Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

780C87

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-1990 · BOEING 737-800

Hex
780C87
Octal
36006207
Decimal
7,867,527
Country
CN
Tail
B-1990
Type
B738
No current signal · last broadcast 14h ago
Flights observed
63
Distinct callsigns
20
Country
CN
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 780C87.

Country allocation

The ICAO 24-bit address 780C87 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
CUA5579 - 6 2026-07-10
CUA5638 - 5 2026-06-26
CUA5509 - 5 2026-07-14
CUA5685 - 4 2026-06-25
CUA5630 - 4 2026-07-06
CUA2320 China United Airlines 4 2026-05-29
CUA2319 China United Airlines 4 2026-05-29
CUA5686 - 3 2026-06-25
CUA2819 China United Airlines 3 2026-07-21
CUA5597 - 2 2026-06-29
CUA5535 - 2 2026-07-17
CUA5510 - 2 2026-07-15
CUA2930 China United Airlines 2 2026-05-30
CUA2929 China United Airlines 2 2026-05-30
CUA5890 China United Airlines 1 2026-06-10
CUA5811 China United Airlines 1 2026-06-06
CUA5622 China United Airlines 1 2026-07-19
CUA5598 - 1 2026-06-29
CUA5580 China United Airlines 1 2026-06-12
CUA5576 - 1 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 CUA2819 DSN → NKG Jul 21, 23:35 UTCJul 21, 23:45 UTC10m
2026-07-20 CUA2819 DSN → NKG Jul 20, 23:50 UTCJul 21, 23:45 UTC23h 55m
2026-07-20 CUA2819 DSN → NKG Jul 20, 23:40 UTCJul 21, 00:00 UTC20m
2026-07-19 CUA5622 LHW → PKX Jul 19, 13:00 UTCJul 19, 13:10 UTC10m
2026-07-18 CUA5569 - Jul 18, 01:50 UTCJul 18, 02:00 UTC10m
2026-07-17 CUA5521 PKX → HLD Jul 17, 10:40 UTCJul 17, 10:55 UTC15m
2026-07-17 CUA5535 - Jul 17, 04:59 UTCJul 17, 05:15 UTC15m
2026-07-16 CUA5535 - Jul 16, 05:05 UTCJul 16, 05:20 UTC15m
2026-07-15 CUA5510 - Jul 15, 04:20 UTCJul 15, 04:30 UTC10m
2026-07-14 CUA5509 - Jul 14, 23:20 UTCJul 14, 23:30 UTC10m
2026-07-11 CUA5576 - Jul 11, 10:30 UTCJul 11, 17:30 UTC7h 0m
2026-07-10 CUA5579 - Jul 10, 23:35 UTCJul 10, 23:45 UTC10m
2026-07-10 CUA5530 - Jul 10, 15:10 UTCJul 10, 15:25 UTC15m
2026-07-10 CUA5529 - Jul 10, 10:40 UTCJul 10, 10:50 UTC10m
2026-07-09 CUA5575 - Jul 9, 09:45 UTCJul 9, 10:00 UTC15m
2026-07-07 CUA5159 - Jul 7, 08:45 UTCJul 7, 08:55 UTC10m
2026-07-06 CUA5630 - Jul 6, 14:25 UTCJul 6, 14:40 UTC15m
2026-07-04 CUA5630 - Jul 4, 14:15 UTCJul 4, 14:25 UTC10m
2026-07-03 CUA5630 - Jul 3, 13:50 UTCJul 3, 14:25 UTC35m
2026-06-29 CUA5598 - Jun 29, 14:09 UTCJun 29, 14:19 UTC10m
2026-06-29 CUA5597 - Jun 29, 09:29 UTCJun 29, 09:40 UTC10m
2026-06-26 CUA5638 - Jun 26, 11:09 UTCJun 26, 11:24 UTC15m
2026-06-25 CUA5686 - Jun 25, 14:59 UTCJun 25, 15:10 UTC10m
2026-06-25 CUA5685 - Jun 25, 08:40 UTCJun 25, 08:55 UTC15m
2026-06-24 CUA5567 - Jun 24, 02:54 UTCJun 24, 03:10 UTC15m
2026-06-21 CUA5509 PKX → JXA Jun 21, 23:24 UTCJun 21, 23:34 UTC10m
2026-06-21 CUA5686 HMI → PKX Jun 21, 14:19 UTCJun 21, 14:34 UTC15m
2026-06-21 CUA5685 - Jun 21, 07:55 UTCJun 21, 08:20 UTC25m
2026-06-15 CUA5251 - Jun 15, 12:30 UTCJun 15, 13:50 UTC1h 20m
2026-06-13 CUA5361 PKX → HUZ Jun 13, 02:50 UTCJun 13, 03:05 UTC15m
2026-06-12 CUA5638 LHW → PKX Jun 12, 11:15 UTCJun 12, 11:30 UTC15m
2026-06-12 CUA5580 YNJ → PKX Jun 12, 04:40 UTCJun 12, 04:50 UTC10m
2026-06-12 CUA5579 PKX → YNJ Jun 12, 00:25 UTCJun 12, 00:35 UTC11m
2026-06-11 CUA5686 HMI → PKX Jun 11, 14:30 UTCJun 11, 14:45 UTC15m
2026-06-11 CUA5685 PKX → HMI Jun 11, 08:00 UTCJun 11, 08:25 UTC25m
2026-06-10 CUA5890 ZHA → PKX Jun 10, 13:35 UTCJun 10, 13:50 UTC15m
2026-06-09 CUA5597 PKX → JMU Jun 9, 02:05 UTCJun 9, 02:15 UTC10m
2026-06-08 CUA5579 PKX → YNJ Jun 8, 00:25 UTCJun 8, 00:40 UTC15m
2026-06-06 CUA5811 PKX → HAK Jun 6, 06:15 UTCJun 6, 11:05 UTC4h 50m
2026-05-30 CUA2930 HLD → SJW May 30, 09:05 UTCMay 30, 09:15 UTC10m
2026-05-30 CUA2929 PVG → SJW May 30, 04:35 UTCMay 30, 04:50 UTC15m
2026-05-29 CUA2320 DBC → SJW May 29, 10:35 UTCMay 29, 10:45 UTC10m
2026-05-29 CUA2319 SJW → DBC May 29, 07:05 UTCMay 29, 07:20 UTC15m
2026-05-28 CUA2930 HLD → SJW May 28, 08:55 UTCMay 28, 09:05 UTC10m
2026-05-28 CUA2929 PVG → SJW May 28, 04:20 UTCMay 28, 04:35 UTC15m
2026-05-27 CUA5638 LHW → PKX May 27, 10:55 UTCMay 27, 11:10 UTC15m
2026-05-27 CUA5579 PKX → YNJ May 27, 00:25 UTCMay 27, 00:34 UTC10m
2026-05-21 CUA2320 DBC → SJW May 21, 10:30 UTCMay 21, 10:45 UTC15m
2026-05-21 CUA2319 SJW → DBC May 21, 07:00 UTCMay 21, 07:15 UTC15m
2026-05-04 CUA2320 DBC → SJW May 4, 10:30 UTCMay 4, 10:50 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-1990 page for operator, model, and routing details .

Mode-S 780C87 frequently asked

What is Mode-S code 780C87?
780C87 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-1990.
Where is Mode-S 780C87 registered?
Mode-S code 780C87 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780C87 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780C87, octal 36006207, decimal 7,867,527.
What flights does 780C87 operate?
Mode-S 780C87 has broadcast 20 distinct callsigns, including CUA5579, CUA5638, CUA5509, CUA5685, CUA5630.