Apparatus

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sensors Mode-S transponder

780B23

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5778 · BOEING 737-800

Hex
780B23
Octal
36005443
Decimal
7,867,171
Country
CN
Tail
B-5778
Type
B738
No current signal · last broadcast Jul 25, 12:00 UTC
Flights observed
169
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 12:00 UTC

Last known position

Most recent position reported by Mode-S 780B23.

Country allocation

The ICAO 24-bit address 780B23 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
CSZ9096 Shenzhen Airlines 7 2026-07-23
CSZ9095 Shenzhen Airlines 7 2026-07-23
CSZ9098 - 6 2026-07-21
CSZ9097 Shenzhen Airlines 6 2026-07-21
CSZ9816 - 5 2026-07-16
CSZ8966 - 4 2026-07-14
CSZ634 Shenzhen Airlines 4 2026-04-14
CSZ9807 - 3 2026-07-16
CSZ9803 - 3 2026-06-30
CSZ9463 - 3 2026-06-24
CSZ9151 - 3 2026-07-17
CSZ208 - 3 2026-07-08
CSZ122 Shenzhen Airlines 3 2026-07-24
CSZ121 - 3 2026-06-19
CSZ9945 - 2 2026-07-13
CSZ9922 - 2 2026-07-09
CSZ9899 - 2 2026-07-09
CSZ9883 - 2 2026-07-10
CSZ9815 - 2 2026-07-20
CSZ9814 - 2 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CSZ9119 PEK → CAN Jul 25, 11:40 UTCJul 25, 12:00 UTC20m
2026-07-25 CSZ9120 CAN → PEK Jul 25, 10:00 UTCJul 25, 10:10 UTC10m
2026-07-24 CSZ122 HAN → CAN Jul 24, 07:35 UTCJul 24, 07:45 UTC10m
2026-07-23 CSZ9096 HKG → WUX Jul 23, 04:50 UTCJul 23, 05:50 UTC1h 0m
2026-07-23 CSZ9095 WUX → HKG Jul 23, 02:05 UTCJul 23, 02:45 UTC40m
2026-07-22 CSZ9157 PEK → WUX Jul 22, 03:05 UTCJul 22, 03:15 UTC10m
2026-07-21 CSZ9098 - Jul 21, 05:45 UTCJul 21, 06:45 UTC1h 0m
2026-07-21 CSZ9097 SZX → KIX Jul 21, 03:25 UTCJul 21, 04:00 UTC35m
2026-07-20 CSZ9815 - Jul 20, 22:45 UTCJul 20, 23:00 UTC15m
2026-07-20 CSZ8938 YIH → SZX Jul 20, 17:05 UTCJul 20, 17:15 UTC10m
2026-07-20 CSZ8937 SZX → YIH Jul 20, 11:15 UTCJul 20, 11:25 UTC10m
2026-07-20 CSZ9302 CGO → SZX Jul 20, 06:40 UTCJul 20, 07:10 UTC30m
2026-07-20 CSZ9301 SZX → CGO Jul 20, 00:30 UTCJul 20, 00:40 UTC10m
2026-07-19 CSZ9526 - Jul 19, 15:35 UTCJul 19, 15:45 UTC10m
2026-07-19 CSZ9525 SZX → PVG Jul 19, 10:10 UTCJul 19, 10:20 UTC10m
2026-07-19 CSZ9502 - Jul 19, 05:25 UTCJul 19, 06:10 UTC45m
2026-07-19 CSZ9501 SZX → SHA Jul 19, 00:20 UTCJul 19, 00:30 UTC10m
2026-07-18 CSZ9804 - Jul 18, 09:15 UTCJul 18, 09:30 UTC15m
2026-07-17 CSZ9161 - Jul 17, 14:00 UTCJul 17, 14:10 UTC10m
2026-07-17 CSZ9151 - Jul 17, 01:05 UTCJul 17, 01:25 UTC20m
