Apparatus

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sensors Mode-S transponder

78238F

ICAO 24-bit transponder address · allocated to China

Hex
78238F
Octal
36021617
Decimal
7,873,423
Country
CN
Broadcasting now · callsign CSZ8954 · 2,625 ft
Flights observed
169
Distinct callsigns
20
Country
CN
Last broadcast
23d ago

Current position

78238F is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 78238F 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
CSZ9321 - 10 2026-07-14
CSZ9729 - 9 2026-07-16
CSZ310 Shenzhen Airlines 6 2026-07-24
CSZ309 Shenzhen Airlines 6 2026-07-24
CSZ9329 - 4 2026-07-04
CSZ9315 - 4 2026-07-21
CSZ307 - 4 2026-07-19
CSZ228 Shenzhen Airlines 4 2026-07-23
CSZ9621 Shenzhen Airlines 3 2026-06-03
CSZ9526 Shenzhen Airlines 3 2026-06-06
CSZ9409 - 3 2026-06-23
CSZ9330 Shenzhen Airlines 3 2026-07-25
CSZ9316 Shenzhen Airlines 3 2026-07-23
CSZ308 - 3 2026-07-19
CSZ306 - 3 2026-07-19
CSZ227 Shenzhen Airlines 3 2026-07-22
CSZ9894 Shenzhen Airlines 2 2026-07-24
CSZ9893 Shenzhen Airlines 2 2026-07-24
CSZ9850 Shenzhen Airlines 2 2026-06-09
CSZ9844 Shenzhen Airlines 2 2026-06-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ9615 - Jul 26, 06:05 UTCJul 26, 06:15 UTC10m
2026-07-25 CSZ9521 SZX → PVG Jul 25, 06:55 UTCJul 25, 07:05 UTC10m
2026-07-25 CSZ9330 SZX → CGO Jul 25, 05:25 UTCJul 25, 05:35 UTC10m
2026-07-24 CSZ9894 HFE → SZX Jul 24, 14:35 UTCJul 24, 15:15 UTC40m
2026-07-24 CSZ9893 SZX → WUH Jul 24, 10:15 UTCJul 24, 10:30 UTC15m
2026-07-24 CSZ310 BKK → SZX Jul 24, 07:45 UTCJul 24, 07:55 UTC10m
2026-07-24 CSZ310 BKK → SZX Jul 24, 05:30 UTCJul 24, 06:00 UTC30m
2026-07-24 CSZ309 SZX → BKK Jul 24, 03:25 UTCJul 24, 04:05 UTC40m
2026-07-24 CSZ309 SZX → BKK Jul 24, 01:35 UTCJul 24, 01:50 UTC15m
2026-07-23 CSZ9316 HAK → SZX Jul 23, 23:30 UTCJul 23, 23:55 UTC25m
2026-07-23 CSZ228 SIN → SZX Jul 23, 03:55 UTCJul 23, 15:25 UTC11h 30m
2026-07-23 CSZ228 SIN → SZX Jul 23, 01:40 UTCJul 23, 01:50 UTC10m
2026-07-22 CSZ228 SIN → SZX Jul 22, 23:30 UTCJul 22, 23:45 UTC15m
2026-07-22 CSZ228 SIN → SZX Jul 22, 20:05 UTCJul 22, 20:30 UTC25m
2026-07-22 CSZ227 SZX → SIN Jul 22, 18:05 UTCJul 22, 18:35 UTC30m
2026-07-22 CSZ227 SZX → SIN Jul 22, 15:15 UTCJul 22, 15:25 UTC10m
2026-07-22 CSZ227 SZX → SIN Jul 22, 13:25 UTCJul 22, 13:45 UTC20m
2026-07-22 CSZ9750 - Jul 22, 00:15 UTCJul 22, 11:15 UTC11h 0m
2026-07-21 CSZ9315 - Jul 21, 14:50 UTCJul 21, 15:00 UTC10m
2026-07-21 CSZ8271 - Jul 21, 00:20 UTCJul 21, 00:35 UTC15m
