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sensors Mode-S transponder

780A2A

ICAO 24-bit transponder address · allocated to China

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

Hex
780A2A
Octal
36005052
Decimal
7,866,922
Country
CN
Tail
B-KPY
Type
B77W
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
321
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 780A2A.

Country allocation

The ICAO 24-bit address 780A2A 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
CPA663 - 30 2026-07-11
CPA665 Cathay Pacific 24 2026-07-25
CPA660 - 23 2026-07-12
CPA698 Cathay Pacific 21 2026-07-26
CPA870 - 19 2026-07-14
CPA879 - 17 2026-07-14
CPA679 Cathay Pacific 12 2026-07-26
CPA882 Cathay Pacific 11 2026-07-22
CPA319 Cathay Pacific 11 2026-07-24
CPA104 Cathay Pacific 11 2026-07-19
CPA883 Cathay Pacific 9 2026-07-23
CPA694 Cathay Pacific 9 2026-07-26
CPA815 - 8 2026-07-06
CPA139 - 7 2026-06-30
CPA885 Cathay Pacific 6 2026-04-26
CPA740 - 6 2026-06-20
CPA683 Cathay Pacific 6 2026-05-16
CPA316 Cathay Pacific 6 2026-07-24
CPA259 Cathay Pacific 6 2026-05-20
CPA138 Cathay Pacific 6 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA694 DEL → HKG Jul 26, 20:45 UTCJul 26, 22:30 UTC1h 45m
2026-07-26 CPA679 HKG → DEL Jul 26, 14:35 UTCJul 26, 18:50 UTC4h 15m
2026-07-26 CPA679 HKG → DEL Jul 26, 13:45 UTCJul 26, 13:55 UTC10m
2026-07-26 CPA698 DEL → HKG Jul 26, 05:10 UTCJul 26, 10:20 UTC5h 11m
2026-07-25 CPA665 HKG → DEL Jul 25, 13:35 UTCJul 25, 16:20 UTC2h 45m
2026-07-25 CPA665 HKG → DEL Jul 25, 11:20 UTCJul 25, 11:35 UTC15m
2026-07-25 CPA367 PVG → HKG Jul 25, 02:05 UTCJul 25, 07:55 UTC5h 50m
2026-07-24 CPA319 PVG → HKG Jul 24, 05:30 UTCJul 24, 06:55 UTC1h 25m
2026-07-24 CPA316 HKG → PVG Jul 24, 00:25 UTCJul 24, 01:50 UTC1h 25m
2026-07-23 CPA883 LAX → HKG Jul 23, 07:40 UTCJul 23, 21:05 UTC13h 25m
2026-07-22 CPA882 HKG → LAX Jul 22, 11:10 UTCJul 22, 23:55 UTC12h 45m
2026-07-21 CPA698 DEL → HKG Jul 21, 22:10 UTCJul 21, 22:30 UTC20m
2026-07-21 CPA698 DEL → HKG Jul 21, 17:45 UTCJul 21, 20:25 UTC2h 40m
2026-07-21 CPA665 - Jul 21, 11:15 UTCJul 21, 15:30 UTC4h 15m
2026-07-21 CPA665 - Jul 21, 10:25 UTCJul 21, 10:35 UTC10m
2026-07-21 CPA489 TPE → HKG Jul 21, 03:05 UTCJul 21, 04:25 UTC1h 20m
2026-07-21 CPA488 HKG → TPE Jul 21, 00:05 UTCJul 21, 01:35 UTC1h 30m
2026-07-20 CPA698 DEL → HKG Jul 20, 17:40 UTCJul 20, 22:25 UTC4h 45m
2026-07-20 CPA665 - Jul 20, 12:30 UTCJul 20, 15:25 UTC2h 55m