2026-07-16 CSZ9807 - Jul 16, 05:20 UTCJul 16, 05:30 UTC10m
2026-07-16 CSZ9816 - Jul 16, 03:00 UTCJul 16, 03:20 UTC20m
2026-07-14 CSZ9525 - Jul 14, 09:35 UTCJul 14, 09:45 UTC10m
2026-07-14 CSZ8966 - Jul 14, 05:10 UTCJul 14, 05:55 UTC45m
2026-07-13 CSZ9411 - Jul 13, 11:15 UTCJul 13, 11:30 UTC15m
2026-07-13 CSZ9945 - Jul 13, 04:10 UTCJul 13, 04:20 UTC10m
2026-07-13 CSZ9816 - Jul 13, 01:50 UTCJul 13, 02:25 UTC35m
2026-07-10 CSZ9534 - Jul 10, 14:05 UTCJul 10, 14:20 UTC15m
2026-07-10 CSZ9884 - Jul 10, 07:25 UTCJul 10, 07:45 UTC20m
2026-07-10 CSZ9883 - Jul 10, 02:55 UTCJul 10, 03:05 UTC10m
2026-07-09 CSZ9922 - Jul 9, 14:55 UTCJul 9, 15:40 UTC45m
2026-07-09 CSZ9921 - Jul 9, 08:05 UTCJul 9, 08:20 UTC15m
2026-07-09 CSZ9899 - Jul 9, 00:40 UTCJul 9, 06:55 UTC6h 15m
2026-07-08 CSZ208 - Jul 8, 21:50 UTCJul 8, 22:10 UTC20m
2026-07-08 CSZ208 - Jul 8, 20:15 UTCJul 8, 20:45 UTC30m
2026-07-08 CSZ207 - Jul 8, 16:50 UTCJul 8, 18:40 UTC1h 50m
2026-07-08 CSZ9890 - Jul 8, 14:40 UTCJul 8, 15:20 UTC40m
2026-07-08 CSZ9889 - Jul 8, 10:45 UTCJul 8, 10:55 UTC10m
2026-07-08 CSZ8932 - Jul 8, 08:15 UTCJul 8, 08:25 UTC10m
2026-07-07 CSZ8931 - Jul 7, 23:55 UTCJul 8, 00:05 UTC10m
2026-07-07 CSZ9945 - Jul 7, 08:30 UTCJul 7, 08:40 UTC10m
2026-07-06 CSZ9410 - Jul 6, 19:15 UTCJul 6, 19:25 UTC10m
2026-07-06 CSZ9409 - Jul 6, 13:00 UTCJul 6, 13:15 UTC15m
2026-07-06 CSZ9883 - Jul 6, 02:10 UTCJul 6, 02:20 UTC10m
2026-07-05 CSZ8966 - Jul 5, 06:25 UTCJul 5, 06:45 UTC20m
2026-07-04 CSZ9604 - Jul 4, 20:15 UTCJul 4, 20:35 UTC20m
2026-07-04 CSZ9604 - Jul 4, 11:40 UTCJul 4, 17:50 UTC6h 10m
2026-07-04 CSZ9603 - Jul 4, 09:20 UTCJul 4, 09:30 UTC10m
2026-07-04 CSZ8966 - Jul 4, 07:20 UTCJul 4, 07:50 UTC30m
2026-07-04 CSZ8965 - Jul 4, 01:10 UTCJul 4, 01:20 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-5778 page for operator, model, and routing details .

Mode-S 780B23 frequently asked

What is Mode-S code 780B23?
780B23 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5778.
Where is Mode-S 780B23 registered?
Mode-S code 780B23 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780B23 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 12:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780B23, octal 36005443, decimal 7,867,171.
What flights does 780B23 operate?
Mode-S 780B23 has broadcast 20 distinct callsigns, including CSZ9096, CSZ9095, CSZ9098, CSZ9097, CSZ9816.