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 1h ago
Flights observed
45
Distinct callsigns
20
Country
CN
Last broadcast
1h 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
CSZ8662 Shenzhen Airlines 3 2026-05-30
CSZ674 Shenzhen Airlines 3 2026-05-15
CSZ673 Shenzhen Airlines 3 2026-05-15
CSZ9451 Shenzhen Airlines 2 2026-05-26
CSZ9096 Shenzhen Airlines 2 2026-05-17
CSZ9095 Shenzhen Airlines 2 2026-05-17
CSZ8666 Shenzhen Airlines 2 2026-05-01
CSZ634 Shenzhen Airlines 2 2026-04-17
CSZ633 Shenzhen Airlines 2 2026-04-17
CSZ9946 - 1 2026-04-13
CSZ9858 Shenzhen Airlines 1 2026-05-09
CSZ9846 Shenzhen Airlines 1 2026-05-01
CSZ9845 Shenzhen Airlines 1 2026-05-01
CSZ9813 Shenzhen Airlines 1 2026-04-28
CSZ9808 Shenzhen Airlines 1 2026-04-29
CSZ9804 Shenzhen Airlines 1 2026-05-19
CSZ9714 Shenzhen Airlines 1 2026-04-22
CSZ9526 Shenzhen Airlines 1 2026-05-25
CSZ9525 Shenzhen Airlines 1 2026-05-25
CSZ9520 Shenzhen Airlines 1 2026-05-09

Recent flights last 45

DateFlightRouteTakeoffLandingDuration
2026-05-30 CSZ8662 NTG → SZX May 30, 15:15 UTCMay 30, 15:35 UTC20m
2026-05-26 CSZ9451 SZX → KMG May 26, 23:54 UTCMay 27, 00:04 UTC10m
2026-05-26 CSZ9407 SZX → CTU May 26, 06:34 UTCMay 26, 06:49 UTC15m
2026-05-25 CSZ8931 - May 25, 23:54 UTCMay 26, 00:09 UTC15m
2026-05-25 CSZ9526 PVG → SZX May 25, 12:15 UTCMay 25, 13:35 UTC1h 20m
2026-05-25 CSZ9525 SZX → PVG May 25, 07:40 UTCMay 25, 07:50 UTC10m
2026-05-25 CSZ9452 KMG → SZX May 25, 05:50 UTCMay 25, 06:00 UTC10m
2026-05-24 CSZ8662 NTG → SZX May 24, 15:40 UTCMay 24, 16:05 UTC25m
2026-05-23 CSZ8661 SZX → NTG May 23, 01:00 UTCMay 23, 01:10 UTC10m
2026-05-22 CSZ8862 KHN → SZX May 22, 16:50 UTCMay 22, 17:05 UTC15m
2026-05-19 CSZ9804 WUX → SZX May 19, 09:45 UTCMay 19, 10:05 UTC20m
2026-05-17 CSZ9096 HKG → WUX May 17, 05:20 UTCMay 17, 06:25 UTC1h 5m
2026-05-17 CSZ9095 WUX → HKG May 17, 02:30 UTCMay 17, 02:50 UTC20m
2026-05-15 CSZ674 KIX → WUX May 15, 04:35 UTCMay 15, 05:15 UTC40m
2026-05-15 CSZ673 WUX → KIX May 15, 02:35 UTCMay 15, 03:25 UTC50m
2026-05-13 CSZ674 KIX → WUX May 13, 04:15 UTCMay 13, 05:00 UTC45m
2026-05-13 CSZ673 WUX → KIX May 13, 02:05 UTCMay 13, 02:55 UTC50m
2026-05-11 CSZ674 KIX → WUX May 11, 04:20 UTCMay 11, 05:10 UTC50m
2026-05-11 CSZ673 WUX → KIX May 11, 02:05 UTCMay 11, 02:45 UTC40m
2026-05-10 CSZ9463 CKG → NKG May 10, 03:25 UTCMay 10, 03:40 UTC15m
2026-05-09 CSZ9520 PVG → SZX May 9, 12:55 UTCMay 9, 13:15 UTC20m
2026-05-09 CSZ9519 SZX → PVG May 9, 07:20 UTCMay 9, 07:30 UTC10m
2026-05-09 CSZ9858 NKG → CAN May 9, 01:55 UTCMay 9, 02:15 UTC20m
2026-05-02 CSZ9157 PEK → WUX May 2, 03:00 UTCMay 2, 03:10 UTC10m
2026-05-01 CSZ9846 NKG → SZX May 1, 09:20 UTCMay 1, 09:45 UTC25m
2026-05-01 CSZ9845 SZX → NKG May 1, 04:00 UTCMay 1, 04:15 UTC15m
2026-05-01 CSZ8666 NTG → SZX May 1, 02:25 UTCMay 1, 02:55 UTC30m
2026-04-30 CSZ9323 SZX → SYX Apr 30, 07:20 UTCApr 30, 07:30 UTC10m
2026-04-30 CSZ9451 SZX → KMG Apr 30, 00:00 UTCApr 30, 00:15 UTC15m
2026-04-29 CSZ9808 CGO → SZX Apr 29, 18:50 UTCApr 29, 19:15 UTC25m
2026-04-29 CSZ9096 HKG → WUX Apr 29, 04:55 UTCApr 29, 05:15 UTC20m
2026-04-29 CSZ9095 WUX → HKG Apr 29, 02:45 UTCApr 29, 03:10 UTC25m
2026-04-28 CSZ9813 SZX → SHA Apr 28, 11:40 UTCApr 28, 11:50 UTC10m
2026-04-28 CSZ9240 URC → SZX Apr 28, 09:40 UTCApr 28, 09:50 UTC10m
2026-04-28 CSZ9239 SZX → URC Apr 28, 02:20 UTCApr 28, 02:30 UTC10m
2026-04-24 CSZ8662 NTG → SZX Apr 24, 19:10 UTCApr 24, 19:30 UTC20m
2026-04-22 CSZ9714 HFE → SHE Apr 22, 05:45 UTCApr 22, 09:30 UTC3h 45m
2026-04-17 CSZ634 ICN → SZX Apr 17, 10:05 UTCApr 17, 10:15 UTC10m
2026-04-17 CSZ634 ICN → SZX Apr 17, 06:40 UTCApr 17, 07:15 UTC35m
2026-04-17 CSZ633 SZX → ICN Apr 17, 04:25 UTCApr 17, 05:05 UTC41m
2026-04-17 CSZ633 SZX → ICN Apr 17, 02:20 UTCApr 17, 02:30 UTC10m
2026-04-16 CSZ8861 - Apr 16, 16:00 UTCApr 16, 16:10 UTC10m
2026-04-16 CSZ9303 SZX → CGO Apr 16, 05:09 UTCApr 16, 05:20 UTC10m
2026-04-16 CSZ8666 NTG → SZX Apr 16, 03:09 UTCApr 16, 03:24 UTC15m
2026-04-13 CSZ9946 - Apr 13, 09:05 UTCApr 13, 09:15 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 1h 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 CSZ8662, CSZ674, CSZ673, CSZ9451, CSZ9096.