Apparatus

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sensors Mode-S transponder

781225

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-8865 · AIRBUS A-330-300

Hex
781225
Octal
36011045
Decimal
7,868,965
Country
CN
Tail
B-8865
Type
A333
No current signal · last broadcast 5h ago
Flights observed
118
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 781225.

Country allocation

The ICAO 24-bit address 781225 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
CSZ887 Shenzhen Airlines 14 2026-05-25
CSZ812 Shenzhen Airlines 11 2026-05-29
CSZ888 Shenzhen Airlines 9 2026-05-25
CSZ865 Shenzhen Airlines 8 2026-05-11
CSZ9409 Shenzhen Airlines 6 2026-05-20
CSZ811 Shenzhen Airlines 6 2026-05-28
CSZ9401 Shenzhen Airlines 5 2026-05-21
CSZ9513 Shenzhen Airlines 4 2026-05-20
CSZ9507 Shenzhen Airlines 4 2026-05-17
CSZ866 Shenzhen Airlines 4 2026-05-11
CSZ9889 Shenzhen Airlines 3 2026-05-22
CSZ9508 Shenzhen Airlines 3 2026-05-13
CSZ9943 Shenzhen Airlines 2 2026-05-22
CSZ9894 Shenzhen Airlines 2 2026-05-28
CSZ9893 Shenzhen Airlines 2 2026-05-28
CSZ9891 Shenzhen Airlines 2 2026-04-27
CSZ9884 Shenzhen Airlines 2 2026-04-30
CSZ9883 Shenzhen Airlines 2 2026-04-30
CSZ9881 Shenzhen Airlines 2 2026-05-29
CSZ9514 Shenzhen Airlines 2 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 CSZ9881 SZX → HGH May 29, 23:25 UTCMay 29, 23:35 UTC10m
2026-05-29 CSZ812 MEL → SZX May 29, 20:45 UTCMay 29, 21:00 UTC15m
2026-05-29 CSZ812 MEL → SZX May 29, 11:35 UTCMay 29, 15:35 UTC4h 0m
2026-05-28 CSZ811 SZX → MEL May 28, 16:25 UTCMay 29, 01:05 UTC8h 40m
2026-05-28 CSZ9894 HFE → SZX May 28, 14:05 UTCMay 28, 14:25 UTC20m
2026-05-28 CSZ9893 SZX → WUH May 28, 08:50 UTCMay 28, 09:00 UTC10m
2026-05-28 CSZ9403 SZX → CTU May 28, 00:45 UTCMay 28, 01:05 UTC20m
2026-05-27 CSZ9108 PEK → SZX May 27, 11:20 UTCMay 27, 11:40 UTC20m
2026-05-27 CSZ9107 SZX → PEK May 27, 06:34 UTCMay 27, 06:44 UTC10m
2026-05-27 CSZ9882 HGH → SZX May 27, 03:59 UTCMay 27, 04:19 UTC20m
2026-05-26 CSZ9881 SZX → HGH May 26, 23:29 UTCMay 26, 23:39 UTC10m
2026-05-25 CSZ888 LHR → SZX May 25, 21:24 UTCMay 26, 03:45 UTC6h 20m
2026-05-25 CSZ887 SZX → LHR May 25, 11:05 UTCMay 25, 18:20 UTC7h 15m
2026-05-25 CSZ887 SZX → LHR May 25, 05:50 UTCMay 25, 06:05 UTC15m
2026-05-23 CSZ888 LHR → SZX May 23, 21:25 UTCMay 24, 03:55 UTC6h 30m
2026-05-23 CSZ887 SZX → LHR May 23, 12:10 UTCMay 23, 19:10 UTC7h 1m
2026-05-23 CSZ887 SZX → LHR May 23, 06:40 UTCMay 23, 06:50 UTC10m
2026-05-22 CSZ9889 SZX → PEK May 22, 07:45 UTCMay 22, 07:55 UTC10m
2026-05-22 CSZ9943 SZX → HFE May 22, 01:00 UTCMay 22, 01:10 UTC10m
