Apparatus

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sensors Mode-S transponder

781E52

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-32CG · AIRBUS A-321neo

Hex
781E52
Octal
36017122
Decimal
7,872,082
Country
CN
Tail
B-32CG
Type
A21N
Broadcasting now · callsign CSZ9105 · 8,650 ft
Flights observed
403
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:25 UTC

Current position

781E52 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 781E52 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
CSZ9073 Shenzhen Airlines 43 2026-07-25
CSZ9074 Shenzhen Airlines 42 2026-07-25
CSZ9114 Shenzhen Airlines 26 2026-07-22
CSZ9106 Shenzhen Airlines 25 2026-07-26
CSZ9802 Shenzhen Airlines 22 2026-07-20
CSZ9105 Shenzhen Airlines 21 2026-07-20
CSZ9801 Shenzhen Airlines 20 2026-07-18
CSZ9113 Shenzhen Airlines 20 2026-07-21
CSZ9209 - 15 2026-07-22
CSZ9102 - 15 2026-06-29
CSZ9506 - 14 2026-07-15
CSZ9505 - 14 2026-07-15
CSZ9101 Shenzhen Airlines 9 2026-06-28
CSZ9110 - 8 2026-07-04
CSZ9812 Shenzhen Airlines 6 2026-06-03
CSZ9109 - 6 2026-07-04
CSZ9072 - 6 2026-07-05
CSZ9811 Shenzhen Airlines 5 2026-06-03
CSZ9948 - 4 2026-06-28
CSZ9947 - 4 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CSZ9106 PEK → SZX Jul 26, 13:15 UTCJul 26, 13:25 UTC10m
2026-07-26 CSZ9106 PEK → SZX Jul 26, 10:35 UTCJul 26, 10:50 UTC15m
2026-07-25 CSZ9074 TPE → SZX Jul 25, 10:40 UTCJul 25, 12:00 UTC1h 20m
2026-07-25 CSZ9073 SZX → TPE Jul 25, 07:45 UTCJul 25, 09:20 UTC1h 35m
2026-07-25 CSZ9512 PVG → SZX Jul 25, 05:15 UTCJul 25, 06:30 UTC1h 15m
2026-07-25 CSZ9511 SZX → PVG Jul 25, 00:25 UTCJul 25, 00:35 UTC10m
2026-07-24 CSZ9467 SZX → CKG Jul 24, 11:20 UTCJul 24, 11:35 UTC15m
2026-07-24 CSZ9104 PEK → SZX Jul 24, 09:35 UTCJul 24, 10:00 UTC25m
2026-07-24 CSZ9104 PEK → SZX Jul 24, 07:00 UTCJul 24, 07:45 UTC45m
2026-07-24 CSZ9103 SZX → PEK Jul 24, 02:25 UTCJul 24, 02:40 UTC15m
2026-07-23 CSZ9950 CGO → SZX Jul 23, 17:05 UTCJul 23, 17:35 UTC30m
2026-07-23 CSZ9201 SZX → XIY Jul 23, 04:50 UTCJul 23, 05:05 UTC15m
2026-07-22 CSZ9209 - Jul 22, 12:50 UTCJul 22, 13:10 UTC20m
2026-07-22 CSZ9114 PEK → SZX Jul 22, 00:30 UTCJul 22, 00:50 UTC20m
2026-07-21 CSZ9113 SZX → PEK Jul 21, 14:00 UTCJul 21, 14:15 UTC15m
2026-07-21 CSZ9074 TPE → SZX Jul 21, 09:50 UTCJul 21, 10:50 UTC1h 0m
2026-07-21 CSZ9073 SZX → TPE Jul 21, 06:50 UTCJul 21, 08:15 UTC1h 25m
2026-07-20 CSZ9802 PEK → SZX Jul 20, 23:30 UTCJul 21, 05:25 UTC5h 54m
2026-07-20 CSZ9318 CGO → SZX Jul 20, 19:20 UTCJul 20, 20:05 UTC45m
