Apparatus

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sensors Mode-S transponder

780A8B

ICAO 24-bit transponder address · allocated to China

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

Hex
780A8B
Octal
36005213
Decimal
7,867,019
Country
CN
Tail
B-KQW
Type
B77W
No current signal · last broadcast 1d ago
Flights observed
193
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 780A8B.

Country allocation

The ICAO 24-bit address 780A8B 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
CPA253 Cathay Pacific 27 2026-07-04
CPA254 - 23 2026-07-05
CPA251 - 22 2026-07-09
CPA252 - 20 2026-07-10
CPA830 - 17 2026-07-08
CPA881 Cathay Pacific 15 2026-07-01
CPA880 Cathay Pacific 12 2026-06-30
CPA831 - 11 2026-07-08
CPA391 - 9 2026-07-12
CPA390 - 7 2026-07-12
CPA233 Cathay Pacific 7 2026-06-14
CPA234 Cathay Pacific 5 2026-06-14
CPA138 - 4 2026-07-11
CPA743 Cathay Pacific 3 2026-06-07
CPA742 Cathay Pacific 3 2026-06-07
CPA139 - 3 2026-07-11
CPA883 Cathay Pacific 1 2026-05-09
CPA882 Cathay Pacific 1 2026-05-08
CPA3940 - 1 2026-07-12
CPA105 Cathay Pacific 1 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-12 CPA3940 - Jul 12, 20:50 UTCJul 12, 21:00 UTC10m
2026-07-12 CPA391 - Jul 12, 06:15 UTCJul 12, 09:05 UTC2h 50m
2026-07-12 CPA390 - Jul 12, 01:20 UTCJul 12, 01:35 UTC15m
2026-07-11 CPA138 - Jul 11, 20:40 UTCJul 11, 20:55 UTC15m
2026-07-11 CPA138 - Jul 11, 12:05 UTCJul 11, 19:45 UTC7h 40m
2026-07-11 CPA139 HKG → SYD Jul 11, 01:35 UTCJul 11, 09:55 UTC8h 20m
2026-07-10 CPA252 - Jul 10, 22:45 UTCJul 10, 23:10 UTC25m
2026-07-10 CPA252 - Jul 10, 12:00 UTCJul 10, 16:00 UTC4h 0m
2026-07-09 CPA251 - Jul 9, 23:20 UTCJul 10, 04:40 UTC5h 20m
2026-07-09 CPA251 - Jul 9, 15:10 UTCJul 9, 15:30 UTC20m
2026-07-08 CPA831 JFK → HKG Jul 8, 19:05 UTCJul 9, 10:15 UTC15h 10m
2026-07-08 CPA830 HKG → JFK Jul 8, 01:25 UTCJul 8, 16:50 UTC15h 25m
2026-07-06 CPA831 JFK → HKG Jul 6, 19:20 UTCJul 7, 11:05 UTC15h 45m
2026-07-06 CPA830 HKG → JFK Jul 6, 01:35 UTCJul 6, 17:05 UTC15h 30m
2026-07-05 CPA254 - Jul 5, 08:55 UTCJul 5, 09:30 UTC35m
2026-07-04 CPA254 - Jul 4, 21:45 UTCJul 5, 01:55 UTC4h 10m
2026-07-04 CPA253 HKG → LHR Jul 4, 13:55 UTCJul 4, 19:15 UTC5h 20m
2026-07-04 CPA253 HKG → LHR Jul 4, 05:40 UTCJul 4, 06:00 UTC20m
2026-07-03 CPA138 SYD → HKG Jul 3, 12:15 UTCJul 3, 21:05 UTC8h 50m
2026-07-03 CPA139 HKG → SYD Jul 3, 02:00 UTCJul 3, 10:20 UTC8h 20m
2026-07-02 CPA138 SYD → HKG Jul 2, 12:10 UTCJul 2, 21:00 UTC8h 50m