2026-05-21 CSZ9410 CTU → SZX May 21, 19:05 UTCMay 21, 19:15 UTC10m
2026-05-21 CSZ9401 SZX → CTU May 21, 03:40 UTCMay 21, 03:55 UTC15m
2026-05-20 CSZ9409 SZX → CTU May 20, 09:05 UTCMay 20, 09:15 UTC10m
2026-05-20 CSZ9514 PVG → SZX May 20, 06:10 UTCMay 20, 06:30 UTC20m
2026-05-20 CSZ9513 SZX → PVG May 20, 00:45 UTCMay 20, 00:55 UTC10m
2026-05-19 CSZ9409 SZX → CTU May 19, 09:35 UTCMay 19, 09:50 UTC15m
2026-05-19 CSZ9514 PVG → SZX May 19, 07:50 UTCMay 19, 08:10 UTC20m
2026-05-19 CSZ9513 SZX → PVG May 19, 00:45 UTCMay 19, 00:55 UTC10m
2026-05-18 CSZ9108 PEK → SZX May 18, 11:25 UTCMay 18, 11:50 UTC25m
2026-05-18 CSZ9107 SZX → PEK May 18, 07:25 UTCMay 18, 07:40 UTC15m
2026-05-18 CSZ9401 SZX → CTU May 18, 00:10 UTCMay 18, 00:20 UTC10m
2026-05-17 CSZ9507 SZX → SHA May 17, 08:05 UTCMay 17, 08:15 UTC10m
2026-05-17 CSZ9402 CTU → SZX May 17, 05:45 UTCMay 17, 05:55 UTC10m
2026-05-17 CSZ9401 SZX → CTU May 17, 00:00 UTCMay 17, 00:15 UTC15m
2026-05-16 CSZ9409 SZX → CTU May 16, 09:40 UTCMay 16, 10:01 UTC20m
2026-05-16 - - May 16, 05:20 UTCMay 16, 05:35 UTC15m
2026-05-16 CSZ9513 SZX → PVG May 16, 00:45 UTCMay 16, 00:55 UTC10m
2026-05-14 CSZ9513 SZX → PVG May 14, 00:40 UTCMay 14, 00:50 UTC10m
2026-05-13 CSZ9508 SHA → SZX May 13, 14:45 UTCMay 13, 15:10 UTC25m
2026-05-13 CSZ9507 SZX → SHA May 13, 08:40 UTCMay 13, 09:00 UTC20m
2026-05-13 CSZ9507 SZX → SHA May 13, 07:55 UTCMay 13, 08:10 UTC15m
2026-05-13 CSZ9943 SZX → HFE May 13, 00:50 UTCMay 13, 01:00 UTC10m
2026-05-12 CSZ9889 SZX → PEK May 12, 07:15 UTCMay 12, 07:30 UTC15m
2026-05-11 CSZ866 BCN → SZX May 11, 11:25 UTCMay 11, 14:35 UTC3h 10m
2026-05-11 CSZ865 SZX → BCN May 11, 01:05 UTCMay 11, 07:40 UTC6h 35m
2026-05-10 CSZ865 SZX → BCN May 10, 18:05 UTCMay 10, 18:15 UTC10m
2026-05-09 CSZ888 LHR → SZX May 9, 21:05 UTCMay 10, 01:55 UTC4h 50m
2026-05-09 CSZ887 SZX → LHR May 9, 13:20 UTCMay 9, 19:00 UTC5h 40m
2026-05-09 CSZ887 SZX → LHR May 9, 06:10 UTCMay 9, 06:20 UTC10m
2026-05-08 CSZ9890 SZX → PEK May 8, 12:10 UTCMay 8, 12:25 UTC15m
2026-05-08 CSZ9889 SZX → PEK May 8, 07:20 UTCMay 8, 07:29 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-8865 page for operator, model, and routing details .

Mode-S 781225 frequently asked

What is Mode-S code 781225?
781225 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-8865.
Where is Mode-S 781225 registered?
Mode-S code 781225 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781225 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 781225, octal 36011045, decimal 7,868,965.
What flights does 781225 operate?
Mode-S 781225 has broadcast 20 distinct callsigns, including CSZ887, CSZ812, CSZ888, CSZ865, CSZ9409.