Apparatus

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sensors Mode-S transponder

780A19

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-KPX · BOEING 777-300ER

Hex
780A19
Octal
36005031
Decimal
7,866,905
Country
CN
Tail
B-KPX
Type
B77W
No current signal · last broadcast 2h ago
Flights observed
208
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 780A19.

Country allocation

The ICAO 24-bit address 780A19 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
CPA100 - 40 2026-07-03
CPA181 - 29 2026-07-14
CPA178 Cathay Pacific 14 2026-06-19
CPA872 Cathay Pacific 11 2026-06-10
CPA873 Cathay Pacific 10 2026-06-11
CPA163 - 10 2026-06-19
CPA255 - 9 2026-07-06
CPA250 Cathay Pacific 9 2026-07-08
CPA884 - 6 2026-07-08
CPA867 Cathay Pacific 6 2026-05-13
CPA581 - 6 2026-07-14
CPA580 - 5 2026-07-14
CPA549 - 5 2026-07-10
CPA885 - 4 2026-07-08
CPA289 - 4 2026-07-13
CPA288 - 4 2026-07-13
CPA810 Cathay Pacific 3 2026-05-13
CPA769 - 3 2026-06-24
CPA764 Cathay Pacific 3 2026-06-24
CPA548 - 3 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CPA181 - Jul 14, 17:35 UTCJul 14, 17:55 UTC20m
2026-07-14 CPA581 - Jul 14, 08:35 UTCJul 14, 12:55 UTC4h 20m
2026-07-14 CPA580 - Jul 14, 02:20 UTCJul 14, 07:05 UTC4h 45m
2026-07-13 CPA288 - Jul 13, 22:35 UTCJul 13, 23:10 UTC35m
2026-07-13 CPA288 - Jul 13, 12:05 UTCJul 13, 15:35 UTC3h 30m
2026-07-13 CPA289 - Jul 13, 00:30 UTCJul 13, 04:50 UTC4h 20m
2026-07-12 CPA289 - Jul 12, 16:20 UTCJul 12, 16:40 UTC20m
2026-07-12 CPA581 - Jul 12, 08:20 UTCJul 12, 12:35 UTC4h 15m
2026-07-12 CPA580 - Jul 12, 01:40 UTCJul 12, 06:10 UTC4h 30m
2026-07-11 CPA234 ZGN → HKG Jul 11, 22:10 UTCJul 11, 22:50 UTC40m
2026-07-11 CPA234 - Jul 11, 11:50 UTCJul 11, 15:15 UTC3h 25m
2026-07-10 CPA233 - Jul 10, 17:20 UTCJul 11, 05:50 UTC12h 31m
2026-07-10 CPA549 - Jul 10, 07:50 UTCJul 10, 11:30 UTC3h 40m
2026-07-10 CPA548 HKG → HND Jul 10, 01:25 UTCJul 10, 05:10 UTC3h 45m
2026-07-08 CPA885 - Jul 8, 23:10 UTCJul 9, 13:10 UTC14h 0m
2026-07-08 CPA884 HKG → LAX Jul 8, 07:45 UTCJul 8, 20:30 UTC12h 45m
2026-07-08 CPA250 LHR → HKG Jul 8, 04:55 UTCJul 8, 05:20 UTC25m
2026-07-07 CPA250 LHR → HKG Jul 7, 17:55 UTCJul 7, 22:05 UTC4h 10m
2026-07-06 CPA255 - Jul 6, 23:55 UTCJul 7, 05:15 UTC5h 20m
2026-07-06 CPA255 - Jul 6, 15:45 UTCJul 6, 16:00 UTC15m
2026-07-06 CPA583 - Jul 6, 08:40 UTCJul 6, 13:05 UTC4h 25m
2026-07-06 CPA582 HKG → CTS Jul 6, 02:40 UTCJul 6, 07:10 UTC4h 30m
2026-07-03 CPA100 SYD → HKG Jul 3, 04:20 UTCJul 3, 13:10 UTC8h 50m
2026-07-02 CPA181 HKG → SYD Jul 2, 17:30 UTCJul 3, 01:45 UTC8h 15m
2026-07-02 CPA100 - Jul 2, 12:50 UTCJul 2, 13:15 UTC25m
2026-07-02 CPA100 - Jul 2, 11:30 UTCJul 2, 12:05 UTC35m
2026-07-02 CPA100 - Jul 2, 04:20 UTCJul 2, 04:45 UTC25m
2026-07-01 CPA181 HKG → SYD Jul 1, 17:00 UTCJul 2, 01:05 UTC8h 5m
2026-07-01 CPA100 SYD → HKG Jul 1, 04:20 UTCJul 1, 13:10 UTC8h 50m
2026-06-30 CPA181 HKG → SYD Jun 30, 17:00 UTCJul 1, 01:20 UTC8h 20m
2026-06-30 CPA100 - Jun 30, 12:55 UTCJun 30, 13:10 UTC15m
2026-06-30 CPA100 - Jun 30, 04:25 UTCJun 30, 12:05 UTC7h 40m
2026-06-29 CPA181 HKG → SYD Jun 29, 17:14 UTCJun 30, 01:40 UTC8h 26m
2026-06-29 CPA100 SYD → HKG Jun 29, 04:20 UTCJun 29, 13:14 UTC8h 55m
2026-06-28 CPA181 HKG → SYD Jun 28, 17:10 UTCJun 29, 01:25 UTC8h 15m
2026-06-28 CPA100 - Jun 28, 12:55 UTCJun 28, 13:10 UTC15m
2026-06-28 CPA100 - Jun 28, 04:25 UTCJun 28, 12:05 UTC7h 40m
2026-06-27 CPA181 HKG → SYD Jun 27, 18:15 UTCJun 28, 01:44 UTC7h 30m
2026-06-27 CPA181 HKG → SYD Jun 27, 17:14 UTCJun 27, 17:29 UTC15m
2026-06-27 CPA100 SYD → HKG Jun 27, 04:19 UTCJun 27, 13:04 UTC8h 45m
2026-06-26 CPA181 HKG → SYD Jun 26, 17:09 UTCJun 27, 01:35 UTC8h 25m
2026-06-26 CPA100 - Jun 26, 04:14 UTCJun 26, 13:10 UTC8h 55m
2026-06-25 CPA181 HKG → SYD Jun 25, 17:20 UTCJun 26, 01:29 UTC8h 10m
2026-06-25 CPA100 - Jun 25, 04:14 UTCJun 25, 13:09 UTC8h 55m
2026-06-24 CPA181 HKG → SYD Jun 24, 16:59 UTCJun 25, 01:09 UTC8h 10m
2026-06-24 CPA764 SGN → HKG Jun 24, 14:00 UTCJun 24, 14:20 UTC20m
2026-06-24 CPA769 - Jun 24, 08:14 UTCJun 24, 08:30 UTC15m
2026-06-23 CPA100 SYD → HKG Jun 23, 04:25 UTCJun 23, 13:24 UTC9h 0m
2026-06-22 CPA181 HKG → SYD Jun 22, 16:54 UTCJun 23, 01:20 UTC8h 25m
2026-06-22 CPA100 - Jun 22, 12:44 UTCJun 22, 12:59 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-KPX page for operator, model, and routing details .

Mode-S 780A19 frequently asked

What is Mode-S code 780A19?
780A19 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KPX.
Where is Mode-S 780A19 registered?
Mode-S code 780A19 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A19 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A19, octal 36005031, decimal 7,866,905.
What flights does 780A19 operate?
Mode-S 780A19 has broadcast 20 distinct callsigns, including CPA100, CPA181, CPA178, CPA872, CPA873.