Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

780057

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-5210 · BOEING 737-700

Hex
780057
Octal
36000127
Decimal
7,864,407
Country
CN
Tail
B-5210
Type
B737
No current signal · last broadcast 3d ago
Flights observed
49
Distinct callsigns
14
Country
CN
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 780057.

Country allocation

The ICAO 24-bit address 780057 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 14 distinct

Callsign Airline Flights Last seen
CUA5535 - 10 2026-06-26
CUA5571 - 9 2026-07-07
CUA5521 - 8 2026-07-14
CUA5597 - 4 2026-07-15
CUA5567 - 3 2026-06-25
CUA5686 China United Airlines 2 2026-05-20
CUA5685 China United Airlines 2 2026-05-20
CUA5627 China United Airlines 2 2026-07-04
CUA5536 - 2 2026-06-10
CUA5529 - 2 2026-06-07
CUA5396 China United Airlines 2 2026-05-04
CUA5598 - 1 2026-07-12
CUA5572 - 1 2026-05-21
CUA5391 China United Airlines 1 2026-06-03

Recent flights last 49

DateFlightRouteTakeoffLandingDuration
2026-07-15 CUA5597 - Jul 15, 08:40 UTCJul 15, 08:50 UTC10m
2026-07-14 CUA5521 - Jul 14, 07:40 UTCJul 14, 07:55 UTC15m
2026-07-12 CUA5598 - Jul 12, 15:45 UTCJul 12, 15:55 UTC10m
2026-07-12 CUA5597 - Jul 12, 11:01 UTCJul 12, 11:15 UTC15m
2026-07-09 CUA5597 - Jul 9, 08:40 UTCJul 9, 08:50 UTC10m
2026-07-07 CUA5571 - Jul 7, 01:30 UTCJul 7, 01:40 UTC10m
2026-07-04 CUA5627 PKX → ACX Jul 4, 08:20 UTCJul 4, 08:30 UTC10m
2026-06-26 CUA5521 PKX → HLD Jun 26, 11:05 UTCJun 26, 11:20 UTC15m
2026-06-26 CUA5535 - Jun 26, 05:05 UTCJun 26, 05:24 UTC20m
2026-06-25 CUA5567 - Jun 25, 02:49 UTCJun 25, 03:10 UTC20m
2026-06-24 CUA5627 PKX → ACX Jun 24, 08:09 UTCJun 24, 08:30 UTC20m
2026-06-23 CUA5571 - Jun 23, 00:30 UTCJun 23, 00:39 UTC10m
2026-06-22 CUA5535 - Jun 22, 05:04 UTCJun 22, 05:24 UTC20m
2026-06-21 CUA5521 PKX → HLD Jun 21, 10:29 UTCJun 21, 10:49 UTC20m
2026-06-21 CUA5535 - Jun 21, 04:54 UTCJun 21, 05:15 UTC20m
2026-06-13 CUA5571 - Jun 13, 00:10 UTCJun 13, 00:20 UTC10m
2026-06-12 CUA5521 PKX → HLD Jun 12, 06:50 UTCJun 12, 07:10 UTC20m
2026-06-10 CUA5536 - Jun 10, 08:50 UTCJun 10, 09:05 UTC15m
2026-06-10 CUA5535 - Jun 10, 05:05 UTCJun 10, 05:25 UTC20m
2026-06-08 CUA5535 - Jun 8, 05:05 UTCJun 8, 05:20 UTC15m
2026-06-07 CUA5529 - Jun 7, 11:05 UTCJun 7, 11:20 UTC15m
2026-06-07 CUA5536 - Jun 7, 09:00 UTCJun 7, 09:35 UTC35m
2026-06-07 CUA5535 - Jun 7, 04:55 UTCJun 7, 05:15 UTC20m
2026-06-06 CUA5571 - Jun 6, 00:30 UTCJun 6, 00:40 UTC10m
2026-06-05 CUA5567 - Jun 5, 02:55 UTCJun 5, 03:10 UTC15m
2026-06-03 CUA5391 PKX → LLF Jun 3, 10:50 UTCJun 3, 11:05 UTC15m
2026-05-30 CUA5529 - May 30, 10:50 UTCMay 30, 11:05 UTC15m
2026-05-28 CUA5571 - May 28, 00:00 UTCMay 28, 00:15 UTC15m
2026-05-27 CUA5535 - May 27, 04:55 UTCMay 27, 05:04 UTC10m
2026-05-21 CUA5572 - May 21, 03:35 UTCMay 21, 03:45 UTC10m
2026-05-21 CUA5571 - May 21, 00:25 UTCMay 21, 00:40 UTC15m
2026-05-20 CUA5686 HMI → PKX May 20, 14:40 UTCMay 20, 14:55 UTC15m
2026-05-20 CUA5685 PKX → HMI May 20, 08:00 UTCMay 20, 08:15 UTC15m
2026-05-19 CUA5571 - May 19, 00:15 UTCMay 19, 00:25 UTC10m
2026-05-09 CUA5535 - May 9, 05:00 UTCMay 9, 05:10 UTC10m
2026-05-08 CUA5597 PKX → JMU May 8, 09:30 UTCMay 8, 09:44 UTC15m
2026-05-08 CUA5567 - May 8, 01:49 UTCMay 8, 02:09 UTC20m
2026-05-07 CUA5535 - May 7, 05:05 UTCMay 7, 05:20 UTC15m
2026-05-05 CUA5535 - May 5, 05:00 UTCMay 5, 05:15 UTC15m
2026-05-04 CUA5396 DSN → PKX May 4, 14:35 UTCMay 4, 14:50 UTC15m
2026-05-04 CUA5396 DSN → PKX May 4, 10:10 UTCMay 4, 10:20 UTC10m
2026-04-30 CUA5571 - Apr 30, 00:20 UTCApr 30, 00:30 UTC10m
2026-04-29 CUA5521 PKX → HLD Apr 29, 07:50 UTCApr 29, 08:05 UTC15m
2026-04-28 CUA5521 PKX → HLD Apr 28, 07:45 UTCApr 28, 08:05 UTC20m
2026-04-25 CUA5686 HMI → PKX Apr 25, 14:05 UTCApr 25, 14:20 UTC15m
2026-04-25 CUA5685 PKX → HMI Apr 25, 07:55 UTCApr 25, 08:15 UTC20m
2026-04-23 CUA5571 - Apr 23, 00:15 UTCApr 23, 00:30 UTC15m
2026-04-21 CUA5521 PKX → HLD Apr 21, 08:00 UTCApr 21, 08:10 UTC10m
2026-04-19 CUA5521 PKX → HLD Apr 19, 08:10 UTCApr 19, 08:25 UTC15m

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-5210 page for operator, model, and routing details .

Mode-S 780057 frequently asked

What is Mode-S code 780057?
780057 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-5210.
Where is Mode-S 780057 registered?
Mode-S code 780057 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780057 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780057, octal 36000127, decimal 7,864,407.
What flights does 780057 operate?
Mode-S 780057 has broadcast 14 distinct callsigns, including CUA5535, CUA5571, CUA5521, CUA5597, CUA5567.