Apparatus

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sensors Mode-S transponder

781535

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-206M · BOEING 737 MAX 8

Hex
781535
Octal
36012465
Decimal
7,869,749
Country
CN
Tail
B-206M
Type
B38M
No current signal · last broadcast Jul 24, 13:00 UTC
Flights observed
260
Distinct callsigns
20
Country
CN
Last broadcast
Jul 24, 13:00 UTC

Last known position

Most recent position reported by Mode-S 781535.

Country allocation

The ICAO 24-bit address 781535 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
CSZ9604 Shenzhen Airlines 16 2026-07-17
CSZ9137 Shenzhen Airlines 11 2026-07-20
CSZ9638 Shenzhen Airlines 10 2026-07-24
CSZ9922 Shenzhen Airlines 8 2026-07-05
CSZ9912 Shenzhen Airlines 8 2026-06-11
CSZ9603 - 8 2026-07-17
CSZ9138 - 8 2026-07-12
CSZ8106 Shenzhen Airlines 8 2026-07-23
CSZ9637 Shenzhen Airlines 7 2026-07-24
CSZ9128 Shenzhen Airlines 7 2026-07-19
CSZ9127 Shenzhen Airlines 7 2026-07-19
CSZ9916 - 6 2026-07-13
CSZ9231 - 6 2026-07-19
CSZ8105 Shenzhen Airlines 6 2026-07-23
CSZ9232 - 5 2026-07-19
CSZ9146 - 5 2026-07-04
CSZ9145 - 5 2026-07-04
CSZ9918 - 4 2026-07-18
CSZ9915 - 4 2026-07-03
CSZ9207 Shenzhen Airlines 4 2026-07-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CSZ9855 SZX → CKG Jul 24, 12:50 UTCJul 24, 13:00 UTC10m
2026-07-24 CSZ9638 CGQ → SZX Jul 24, 09:20 UTCJul 24, 09:45 UTC25m
2026-07-24 CSZ9638 CGQ → SZX Jul 24, 02:30 UTCJul 24, 08:45 UTC6h 15m
2026-07-24 CSZ9637 SZX → CGQ Jul 24, 00:15 UTCJul 24, 00:25 UTC10m
2026-07-23 CSZ8968 NGB → SZX Jul 23, 13:45 UTCJul 23, 14:50 UTC1h 5m
2026-07-23 CSZ8967 SZX → NGB Jul 23, 10:15 UTCJul 23, 10:25 UTC10m
2026-07-23 CSZ8106 BAV → SZX Jul 23, 07:55 UTCJul 23, 08:05 UTC10m
2026-07-23 CSZ8105 SZX → BAV Jul 23, 00:55 UTCJul 23, 05:25 UTC4h 30m
2026-07-22 CSZ8105 SZX → BAV Jul 22, 22:40 UTCJul 22, 22:50 UTC10m
2026-07-22 CSZ9938 CSX → SZX Jul 22, 17:00 UTCJul 22, 17:40 UTC40m
2026-07-22 CSZ8127 SZX → PEK Jul 22, 01:00 UTCJul 22, 01:10 UTC10m
2026-07-21 CSZ9126 TSN → SZX Jul 21, 16:15 UTCJul 21, 16:35 UTC20m
2026-07-21 CSZ9125 SZX → TSN Jul 21, 09:30 UTCJul 21, 09:40 UTC10m
2026-07-20 CSZ9137 SZX → SJW Jul 20, 23:25 UTCJul 20, 23:35 UTC10m
2026-07-20 CSZ9207 SZX → XIY Jul 20, 10:40 UTCJul 20, 10:50 UTC10m
2026-07-20 CSZ8106 BAV → SZX Jul 20, 08:45 UTCJul 20, 09:10 UTC25m
2026-07-20 CSZ8106 BAV → SZX Jul 20, 02:00 UTCJul 20, 06:35 UTC4h 35m
2026-07-19 CSZ9128 HET → SZX Jul 19, 16:10 UTCJul 19, 16:25 UTC15m
2026-07-19 CSZ9127 SZX → HET Jul 19, 09:10 UTCJul 19, 09:20 UTC10m