2026-07-20 CSZ9313 SZX → HAK Jul 20, 16:20 UTCJul 20, 16:40 UTC20m
2026-07-20 CSZ9106 - Jul 20, 14:00 UTCJul 20, 14:15 UTC15m
2026-07-20 CSZ9105 SZX → PEK Jul 20, 07:10 UTCJul 20, 07:20 UTC10m
2026-07-20 CSZ9105 SZX → PEK Jul 20, 04:35 UTCJul 20, 04:50 UTC15m
2026-07-20 CSZ9114 PEK → SZX Jul 20, 02:45 UTCJul 20, 03:05 UTC20m
2026-07-20 CSZ9114 PEK → SZX Jul 20, 00:15 UTCJul 20, 00:35 UTC20m
2026-07-19 CSZ9113 - Jul 19, 13:15 UTCJul 19, 13:25 UTC10m
2026-07-19 CSZ9074 TPE → SZX Jul 19, 09:40 UTCJul 19, 11:10 UTC1h 30m
2026-07-19 CSZ9073 SZX → TPE Jul 19, 06:45 UTCJul 19, 08:10 UTC1h 25m
2026-07-18 CSZ9801 SZX → PEK Jul 18, 23:45 UTCJul 18, 23:55 UTC10m
2026-07-18 CSZ9468 CKG → SZX Jul 18, 18:30 UTCJul 18, 18:45 UTC15m
2026-07-18 CSZ9467 - Jul 18, 13:30 UTCJul 18, 13:40 UTC10m
2026-07-18 CSZ9074 - Jul 18, 10:35 UTCJul 18, 11:55 UTC1h 20m
2026-07-18 CSZ9073 - Jul 18, 07:35 UTCJul 18, 09:05 UTC1h 30m
2026-07-18 CSZ9802 - Jul 18, 05:50 UTCJul 18, 06:10 UTC20m
2026-07-17 CSZ9801 SZX → PEK Jul 17, 23:39 UTCJul 17, 23:50 UTC10m
2026-07-17 CSZ9318 - Jul 17, 17:30 UTCJul 17, 17:50 UTC20m
2026-07-17 CSZ9313 - Jul 17, 13:55 UTCJul 17, 14:10 UTC15m
2026-07-17 CSZ9106 - Jul 17, 09:50 UTCJul 17, 10:05 UTC15m
2026-07-17 CSZ9105 - Jul 17, 04:59 UTCJul 17, 05:10 UTC10m
2026-07-16 CSZ9106 - Jul 16, 12:49 UTCJul 16, 13:10 UTC20m
2026-07-16 CSZ9106 - Jul 16, 10:29 UTCJul 16, 10:45 UTC15m
2026-07-16 CSZ9105 - Jul 16, 04:55 UTCJul 16, 05:10 UTC15m
2026-07-15 CSZ9209 - Jul 15, 14:35 UTCJul 15, 14:50 UTC15m
2026-07-15 CSZ9506 - Jul 15, 12:45 UTCJul 15, 12:55 UTC10m
2026-07-15 CSZ9505 - Jul 15, 05:30 UTCJul 15, 05:40 UTC10m
2026-07-15 CSZ9114 - Jul 15, 03:05 UTCJul 15, 03:15 UTC10m
2026-07-15 CSZ9114 - Jul 15, 00:10 UTCJul 15, 00:30 UTC20m
2026-07-14 CSZ9113 - Jul 14, 13:30 UTCJul 14, 13:40 UTC10m
2026-07-14 CSZ9505 - Jul 14, 06:25 UTCJul 14, 11:50 UTC5h 25m
2026-07-13 CSZ9209 - Jul 13, 12:50 UTCJul 13, 13:00 UTC10m

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-32CG page for operator, model, and routing details .

Mode-S 781E52 frequently asked

What is Mode-S code 781E52?
781E52 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-32CG.
Where is Mode-S 781E52 registered?
Mode-S code 781E52 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781E52 broadcasting right now?
Yes. Mode-S 781E52 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781E52, octal 36017122, decimal 7,872,082.
What flights does 781E52 operate?
Mode-S 781E52 has broadcast 20 distinct callsigns, including CSZ9073, CSZ9074, CSZ9114, CSZ9106, CSZ9802.