Apparatus

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sensors Mode-S transponder

7809D8

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5737 · BOEING 737-800

Hex
7809D8
Octal
36004730
Decimal
7,866,840
Country
CN
Tail
B-5737
Type
B738
No current signal · last broadcast Jul 26, 13:25 UTC
Flights observed
144
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:25 UTC

Last known position

Most recent position reported by Mode-S 7809D8.

Country allocation

The ICAO 24-bit address 7809D8 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
CSZ9816 Shenzhen Airlines 4 2026-07-22
CSZ9098 Shenzhen Airlines 4 2026-06-05
CSZ9097 Shenzhen Airlines 4 2026-06-05
CSZ9916 Shenzhen Airlines 3 2026-07-25
CSZ9814 Shenzhen Airlines 3 2026-05-06
CSZ9397 - 3 2026-06-30
CSZ9368 - 3 2026-07-03
CSZ9330 - 3 2026-07-19
CSZ9329 Shenzhen Airlines 3 2026-07-19
CSZ9151 - 3 2026-05-04
CSZ9096 Shenzhen Airlines 3 2026-05-01
CSZ121 Shenzhen Airlines 3 2026-06-11
CSZ9944 - 2 2026-07-08
CSZ9943 - 2 2026-07-08
CSZ9922 - 2 2026-07-10
CSZ9921 - 2 2026-07-10
CSZ9808 Shenzhen Airlines 2 2026-05-17
CSZ9807 - 2 2026-07-22
CSZ9806 Shenzhen Airlines 2 2026-07-24
CSZ9639 Shenzhen Airlines 2 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ9134 TYN → SZX Jul 26, 13:15 UTCJul 26, 13:25 UTC10m
2026-07-25 CSZ9916 TAO → SZX Jul 25, 07:45 UTCJul 25, 08:05 UTC20m
2026-07-25 CSZ9916 TAO → SZX Jul 25, 06:25 UTCJul 25, 07:10 UTC45m
2026-07-24 CSZ8928 - Jul 24, 17:15 UTCJul 24, 17:25 UTC10m
2026-07-24 CSZ8927 - Jul 24, 11:35 UTCJul 24, 11:50 UTC15m
2026-07-24 CSZ9806 WUX → SZX Jul 24, 09:40 UTCJul 24, 10:05 UTC25m
2026-07-23 CSZ9171 PEK → NTG Jul 23, 14:05 UTCJul 23, 14:20 UTC15m
2026-07-23 CSZ8698 ZUH → NTG Jul 23, 07:50 UTCJul 23, 08:00 UTC10m
2026-07-23 CSZ8697 NTG → ZUH Jul 23, 05:45 UTCJul 23, 06:10 UTC25m
2026-07-23 CSZ8661 SZX → NTG Jul 23, 01:10 UTCJul 23, 01:20 UTC10m
2026-07-22 CSZ8970 - Jul 22, 15:10 UTCJul 22, 15:55 UTC45m
2026-07-22 CSZ8969 - Jul 22, 11:35 UTCJul 22, 11:45 UTC10m
2026-07-22 CSZ9807 - Jul 22, 04:10 UTCJul 22, 04:20 UTC10m
2026-07-22 CSZ9816 SHA → SZX Jul 22, 02:15 UTCJul 22, 03:00 UTC45m
2026-07-21 CSZ9823 SZX → CTU Jul 21, 08:00 UTCJul 21, 08:10 UTC10m
2026-07-19 CSZ9206 XIY → SZX Jul 19, 14:25 UTCJul 19, 14:35 UTC10m
2026-07-19 CSZ9205 - Jul 19, 07:45 UTCJul 19, 08:00 UTC15m
2026-07-19 CSZ9330 - Jul 19, 06:00 UTCJul 19, 06:15 UTC15m
2026-07-19 CSZ9329 CGO → SZX Jul 19, 01:15 UTCJul 19, 01:25 UTC10m
