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 2h ago
Flights observed
204
Distinct callsigns
20
Country
CN
Last broadcast
2h 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 - 25 2026-07-06
CSZ865 - 24 2026-07-12
CSZ888 - 16 2026-07-07
CSZ812 Shenzhen Airlines 13 2026-06-14
CSZ866 - 12 2026-07-13
CSZ9241 - 9 2026-07-10
CSZ9409 Shenzhen Airlines 7 2026-06-02
CSZ9401 - 7 2026-06-30
CSZ9108 - 7 2026-07-05
CSZ811 Shenzhen Airlines 7 2026-06-13
CSZ9507 - 6 2026-06-30
CSZ9107 - 6 2026-07-05
CSZ9884 - 5 2026-07-14
CSZ9883 - 5 2026-07-14
CSZ9882 - 5 2026-07-06
CSZ9881 Shenzhen Airlines 5 2026-07-05
CSZ9513 Shenzhen Airlines 4 2026-05-20
CSZ9508 - 4 2026-06-30
CSZ9894 - 3 2026-07-09
CSZ9889 Shenzhen Airlines 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSZ9884 - Jul 14, 07:05 UTCJul 14, 07:40 UTC35m
2026-07-14 CSZ9883 - Jul 14, 02:45 UTCJul 14, 02:55 UTC10m
2026-07-13 CSZ866 - Jul 13, 10:55 UTCJul 13, 14:15 UTC3h 20m
2026-07-12 CSZ865 - Jul 12, 23:10 UTCJul 12, 23:30 UTC20m
2026-07-12 CSZ865 - Jul 12, 18:01 UTCJul 12, 18:15 UTC15m
2026-07-12 CSZ9245 - Jul 12, 01:00 UTCJul 12, 01:10 UTC10m
2026-07-11 CSZ9403 - Jul 11, 01:15 UTCJul 11, 01:30 UTC15m
2026-07-10 CSZ9241 - Jul 10, 02:55 UTCJul 10, 03:10 UTC15m
2026-07-09 CSZ9894 - Jul 9, 17:50 UTCJul 9, 18:15 UTC25m
2026-07-09 CSZ9884 - Jul 9, 09:55 UTCJul 9, 10:30 UTC35m
2026-07-09 CSZ9883 - Jul 9, 02:00 UTCJul 9, 02:10 UTC10m
2026-07-08 CSZ866 - Jul 8, 10:35 UTCJul 8, 18:10 UTC7h 35m
2026-07-07 CSZ865 - Jul 7, 23:20 UTCJul 8, 07:00 UTC7h 40m
2026-07-07 CSZ865 - Jul 7, 18:05 UTCJul 7, 18:25 UTC20m
2026-07-07 CSZ888 - Jul 7, 09:05 UTCJul 7, 09:15 UTC10m
2026-07-06 CSZ888 - Jul 6, 21:45 UTCJul 7, 04:00 UTC6h 15m
2026-07-06 CSZ887 - Jul 6, 12:30 UTCJul 6, 12:55 UTC25m
2026-07-06 CSZ887 - Jul 6, 07:00 UTCJul 6, 07:10 UTC10m
2026-07-06 CSZ9882 - Jul 6, 03:45 UTCJul 6, 05:05 UTC1h 20m
2026-07-05 CSZ9881 SZX → HGH Jul 5, 23:40 UTCJul 5, 23:50 UTC10m
2026-07-05 CSZ9108 - Jul 5, 17:35 UTCJul 5, 18:05 UTC30m
2026-07-05 CSZ9108 - Jul 5, 14:55 UTCJul 5, 15:15 UTC20m
2026-07-05 CSZ9107 - Jul 5, 08:50 UTCJul 5, 09:05 UTC15m
2026-07-05 CSZ9882 - Jul 5, 04:30 UTCJul 5, 04:50 UTC20m
2026-07-04 CSZ9881 SZX → HGH Jul 4, 23:45 UTCJul 4, 23:55 UTC10m
2026-07-04 CSZ9241 - Jul 4, 03:10 UTCJul 4, 03:20 UTC10m
2026-07-03 CSZ866 - Jul 3, 10:40 UTCJul 3, 14:05 UTC3h 25m
2026-07-02 CSZ865 - Jul 2, 23:30 UTCJul 3, 07:30 UTC8h 0m
2026-07-02 CSZ865 - Jul 2, 18:25 UTCJul 2, 18:40 UTC15m
2026-07-02 CSZ9242 URC → SZX Jul 2, 14:50 UTCJul 2, 15:00 UTC10m
2026-07-02 CSZ9241 - Jul 2, 03:00 UTCJul 2, 03:15 UTC15m
2026-07-01 CSZ866 - Jul 1, 11:05 UTCJul 1, 18:25 UTC7h 20m
2026-06-30 CSZ865 - Jun 30, 23:25 UTCJul 1, 07:25 UTC8h 0m
2026-06-30 CSZ865 - Jun 30, 18:20 UTCJun 30, 18:35 UTC15m
2026-06-30 CSZ9508 - Jun 30, 15:20 UTCJun 30, 15:40 UTC20m
2026-06-30 CSZ9507 - Jun 30, 09:20 UTCJun 30, 09:30 UTC10m
2026-06-30 CSZ9401 - Jun 30, 00:04 UTCJun 30, 00:20 UTC15m
2026-06-29 CSZ9108 - Jun 29, 13:44 UTCJun 29, 14:04 UTC20m
2026-06-29 CSZ9108 - Jun 29, 11:20 UTCJun 29, 11:45 UTC25m
2026-06-29 CSZ9107 - Jun 29, 07:09 UTCJun 29, 07:25 UTC15m
2026-06-29 CSZ9882 - Jun 29, 04:09 UTCJun 29, 04:25 UTC15m
2026-06-28 CSZ9881 SZX → HGH Jun 28, 23:29 UTCJun 28, 23:39 UTC10m
2026-06-27 CSZ888 - Jun 27, 21:15 UTCJun 28, 03:40 UTC6h 25m
2026-06-27 CSZ887 - Jun 27, 11:39 UTCJun 27, 18:54 UTC7h 15m
2026-06-27 CSZ887 - Jun 27, 06:35 UTCJun 27, 06:44 UTC10m
2026-06-22 CSZ9507 - Jun 22, 09:24 UTCJun 22, 09:34 UTC10m
2026-06-22 CSZ9401 - Jun 22, 00:04 UTCJun 22, 00:20 UTC15m
2026-06-20 CSZ888 - Jun 20, 21:25 UTCJun 20, 23:50 UTC2h 25m
2026-06-20 CSZ887 - Jun 20, 11:34 UTCJun 20, 18:49 UTC7h 15m
2026-06-20 CSZ887 - Jun 20, 06:10 UTCJun 20, 06:29 UTC20m

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 2h 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, CSZ865, CSZ888, CSZ812, CSZ866.