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 1d ago
Flights observed
113
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

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
CSZ9098 Shenzhen Airlines 4 2026-06-05
CSZ9097 Shenzhen Airlines 4 2026-06-05
CSZ9816 - 3 2026-07-06
CSZ9814 Shenzhen Airlines 3 2026-05-06
CSZ9397 - 3 2026-06-30
CSZ9368 - 3 2026-07-03
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
CSZ9639 Shenzhen Airlines 2 2026-04-21
CSZ9601 - 2 2026-06-21
CSZ9465 - 2 2026-07-07
CSZ9461 - 2 2026-07-10
CSZ9152 - 2 2026-05-04
CSZ9095 Shenzhen Airlines 2 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-30 CSZ8928 - Jun 30, 18:00 UTCJun 30, 18:20 UTC20m
2026-06-30 CSZ8927 - Jun 30, 11:40 UTCJun 30, 11:50 UTC10m
2026-06-30 CSZ9806 - Jun 30, 09:35 UTCJun 30, 10:00 UTC25m
2026-06-30 CSZ9805 - Jun 30, 04:25 UTCJun 30, 04:35 UTC10m
2026-06-27 CSZ9368 - Jun 27, 08:35 UTCJun 27, 12:25 UTC3h 50m
2026-06-25 CSZ9397 - Jun 25, 01:04 UTCJun 25, 01:14 UTC10m
2026-06-24 CSZ634 - Jun 24, 06:50 UTCJun 24, 07:34 UTC45m
2026-06-24 CSZ633 - Jun 24, 04:24 UTCJun 24, 05:15 UTC50m
2026-06-23 CSZ9522 - Jun 23, 13:24 UTCJun 23, 13:34 UTC10m
2026-06-23 CSZ9521 - Jun 23, 08:09 UTCJun 23, 08:25 UTC15m
2026-06-23 CSZ9944 - Jun 23, 06:09 UTCJun 23, 06:24 UTC15m
2026-06-23 CSZ9943 - Jun 23, 01:50 UTCJun 23, 01:59 UTC10m
2026-06-22 CSZ9922 NTG → SZX Jun 22, 13:49 UTCJun 22, 14:19 UTC30m
2026-06-22 CSZ9921 - Jun 22, 07:25 UTCJun 22, 07:40 UTC15m
2026-06-22 CSZ8966 - Jun 22, 05:24 UTCJun 22, 05:44 UTC20m
2026-06-22 CSZ8965 - Jun 22, 00:55 UTCJun 22, 01:05 UTC10m
2026-06-21 CSZ9601 - Jun 21, 05:40 UTCJun 21, 09:55 UTC4h 15m
2026-06-21 CSZ9601 - Jun 21, 03:19 UTCJun 21, 03:30 UTC10m
2026-06-21 CSZ9952 - Jun 21, 00:45 UTCJun 21, 00:55 UTC10m
2026-06-20 CSZ9886 - Jun 20, 08:49 UTCJun 20, 09:09 UTC20m
2026-06-20 CSZ9885 - Jun 20, 03:49 UTCJun 20, 03:59 UTC10m
2026-06-19 CSZ9342 - Jun 19, 11:54 UTCJun 19, 12:49 UTC55m
2026-06-13 CSZ8662 - Jun 13, 15:40 UTCJun 13, 15:50 UTC10m
2026-06-12 CSZ9713 SHE → HFE Jun 12, 04:10 UTCJun 12, 07:25 UTC3h 15m
2026-06-11 CSZ122 HAN → CAN Jun 11, 07:05 UTCJun 12, 04:10 UTC21h 6m
2026-06-11 CSZ121 CAN → HAN Jun 11, 03:55 UTCJun 11, 05:05 UTC1h 10m
2026-06-09 CSZ9714 HFE → SHE Jun 9, 04:05 UTCJun 9, 07:05 UTC3h 0m
2026-06-06 CSZ122 HAN → CAN Jun 6, 07:55 UTCJun 6, 08:20 UTC25m
2026-06-06 CSZ121 CAN → HAN Jun 6, 04:55 UTCJun 6, 05:50 UTC55m
2026-06-05 CSZ9098 KIX → SZX Jun 5, 05:45 UTCJun 5, 06:05 UTC20m
2026-06-05 CSZ9097 SZX → KIX Jun 5, 03:55 UTCJun 5, 04:15 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-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 1d ago.
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 CSZ9098, CSZ9097, CSZ9816, CSZ9814, CSZ9397.