Apparatus

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sensors Mode-S transponder

78233A

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32PC · AIRBUS A-320neo

Hex
78233A
Octal
36021472
Decimal
7,873,338
Country
CN
Tail
B-32PC
Type
A20N
No current signal · last broadcast Jul 26, 22:15 UTC
Flights observed
120
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 22:15 UTC

Last known position

Most recent position reported by Mode-S 78233A.

Country allocation

The ICAO 24-bit address 78233A 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
CSZ8271 - 8 2026-07-12
CSZ9321 Shenzhen Airlines 5 2026-07-22
CSZ9847 Shenzhen Airlines 4 2026-07-25
CSZ9729 - 4 2026-07-22
CSZ9322 Shenzhen Airlines 4 2026-07-24
CSZ9315 - 4 2026-07-12
CSZ9899 Shenzhen Airlines 3 2026-07-25
CSZ9844 Shenzhen Airlines 3 2026-07-26
CSZ9601 - 3 2026-06-16
CSZ9316 - 3 2026-07-12
CSZ228 - 3 2026-07-16
CSZ9900 - 2 2026-06-15
CSZ9884 - 2 2026-06-30
CSZ9883 - 2 2026-06-30
CSZ9849 Shenzhen Airlines 2 2026-06-10
CSZ9843 - 2 2026-06-14
CSZ9749 - 2 2026-07-16
CSZ9730 Shenzhen Airlines 2 2026-07-21
CSZ9606 Shenzhen Airlines 2 2026-07-20
CSZ9602 Shenzhen Airlines 2 2026-06-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ306 BKK → SZX Jul 26, 20:40 UTCJul 26, 22:15 UTC1h 35m
2026-07-26 CSZ305 SZX → BKK Jul 26, 16:35 UTCJul 26, 18:50 UTC2h 15m
2026-07-26 CSZ9844 NKG → SZX Jul 26, 10:10 UTCJul 26, 10:20 UTC10m
2026-07-25 CSZ9847 SZX → NKG Jul 25, 07:05 UTCJul 25, 07:20 UTC15m
2026-07-25 CSZ9899 SZX → HFE Jul 25, 00:45 UTCJul 25, 00:55 UTC10m
2026-07-24 CSZ9322 SYX → SZX Jul 24, 16:35 UTCJul 24, 16:45 UTC10m
2026-07-22 CSZ9321 SZX → SYX Jul 22, 23:35 UTCJul 23, 03:30 UTC3h 55m
2026-07-22 CSZ9322 SYX → SZX Jul 22, 15:15 UTCJul 22, 15:40 UTC25m
2026-07-22 CSZ9729 - Jul 22, 11:55 UTCJul 22, 12:10 UTC15m
2026-07-21 CSZ9730 SYX → NTG Jul 21, 02:55 UTCJul 21, 03:45 UTC50m
2026-07-20 CSZ9321 - Jul 20, 23:30 UTCJul 20, 23:45 UTC15m
2026-07-20 CSZ8111 - Jul 20, 07:00 UTCJul 20, 07:10 UTC10m
2026-07-20 CSZ9606 JDZ → CAN Jul 20, 05:25 UTCJul 20, 05:35 UTC10m
2026-07-20 CSZ9606 JDZ → CAN Jul 20, 02:40 UTCJul 20, 02:55 UTC15m
2026-07-19 CSZ9847 - Jul 19, 08:45 UTCJul 19, 08:55 UTC10m
2026-07-18 CSZ8979 SZX → YNT Jul 18, 23:40 UTCJul 19, 00:35 UTC55m
2026-07-18 CSZ9322 SYX → SZX Jul 18, 15:20 UTCJul 18, 15:30 UTC10m
2026-07-18 CSZ9729 - Jul 18, 11:35 UTCJul 18, 11:55 UTC20m
2026-07-16 CSZ9321 - Jul 16, 23:40 UTCJul 16, 23:55 UTC15m
