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 Jul 26, 20:40 UTC
Flights observed
243
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 20:40 UTC

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 Cathay Pacific 44 2026-07-25
CPA181 Cathay Pacific 31 2026-07-24
CPA178 Cathay Pacific 17 2026-07-23
CPA872 Cathay Pacific 11 2026-06-10
CPA163 Cathay Pacific 11 2026-07-23
CPA873 Cathay Pacific 10 2026-06-11
CPA255 - 9 2026-07-06
CPA250 Cathay Pacific 9 2026-07-08
CPA884 Cathay Pacific 7 2026-07-18
CPA867 Cathay Pacific 6 2026-05-13
CPA581 - 6 2026-07-14
CPA549 Cathay Pacific 6 2026-07-20
CPA885 Cathay Pacific 5 2026-07-18
CPA580 - 5 2026-07-14
CPA665 Cathay Pacific 4 2026-07-26
CPA548 Cathay Pacific 4 2026-07-20
CPA289 - 4 2026-07-13
CPA288 - 4 2026-07-13
CPA810 Cathay Pacific 3 2026-05-13
CPA769 - 3 2026-06-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA698 DEL → HKG Jul 26, 18:00 UTCJul 26, 20:40 UTC2h 40m
2026-07-26 CPA665 HKG → DEL Jul 26, 13:15 UTCJul 26, 16:00 UTC2h 45m
2026-07-26 CPA665 HKG → DEL Jul 26, 10:55 UTCJul 26, 11:10 UTC15m
2026-07-25 CPA100 SYD → HKG Jul 25, 12:55 UTCJul 25, 13:15 UTC20m
2026-07-25 CPA100 SYD → HKG Jul 25, 04:20 UTCJul 25, 11:55 UTC7h 35m
2026-07-24 CPA181 HKG → SYD Jul 24, 17:20 UTCJul 25, 01:35 UTC8h 15m
2026-07-24 CPA754 BKK → HKG Jul 24, 08:10 UTCJul 24, 08:25 UTC15m
2026-07-24 CPA754 BKK → HKG Jul 24, 06:05 UTCJul 24, 06:30 UTC25m
2026-07-24 CPA755 HKG → BKK Jul 24, 03:45 UTCJul 24, 04:20 UTC35m
2026-07-24 CPA755 HKG → BKK Jul 24, 02:00 UTCJul 24, 02:15 UTC15m
2026-07-23 CPA178 MEL → HKG Jul 23, 22:35 UTCJul 23, 22:55 UTC20m
2026-07-23 CPA178 MEL → HKG Jul 23, 21:20 UTCJul 23, 21:40 UTC20m
2026-07-23 CPA178 MEL → HKG Jul 23, 14:05 UTCJul 23, 14:25 UTC20m
2026-07-23 CPA163 HKG → MEL Jul 23, 03:50 UTCJul 23, 11:55 UTC8h 5m
2026-07-22 CPA698 DEL → HKG Jul 22, 18:30 UTCJul 22, 23:15 UTC4h 45m
2026-07-22 CPA665 - Jul 22, 12:40 UTCJul 22, 15:10 UTC2h 30m
2026-07-22 CPA665 - Jul 22, 11:45 UTCJul 22, 11:55 UTC10m
2026-07-21 CPA254 LHR → HKG Jul 21, 22:15 UTCJul 22, 02:20 UTC4h 5m
2026-07-21 CPA253 - Jul 21, 19:50 UTCJul 21, 20:15 UTC25m
2026-07-21 CPA253 - Jul 21, 07:00 UTCJul 21, 07:20 UTC20m
2026-07-20 CPA549 HND → HKG Jul 20, 08:15 UTCJul 20, 11:55 UTC3h 40m
2026-07-20 CPA548 HKG → HND Jul 20, 01:35 UTCJul 20, 05:25 UTC3h 50m
2026-07-18 CPA885 LAX → HKG Jul 18, 23:20 UTCJul 19, 13:00 UTC13h 40m
2026-07-18 CPA884 HKG → LAX Jul 18, 07:45 UTCJul 18, 21:10 UTC13h 25m
2026-07-18 CPA489 TPE → HKG Jul 18, 03:45 UTCJul 18, 05:00 UTC1h 15m
2026-07-18 CPA488 HKG → TPE Jul 18, 00:39 UTCJul 18, 02:00 UTC1h 20m
2026-07-17 CPA138 - Jul 17, 20:44 UTCJul 17, 21:10 UTC25m
2026-07-17 CPA138 - Jul 17, 12:40 UTCJul 17, 19:55 UTC7h 15m
2026-07-17 CPA139 HKG → SYD Jul 17, 02:05 UTCJul 17, 10:50 UTC8h 45m
2026-07-16 CPA234 MXP → HKG Jul 16, 11:15 UTCJul 16, 22:05 UTC10h 50m
2026-07-16 CPA233 - Jul 16, 02:00 UTCJul 16, 06:20 UTC4h 20m
2026-07-15 CPA233 - Jul 15, 17:30 UTCJul 15, 17:50 UTC20m
2026-07-15 CPA100 - Jul 15, 12:40 UTCJul 15, 13:00 UTC20m
2026-07-15 CPA100 - Jul 15, 04:30 UTCJul 15, 11:45 UTC7h 15m
2026-07-14 CPA181 - Jul 14, 18:35 UTCJul 15, 02:05 UTC7h 29m
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

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 Jul 26, 20:40 UTC.
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, CPA163.