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 20h ago
Flights observed
107
Distinct callsigns
20
Country
CN
Last broadcast
20h ago

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 - 9 2026-07-11
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
CSZ8666 Shenzhen Airlines 3 2026-06-06
CSZ8662 Shenzhen Airlines 3 2026-05-30
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
CSZ8862 Shenzhen Airlines 2 2026-06-13
CSZ8861 Shenzhen Airlines 2 2026-06-12
CSZ8664 Shenzhen Airlines 2 2026-06-02
CSZ8663 Shenzhen Airlines 2 2026-06-07
CSZ8661 Shenzhen Airlines 2 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-25 CSZ9367 - Jun 25, 07:25 UTCJun 25, 08:09 UTC45m
2026-06-24 CSZ9368 - Jun 24, 10:10 UTCJun 24, 10:30 UTC20m
2026-06-19 CSZ9096 - Jun 19, 04:54 UTCJun 19, 05:40 UTC45m
2026-06-19 CSZ9095 - Jun 19, 01:54 UTCJun 19, 02:39 UTC45m
2026-06-17 CSZ674 - Jun 17, 04:10 UTCJun 17, 05:15 UTC1h 5m
2026-06-17 CSZ673 - Jun 17, 01:50 UTCJun 17, 02:45 UTC55m
2026-06-16 CSZ673 HKG → KIX Jun 16, 05:00 UTCJun 17, 02:45 UTC21h 46m
2026-06-16 CSZ9095 - Jun 16, 02:34 UTCJun 16, 02:50 UTC15m
2026-06-14 CSZ9201 SZX → XIY Jun 14, 04:40 UTCJun 14, 04:55 UTC15m
2026-06-13 CSZ8862 KHN → SZX Jun 13, 15:30 UTCJun 13, 15:40 UTC10m
2026-06-12 CSZ8861 SZX → KHN Jun 12, 14:10 UTCJun 12, 14:20 UTC10m
2026-06-12 CSZ9451 SZX → KMG Jun 12, 00:05 UTCJun 12, 00:50 UTC46m
2026-06-11 CSZ9808 CGO → SZX Jun 11, 16:05 UTCJun 11, 16:30 UTC25m
2026-06-09 CSZ9157 PEK → WUX Jun 9, 03:05 UTCJun 9, 03:20 UTC15m
2026-06-08 CSZ9807 SZX → CGO Jun 8, 04:20 UTCJun 8, 04:30 UTC10m
2026-06-08 CSZ9308 CGO → SZX Jun 8, 01:45 UTCJun 8, 01:55 UTC10m
2026-06-07 CSZ9307 SZX → CGO Jun 7, 12:50 UTCJun 7, 13:05 UTC15m
2026-06-07 CSZ8663 NTG → TYN Jun 7, 03:00 UTCJun 7, 03:10 UTC10m
2026-06-06 CSZ9405 SZX → CTU Jun 6, 07:50 UTCJun 6, 08:00 UTC10m
2026-06-06 CSZ8666 NTG → SZX Jun 6, 02:45 UTCJun 6, 03:05 UTC20m
2026-06-05 CSZ8697 NTG → ZUH Jun 5, 07:05 UTCJun 5, 07:20 UTC15m
2026-06-05 CSZ8661 SZX → NTG Jun 5, 01:45 UTCJun 5, 01:55 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.

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 20h ago.
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.