2026-07-16 CSZ9312 - Jul 16, 15:35 UTCJul 16, 15:45 UTC10m
2026-07-16 CSZ9749 - Jul 16, 04:30 UTCJul 16, 12:40 UTC8h 10m
2026-07-16 CSZ228 - Jul 16, 02:10 UTCJul 16, 02:20 UTC10m
2026-07-15 CSZ228 - Jul 15, 23:20 UTCJul 15, 23:30 UTC10m
2026-07-15 CSZ228 - Jul 15, 19:45 UTCJul 15, 20:10 UTC25m
2026-07-15 CSZ227 - Jul 15, 17:55 UTCJul 15, 18:20 UTC25m
2026-07-15 CSZ227 - Jul 15, 15:00 UTCJul 15, 15:10 UTC10m
2026-07-15 CSZ8952 - Jul 15, 13:05 UTCJul 15, 13:30 UTC25m
2026-07-15 CSZ8951 - Jul 15, 02:45 UTCJul 15, 02:55 UTC10m
2026-07-14 CSZ8954 - Jul 14, 23:40 UTCJul 15, 00:20 UTC40m
2026-07-14 CSZ8953 - Jul 14, 13:50 UTCJul 14, 14:00 UTC10m
2026-07-14 CSZ8952 - Jul 14, 11:10 UTCJul 14, 12:30 UTC1h 20m
2026-07-13 CSZ9317 - Jul 13, 15:55 UTCJul 13, 16:05 UTC10m
2026-07-13 CSZ9457 - Jul 13, 08:30 UTCJul 13, 08:40 UTC10m
2026-07-13 CSZ9453 - Jul 13, 01:45 UTCJul 13, 02:05 UTC20m
2026-07-12 CSZ9316 - Jul 12, 23:40 UTCJul 12, 23:55 UTC15m
2026-07-12 CSZ9315 - Jul 12, 14:45 UTCJul 12, 15:01 UTC15m
2026-07-12 CSZ8271 - Jul 12, 00:15 UTCJul 12, 00:25 UTC10m
2026-07-11 CSZ8271 - Jul 11, 00:25 UTCJul 11, 00:35 UTC10m
2026-07-10 CSZ8272 - Jul 10, 13:25 UTCJul 10, 13:35 UTC10m
2026-07-10 CSZ8271 - Jul 10, 00:30 UTCJul 10, 00:50 UTC20m
2026-07-09 CSZ8271 - Jul 9, 00:30 UTCJul 9, 00:40 UTC10m
2026-07-08 CSZ9808 - Jul 8, 03:55 UTCJul 8, 16:45 UTC12h 50m
2026-07-07 CSZ9847 - Jul 7, 15:35 UTCJul 7, 15:45 UTC10m
2026-07-07 CSZ8979 - Jul 7, 00:25 UTCJul 7, 00:40 UTC15m
2026-07-05 CSZ9213 - Jul 5, 12:30 UTCJul 5, 12:40 UTC10m
2026-07-05 CSZ8974 - Jul 5, 10:45 UTCJul 5, 10:55 UTC10m
2026-07-05 CSZ8973 - Jul 5, 04:20 UTCJul 5, 04:30 UTC10m
2026-07-05 CSZ9314 - Jul 5, 02:20 UTCJul 5, 02:40 UTC20m
2026-07-03 CSZ9750 - Jul 3, 00:10 UTCJul 3, 13:15 UTC13h 5m
2026-07-02 CSZ9313 - Jul 2, 14:45 UTCJul 2, 15:00 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-32PC page for operator, model, and routing details .

Mode-S 78233A frequently asked

What is Mode-S code 78233A?
78233A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32PC.
Where is Mode-S 78233A registered?
Mode-S code 78233A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78233A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78233A, octal 36021472, decimal 7,873,338.
What flights does 78233A operate?
Mode-S 78233A has broadcast 20 distinct callsigns, including CSZ8271, CSZ9321, CSZ9847, CSZ9729, CSZ9322.