Apparatus

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sensors Mode-S transponder

781372

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1262 · BOEING 737-800

Hex
781372
Octal
36011562
Decimal
7,869,298
Country
CN
Tail
B-1262
Type
B738
No current signal · last broadcast Jul 26, 16:15 UTC
Flights observed
123
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 16:15 UTC

Last known position

Most recent position reported by Mode-S 781372.

Country allocation

The ICAO 24-bit address 781372 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
CUA5876 - 22 2026-07-23
CUA5611 China United Airlines 22 2026-07-26
CUA5612 China United Airlines 19 2026-07-26
CUA5858 - 6 2026-07-18
CUA5818 - 5 2026-06-27
CUA5811 China United Airlines 4 2026-06-24
CUA5561 China United Airlines 4 2026-07-26
CUA5525 - 4 2026-06-20
CUA5519 - 4 2026-06-23
CUA5829 China United Airlines 3 2026-07-07
CUA5685 - 3 2026-07-19
CUA5630 China United Airlines 3 2026-07-25
CUA5875 - 2 2026-07-05
CUA5686 - 2 2026-07-19
CUA5652 - 2 2026-05-21
CUA5651 - 2 2026-05-21
CUA5955 - 1 2026-07-22
CUA5902 China United Airlines 1 2026-07-25
CUA5857 - 1 2026-07-10
CUA5817 China United Airlines 1 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CUA5562 JXA → PKX Jul 26, 16:05 UTCJul 26, 16:15 UTC10m
2026-07-26 CUA5561 PKX → JXA Jul 26, 11:25 UTCJul 26, 11:35 UTC10m
2026-07-26 CUA5612 URC → PKX Jul 26, 09:05 UTCJul 26, 09:20 UTC15m
2026-07-26 CUA5611 PKX → URC Jul 26, 00:30 UTCJul 26, 00:45 UTC15m
2026-07-25 CUA5630 XNN → PKX Jul 25, 14:10 UTCJul 25, 14:25 UTC15m
2026-07-25 CUA5902 JUH → PKX Jul 25, 03:20 UTCJul 25, 03:35 UTC15m
2026-07-24 CUA5561 - Jul 24, 11:25 UTCJul 24, 11:35 UTC10m
2026-07-24 CUA5612 URC → PKX Jul 24, 08:55 UTCJul 24, 09:15 UTC20m
2026-07-24 CUA5611 PKX → URC Jul 24, 00:35 UTCJul 24, 00:50 UTC15m
2026-07-23 CUA5876 - Jul 23, 05:20 UTCJul 23, 05:35 UTC15m
2026-07-22 CUA5955 - Jul 22, 12:05 UTCJul 22, 12:35 UTC30m
2026-07-21 CUA5692 - Jul 21, 15:10 UTCJul 21, 15:20 UTC10m
2026-07-21 CUA5691 - Jul 21, 07:45 UTCJul 21, 08:00 UTC15m
2026-07-20 CUA5876 - Jul 20, 05:20 UTCJul 20, 05:35 UTC15m
2026-07-19 CUA5686 - Jul 19, 14:25 UTCJul 19, 14:40 UTC15m
2026-07-19 CUA5685 - Jul 19, 07:55 UTCJul 19, 08:25 UTC30m
2026-07-18 CUA5630 - Jul 18, 13:45 UTCJul 18, 14:00 UTC15m
2026-07-18 CUA5858 - Jul 18, 03:55 UTCJul 18, 04:05 UTC10m
2026-07-17 CUA5876 - Jul 17, 05:30 UTCJul 17, 05:39 UTC10m
2026-07-16 CUA5522 - Jul 16, 12:14 UTCJul 16, 12:25 UTC10m
2026-07-16 CUA5567 - Jul 16, 02:45 UTCJul 16, 03:00 UTC15m
2026-07-15 CUA5561 - Jul 15, 11:25 UTCJul 15, 11:35 UTC10m
2026-07-15 CUA5612 - Jul 15, 08:55 UTCJul 15, 09:05 UTC10m
2026-07-15 CUA5611 - Jul 15, 00:35 UTCJul 15, 00:55 UTC20m
2026-07-13 CUA5876 - Jul 13, 05:10 UTCJul 13, 05:20 UTC10m
2026-07-12 CUA5876 - Jul 12, 05:25 UTCJul 12, 05:40 UTC15m
2026-07-11 CUA5876 - Jul 11, 05:25 UTCJul 11, 05:40 UTC15m
2026-07-10 CUA5857 - Jul 10, 01:50 UTCJul 10, 02:10 UTC20m
2026-07-09 CUA5561 PKX → JXA Jul 9, 11:20 UTCJul 9, 11:35 UTC15m
2026-07-09 CUA5612 - Jul 9, 09:30 UTCJul 9, 09:40 UTC10m
2026-07-09 CUA5611 - Jul 9, 00:40 UTCJul 9, 00:55 UTC15m
2026-07-08 CUA5876 - Jul 8, 09:55 UTCJul 8, 10:10 UTC15m
2026-07-07 CUA5829 PKX → CAN Jul 7, 13:40 UTCJul 7, 13:50 UTC10m
2026-07-07 CUA5876 - Jul 7, 07:15 UTCJul 7, 07:25 UTC10m
2026-07-05 CUA5530 - Jul 5, 14:15 UTCJul 5, 14:25 UTC10m
2026-07-05 CUA5876 - Jul 5, 05:25 UTCJul 5, 05:35 UTC10m
2026-07-05 CUA5875 - Jul 5, 03:40 UTCJul 5, 04:00 UTC20m
2026-07-04 CUA5622 - Jul 4, 05:20 UTCJul 4, 05:40 UTC20m
2026-07-01 CUA5876 - Jul 1, 05:15 UTCJul 1, 05:25 UTC10m
2026-06-30 CUA5829 PKX → CAN Jun 30, 12:45 UTCJun 30, 13:00 UTC15m
2026-06-29 CUA5858 - Jun 29, 04:00 UTCJun 29, 04:09 UTC10m
2026-06-28 CUA5612 - Jun 28, 08:55 UTCJun 28, 09:05 UTC10m
2026-06-28 CUA5611 - Jun 28, 00:30 UTCJun 28, 00:45 UTC15m
2026-06-27 CUA5818 - Jun 27, 11:00 UTCJun 27, 11:14 UTC15m
2026-06-27 CUA5817 PKX → ZUH Jun 27, 09:09 UTCJun 27, 09:29 UTC20m
2026-06-26 CUA5686 - Jun 26, 14:19 UTCJun 26, 14:29 UTC10m
2026-06-26 CUA5685 - Jun 26, 08:05 UTCJun 26, 08:15 UTC10m
2026-06-24 CUA5811 PKX → HAK Jun 24, 09:09 UTCJun 24, 09:24 UTC15m
2026-06-23 CUA5519 - Jun 23, 23:24 UTCJun 23, 23:39 UTC15m
2026-06-23 CUA5818 - Jun 23, 11:19 UTCJun 23, 11:40 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-1262 page for operator, model, and routing details .

Mode-S 781372 frequently asked

What is Mode-S code 781372?
781372 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1262.
Where is Mode-S 781372 registered?
Mode-S code 781372 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 781372 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 781372, octal 36011562, decimal 7,869,298.
What flights does 781372 operate?
Mode-S 781372 has broadcast 20 distinct callsigns, including CUA5876, CUA5611, CUA5612, CUA5858, CUA5818.