Apparatus

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sensors Mode-S transponder

7811AA

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1477 · BOEING 737-800

Hex
7811AA
Octal
36010652
Decimal
7,868,842
Country
CN
Tail
B-1477
Type
B738
No current signal · last broadcast Jul 26, 06:55 UTC
Flights observed
192
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 06:55 UTC

Last known position

Most recent position reported by Mode-S 7811AA.

Country allocation

The ICAO 24-bit address 7811AA 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 - 15 2026-07-09
CSZ9323 - 7 2026-07-09
CSZ8862 - 6 2026-06-26
CSZ9368 Shenzhen Airlines 5 2026-05-11
CSZ8861 Shenzhen Airlines 5 2026-06-25
CSZ9452 - 4 2026-07-07
CSZ9303 Shenzhen Airlines 4 2026-07-26
CSZ8966 - 4 2026-07-01
CSZ8934 - 4 2026-07-05
CSZ8105 - 4 2026-06-24
CSZ634 - 4 2026-06-30
CSZ633 - 4 2026-06-30
CSZ9366 Shenzhen Airlines 3 2026-05-06
CSZ9130 - 3 2026-07-03
CSZ8985 - 3 2026-06-30
CSZ8965 - 3 2026-07-01
CSZ8933 - 3 2026-07-05
CSZ8918 - 3 2026-07-13
CSZ8663 Shenzhen Airlines 3 2026-04-27
CSZ8662 - 3 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ9303 SZX → CGO Jul 26, 06:45 UTCJul 26, 06:55 UTC10m
2026-07-25 CSZ9310 CGO → SZX Jul 25, 04:55 UTCJul 25, 05:05 UTC10m
2026-07-24 CSZ8375 CGO → CGQ Jul 24, 09:05 UTCJul 24, 09:45 UTC40m
2026-07-24 CSZ9303 SZX → CGO Jul 24, 04:45 UTCJul 24, 04:55 UTC10m
2026-07-24 CSZ8666 NTG → SZX Jul 24, 01:55 UTCJul 24, 02:45 UTC50m
2026-07-23 CSZ9846 NKG → SZX Jul 23, 10:45 UTCJul 23, 11:15 UTC30m
2026-07-23 CSZ9845 SZX → NKG Jul 23, 03:55 UTCJul 23, 04:05 UTC10m
2026-07-22 CSZ9920 TAO → SZX Jul 22, 12:55 UTCJul 22, 13:50 UTC55m
2026-07-22 CSZ9960 PEK → SZX Jul 22, 03:45 UTCJul 22, 04:00 UTC15m
2026-07-21 CSZ9959 SZX → PEK Jul 21, 23:30 UTCJul 21, 23:40 UTC10m
2026-07-21 CSZ8970 - Jul 21, 17:25 UTCJul 21, 17:50 UTC25m
2026-07-21 CSZ8969 - Jul 21, 13:25 UTCJul 21, 13:35 UTC10m
2026-07-20 CSZ9398 - Jul 20, 11:50 UTCJul 20, 12:00 UTC10m
2026-07-20 CSZ9168 - Jul 20, 06:00 UTCJul 20, 06:15 UTC15m
2026-07-19 CSZ9389 - Jul 19, 07:30 UTCJul 19, 07:40 UTC10m
2026-07-15 CSZ9853 - Jul 15, 12:50 UTCJul 15, 13:00 UTC10m
2026-07-15 CSZ9301 - Jul 15, 01:10 UTCJul 15, 01:20 UTC10m
2026-07-14 - - Jul 14, 13:55 UTCJul 14, 14:05 UTC10m
2026-07-14 CSZ9457 - Jul 14, 08:05 UTCJul 14, 08:15 UTC10m
2026-07-13 CSZ8918 - Jul 13, 07:55 UTCJul 13, 13:25 UTC5h 30m
2026-07-13 CSZ8917 - Jul 13, 06:45 UTCJul 13, 06:55 UTC10m
2026-07-13 CSZ8932 - Jul 13, 04:25 UTCJul 13, 04:40 UTC15m
2026-07-13 CSZ8931 - Jul 13, 00:01 UTCJul 13, 00:10 UTC10m
2026-07-11 CSZ9126 - Jul 11, 14:40 UTCJul 11, 15:00 UTC20m
2026-07-11 CSZ9125 - Jul 11, 07:00 UTCJul 11, 07:10 UTC10m
2026-07-11 CSZ9310 - Jul 11, 05:20 UTCJul 11, 05:40 UTC20m
2026-07-10 CSZ9309 - Jul 10, 23:10 UTCJul 10, 23:20 UTC10m
2026-07-10 CSZ8662 - Jul 10, 17:30 UTCJul 10, 17:50 UTC20m
2026-07-09 CSZ8665 - Jul 9, 15:15 UTCJul 9, 15:25 UTC10m
2026-07-09 CSZ9323 - Jul 9, 08:25 UTCJul 9, 08:35 UTC10m
2026-07-09 CSZ9451 - Jul 9, 00:10 UTCJul 9, 00:25 UTC15m
2026-07-08 CSZ9407 - Jul 8, 09:45 UTCJul 8, 10:00 UTC15m
2026-07-08 CSZ9451 - Jul 8, 02:00 UTCJul 8, 02:10 UTC10m
2026-07-07 CSZ8918 - Jul 7, 21:20 UTCJul 7, 21:35 UTC15m
2026-07-07 CSZ8918 - Jul 7, 19:45 UTCJul 7, 20:30 UTC45m
2026-07-07 CSZ8917 - Jul 7, 14:25 UTCJul 7, 14:35 UTC10m
2026-07-07 CSZ9452 - Jul 7, 07:00 UTCJul 7, 07:10 UTC10m
2026-07-07 CSZ9451 - Jul 7, 00:55 UTCJul 7, 01:10 UTC15m
2026-07-06 CSZ9640 - Jul 6, 05:25 UTCJul 6, 13:30 UTC8h 5m
2026-07-06 CSZ9639 - Jul 6, 03:10 UTCJul 6, 03:20 UTC10m
2026-07-05 CSZ8934 - Jul 5, 18:15 UTCJul 5, 18:35 UTC20m
2026-07-05 CSZ8933 - Jul 5, 14:00 UTCJul 5, 14:10 UTC10m
2026-07-05 CSZ9323 - Jul 5, 07:15 UTCJul 5, 07:35 UTC20m
2026-07-05 CSZ9451 - Jul 5, 00:05 UTCJul 5, 00:25 UTC20m
2026-07-04 CSZ9324 - Jul 4, 14:45 UTCJul 4, 14:55 UTC10m
2026-07-04 CSZ9323 - Jul 4, 10:45 UTCJul 4, 11:00 UTC15m
2026-07-04 CSZ9451 - Jul 4, 02:30 UTCJul 4, 02:45 UTC15m
2026-07-03 CSZ9949 - Jul 3, 14:25 UTCJul 3, 14:35 UTC10m
2026-07-03 CSZ9130 - Jul 3, 12:20 UTCJul 3, 12:35 UTC15m
2026-07-03 CSZ9129 - Jul 3, 03:35 UTCJul 3, 03:45 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-1477 page for operator, model, and routing details .

Mode-S 7811AA frequently asked

What is Mode-S code 7811AA?
7811AA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1477.
Where is Mode-S 7811AA registered?
Mode-S code 7811AA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7811AA broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 06:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7811AA, octal 36010652, decimal 7,868,842.
What flights does 7811AA operate?
Mode-S 7811AA has broadcast 20 distinct callsigns, including CSZ9451, CSZ9323, CSZ8862, CSZ9368, CSZ8861.