Apparatus

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sensors Mode-S transponder

780B1C

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5771 · BOEING 737-800

Hex
780B1C
Octal
36005434
Decimal
7,867,164
Country
CN
Tail
B-5771
Type
B738
No current signal · last broadcast 4d ago
Flights observed
81
Distinct callsigns
20
Country
CN
Last broadcast
4d ago

Last known position

Most recent position reported by Mode-S 780B1C.

Country allocation

The ICAO 24-bit address 780B1C 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
CSZ9938 Shenzhen Airlines 3 2026-05-29
CSZ9805 - 3 2026-06-17
CSZ9804 Shenzhen Airlines 3 2026-05-29
CSZ8538 Shenzhen Airlines 3 2026-06-13
CSZ9937 Shenzhen Airlines 2 2026-05-29
CSZ9816 Shenzhen Airlines 2 2026-05-24
CSZ9813 - 2 2026-06-24
CSZ9451 Shenzhen Airlines 2 2026-05-05
CSZ9159 Shenzhen Airlines 2 2026-06-11
CSZ9151 - 2 2026-06-11
CSZ9098 - 2 2026-06-27
CSZ9097 - 2 2026-06-27
CSZ9096 - 2 2026-06-28
CSZ8698 Shenzhen Airlines 2 2026-04-24
CSZ8536 Shenzhen Airlines 2 2026-04-19
CSZ628 - 2 2026-06-26
CSZ627 - 2 2026-06-26
CSZ121 - 2 2026-06-25
CSZ9920 - 1 2026-07-05
CSZ9919 - 1 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-09 CSZ9389 - Jul 9, 07:45 UTCJul 9, 07:55 UTC10m
2026-07-08 CSZ9342 - Jul 8, 11:40 UTCJul 9, 07:55 UTC20h 15m
2026-07-07 CSZ9348 - Jul 7, 09:55 UTCJul 7, 13:45 UTC3h 50m
2026-07-07 CSZ9397 - Jul 7, 03:10 UTCJul 7, 03:20 UTC10m
2026-07-05 CSZ9920 - Jul 5, 12:50 UTCJul 5, 13:10 UTC20m
2026-07-05 CSZ9919 - Jul 5, 06:15 UTCJul 5, 06:25 UTC10m
2026-07-05 CSZ8926 - Jul 5, 04:45 UTCJul 5, 04:55 UTC10m
2026-07-04 CSZ9530 - Jul 4, 19:25 UTCJul 4, 19:45 UTC20m
2026-07-04 CSZ9529 - Jul 4, 10:45 UTCJul 4, 10:55 UTC10m
2026-07-04 CSZ9132 - Jul 4, 09:10 UTCJul 4, 09:20 UTC10m
2026-07-04 CSZ9131 - Jul 4, 01:10 UTCJul 4, 01:20 UTC10m
2026-06-30 CSZ9133 - Jun 30, 05:10 UTCJun 30, 05:20 UTC10m
2026-06-30 CSZ9854 - Jun 30, 03:15 UTCJun 30, 03:35 UTC20m
2026-06-28 CSZ9096 - Jun 28, 05:29 UTCJun 28, 06:40 UTC1h 10m
2026-06-28 CSZ9096 - Jun 28, 02:34 UTCJun 28, 02:54 UTC20m
2026-06-27 CSZ9098 - Jun 27, 05:10 UTCJun 27, 06:09 UTC1h 0m
2026-06-27 CSZ9097 - Jun 27, 03:40 UTCJun 27, 03:55 UTC15m
2026-06-26 CSZ628 - Jun 26, 06:00 UTCJun 27, 03:09 UTC21h 10m
2026-06-26 CSZ627 - Jun 26, 04:24 UTCJun 26, 04:55 UTC30m
2026-06-25 CSZ122 - Jun 25, 07:34 UTCJun 25, 07:59 UTC25m
2026-06-25 CSZ121 - Jun 25, 05:39 UTCJun 25, 06:09 UTC30m
2026-06-24 CSZ9813 - Jun 24, 12:25 UTCJun 24, 12:34 UTC10m
