Apparatus

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sensors Mode-S transponder

780A3A

ICAO 24-bit transponder address · allocated to China

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

Hex
780A3A
Octal
36005072
Decimal
7,866,938
Country
CN
Tail
B-KQH
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
197
Distinct callsigns
20
Country
CN
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 780A3A.

Country allocation

The ICAO 24-bit address 780A3A 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
CPA255 - 21 2026-07-06
CPA250 Cathay Pacific 14 2026-07-06
CPA233 Cathay Pacific 12 2026-06-30
CPA867 - 10 2026-07-07
CPA810 Cathay Pacific 10 2026-07-07
CPA549 - 10 2026-07-04
CPA178 - 10 2026-07-10
CPA100 - 10 2026-07-05
CPA873 - 9 2026-07-09
CPA234 Cathay Pacific 9 2026-06-30
CPA865 Cathay Pacific 8 2026-07-03
CPA872 - 7 2026-07-08
CPA181 - 7 2026-07-13
CPA581 Cathay Pacific 6 2026-05-20
CPA289 - 6 2026-07-11
CPA288 - 6 2026-07-12
CPA548 - 5 2026-07-04
CPA163 - 5 2026-07-10
CPA888 Cathay Pacific 4 2026-07-02
CPA885 - 4 2026-07-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CPA181 - Jul 13, 17:05 UTCJul 14, 01:35 UTC8h 30m
2026-07-12 CPA288 - Jul 12, 22:25 UTCJul 12, 22:45 UTC20m
2026-07-12 CPA288 - Jul 12, 12:05 UTCJul 12, 14:10 UTC2h 5m
2026-07-11 CPA289 - Jul 11, 21:05 UTCJul 12, 04:40 UTC7h 35m
2026-07-11 CPA289 - Jul 11, 16:05 UTCJul 11, 16:25 UTC20m
2026-07-10 CPA178 - Jul 10, 22:25 UTCJul 10, 22:50 UTC25m
2026-07-10 CPA178 - Jul 10, 14:05 UTCJul 10, 21:30 UTC7h 26m
2026-07-10 CPA163 - Jul 10, 03:55 UTCJul 10, 12:15 UTC8h 20m
2026-07-09 CPA873 - Jul 9, 09:05 UTCJul 9, 22:30 UTC13h 25m
2026-07-08 CPA872 - Jul 8, 17:35 UTCJul 9, 05:35 UTC12h 0m
2026-07-07 CPA867 - Jul 7, 22:15 UTCJul 8, 10:35 UTC12h 20m
2026-07-07 CPA810 HKG → YVR Jul 7, 08:15 UTCJul 7, 19:30 UTC11h 15m
2026-07-06 CPA250 LHR → HKG Jul 6, 17:40 UTCJul 7, 05:25 UTC11h 45m
2026-07-06 CPA255 - Jul 6, 00:00 UTCJul 6, 05:20 UTC5h 20m
2026-07-05 CPA255 - Jul 5, 15:45 UTCJul 5, 16:00 UTC15m
2026-07-05 CPA100 - Jul 5, 12:30 UTCJul 5, 12:50 UTC20m
2026-07-05 CPA100 - Jul 5, 04:20 UTCJul 5, 11:45 UTC7h 25m
2026-07-04 CPA181 HKG → SYD Jul 4, 17:20 UTCJul 5, 01:35 UTC8h 15m
2026-07-04 CPA549 - Jul 4, 11:25 UTCJul 4, 11:40 UTC15m
2026-07-04 CPA549 - Jul 4, 07:55 UTCJul 4, 10:50 UTC2h 55m
2026-07-04 CPA548 HKG → HND Jul 4, 01:20 UTCJul 4, 05:05 UTC3h 45m
2026-07-03 CPA865 YVR → HKG Jul 3, 08:50 UTCJul 3, 22:00 UTC13h 10m
2026-07-02 CPA888 HKG → YVR Jul 2, 17:15 UTCJul 3, 04:25 UTC11h 10m
2026-07-02 CPA885 - Jul 2, 10:20 UTCJul 2, 10:45 UTC25m
2026-07-01 CPA885 - Jul 1, 20:45 UTCJul 2, 09:50 UTC13h 5m
2026-07-01 CPA884 - Jul 1, 06:10 UTCJul 1, 17:50 UTC11h 40m
2026-07-01 CPA884 - Jul 1, 05:20 UTCJul 1, 05:35 UTC15m
2026-06-30 CPA234 MXP → HKG Jun 30, 21:45 UTCJun 30, 22:05 UTC20m
2026-06-30 CPA234 MXP → HKG Jun 30, 11:15 UTCJun 30, 14:55 UTC3h 40m
2026-06-30 CPA233 HKG → MXP Jun 30, 02:00 UTCJun 30, 06:05 UTC4h 5m
2026-06-29 CPA233 HKG → MXP Jun 29, 17:30 UTCJun 29, 17:45 UTC15m
2026-06-27 CPA234 MXP → HKG Jun 27, 11:14 UTCJun 27, 22:04 UTC10h 50m
2026-06-27 CPA233 HKG → MXP Jun 27, 01:39 UTCJun 27, 05:49 UTC4h 10m
2026-06-26 CPA233 HKG → MXP Jun 26, 17:09 UTCJun 26, 17:29 UTC20m
2026-06-26 CPA867 - Jun 26, 10:30 UTCJun 26, 10:44 UTC15m
2026-06-25 CPA867 - Jun 25, 22:10 UTCJun 26, 09:55 UTC11h 45m
2026-06-25 CPA810 HKG → YVR Jun 25, 09:05 UTCJun 25, 19:20 UTC10h 15m
2026-06-25 CPA810 HKG → YVR Jun 25, 08:14 UTCJun 25, 08:30 UTC15m
2026-06-25 CPA740 - Jun 25, 04:35 UTCJun 25, 06:14 UTC1h 40m
2026-06-25 CPA741 - Jun 25, 01:30 UTCJun 25, 02:49 UTC1h 20m
2026-06-24 CPA234 MXP → HKG Jun 24, 22:00 UTCJun 24, 22:35 UTC35m
2026-06-24 CPA234 MXP → HKG Jun 24, 11:29 UTCJun 24, 15:09 UTC3h 40m
2026-06-24 CPA233 HKG → MXP Jun 24, 01:44 UTCJun 24, 05:40 UTC3h 55m
2026-06-23 CPA233 HKG → MXP Jun 23, 17:20 UTCJun 23, 17:34 UTC15m
2026-06-23 CPA319 HKG → HKG Jun 23, 00:30 UTCJun 23, 06:39 UTC6h 10m
2026-06-21 CPA873 SFO → HKG Jun 21, 08:49 UTCJun 21, 22:00 UTC13h 10m
2026-06-20 CPA872 HKG → SFO Jun 20, 17:34 UTCJun 21, 05:54 UTC12h 20m
2026-06-20 CPA100 - Jun 20, 13:04 UTCJun 20, 13:24 UTC20m
2026-06-20 CPA100 - Jun 20, 04:29 UTCJun 20, 12:14 UTC7h 45m
2026-06-19 CPA181 HKG → SYD Jun 19, 17:19 UTCJun 20, 01:24 UTC8h 5m

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

Mode-S 780A3A frequently asked

What is Mode-S code 780A3A?
780A3A is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KQH.
Where is Mode-S 780A3A registered?
Mode-S code 780A3A is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A3A 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 780A3A, octal 36005072, decimal 7,866,938.
What flights does 780A3A operate?
Mode-S 780A3A has broadcast 20 distinct callsigns, including CPA255, CPA250, CPA233, CPA867, CPA810.