Apparatus

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sensors Mode-S transponder

780E00

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1523 · BOEING 737-800

Hex
780E00
Octal
36007000
Decimal
7,867,904
Country
CN
Tail
B-1523
Type
B738
Broadcasting now · callsign CUA5879 · 17,750 ft
Flights observed
60
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 05:10 UTC

Current position

780E00 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 780E00 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
CUA2320 - 7 2026-07-06
CUA2319 - 5 2026-07-06
CUA5597 - 4 2026-07-11
CUA5579 - 4 2026-06-28
CUA2929 - 4 2026-07-05
CUA5638 China United Airlines 3 2026-07-25
CUA5630 - 3 2026-07-21
CUA5567 - 3 2026-07-18
CUA2930 - 3 2026-07-05
CUA5525 - 2 2026-06-24
CUA5158 China United Airlines 2 2026-07-24
CUA5968 - 1 2026-06-20
CUA5851 China United Airlines 1 2026-05-29
CUA5686 China United Airlines 1 2026-06-23
CUA5685 - 1 2026-06-23
CUA5680 China United Airlines 1 2026-07-25
CUA5679 China United Airlines 1 2026-07-25
CUA5651 - 1 2026-06-24
CUA5637 China United Airlines 1 2026-07-25
CUA5629 - 1 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CUA2995 KMG → BAR Jul 26, 05:00 UTCJul 26, 05:10 UTC10m
2026-07-25 CUA5638 LHW → PKX Jul 25, 11:00 UTCJul 25, 11:10 UTC10m
2026-07-25 CUA5637 PKX → LHW Jul 25, 06:50 UTCJul 25, 07:00 UTC10m
2026-07-25 CUA5680 AKA → PKX Jul 25, 04:20 UTCJul 25, 04:55 UTC35m
2026-07-25 CUA5679 PKX → AKA Jul 25, 00:30 UTCJul 25, 00:50 UTC20m
2026-07-24 CUA5158 TFU → PKX Jul 24, 15:40 UTCJul 24, 16:15 UTC35m
2026-07-21 CUA5630 - Jul 21, 14:50 UTCJul 21, 15:00 UTC10m
2026-07-21 CUA5629 - Jul 21, 09:40 UTCJul 21, 09:55 UTC15m
2026-07-21 CUA5569 PKX → DQA Jul 21, 01:50 UTCJul 21, 02:00 UTC10m
2026-07-20 CUA5290 - Jul 20, 03:20 UTCJul 20, 04:10 UTC50m
2026-07-18 CUA5567 - Jul 18, 02:55 UTCJul 18, 03:10 UTC15m
2026-07-12 CUA5630 - Jul 12, 13:40 UTCJul 12, 13:55 UTC15m
2026-07-11 CUA5597 - Jul 11, 12:40 UTCJul 11, 18:15 UTC5h 35m
2026-07-08 CUA5598 - Jul 8, 14:35 UTCJul 8, 14:45 UTC10m
2026-07-08 CUA5597 - Jul 8, 09:35 UTCJul 8, 09:45 UTC10m
2026-07-08 CUA5567 - Jul 8, 01:55 UTCJul 8, 02:10 UTC15m
2026-07-07 CUA5532 - Jul 7, 17:00 UTCJul 7, 17:10 UTC10m
2026-07-07 CUA5531 - Jul 7, 12:40 UTCJul 7, 12:55 UTC15m
2026-07-07 CUA5536 - Jul 7, 09:00 UTCJul 7, 09:25 UTC25m
2026-07-07 CUA5535 - Jul 7, 04:55 UTCJul 7, 05:15 UTC20m
2026-07-06 CUA2320 - Jul 6, 10:25 UTCJul 6, 10:40 UTC15m
2026-07-06 CUA2319 - Jul 6, 07:05 UTCJul 6, 07:15 UTC10m
2026-07-05 CUA2930 - Jul 5, 10:00 UTCJul 5, 10:10 UTC10m
2026-07-05 CUA2929 - Jul 5, 04:30 UTCJul 5, 04:45 UTC15m
2026-07-04 CUA2320 - Jul 4, 11:15 UTCJul 4, 11:30 UTC15m
2026-07-04 CUA2319 - Jul 4, 07:55 UTCJul 4, 08:10 UTC15m
2026-07-03 CUA2929 - Jul 3, 04:55 UTCJul 3, 05:10 UTC15m
2026-07-02 CUA2320 - Jul 2, 10:35 UTCJul 2, 10:50 UTC15m
2026-07-01 CUA2930 - Jul 1, 09:25 UTCJul 1, 09:40 UTC15m
2026-07-01 CUA2929 - Jul 1, 05:00 UTCJul 1, 05:10 UTC10m
2026-06-29 CUA2930 - Jun 29, 08:44 UTCJun 29, 08:54 UTC10m
2026-06-29 CUA2929 - Jun 29, 04:25 UTCJun 29, 04:39 UTC15m
2026-06-28 CUA5638 - Jun 28, 11:45 UTCJun 28, 11:55 UTC10m
2026-06-28 CUA5579 - Jun 28, 00:20 UTCJun 28, 00:30 UTC10m
2026-06-27 CUA5159 PKX → TFU Jun 27, 07:55 UTCJun 27, 08:20 UTC25m
2026-06-25 CUA5597 - Jun 25, 10:20 UTCJun 25, 10:30 UTC10m
2026-06-24 CUA5651 - Jun 24, 06:10 UTCJun 24, 14:50 UTC8h 40m
2026-06-24 CUA5525 - Jun 24, 00:20 UTCJun 24, 00:34 UTC15m
2026-06-23 CUA5686 HMI → PKX Jun 23, 14:10 UTCJun 23, 14:25 UTC15m
2026-06-23 CUA5685 - Jun 23, 08:00 UTCJun 23, 08:25 UTC25m
2026-06-22 CUA5525 - Jun 22, 00:24 UTCJun 22, 00:34 UTC10m
2026-06-21 CUA5597 - Jun 21, 09:35 UTCJun 21, 09:44 UTC10m
2026-06-21 CUA5567 - Jun 21, 02:45 UTCJun 21, 03:00 UTC15m
2026-06-20 CUA5968 - Jun 20, 10:55 UTCJun 20, 11:05 UTC10m
2026-06-19 CUA5630 XNN → PKX Jun 19, 15:34 UTCJun 19, 15:49 UTC15m
2026-06-12 CUA5509 PKX → JXA Jun 12, 23:10 UTCJun 12, 23:25 UTC15m
2026-06-12 CUA5158 - Jun 12, 15:50 UTCJun 12, 16:05 UTC15m
2026-06-10 CUA5579 PKX → YNJ Jun 10, 00:20 UTCJun 10, 00:35 UTC15m
2026-06-08 CUA2320 DBC → SJW Jun 8, 11:10 UTCJun 8, 11:25 UTC15m
2026-06-08 CUA2319 SJW → DBC Jun 8, 07:40 UTCJun 8, 08:10 UTC30m

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-1523 page for operator, model, and routing details .

Mode-S 780E00 frequently asked

What is Mode-S code 780E00?
780E00 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1523.
Where is Mode-S 780E00 registered?
Mode-S code 780E00 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780E00 broadcasting right now?
Yes. Mode-S 780E00 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780E00, octal 36007000, decimal 7,867,904.
What flights does 780E00 operate?
Mode-S 780E00 has broadcast 20 distinct callsigns, including CUA2320, CUA2319, CUA5597, CUA5579, CUA2929.