Apparatus

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sensors Mode-S transponder

780A17

ICAO 24-bit transponder address · allocated to China

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

Hex
780A17
Octal
36005027
Decimal
7,866,903
Country
CN
Tail
B-KPV
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
186
Distinct callsigns
19
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 780A17.

Country allocation

The ICAO 24-bit address 780A17 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 19 distinct

Callsign Airline Flights Last seen
CPA251 - 25 2026-07-13
CPA830 Cathay Pacific 20 2026-06-30
CPA252 - 18 2026-07-12
CPA253 Cathay Pacific 17 2026-06-22
CPA831 - 16 2026-06-30
CPA881 Cathay Pacific 14 2026-07-06
CPA254 - 13 2026-06-23
CPA880 Cathay Pacific 12 2026-07-05
CPA391 - 12 2026-07-11
CPA390 - 12 2026-07-11
CPA139 - 5 2026-07-10
CPA138 - 5 2026-07-10
CPA883 Cathay Pacific 4 2026-05-19
CPA234 Cathay Pacific 4 2026-05-29
CPA882 Cathay Pacific 3 2026-05-18
CPA233 Cathay Pacific 3 2026-05-28
CPA377 - 1 2026-07-13
CPA105 Cathay Pacific 1 2026-06-19
CPA104 - 1 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CPA251 - Jul 13, 20:05 UTCJul 14, 04:25 UTC8h 20m
2026-07-13 CPA251 - Jul 13, 15:05 UTCJul 13, 15:20 UTC15m
2026-07-13 CPA377 HKG → HKG Jul 13, 03:05 UTCJul 13, 08:55 UTC5h 50m
2026-07-12 CPA252 - Jul 12, 22:40 UTCJul 12, 23:00 UTC20m
2026-07-12 CPA252 - Jul 12, 11:40 UTCJul 12, 15:45 UTC4h 5m
2026-07-11 CPA251 - Jul 11, 20:00 UTCJul 12, 04:20 UTC8h 20m
2026-07-11 CPA251 - Jul 11, 15:05 UTCJul 11, 15:25 UTC20m
2026-07-11 CPA391 - Jul 11, 06:10 UTCJul 11, 09:05 UTC2h 55m
2026-07-11 CPA390 - Jul 11, 01:20 UTCJul 11, 01:35 UTC15m
2026-07-10 CPA138 SYD → HKG Jul 10, 12:15 UTCJul 10, 21:00 UTC8h 45m
2026-07-10 CPA139 - Jul 10, 02:50 UTCJul 10, 10:20 UTC7h 30m
2026-07-10 CPA139 - Jul 10, 01:50 UTCJul 10, 02:05 UTC15m
2026-07-09 CPA138 - Jul 9, 20:40 UTCJul 9, 21:00 UTC20m
2026-07-09 CPA138 - Jul 9, 12:10 UTCJul 9, 19:45 UTC7h 35m
2026-07-09 CPA139 HKG → SYD Jul 9, 01:25 UTCJul 9, 09:35 UTC8h 10m
2026-07-08 CPA138 - Jul 8, 21:10 UTCJul 8, 21:25 UTC15m
2026-07-08 CPA138 - Jul 8, 12:15 UTCJul 8, 20:20 UTC8h 5m
2026-07-08 CPA139 - Jul 8, 02:40 UTCJul 8, 09:35 UTC6h 55m
2026-07-08 CPA139 - Jul 8, 01:35 UTCJul 8, 01:50 UTC15m
2026-07-07 CPA391 - Jul 7, 11:35 UTCJul 7, 12:20 UTC45m
2026-07-07 CPA391 - Jul 7, 09:10 UTCJul 7, 09:30 UTC20m
2026-07-07 CPA390 - Jul 7, 02:15 UTCJul 7, 02:30 UTC15m
2026-07-06 CPA881 LAX → HKG Jul 6, 08:35 UTCJul 6, 22:35 UTC14h 0m
2026-07-05 CPA880 HKG → LAX Jul 5, 16:15 UTCJul 6, 04:45 UTC12h 30m
2026-07-04 CPA252 LHR → HKG Jul 4, 11:40 UTCJul 4, 23:20 UTC11h 40m
2026-07-03 CPA251 HKG → LHR Jul 3, 23:40 UTCJul 4, 04:50 UTC5h 10m
2026-07-03 CPA251 HKG → LHR Jul 3, 15:35 UTCJul 3, 15:50 UTC15m
2026-07-03 CPA391 - Jul 3, 06:45 UTCJul 3, 07:00 UTC15m
2026-07-03 CPA390 - Jul 3, 02:25 UTCJul 3, 02:45 UTC20m
2026-07-02 CPA881 LAX → HKG Jul 2, 08:40 UTCJul 2, 22:20 UTC13h 40m
2026-07-01 CPA880 HKG → LAX Jul 1, 16:40 UTCJul 2, 05:00 UTC12h 20m
2026-06-30 CPA831 - Jun 30, 19:30 UTCJul 1, 10:30 UTC15h 0m
2026-06-30 CPA830 HKG → JFK Jun 30, 02:15 UTCJun 30, 17:25 UTC15h 10m
2026-06-29 CPA252 LHR → HKG Jun 29, 12:00 UTCJun 29, 23:34 UTC11h 35m
2026-06-28 CPA251 HKG → LHR Jun 28, 23:50 UTCJun 29, 04:45 UTC4h 55m
2026-06-28 CPA251 HKG → LHR Jun 28, 15:24 UTCJun 28, 15:40 UTC15m
2026-06-27 CPA831 JFK → HKG Jun 27, 20:09 UTCJun 28, 11:25 UTC15h 15m
2026-06-27 CPA830 HKG → JFK Jun 27, 03:30 UTCJun 27, 17:55 UTC14h 25m
2026-06-27 CPA830 HKG → JFK Jun 27, 02:50 UTCJun 27, 02:59 UTC10m
2026-06-26 CPA391 - Jun 26, 07:05 UTCJun 26, 09:50 UTC2h 45m
2026-06-26 CPA390 - Jun 26, 02:30 UTCJun 26, 02:44 UTC15m
2026-06-25 CPA252 LHR → HKG Jun 25, 22:54 UTCJun 25, 23:19 UTC25m
2026-06-25 CPA252 LHR → HKG Jun 25, 11:44 UTCJun 25, 16:09 UTC4h 25m
2026-06-24 CPA251 HKG → LHR Jun 24, 23:50 UTCJun 25, 01:09 UTC1h 20m
2026-06-24 CPA251 HKG → LHR Jun 24, 15:29 UTCJun 24, 15:44 UTC15m
2026-06-23 CPA254 - Jun 23, 08:45 UTCJun 23, 09:14 UTC30m
2026-06-22 CPA254 - Jun 22, 21:30 UTCJun 23, 01:50 UTC4h 20m
2026-06-22 CPA253 HKG → LHR Jun 22, 14:05 UTCJun 22, 19:14 UTC5h 10m
2026-06-22 CPA253 HKG → LHR Jun 22, 05:40 UTCJun 22, 05:54 UTC15m
2026-06-21 CPA881 LAX → HKG Jun 21, 22:15 UTCJun 21, 22:29 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-KPV page for operator, model, and routing details .

Mode-S 780A17 frequently asked

What is Mode-S code 780A17?
780A17 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KPV.
Where is Mode-S 780A17 registered?
Mode-S code 780A17 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A17 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A17, octal 36005027, decimal 7,866,903.
What flights does 780A17 operate?
Mode-S 780A17 has broadcast 19 distinct callsigns, including CPA251, CPA830, CPA252, CPA253, CPA831.