2026-07-18 CSZ9234 - Jul 18, 15:45 UTCJul 18, 15:55 UTC10m
2026-07-18 CSZ9233 - Jul 18, 09:00 UTCJul 18, 09:10 UTC10m
2026-07-18 CSZ9330 - Jul 18, 06:10 UTCJul 18, 06:25 UTC15m
2026-07-18 CSZ9329 CGO → SZX Jul 18, 01:54 UTCJul 18, 02:05 UTC10m
2026-07-17 CSZ208 - Jul 17, 20:55 UTCJul 17, 21:15 UTC20m
2026-07-17 CSZ208 - Jul 17, 19:05 UTCJul 17, 19:35 UTC30m
2026-07-17 CSZ207 - Jul 17, 15:35 UTCJul 17, 17:25 UTC1h 50m
2026-07-17 CSZ9526 - Jul 17, 13:35 UTCJul 17, 13:45 UTC10m
2026-07-17 CSZ9525 SZX → PVG Jul 17, 07:40 UTCJul 17, 07:50 UTC10m
2026-07-17 CSZ9330 - Jul 17, 05:25 UTCJul 17, 05:39 UTC15m
2026-07-17 CSZ9329 - Jul 17, 01:05 UTCJul 17, 01:15 UTC10m
2026-07-16 CSZ8662 - Jul 16, 15:00 UTCJul 16, 15:40 UTC40m
2026-07-13 CSZ9861 - Jul 13, 23:45 UTCJul 14, 00:00 UTC15m
2026-07-13 CSZ9157 - Jul 13, 03:05 UTCJul 13, 03:20 UTC15m
2026-07-11 CSZ9155 - Jul 11, 09:55 UTCJul 11, 10:20 UTC25m
2026-07-11 CSZ9803 - Jul 11, 01:20 UTCJul 11, 01:30 UTC10m
2026-07-10 CSZ9922 - Jul 10, 14:00 UTCJul 10, 14:45 UTC45m
2026-07-10 CSZ9921 - Jul 10, 08:10 UTCJul 10, 08:20 UTC10m
2026-07-10 CSZ9461 - Jul 10, 01:30 UTCJul 10, 01:45 UTC15m
2026-07-09 CSZ8918 - Jul 9, 16:40 UTCJul 9, 17:00 UTC20m
2026-07-09 CSZ8917 - Jul 9, 10:10 UTCJul 9, 10:25 UTC15m
2026-07-09 CSZ8932 - Jul 9, 08:40 UTCJul 9, 08:55 UTC15m
2026-07-09 CSZ8931 - Jul 9, 00:10 UTCJul 9, 00:25 UTC15m
2026-07-08 CSZ9944 - Jul 8, 09:05 UTCJul 8, 09:15 UTC10m
2026-07-08 CSZ9943 - Jul 8, 01:05 UTCJul 8, 01:15 UTC10m
2026-07-07 CSZ9465 - Jul 7, 16:20 UTCJul 7, 16:30 UTC10m
2026-07-07 CSZ9916 - Jul 7, 01:20 UTCJul 7, 07:45 UTC6h 25m
2026-07-06 CSZ9931 - Jul 6, 05:20 UTCJul 6, 05:30 UTC10m
2026-07-06 CSZ9816 - Jul 6, 02:30 UTCJul 6, 03:35 UTC1h 5m
2026-07-03 CSZ9368 - Jul 3, 09:00 UTCJul 3, 12:20 UTC3h 20m
2026-06-30 CSZ9397 - Jun 30, 23:35 UTCJun 30, 23:50 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-5737 page for operator, model, and routing details .

Mode-S 7809D8 frequently asked

What is Mode-S code 7809D8?
7809D8 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5737.
Where is Mode-S 7809D8 registered?
Mode-S code 7809D8 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7809D8 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 13:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7809D8, octal 36004730, decimal 7,866,840.
What flights does 7809D8 operate?
Mode-S 7809D8 has broadcast 20 distinct callsigns, including CSZ9816, CSZ9098, CSZ9097, CSZ9916, CSZ9814.