2026-06-20 CSZ9845 - Jun 20, 04:09 UTCJun 20, 04:20 UTC10m
2026-06-19 CSZ8662 - Jun 19, 17:55 UTCJun 19, 18:14 UTC20m
2026-06-17 CSZ9805 - Jun 17, 03:45 UTCJun 17, 03:55 UTC10m
2026-06-13 CSZ8538 ZUH → WUX Jun 13, 03:50 UTCJun 13, 04:05 UTC15m
2026-06-12 CSZ8538 ZUH → WUX Jun 12, 04:00 UTCJun 12, 04:10 UTC10m
2026-06-11 CSZ9161 PEK → TFU Jun 11, 13:40 UTCJun 11, 13:50 UTC10m
2026-06-11 CSZ9159 PEK → WUX Jun 11, 07:00 UTCJun 11, 07:10 UTC10m
2026-06-11 CSZ9151 - Jun 11, 01:05 UTCJun 11, 01:25 UTC20m
2026-06-01 CSZ8538 ZUH → WUX Jun 1, 03:20 UTCJun 1, 03:35 UTC15m
2026-05-30 CSZ9805 SZX → WUX May 30, 03:55 UTCMay 30, 04:05 UTC10m
2026-05-29 CSZ9938 CSX → SZX May 29, 18:45 UTCMay 29, 19:00 UTC15m
2026-05-29 CSZ9937 SZX → CSX May 29, 10:35 UTCMay 29, 11:00 UTC25m
2026-05-29 CSZ9804 WUX → SZX May 29, 08:45 UTCMay 29, 09:10 UTC25m
2026-05-26 CSZ9148 PEK → CAN May 26, 03:50 UTCMay 26, 04:10 UTC20m
2026-05-24 CSZ9816 SHA → SZX May 24, 03:00 UTCMay 24, 03:20 UTC20m
2026-05-22 CSZ9805 SZX → WUX May 22, 03:40 UTCMay 22, 03:50 UTC10m
2026-05-21 CSZ9938 CSX → SZX May 21, 21:35 UTCMay 21, 21:45 UTC10m
2026-05-06 CSZ9937 SZX → CSX May 6, 10:35 UTCMay 6, 10:45 UTC10m
2026-05-06 CSZ9231 - May 6, 00:31 UTCMay 6, 00:40 UTC10m
2026-05-05 CSZ9848 NKG → SZX May 5, 13:50 UTCMay 5, 14:05 UTC15m
2026-05-05 CSZ9847 SZX → NKG May 5, 08:20 UTCMay 5, 08:30 UTC10m
2026-05-05 CSZ9451 SZX → KMG May 5, 01:30 UTCMay 5, 01:50 UTC20m
2026-05-04 CSZ9604 SHE → SZX May 4, 13:35 UTCMay 4, 13:45 UTC10m
2026-05-04 CSZ9603 SZX → SHE May 4, 07:40 UTCMay 4, 07:50 UTC10m
2026-05-04 CSZ9138 SJW → SZX May 4, 06:00 UTCMay 4, 06:10 UTC10m
2026-05-03 CSZ9137 SZX → SJW May 3, 23:30 UTCMay 3, 23:39 UTC10m
2026-05-03 CSZ9938 CSX → SZX May 3, 18:55 UTCMay 3, 19:05 UTC10m
2026-05-03 CSZ9157 PEK → WUX May 3, 03:05 UTCMay 3, 03:15 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-5771 page for operator, model, and routing details .

Mode-S 780B1C frequently asked

What is Mode-S code 780B1C?
780B1C is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5771.
Where is Mode-S 780B1C registered?
Mode-S code 780B1C is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780B1C broadcasting right now?
No active broadcast right now. Last signal was 4d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780B1C, octal 36005434, decimal 7,867,164.
What flights does 780B1C operate?
Mode-S 780B1C has broadcast 20 distinct callsigns, including CSZ9938, CSZ9805, CSZ9804, CSZ8538, CSZ9937.