2026-07-19 CSZ9232 - Jul 19, 07:35 UTCJul 19, 07:45 UTC10m
2026-07-19 CSZ9231 - Jul 19, 00:50 UTCJul 19, 01:00 UTC10m
2026-07-18 CSZ9918 - Jul 18, 08:05 UTCJul 18, 09:20 UTC1h 15m
2026-07-18 CSZ9917 - Jul 18, 02:19 UTCJul 18, 02:29 UTC10m
2026-07-17 CSZ9604 SHE → SZX Jul 17, 18:19 UTCJul 17, 18:40 UTC20m
2026-07-17 CSZ9604 SHE → SZX Jul 17, 12:10 UTCJul 17, 16:04 UTC3h 55m
2026-07-17 CSZ9603 - Jul 17, 09:50 UTCJul 17, 10:05 UTC15m
2026-07-17 CSZ8106 - Jul 17, 08:25 UTCJul 17, 08:35 UTC10m
2026-07-17 CSZ8106 - Jul 17, 01:20 UTCJul 17, 05:55 UTC4h 35m
2026-07-16 CSZ9935 - Jul 16, 08:20 UTCJul 16, 08:30 UTC10m
2026-07-16 CSZ9402 - Jul 16, 06:05 UTCJul 16, 06:15 UTC10m
2026-07-16 CSZ9401 - Jul 16, 00:30 UTCJul 16, 00:45 UTC15m
2026-07-15 CSZ9326 - Jul 15, 15:40 UTCJul 15, 15:55 UTC15m
2026-07-15 CSZ9325 - Jul 15, 12:05 UTCJul 15, 12:15 UTC10m
2026-07-15 CSZ9637 - Jul 15, 02:45 UTCJul 15, 07:00 UTC4h 15m
2026-07-15 CSZ9637 - Jul 15, 00:25 UTCJul 15, 00:35 UTC10m
2026-07-14 CSZ9128 - Jul 14, 15:45 UTCJul 14, 16:00 UTC15m
2026-07-14 CSZ9127 - Jul 14, 09:05 UTCJul 14, 09:15 UTC10m
2026-07-14 - - Jul 14, 05:55 UTCJul 14, 06:05 UTC10m
2026-07-13 CSZ9128 - Jul 13, 15:45 UTCJul 13, 16:00 UTC15m
2026-07-13 CSZ9127 - Jul 13, 09:00 UTCJul 13, 09:15 UTC15m
2026-07-13 CSZ9916 - Jul 13, 00:50 UTCJul 13, 07:25 UTC6h 35m
2026-07-12 CSZ9604 - Jul 12, 16:01 UTCJul 12, 16:25 UTC25m
2026-07-12 CSZ9604 - Jul 12, 10:05 UTCJul 12, 13:50 UTC3h 45m
2026-07-12 CSZ9603 - Jul 12, 07:50 UTCJul 12, 08:01 UTC10m
2026-07-12 CSZ9138 - Jul 12, 05:50 UTCJul 12, 06:10 UTC20m
2026-07-11 CSZ9137 - Jul 11, 23:40 UTCJul 11, 23:50 UTC10m
2026-07-11 CSZ9128 - Jul 11, 15:50 UTCJul 11, 16:05 UTC15m
2026-07-11 CSZ9127 - Jul 11, 09:10 UTCJul 11, 09:25 UTC15m
2026-07-11 CSZ8920 - Jul 11, 06:45 UTCJul 11, 07:10 UTC25m
2026-07-11 CSZ8919 - Jul 11, 00:20 UTCJul 11, 00:35 UTC15m

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-206M page for operator, model, and routing details .

Mode-S 781535 frequently asked

What is Mode-S code 781535?
781535 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-206M.
Where is Mode-S 781535 registered?
Mode-S code 781535 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781535 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 13:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781535, octal 36012465, decimal 7,869,749.
What flights does 781535 operate?
Mode-S 781535 has broadcast 20 distinct callsigns, including CSZ9604, CSZ9137, CSZ9638, CSZ9922, CSZ9912.