Apparatus

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sensors Mode-S transponder

780A2B

ICAO 24-bit transponder address · allocated to China

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

Hex
780A2B
Octal
36005053
Decimal
7,866,923
Country
CN
Tail
B-KPZ
Type
B77W
No current signal · last broadcast 2h ago
Flights observed
89
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 780A2B.

Country allocation

The ICAO 24-bit address 780A2B 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
CPA234 - 7 2026-07-09
CPA233 - 7 2026-07-08
CPA255 - 6 2026-07-11
CPA250 - 6 2026-07-13
CPA885 - 5 2026-07-11
CPA581 - 4 2026-07-08
CPA580 - 4 2026-07-08
CPA884 - 3 2026-07-10
CPA696 Cathay Pacific 3 2026-04-14
CPA683 Cathay Pacific 3 2026-04-14
CPA867 - 2 2026-06-29
CPA810 Cathay Pacific 2 2026-06-28
CPA743 - 2 2026-06-30
CPA742 - 2 2026-06-30
CPA698 - 2 2026-07-13
CPA665 - 2 2026-07-13
CPA583 - 2 2026-07-02
CPA3820 - 2 2026-04-15
CPA319 - 2 2026-06-30
CPA253 Cathay Pacific 2 2026-07-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CPA489 TPE → HKG Jul 14, 03:30 UTCJul 14, 04:50 UTC1h 20m
2026-07-14 CPA488 HKG → TPE Jul 14, 00:25 UTCJul 14, 01:40 UTC1h 15m
2026-07-13 CPA698 - Jul 13, 22:05 UTCJul 13, 22:35 UTC30m
2026-07-13 CPA698 - Jul 13, 17:35 UTCJul 13, 20:20 UTC2h 45m
2026-07-13 CPA665 - Jul 13, 12:30 UTCJul 13, 15:10 UTC2h 40m
2026-07-13 CPA665 - Jul 13, 10:30 UTCJul 13, 10:40 UTC10m
2026-07-13 CPA250 - Jul 13, 05:40 UTCJul 13, 06:15 UTC35m
2026-07-12 CPA250 - Jul 12, 18:15 UTCJul 12, 22:35 UTC4h 20m
2026-07-11 CPA255 - Jul 11, 20:30 UTCJul 12, 05:05 UTC8h 35m
2026-07-11 CPA255 - Jul 11, 15:30 UTCJul 11, 15:50 UTC20m
2026-07-11 CPA885 - Jul 11, 10:40 UTCJul 11, 10:55 UTC15m
2026-07-10 CPA885 - Jul 10, 21:10 UTCJul 11, 10:10 UTC13h 0m
2026-07-10 CPA884 - Jul 10, 05:20 UTCJul 10, 18:10 UTC12h 50m
2026-07-09 CPA234 - Jul 9, 21:25 UTCJul 9, 21:55 UTC30m
2026-07-09 CPA234 - Jul 9, 11:10 UTCJul 9, 14:40 UTC3h 30m
2026-07-08 CPA233 - Jul 8, 17:50 UTCJul 9, 06:20 UTC12h 30m
2026-07-08 CPA581 - Jul 8, 07:55 UTCJul 8, 12:20 UTC4h 25m
2026-07-08 CPA580 - Jul 8, 01:50 UTCJul 8, 06:10 UTC4h 20m
2026-07-07 CPA234 MXP → HKG Jul 7, 22:00 UTCJul 7, 22:35 UTC35m
2026-07-07 CPA234 MXP → HKG Jul 7, 11:35 UTCJul 7, 15:10 UTC3h 35m
2026-07-07 CPA233 HKG → MXP Jul 7, 01:30 UTCJul 7, 05:45 UTC4h 15m
2026-07-06 CPA233 HKG → MXP Jul 6, 17:10 UTCJul 6, 17:25 UTC15m
2026-07-05 CPA254 - Jul 5, 21:50 UTCJul 6, 09:40 UTC11h 50m
2026-07-05 CPA253 HKG → LHR Jul 5, 14:20 UTCJul 5, 19:35 UTC5h 15m
2026-07-05 CPA253 HKG → LHR Jul 5, 06:10 UTCJul 5, 06:25 UTC15m
2026-07-04 CPA234 MXP → HKG Jul 4, 21:50 UTCJul 4, 22:15 UTC25m
2026-07-04 CPA234 MXP → HKG Jul 4, 11:20 UTCJul 4, 14:55 UTC3h 35m
2026-07-03 CPA233 HKG → MXP Jul 3, 23:40 UTCJul 4, 07:05 UTC7h 25m
2026-07-03 CPA233 HKG → MXP Jul 3, 18:35 UTCJul 3, 18:55 UTC20m
2026-07-02 CPA583 - Jul 2, 12:55 UTCJul 2, 13:20 UTC25m
2026-07-02 CPA583 - Jul 2, 08:35 UTCJul 2, 12:20 UTC3h 45m
2026-07-02 CPA582 HKG → CTS Jul 2, 02:30 UTCJul 2, 06:51 UTC4h 20m
2026-07-01 CPA865 YVR → HKG Jul 1, 08:45 UTCJul 1, 21:40 UTC12h 55m
2026-06-30 CPA888 HKG → YVR Jun 30, 17:35 UTCJul 1, 04:40 UTC11h 5m
2026-06-30 CPA742 - Jun 30, 13:50 UTCJun 30, 14:15 UTC25m
2026-06-30 CPA742 - Jun 30, 12:50 UTCJun 30, 13:10 UTC20m
2026-06-30 CPA743 - Jun 30, 10:25 UTCJun 30, 11:00 UTC35m
2026-06-30 CPA743 - Jun 30, 09:30 UTCJun 30, 09:40 UTC10m
2026-06-30 CPA319 - Jun 30, 07:10 UTCJun 30, 07:20 UTC10m
2026-06-30 CPA316 - Jun 30, 01:45 UTCJun 30, 06:30 UTC4h 45m
2026-06-29 CPA867 - Jun 29, 11:14 UTCJun 29, 11:35 UTC20m
2026-06-28 CPA867 - Jun 28, 22:45 UTCJun 29, 10:44 UTC12h 0m
2026-06-28 CPA810 HKG → YVR Jun 28, 10:19 UTCJun 28, 20:34 UTC10h 15m
2026-06-28 CPA810 HKG → YVR Jun 28, 09:30 UTCJun 28, 09:45 UTC15m
2026-06-28 CPA250 LHR → HKG Jun 28, 04:59 UTCJun 28, 05:34 UTC35m
2026-06-27 CPA250 LHR → HKG Jun 27, 17:55 UTCJun 27, 22:20 UTC4h 25m
2026-06-27 CPA255 - Jun 27, 00:39 UTCJun 27, 05:55 UTC5h 15m
2026-06-26 CPA255 - Jun 26, 16:05 UTCJun 26, 16:24 UTC20m
2026-06-26 CPA250 LHR → HKG Jun 26, 05:19 UTCJun 26, 06:04 UTC45m
2026-06-25 CPA250 LHR → HKG Jun 25, 18:00 UTCJun 25, 22:24 UTC4h 25m

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

Mode-S 780A2B frequently asked

What is Mode-S code 780A2B?
780A2B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KPZ.
Where is Mode-S 780A2B registered?
Mode-S code 780A2B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A2B 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 780A2B, octal 36005053, decimal 7,866,923.
What flights does 780A2B operate?
Mode-S 780A2B has broadcast 20 distinct callsigns, including CPA234, CPA233, CPA255, CPA250, CPA885.