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 6h ago
Flights observed
107
Distinct callsigns
20
Country
CN
Last broadcast
6h ago

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 - 20 2026-07-17
CUA5611 - 20 2026-07-15
CUA5612 - 17 2026-07-15
CUA5858 - 6 2026-07-18
CUA5818 - 5 2026-06-27
CUA5811 China United Airlines 4 2026-06-24
CUA5525 - 4 2026-06-20
CUA5519 - 4 2026-06-23
CUA5829 China United Airlines 3 2026-07-07
CUA5875 - 2 2026-07-05
CUA5685 - 2 2026-06-26
CUA5652 - 2 2026-05-21
CUA5651 - 2 2026-05-21
CUA5630 - 2 2026-07-18
CUA5561 - 2 2026-07-15
CUA5857 - 1 2026-07-10
CUA5817 China United Airlines 1 2026-06-27
CUA5686 - 1 2026-06-26
CUA5678 - 1 2026-05-27
CUA5677 - 1 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
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
2026-06-22 CUA5818 - Jun 22, 11:09 UTCJun 22, 11:24 UTC15m
2026-06-21 CUA5818 - Jun 21, 11:30 UTCJun 21, 11:44 UTC15m
2026-06-20 CUA5811 PKX → HAK Jun 20, 08:55 UTCJun 20, 09:09 UTC15m
2026-06-20 CUA5525 - Jun 20, 00:34 UTCJun 20, 00:44 UTC10m
2026-06-16 CUA5858 - Jun 16, 05:59 UTCJun 16, 06:10 UTC10m
2026-06-12 CUA5611 PKX → URC Jun 12, 00:30 UTCJun 12, 09:15 UTC8h 45m
2026-06-10 CUA5612 URC → PKX Jun 10, 09:00 UTCJun 10, 09:15 UTC15m
2026-06-10 CUA5611 PKX → URC Jun 10, 00:30 UTCJun 10, 00:45 UTC15m
2026-06-09 CUA5685 PKX → HMI Jun 9, 07:55 UTCJun 9, 08:15 UTC20m
2026-06-07 CUA5811 PKX → HAK Jun 7, 08:50 UTCJun 7, 09:00 UTC10m
2026-06-06 CUA5612 URC → PKX Jun 6, 09:09 UTCJun 6, 09:19 UTC10m
2026-06-06 CUA5611 PKX → URC Jun 6, 00:50 UTCJun 6, 01:10 UTC20m
2026-06-05 CUA5858 SZX → PKX Jun 5, 03:50 UTCJun 5, 04:00 UTC10m
2026-06-03 CUA5519 PKX → LDS Jun 3, 23:20 UTCJun 3, 23:35 UTC15m
2026-06-03 CUA5521 PKX → HLD Jun 3, 08:55 UTCJun 3, 09:10 UTC15m
2026-06-02 CUA5630 XNN → PKX Jun 2, 13:30 UTCJun 2, 13:50 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 6h ago.
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.