Apparatus

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sensors Mode-S transponder

781836

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-30CK · AIRBUS A-320neo

Hex
781836
Octal
36014066
Decimal
7,870,518
Country
CN
Tail
B-30CK
Type
A20N
No current signal · last broadcast 7h ago
Flights observed
136
Distinct callsigns
20
Country
CN
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 781836.

Country allocation

The ICAO 24-bit address 781836 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
CSZ9723 - 12 2026-06-16
CSZ8983 - 10 2026-07-01
CSZ9301 - 7 2026-07-02
CSZ9302 - 6 2026-07-02
CSZ9235 - 6 2026-07-09
CSZ9126 - 6 2026-06-30
CSZ9623 - 4 2026-07-03
CSZ9605 Shenzhen Airlines 4 2026-06-08
CSZ9457 - 4 2026-07-02
CSZ9233 - 4 2026-07-09
CSZ9125 - 4 2026-06-30
CSZ9848 Shenzhen Airlines 3 2026-05-09
CSZ9711 Shenzhen Airlines 3 2026-06-11
CSZ9606 - 3 2026-06-17
CSZ9239 Shenzhen Airlines 3 2026-06-08
CSZ9236 - 3 2026-07-03
CSZ9203 - 3 2026-06-18
CSZ9847 Shenzhen Airlines 2 2026-04-28
CSZ9747 Shenzhen Airlines 2 2026-04-24
CSZ9727 Shenzhen Airlines 2 2026-06-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CSZ9672 - Jul 14, 09:25 UTCJul 14, 14:15 UTC4h 50m
2026-07-14 - - Jul 14, 05:20 UTCJul 14, 05:30 UTC10m
2026-07-13 CSZ8309 - Jul 13, 10:10 UTCJul 14, 03:05 UTC16h 55m
2026-07-10 CSZ9849 - Jul 10, 10:20 UTCJul 10, 10:30 UTC10m
2026-07-09 CSZ9235 - Jul 9, 23:30 UTCJul 9, 23:40 UTC10m
2026-07-09 CSZ9234 - Jul 9, 15:55 UTCJul 9, 16:05 UTC10m
2026-07-09 CSZ9233 - Jul 9, 08:40 UTCJul 9, 08:50 UTC10m
2026-07-09 CSZ9330 - Jul 9, 06:55 UTCJul 9, 07:15 UTC20m
2026-07-09 CSZ9329 - Jul 9, 01:15 UTCJul 9, 01:25 UTC10m
2026-07-08 CSZ9938 - Jul 8, 20:20 UTCJul 8, 20:45 UTC25m
2026-07-06 CSZ9713 - Jul 6, 04:15 UTCJul 6, 07:30 UTC3h 15m
2026-07-05 CSZ9672 - Jul 5, 15:10 UTCJul 5, 15:35 UTC25m
2026-07-03 CSZ9623 - Jul 3, 14:55 UTCJul 3, 15:05 UTC10m
2026-07-03 CSZ9623 - Jul 3, 12:25 UTCJul 3, 12:40 UTC15m
2026-07-03 CSZ9236 - Jul 3, 07:05 UTCJul 3, 07:20 UTC15m
2026-07-02 CSZ9235 - Jul 2, 23:00 UTCJul 2, 23:10 UTC10m
2026-07-02 CSZ9457 - Jul 2, 08:15 UTCJul 2, 08:25 UTC10m
2026-07-02 CSZ9302 - Jul 2, 06:41 UTCJul 2, 06:51 UTC10m
2026-07-02 CSZ9301 - Jul 2, 00:25 UTCJul 2, 00:35 UTC10m
2026-07-01 CSZ8983 - Jul 1, 08:50 UTCJul 1, 09:00 UTC10m
2026-07-01 CSZ8983 - Jul 1, 08:00 UTCJul 1, 08:15 UTC15m
2026-07-01 CSZ9302 - Jul 1, 06:15 UTCJul 1, 06:40 UTC25m
2026-07-01 CSZ9301 - Jul 1, 00:05 UTCJul 1, 00:20 UTC15m
2026-06-30 CSZ9126 - Jun 30, 17:20 UTCJun 30, 17:30 UTC10m
2026-06-30 CSZ9126 - Jun 30, 14:45 UTCJun 30, 15:00 UTC15m
2026-06-30 CSZ9125 - Jun 30, 06:40 UTCJun 30, 07:00 UTC20m
2026-06-29 CSZ8979 - Jun 29, 23:34 UTCJun 30, 03:55 UTC4h 21m
2026-06-29 CSZ8983 - Jun 29, 08:50 UTCJun 29, 09:14 UTC25m
2026-06-29 CSZ8983 - Jun 29, 08:04 UTCJun 29, 08:19 UTC15m
2026-06-28 CSZ9235 - Jun 28, 23:20 UTCJun 28, 23:29 UTC10m
2026-06-28 CSZ9394 SHE → CGO Jun 28, 15:24 UTCJun 28, 15:49 UTC25m
2026-06-28 CSZ9393 CGO → SHE Jun 28, 10:35 UTCJun 28, 10:50 UTC15m
2026-06-28 CSZ9302 - Jun 28, 07:44 UTCJun 28, 08:09 UTC25m
2026-06-28 CSZ9301 - Jun 28, 00:04 UTCJun 28, 00:25 UTC20m
2026-06-27 CSZ8984 - Jun 27, 15:05 UTCJun 27, 15:14 UTC10m
2026-06-27 CSZ8983 - Jun 27, 08:05 UTCJun 27, 13:49 UTC5h 45m
2026-06-27 CSZ9302 - Jun 27, 06:05 UTCJun 27, 06:25 UTC20m
2026-06-27 CSZ9301 - Jun 27, 00:14 UTCJun 27, 00:29 UTC15m
2026-06-26 CSZ8984 - Jun 26, 16:00 UTCJun 26, 16:09 UTC10m
2026-06-26 CSZ8983 - Jun 26, 09:39 UTCJun 26, 15:05 UTC5h 25m
2026-06-26 CSZ9301 - Jun 26, 00:20 UTCJun 26, 00:30 UTC10m
2026-06-25 CSZ9467 - Jun 25, 12:54 UTCJun 25, 13:45 UTC50m
2026-06-25 CSZ9204 - Jun 25, 10:30 UTCJun 25, 10:45 UTC15m
2026-06-18 CSZ9203 - Jun 18, 04:15 UTCJun 18, 04:25 UTC10m
2026-06-17 CSZ9126 TSN → SZX Jun 17, 14:20 UTCJun 17, 14:35 UTC15m
2026-06-17 CSZ9125 - Jun 17, 06:55 UTCJun 17, 07:05 UTC10m
2026-06-17 CSZ9606 - Jun 17, 04:35 UTCJun 17, 05:00 UTC25m
2026-06-16 CSZ9723 - Jun 16, 02:09 UTCJun 16, 11:05 UTC8h 55m
2026-06-15 CSZ9723 - Jun 15, 11:45 UTCJun 16, 11:05 UTC23h 20m
2026-06-15 CSZ9723 - Jun 15, 06:35 UTCJun 16, 02:54 UTC20h 20m

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-30CK page for operator, model, and routing details .

Mode-S 781836 frequently asked

What is Mode-S code 781836?
781836 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30CK.
Where is Mode-S 781836 registered?
Mode-S code 781836 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781836 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781836, octal 36014066, decimal 7,870,518.
What flights does 781836 operate?
Mode-S 781836 has broadcast 20 distinct callsigns, including CSZ9723, CSZ8983, CSZ9301, CSZ9302, CSZ9235.