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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 Jul 26, 13:00 UTC
Flights observed
211
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 13:00 UTC

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 20 distinct

Callsign Airline Flights Last seen
CPA251 - 27 2026-07-17
CPA830 Cathay Pacific 21 2026-07-23
CPA252 - 21 2026-07-17
CPA831 Cathay Pacific 17 2026-07-23
CPA391 Cathay Pacific 17 2026-07-20
CPA253 Cathay Pacific 17 2026-06-22
CPA881 Cathay Pacific 16 2026-07-25
CPA390 - 16 2026-07-20
CPA880 Cathay Pacific 14 2026-07-24
CPA254 - 13 2026-06-23
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
CPA701 Cathay Pacific 2 2026-07-19
CPA767 Cathay Pacific 1 2026-07-19
CPA766 - 1 2026-07-19
CPA704 - 1 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CPA881 LAX → HKG Jul 25, 22:40 UTCJul 26, 12:45 UTC14h 6m
2026-07-24 CPA880 HKG → LAX Jul 24, 16:20 UTCJul 25, 05:20 UTC13h 0m
2026-07-23 CPA831 JFK → HKG Jul 23, 19:15 UTCJul 24, 10:25 UTC15h 10m
2026-07-23 CPA830 HKG → JFK Jul 23, 01:25 UTCJul 23, 16:30 UTC15h 5m
2026-07-21 CPA881 - Jul 21, 09:00 UTCJul 21, 22:30 UTC13h 30m
2026-07-20 CPA880 HKG → LAX Jul 20, 16:40 UTCJul 21, 05:55 UTC13h 15m
2026-07-20 CPA391 PEK → HKG Jul 20, 07:50 UTCJul 20, 10:40 UTC2h 50m
2026-07-20 CPA390 - Jul 20, 02:10 UTCJul 20, 02:25 UTC15m
2026-07-19 CPA704 - Jul 19, 14:30 UTCJul 19, 14:50 UTC20m
2026-07-19 CPA701 HKG → BKK Jul 19, 10:15 UTCJul 19, 10:40 UTC25m
2026-07-19 CPA701 HKG → BKK Jul 19, 08:25 UTCJul 19, 08:35 UTC10m
2026-07-19 CPA766 - Jul 19, 06:20 UTCJul 19, 06:40 UTC20m
2026-07-19 CPA767 HKG → SGN Jul 19, 00:55 UTCJul 19, 01:15 UTC20m
2026-07-18 CPA391 PEK → HKG Jul 18, 09:55 UTCJul 18, 10:40 UTC45m
2026-07-18 CPA391 PEK → HKG Jul 18, 07:35 UTCJul 18, 07:50 UTC15m
2026-07-18 CPA390 - Jul 18, 01:25 UTCJul 18, 01:45 UTC20m
2026-07-17 CPA252 - Jul 17, 23:05 UTCJul 17, 23:39 UTC35m
2026-07-17 CPA252 - Jul 17, 11:55 UTCJul 17, 16:19 UTC4h 25m
2026-07-17 CPA251 - Jul 17, 00:14 UTCJul 17, 05:25 UTC5h 10m
2026-07-16 CPA251 - Jul 16, 15:35 UTCJul 16, 15:55 UTC20m
2026-07-16 CPA391 - Jul 16, 06:25 UTCJul 16, 09:20 UTC2h 55m
2026-07-16 CPA390 - Jul 16, 02:00 UTCJul 16, 02:15 UTC15m
2026-07-15 CPA391 - Jul 15, 06:25 UTCJul 15, 09:35 UTC3h 10m
2026-07-15 CPA390 - Jul 15, 01:10 UTCJul 15, 01:30 UTC20m
2026-07-14 CPA252 - Jul 14, 11:55 UTCJul 14, 14:45 UTC2h 50m
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

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 Jul 26, 13:00 UTC.
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 20 distinct callsigns, including CPA251, CPA830, CPA252, CPA831, CPA391.