2026-07-20 CSZ9418 CTU → SZX Jul 20, 16:15 UTCJul 20, 16:35 UTC20m
2026-07-20 CSZ9411 - Jul 20, 10:55 UTCJul 20, 11:05 UTC10m
2026-07-20 CSZ310 BKK → SZX Jul 20, 09:05 UTCJul 20, 09:25 UTC20m
2026-07-20 CSZ310 BKK → SZX Jul 20, 06:55 UTCJul 20, 07:15 UTC20m
2026-07-20 CSZ309 SZX → BKK Jul 20, 05:20 UTCJul 20, 05:35 UTC15m
2026-07-20 CSZ309 SZX → BKK Jul 20, 03:20 UTCJul 20, 03:40 UTC20m
2026-07-19 CSZ306 - Jul 19, 23:05 UTCJul 19, 23:20 UTC15m
2026-07-19 CSZ306 - Jul 19, 20:55 UTCJul 19, 21:15 UTC20m
2026-07-19 CSZ305 - Jul 19, 17:35 UTCJul 19, 17:50 UTC15m
2026-07-19 CSZ308 - Jul 19, 12:40 UTCJul 19, 12:55 UTC15m
2026-07-19 CSZ307 - Jul 19, 11:10 UTCJul 19, 11:20 UTC10m
2026-07-19 CSZ307 - Jul 19, 09:10 UTCJul 19, 09:30 UTC20m
2026-07-19 CSZ9142 YCU → SZX Jul 19, 07:15 UTCJul 19, 07:30 UTC15m
2026-07-19 CSZ9141 - Jul 19, 00:15 UTCJul 19, 00:25 UTC10m
2026-07-18 CSZ9894 - Jul 18, 16:35 UTCJul 18, 16:50 UTC15m
2026-07-18 CSZ9893 - Jul 18, 11:40 UTCJul 18, 11:50 UTC10m
2026-07-18 CSZ310 BKK → SZX Jul 18, 08:05 UTCJul 18, 08:25 UTC20m
2026-07-18 CSZ310 BKK → SZX Jul 18, 05:50 UTCJul 18, 06:00 UTC10m
2026-07-18 CSZ309 SZX → BKK Jul 18, 04:00 UTCJul 18, 04:20 UTC20m
2026-07-18 CSZ309 SZX → BKK Jul 18, 02:05 UTCJul 18, 02:14 UTC10m
2026-07-17 CSZ306 - Jul 17, 20:44 UTCJul 17, 21:05 UTC20m
2026-07-17 CSZ305 - Jul 17, 16:40 UTCJul 17, 16:55 UTC15m
2026-07-17 CSZ308 - Jul 17, 14:50 UTCJul 17, 15:05 UTC15m
2026-07-17 CSZ308 - Jul 17, 12:35 UTCJul 17, 12:50 UTC15m
2026-07-17 CSZ307 - Jul 17, 10:55 UTCJul 17, 11:15 UTC20m
2026-07-17 CSZ307 - Jul 17, 08:59 UTCJul 17, 09:10 UTC10m
2026-07-16 CSZ9235 - Jul 16, 23:10 UTCJul 16, 23:25 UTC15m
2026-07-16 CSZ9729 - Jul 16, 11:30 UTCJul 16, 11:45 UTC15m
2026-07-15 CSZ9729 - Jul 15, 15:05 UTCJul 16, 11:45 UTC20h 40m
2026-07-14 CSZ9321 - Jul 14, 23:35 UTCJul 15, 15:10 UTC15h 35m

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.

Mode-S 78238F frequently asked

What is Mode-S code 78238F?
78238F is an ICAO 24-bit transponder address. Allocated to China.
Where is Mode-S 78238F registered?
Mode-S code 78238F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78238F broadcasting right now?
Yes. Mode-S 78238F is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78238F, octal 36021617, decimal 7,873,423.
What flights does 78238F operate?
Mode-S 78238F has broadcast 20 distinct callsigns, including CSZ9321, CSZ9729, CSZ310, CSZ309, CSZ9329.