Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
No current signal · last broadcast 16h ago
Flights observed
354
Distinct callsigns
20
Country
CN
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 781E52.

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 - 39 2026-07-06
CSZ9074 - 38 2026-07-06
CSZ9114 - 21 2026-07-11
CSZ9802 - 20 2026-06-30
CSZ9106 - 19 2026-07-07
CSZ9801 Shenzhen Airlines 18 2026-07-05
CSZ9113 - 17 2026-07-10
CSZ9105 - 17 2026-07-01
CSZ9102 - 15 2026-06-29
CSZ9506 - 13 2026-07-13
CSZ9209 - 13 2026-07-13
CSZ9505 - 12 2026-07-13
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
2026-07-13 CSZ9209 - Jul 13, 12:50 UTCJul 13, 13:00 UTC10m
2026-07-13 CSZ9506 - Jul 13, 10:15 UTCJul 13, 10:55 UTC40m
2026-07-13 CSZ9505 - Jul 13, 05:10 UTCJul 13, 05:20 UTC10m
2026-07-13 CSZ9210 - Jul 13, 03:30 UTCJul 13, 03:45 UTC15m
2026-07-12 CSZ9209 - Jul 12, 12:50 UTCJul 12, 13:01 UTC10m
2026-07-12 CSZ9104 - Jul 12, 09:25 UTCJul 12, 09:50 UTC25m
2026-07-12 CSZ9104 - Jul 12, 06:55 UTCJul 12, 07:15 UTC20m
2026-07-12 CSZ9103 - Jul 12, 02:15 UTCJul 12, 02:25 UTC10m
2026-07-11 CSZ9318 - Jul 11, 16:40 UTCJul 11, 16:50 UTC10m
2026-07-11 CSZ9313 - Jul 11, 13:40 UTCJul 11, 13:55 UTC15m
2026-07-11 CSZ9505 - Jul 11, 05:01 UTCJul 11, 05:15 UTC15m
2026-07-11 CSZ9114 - Jul 11, 00:20 UTCJul 11, 00:35 UTC15m
2026-07-10 CSZ9113 - Jul 10, 16:40 UTCJul 10, 16:55 UTC15m
2026-07-10 CSZ9113 - Jul 10, 14:05 UTCJul 10, 14:15 UTC10m
2026-07-10 CSZ9506 - Jul 10, 10:25 UTCJul 10, 11:05 UTC40m
2026-07-10 CSZ9505 - Jul 10, 05:15 UTCJul 10, 05:25 UTC10m
2026-07-09 CSZ9209 - Jul 9, 15:10 UTCJul 9, 15:25 UTC15m
2026-07-09 CSZ9506 - Jul 9, 06:35 UTCJul 9, 13:45 UTC7h 10m
2026-07-09 CSZ9505 - Jul 9, 05:15 UTCJul 9, 05:25 UTC10m
2026-07-09 CSZ9854 - Jul 9, 03:05 UTCJul 9, 03:45 UTC40m
2026-07-08 CSZ9859 - Jul 8, 22:55 UTCJul 8, 23:05 UTC10m
2026-07-08 CSZ9410 - Jul 8, 18:00 UTCJul 8, 18:10 UTC10m
2026-07-08 CSZ9409 - Jul 8, 10:10 UTCJul 8, 10:25 UTC15m
2026-07-08 CSZ9884 - Jul 8, 07:25 UTCJul 8, 08:20 UTC55m
2026-07-08 CSZ9883 - Jul 8, 01:45 UTCJul 8, 02:00 UTC15m
2026-07-07 CSZ9106 - Jul 7, 19:15 UTCJul 7, 19:30 UTC15m
2026-07-07 CSZ9106 - Jul 7, 16:40 UTCJul 7, 17:00 UTC20m
2026-07-07 CSZ9114 PEK → SZX Jul 7, 00:20 UTCJul 7, 00:40 UTC20m
2026-07-06 CSZ9074 - Jul 6, 09:45 UTCJul 6, 11:10 UTC1h 25m
2026-07-06 CSZ9073 - Jul 6, 07:05 UTCJul 6, 08:30 UTC1h 25m
2026-07-05 CSZ9801 SZX → PEK Jul 5, 23:45 UTCJul 6, 05:35 UTC5h 50m
2026-07-05 CSZ9074 - Jul 5, 10:45 UTCJul 5, 12:10 UTC1h 25m
2026-07-05 CSZ9073 - Jul 5, 08:55 UTCJul 5, 09:25 UTC30m
2026-07-05 CSZ9072 - Jul 5, 06:20 UTCJul 5, 06:35 UTC15m
2026-07-05 CSZ9072 - Jul 5, 05:15 UTCJul 5, 05:45 UTC30m
2026-07-05 CSZ9071 - Jul 5, 02:30 UTCJul 5, 04:00 UTC1h 30m
2026-07-04 CSZ9110 - Jul 4, 18:55 UTCJul 4, 19:20 UTC25m
2026-07-04 CSZ9110 - Jul 4, 15:55 UTCJul 4, 16:45 UTC50m
2026-07-04 CSZ9109 - Jul 4, 10:15 UTCJul 4, 10:30 UTC15m
2026-07-04 CSZ9884 - Jul 4, 08:35 UTCJul 4, 08:50 UTC15m
2026-07-04 CSZ9883 - Jul 4, 02:15 UTCJul 4, 02:25 UTC10m
2026-07-03 CSZ9894 - Jul 3, 17:50 UTCJul 3, 18:15 UTC25m
2026-07-03 CSZ9893 - Jul 3, 12:15 UTCJul 3, 12:25 UTC10m
2026-07-03 CSZ9403 - Jul 3, 00:35 UTCJul 3, 00:50 UTC15m
2026-07-02 CSZ9468 - Jul 2, 18:40 UTCJul 2, 18:50 UTC10m
2026-07-02 CSZ9467 - Jul 2, 11:10 UTCJul 2, 11:25 UTC15m
2026-07-02 CSZ9203 - Jul 2, 02:35 UTCJul 2, 02:45 UTC10m
2026-07-01 CSZ9106 - Jul 1, 09:25 UTCJul 1, 09:45 UTC20m
2026-07-01 CSZ9105 - Jul 1, 04:35 UTCJul 1, 04:50 UTC15m
2026-07-01 CSZ9114 PEK → SZX Jul 1, 02:35 UTCJul 1, 03:00 UTC25m

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?
No active broadcast right now. Last signal was 16h ago.
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, CSZ9802, CSZ9106.