2026-07-02 CPA139 HKG → SYD Jul 2, 01:30 UTCJul 2, 09:45 UTC8h 15m
2026-07-01 CPA881 LAX → HKG Jul 1, 08:25 UTCJul 1, 22:20 UTC13h 55m
2026-06-30 CPA880 HKG → LAX Jun 30, 16:25 UTCJul 1, 04:50 UTC12h 25m
2026-06-30 CPA254 - Jun 30, 09:25 UTCJun 30, 09:45 UTC20m
2026-06-29 CPA254 - Jun 29, 22:05 UTCJun 30, 02:35 UTC4h 31m
2026-06-29 CPA253 HKG → LHR Jun 29, 14:50 UTCJun 29, 19:35 UTC4h 45m
2026-06-29 CPA253 HKG → LHR Jun 29, 06:40 UTCJun 29, 06:54 UTC15m
2026-06-27 CPA254 - Jun 27, 23:10 UTCJun 28, 10:30 UTC11h 20m
2026-06-27 CPA253 HKG → LHR Jun 27, 14:45 UTCJun 27, 19:45 UTC5h 0m
2026-06-27 CPA253 HKG → LHR Jun 27, 06:25 UTCJun 27, 06:40 UTC15m
2026-06-26 CPA881 LAX → HKG Jun 26, 08:40 UTCJun 26, 22:49 UTC14h 10m
2026-06-25 CPA880 HKG → LAX Jun 25, 16:35 UTCJun 26, 04:55 UTC12h 20m
2026-06-25 CPA254 - Jun 25, 09:14 UTCJun 25, 09:50 UTC35m
2026-06-24 CPA254 - Jun 24, 22:04 UTCJun 25, 01:09 UTC3h 5m
2026-06-24 CPA253 HKG → LHR Jun 24, 14:45 UTCJun 24, 19:34 UTC4h 50m
2026-06-24 CPA253 HKG → LHR Jun 24, 06:25 UTCJun 24, 06:39 UTC15m
2026-06-23 CPA391 - Jun 23, 05:59 UTCJun 23, 08:59 UTC3h 0m
2026-06-23 CPA390 - Jun 23, 01:20 UTCJun 23, 01:35 UTC15m
2026-06-22 CPA881 LAX → HKG Jun 22, 08:35 UTCJun 22, 22:34 UTC14h 0m
2026-06-21 CPA880 HKG → LAX Jun 21, 16:19 UTCJun 22, 04:49 UTC12h 30m
2026-06-21 CPA104 MEL → HKG Jun 21, 04:44 UTCJun 21, 13:34 UTC8h 50m
2026-06-20 CPA105 HKG → MEL Jun 20, 16:49 UTCJun 21, 01:10 UTC8h 20m
2026-06-20 CPA391 - Jun 20, 06:05 UTCJun 20, 08:55 UTC2h 50m
2026-06-20 CPA390 - Jun 20, 01:39 UTCJun 20, 01:55 UTC15m
2026-06-19 CPA252 LHR → HKG Jun 19, 23:04 UTCJun 19, 23:34 UTC30m
2026-06-19 CPA252 LHR → HKG Jun 19, 11:39 UTCJun 19, 16:04 UTC4h 25m
2026-06-19 CPA251 HKG → LHR Jun 19, 01:59 UTCJun 19, 06:49 UTC4h 50m
2026-06-18 CPA251 HKG → LHR Jun 18, 17:30 UTCJun 18, 17:50 UTC20m
2026-06-17 CPA254 - Jun 17, 22:10 UTCJun 18, 10:10 UTC12h 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-KQW page for operator, model, and routing details .

Mode-S 780A8B frequently asked

What is Mode-S code 780A8B?
780A8B is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KQW.
Where is Mode-S 780A8B registered?
Mode-S code 780A8B is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A8B broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A8B, octal 36005213, decimal 7,867,019.
What flights does 780A8B operate?
Mode-S 780A8B has broadcast 20 distinct callsigns, including CPA253, CPA254, CPA251, CPA252, CPA830.