Apparatus

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sensors Mode-S transponder

781837

ICAO 24-bit transponder address · allocated to China

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

Hex
781837
Octal
36014067
Decimal
7,870,519
Country
CN
Tail
B-30CL
Type
A20N
No current signal · last broadcast 5h ago
Flights observed
52
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 781837.

Country allocation

The ICAO 24-bit address 781837 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
CSZ9727 Shenzhen Airlines 3 2026-05-22
CSZ9606 Shenzhen Airlines 3 2026-05-27
CSZ9301 Shenzhen Airlines 3 2026-05-28
CSZ9239 Shenzhen Airlines 3 2026-05-26
CSZ9126 Shenzhen Airlines 3 2026-05-27
CSZ9125 Shenzhen Airlines 3 2026-05-27
CSZ9728 Shenzhen Airlines 2 2026-04-22
CSZ9605 Shenzhen Airlines 2 2026-05-26
CSZ9213 Shenzhen Airlines 2 2026-05-30
CSZ8983 - 2 2026-05-28
CSZ8903 Shenzhen Airlines 2 2026-06-03
CSZ9936 Shenzhen Airlines 1 2026-05-19
CSZ9935 Shenzhen Airlines 1 2026-05-19
CSZ9732 Shenzhen Airlines 1 2026-04-17
CSZ9723 - 1 2026-05-20
CSZ9711 Shenzhen Airlines 1 2026-04-24
CSZ9651 Shenzhen Airlines 1 2026-05-07
CSZ9467 Shenzhen Airlines 1 2026-05-18
CSZ9465 Shenzhen Airlines 1 2026-05-16
CSZ9461 Shenzhen Airlines 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-03 CSZ8903 CAN → CGO Jun 3, 00:35 UTCJun 3, 01:30 UTC55m
2026-06-01 CSZ8903 CAN → CGO Jun 1, 00:30 UTCJun 1, 00:40 UTC10m
2026-05-30 CSZ9213 SZX → XIY May 30, 11:35 UTCMay 30, 11:50 UTC15m
2026-05-29 CSZ9305 SZX → CGO May 29, 14:45 UTCMay 29, 14:55 UTC10m
2026-05-29 CSZ9406 CTU → SZX May 29, 10:15 UTCMay 29, 10:25 UTC10m
2026-05-29 CSZ9405 SZX → CTU May 29, 04:20 UTCMay 29, 04:35 UTC15m
2026-05-28 CSZ8983 - May 28, 08:30 UTCMay 28, 09:25 UTC55m
2026-05-28 CSZ9301 SZX → CGO May 28, 00:05 UTCMay 28, 00:20 UTC15m
2026-05-27 CSZ9126 TSN → SZX May 27, 13:45 UTCMay 27, 14:00 UTC15m
2026-05-27 CSZ9125 SZX → TSN May 27, 06:40 UTCMay 27, 06:55 UTC15m
2026-05-27 CSZ9606 JDZ → CAN May 27, 04:55 UTCMay 27, 05:09 UTC15m
2026-05-26 CSZ9606 JDZ → CAN May 26, 13:50 UTCMay 27, 02:29 UTC12h 40m
2026-05-26 CSZ9605 CAN → JDZ May 26, 11:30 UTCMay 26, 11:44 UTC15m
2026-05-26 CSZ9240 URC → SZX May 26, 09:15 UTCMay 26, 09:25 UTC10m
2026-05-26 CSZ9239 SZX → URC May 26, 02:35 UTCMay 26, 02:44 UTC10m
2026-05-25 CSZ9126 TSN → SZX May 25, 14:05 UTCMay 25, 14:15 UTC10m
2026-05-25 CSZ9125 SZX → TSN May 25, 07:20 UTCMay 25, 07:30 UTC10m
2026-05-25 CSZ9606 JDZ → CAN May 25, 05:00 UTCMay 25, 05:10 UTC10m
2026-05-22 CSZ9727 CGO → HAK May 22, 06:45 UTCMay 22, 07:00 UTC15m
