Apparatus

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sensors Mode-S transponder

780F19

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-7372 · BOEING 737-800

Hex
780F19
Octal
36007431
Decimal
7,868,185
Country
CN
Tail
B-7372
Type
B738
No current signal · last broadcast 12h ago
Flights observed
69
Distinct callsigns
20
Country
CN
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 780F19.

Country allocation

The ICAO 24-bit address 780F19 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
CUA5851 - 5 2026-07-20
CUA5595 - 5 2026-07-14
CUA5852 China United Airlines 4 2026-07-20
CUA5638 - 4 2026-07-11
CUA5529 - 4 2026-06-08
CUA5652 - 3 2026-06-12
CUA5597 China United Airlines 3 2026-05-27
CUA5525 China United Airlines 3 2026-07-20
CUA2320 China United Airlines 3 2026-05-07
CUA2319 China United Airlines 3 2026-05-07
CUA5802 China United Airlines 2 2026-06-07
CUA5651 - 2 2026-06-12
CUA5596 - 2 2026-07-04
CUA2819 - 2 2026-07-13
CUA5858 - 1 2026-07-06
CUA5857 - 1 2026-07-06
CUA5812 China United Airlines 1 2026-07-07
CUA5811 - 1 2026-07-07
CUA5686 China United Airlines 1 2026-05-09
CUA5685 China United Airlines 1 2026-05-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 CUA5102 - Jul 21, 10:50 UTCJul 21, 11:05 UTC15m
2026-07-20 CUA5852 SZX → PKX Jul 20, 12:05 UTCJul 20, 12:20 UTC15m
2026-07-20 CUA5851 - Jul 20, 09:45 UTCJul 20, 10:05 UTC20m
2026-07-20 CUA5851 - Jul 20, 07:15 UTCJul 20, 07:30 UTC15m
2026-07-20 CUA5525 PKX → YSQ Jul 20, 00:20 UTCJul 20, 00:35 UTC15m
2026-07-19 CUA5852 SZX → PKX Jul 19, 10:15 UTCJul 19, 10:30 UTC15m
2026-07-19 CUA5851 - Jul 19, 08:40 UTCJul 19, 09:05 UTC25m
2026-07-18 CUA5116 - Jul 18, 12:30 UTCJul 18, 12:40 UTC10m
2026-07-18 CUA5115 - Jul 18, 10:15 UTCJul 18, 10:30 UTC15m
2026-07-17 CUA5119 - Jul 17, 02:59 UTCJul 17, 03:10 UTC10m
2026-07-14 CUA5595 - Jul 14, 23:50 UTCJul 15, 00:05 UTC15m
2026-07-14 CUA2128 - Jul 14, 00:40 UTCJul 14, 00:55 UTC15m
2026-07-13 CUA2819 - Jul 13, 01:45 UTCJul 13, 02:10 UTC25m
2026-07-11 CUA5638 - Jul 11, 11:05 UTCJul 11, 11:15 UTC10m
2026-07-10 CUA5852 - Jul 10, 13:40 UTCJul 10, 13:55 UTC15m
2026-07-10 CUA5852 - Jul 10, 11:00 UTCJul 10, 11:10 UTC10m
2026-07-10 CUA5851 - Jul 10, 09:10 UTCJul 10, 09:30 UTC20m
2026-07-10 CUA5851 - Jul 10, 07:00 UTCJul 10, 07:10 UTC10m
2026-07-09 CUA5006 - Jul 9, 16:25 UTCJul 9, 16:40 UTC15m
2026-07-09 CUA5005 - Jul 9, 14:55 UTCJul 9, 15:15 UTC20m
2026-07-07 CUA5812 HAK → PKX Jul 7, 14:15 UTCJul 7, 14:30 UTC15m
2026-07-07 CUA5811 - Jul 7, 09:00 UTCJul 7, 09:10 UTC10m
2026-07-06 CUA5858 - Jul 6, 04:20 UTCJul 6, 04:30 UTC10m
2026-07-06 CUA5857 - Jul 6, 02:00 UTCJul 6, 02:25 UTC25m
2026-07-05 CUA5630 - Jul 5, 14:15 UTCJul 5, 14:30 UTC15m
2026-07-04 CUA5596 - Jul 4, 03:10 UTCJul 4, 03:20 UTC10m
2026-07-03 CUA5595 PKX → DBC Jul 3, 23:45 UTCJul 4, 00:00 UTC15m
2026-07-03 CUA2126 - Jul 3, 02:20 UTCJul 3, 02:35 UTC15m
2026-07-01 CUA2819 - Jul 1, 23:40 UTCJul 2, 00:00 UTC20m
2026-06-27 CUA5595 PKX → DBC Jun 27, 23:50 UTCJun 28, 00:00 UTC10m
2026-06-23 CUA5638 - Jun 23, 11:40 UTCJun 23, 11:49 UTC10m
2026-06-23 CUA5525 - Jun 23, 00:19 UTCJun 23, 00:35 UTC15m
2026-06-12 CUA5652 - Jun 12, 13:55 UTCJun 12, 14:10 UTC15m
2026-06-12 CUA5651 - Jun 12, 06:10 UTCJun 12, 06:30 UTC20m
2026-06-11 CUA5509 PKX → JXA Jun 11, 23:15 UTCJun 11, 23:25 UTC10m
2026-06-09 CUA5638 LHW → PKX Jun 9, 10:40 UTCJun 9, 10:55 UTC15m
2026-06-09 CUA5525 PKX → YSQ Jun 9, 00:15 UTCJun 9, 00:25 UTC10m
2026-06-08 CUA5530 - Jun 8, 16:30 UTCJun 8, 16:40 UTC10m
2026-06-08 CUA5529 - Jun 8, 12:55 UTCJun 8, 13:10 UTC15m
2026-06-07 CUA5802 DSN → PKX Jun 7, 05:30 UTCJun 7, 05:45 UTC15m
2026-05-30 CUA5535 - May 30, 05:05 UTCMay 30, 05:20 UTC15m
2026-05-29 CUA5529 - May 29, 10:35 UTCMay 29, 10:50 UTC15m
2026-05-28 CUA5638 LHW → PKX May 28, 10:50 UTCMay 28, 11:00 UTC10m
2026-05-27 CUA5597 PKX → JMU May 27, 10:20 UTCMay 27, 10:30 UTC10m
2026-05-26 CUA5652 - May 26, 13:45 UTCMay 26, 14:00 UTC15m
2026-05-26 CUA5651 - May 26, 06:10 UTCMay 26, 06:29 UTC20m
2026-05-25 CUA5652 - May 25, 13:40 UTCMay 25, 13:55 UTC15m
2026-05-21 CUA5529 - May 21, 10:30 UTCMay 21, 10:45 UTC15m
2026-05-19 CUA5569 PKX → DQA May 19, 05:20 UTCMay 19, 05:30 UTC10m
2026-05-19 CUA5596 DBC → PKX May 19, 03:05 UTCMay 19, 03:15 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-7372 page for operator, model, and routing details .

Mode-S 780F19 frequently asked

What is Mode-S code 780F19?
780F19 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-7372.
Where is Mode-S 780F19 registered?
Mode-S code 780F19 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780F19 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780F19, octal 36007431, decimal 7,868,185.
What flights does 780F19 operate?
Mode-S 780F19 has broadcast 20 distinct callsigns, including CUA5851, CUA5595, CUA5852, CUA5638, CUA5529.