50 UTC4h 20m
2026-07-16 CSZ206 - Jul 16, 23:44 UTCJul 16, 23:59 UTC15m
2026-07-16 CSZ206 - Jul 16, 20:39 UTCJul 16, 21:00 UTC20m
2026-07-16 CSZ206 - Jul 16, 18:59 UTCJul 16, 19:35 UTC35m
2026-07-16 CSZ205 - Jul 16, 16:35 UTCJul 16, 17:45 UTC1h 10m
2026-07-16 CSZ205 - Jul 16, 15:49 UTCJul 16, 16:00 UTC10m
2026-07-16 CSZ9168 - Jul 16, 05:55 UTCJul 16, 06:15 UTC20m
2026-07-14 CSZ9301 - Jul 14, 00:20 UTCJul 14, 00:35 UTC15m
2026-07-13 CSZ9950 - Jul 13, 16:50 UTCJul 13, 17:05 UTC15m
2026-07-13 CSZ9130 - Jul 13, 10:40 UTCJul 13, 10:55 UTC15m
2026-07-12 CSZ9330 - Jul 12, 05:30 UTCJul 12, 05:40 UTC10m
2026-07-12 CSZ9329 - Jul 12, 01:05 UTCJul 12, 01:20 UTC15m
2026-07-11 CSZ9324 - Jul 11, 11:00 UTCJul 11, 11:15 UTC15m
2026-07-11 CSZ9451 - Jul 11, 00:20 UTCJul 11, 00:30 UTC10m
2026-07-10 CSZ208 - Jul 10, 20:25 UTCJul 10, 20:40 UTC15m
2026-07-10 CSZ208 - Jul 10, 18:45 UTCJul 10, 19:15 UTC30m
2026-07-10 CSZ207 - Jul 10, 15:35 UTCJul 10, 17:20 UTC1h 45m
2026-07-10 CSZ9465 - Jul 10, 09:20 UTCJul 10, 09:30 UTC10m
2026-07-10 CSZ9451 - Jul 10, 02:50 UTCJul 10, 03:00 UTC10m
2026-07-09 CSZ9457 - Jul 9, 09:25 UTCJul 9, 09:40 UTC15m
2026-07-09 CSZ9461 - Jul 9, 01:00 UTCJul 9, 01:10 UTC10m
2026-07-08 CSZ9233 - Jul 8, 10:50 UTCJul 8, 11:00 UTC10m
2026-07-08 CSZ9461 - Jul 8, 00:50 UTCJul 8, 01:00 UTC10m
2026-07-07 CSZ9398 - Jul 7, 17:25 UTCJul 7, 17:35 UTC10m
2026-07-04 CSZ9389 - Jul 4, 08:00 UTCJul 4, 08:10 UTC10m
2026-07-03 CSZ9342 - Jul 3, 11:15 UTCJul 4, 08:10 UTC20h 55m
2026-07-03 CSZ9342 - Jul 3, 01:40 UTCJul 3, 11:35 UTC9h 55m
2026-07-01 CSZ9342 - Jul 1, 11:15 UTCJul 2, 01:50 UTC14h 35m
2026-07-01 CSZ9341 - Jul 1, 01:35 UTCJul 1, 01:45 UTC10m
2026-06-28 CSZ9397 - Jun 28, 23:44 UTCJun 28, 23:54 UTC10m
2026-06-28 CSZ9207 - Jun 28, 11:00 UTCJun 28, 11:14 UTC15m
2026-06-28 CSZ9929 - Jun 28, 02:10 UTCJun 28, 02:25 UTC15m
2026-06-27 CSZ8938 - Jun 27, 18:39 UTCJun 27, 19:00 UTC20m
2026-06-27 CSZ8937 - Jun 27, 13:30 UTCJun 27, 13:40 UTC10m
2026-06-25 CSZ9368 - Jun 25, 10:15 UTCJun 25, 10:30 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-1475 page for operator, model, and routing details .

Mode-S 7811A8 frequently asked

What is Mode-S code 7811A8?
7811A8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1475.
Where is Mode-S 7811A8 registered?
Mode-S code 7811A8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7811A8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7811A8, octal 36010650, decimal 7,868,840.
What flights does 7811A8 operate?
Mode-S 7811A8 has broadcast 20 distinct callsigns, including CSZ9451, CSZ673, CSZ9095, CSZ674, CSZ9342.