2026-05-20 CSZ9723 - May 20, 16:50 UTCMay 21, 06:45 UTC13h 55m
2026-05-20 CSZ9239 SZX → URC May 20, 02:30 UTCMay 20, 02:40 UTC10m
2026-05-19 CSZ9936 TSN → SZX May 19, 13:15 UTCMay 19, 13:25 UTC10m
2026-05-19 CSZ9935 SZX → TSN May 19, 06:30 UTCMay 19, 06:45 UTC15m
2026-05-18 CSZ9467 SZX → CKG May 18, 11:10 UTCMay 18, 11:20 UTC10m
2026-05-18 CSZ9132 TYN → SZX May 18, 08:15 UTCMay 18, 08:25 UTC10m
2026-05-18 CSZ9131 SZX → TYN May 18, 01:55 UTCMay 18, 02:05 UTC10m
2026-05-16 CSZ9211 SZX → XIY May 16, 23:10 UTCMay 16, 23:25 UTC15m
2026-05-16 CSZ9465 SZX → CKG May 16, 09:01 UTCMay 16, 09:10 UTC10m
2026-05-16 CSZ9461 CKG → NKG May 16, 02:00 UTCMay 16, 02:15 UTC15m
2026-05-16 CSZ9316 HAK → SZX May 16, 00:30 UTCMay 16, 00:45 UTC15m
2026-05-15 CSZ8993 CAN → HAK May 15, 15:20 UTCMay 15, 15:35 UTC15m
2026-05-15 CSZ8991 CAN → HAK May 15, 08:55 UTCMay 15, 09:10 UTC15m
2026-05-07 CSZ9651 CAN → SHE May 7, 14:20 UTCMay 8, 01:40 UTC11h 20m
2026-04-29 CSZ8990 - Apr 29, 16:10 UTCApr 29, 16:20 UTC10m
2026-04-28 CSZ9213 SZX → XIY Apr 28, 11:35 UTCApr 28, 11:45 UTC10m
2026-04-28 CSZ9301 SZX → CGO Apr 28, 00:20 UTCApr 28, 00:30 UTC10m
2026-04-27 CSZ8983 - Apr 27, 09:25 UTCApr 27, 09:40 UTC15m
2026-04-27 CSZ9301 SZX → CGO Apr 27, 00:15 UTCApr 27, 00:30 UTC15m
2026-04-26 CSZ8970 - Apr 26, 15:40 UTCApr 26, 15:50 UTC10m
2026-04-26 CSZ8969 - Apr 26, 11:15 UTCApr 26, 11:30 UTC15m
2026-04-26 CSZ9239 SZX → URC Apr 26, 02:25 UTCApr 26, 02:35 UTC10m
2026-04-25 CSZ9126 TSN → SZX Apr 25, 13:30 UTCApr 25, 13:40 UTC10m
2026-04-25 CSZ9125 SZX → TSN Apr 25, 06:40 UTCApr 25, 06:55 UTC15m
2026-04-24 CSZ9711 SHE → HFE Apr 24, 02:15 UTCApr 24, 02:25 UTC10m
2026-04-22 CSZ9728 CGO → SHE Apr 22, 13:40 UTCApr 23, 02:05 UTC12h 25m
2026-04-22 CSZ9727 CGO → HAK Apr 22, 07:00 UTCApr 23, 02:05 UTC19h 4m
2026-04-21 CSZ9728 CGO → SHE Apr 21, 13:50 UTCApr 22, 13:45 UTC23h 55m
2026-04-21 CSZ9727 CGO → HAK Apr 21, 06:45 UTCApr 21, 13:50 UTC7h 5m
2026-04-19 - - Apr 19, 08:10 UTCApr 19, 08:20 UTC10m
2026-04-17 CSZ9732 TAO → SZX Apr 17, 08:50 UTCApr 17, 09:10 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-30CL page for operator, model, and routing details .

Mode-S 781837 frequently asked

What is Mode-S code 781837?
781837 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-30CL.
Where is Mode-S 781837 registered?
Mode-S code 781837 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781837 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 781837, octal 36014067, decimal 7,870,519.
What flights does 781837 operate?
Mode-S 781837 has broadcast 20 distinct callsigns, including CSZ9727, CSZ9606, CSZ9301, CSZ9239, CSZ9126.