2026-07-20 CPA665 - Jul 20, 10:20 UTCJul 20, 10:30 UTC10m
2026-07-20 CPA367 PVG → HKG Jul 20, 02:30 UTCJul 20, 08:20 UTC5h 50m
2026-07-19 CPA104 MEL → HKG Jul 19, 13:20 UTCJul 19, 13:40 UTC20m
2026-07-19 CPA104 MEL → HKG Jul 19, 05:00 UTCJul 19, 12:35 UTC7h 35m
2026-07-18 CPA105 - Jul 18, 16:50 UTCJul 19, 01:15 UTC8h 25m
2026-07-18 CPA104 - Jul 18, 12:55 UTCJul 18, 13:25 UTC30m
2026-07-18 CPA104 - Jul 18, 11:35 UTCJul 18, 12:10 UTC35m
2026-07-18 CPA104 - Jul 18, 04:45 UTCJul 18, 05:10 UTC25m
2026-07-17 CPA105 HKG → MEL Jul 17, 16:55 UTCJul 18, 01:39 UTC8h 45m
2026-07-17 CPA104 - Jul 17, 12:50 UTCJul 17, 13:05 UTC15m
2026-07-17 CPA104 - Jul 17, 04:44 UTCJul 17, 11:50 UTC7h 5m
2026-07-16 CPA105 - Jul 16, 17:00 UTCJul 17, 01:55 UTC8h 55m
2026-07-16 CPA104 - Jul 16, 12:40 UTCJul 16, 13:05 UTC25m
2026-07-16 CPA104 - Jul 16, 04:45 UTCJul 16, 11:50 UTC7h 5m
2026-07-15 CPA105 HKG → MEL Jul 15, 16:45 UTCJul 16, 01:40 UTC8h 55m
2026-07-14 CPA879 - Jul 14, 22:00 UTCJul 15, 11:05 UTC13h 4m
2026-07-14 CPA870 - Jul 14, 06:05 UTCJul 14, 19:05 UTC13h 0m
2026-07-13 CPA694 DEL → HKG Jul 13, 20:15 UTCJul 14, 01:10 UTC4h 55m
2026-07-13 CPA679 - Jul 13, 14:25 UTCJul 13, 18:10 UTC3h 45m
2026-07-13 CPA679 - Jul 13, 13:25 UTCJul 13, 13:40 UTC15m
2026-07-12 CPA879 - Jul 12, 21:25 UTCJul 13, 10:35 UTC13h 10m
2026-07-12 CPA870 - Jul 12, 06:05 UTCJul 12, 18:20 UTC12h 15m
2026-07-12 CPA660 - Jul 12, 01:40 UTCJul 12, 02:15 UTC35m
2026-07-11 CPA660 - Jul 11, 20:40 UTCJul 12, 00:01 UTC3h 20m
2026-07-11 CPA663 - Jul 11, 18:00 UTCJul 11, 18:10 UTC10m
2026-07-11 CPA663 - Jul 11, 15:05 UTCJul 11, 16:45 UTC1h 40m
2026-07-11 CPA663 - Jul 11, 13:00 UTCJul 11, 13:10 UTC10m
2026-07-11 CPA879 - Jul 11, 10:25 UTCJul 11, 10:40 UTC15m
2026-07-10 CPA879 - Jul 10, 21:35 UTCJul 11, 09:55 UTC12h 20m
2026-07-10 CPA870 - Jul 10, 05:45 UTCJul 10, 18:05 UTC12h 20m
2026-07-10 CPA660 - Jul 10, 01:45 UTCJul 10, 02:10 UTC25m

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-KPY page for operator, model, and routing details .

Mode-S 780A2A frequently asked

What is Mode-S code 780A2A?
780A2A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KPY.
Where is Mode-S 780A2A registered?
Mode-S code 780A2A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A2A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A2A, octal 36005052, decimal 7,866,922.
What flights does 780A2A operate?
Mode-S 780A2A has broadcast 20 distinct callsigns, including CPA663, CPA665, CPA660, CPA698, CPA870.