Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 Jul 26, 21:30 UTC
Flights observed
234
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:30 UTC

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
CPA289 Cathay Pacific 12 2026-07-23
CPA233 Cathay Pacific 12 2026-06-30
CPA178 - 12 2026-07-17
CPA549 Cathay Pacific 11 2026-07-22
CPA288 Cathay Pacific 11 2026-07-24
CPA100 - 11 2026-07-14
CPA867 - 10 2026-07-07
CPA810 Cathay Pacific 10 2026-07-07
CPA873 - 9 2026-07-09
CPA234 Cathay Pacific 9 2026-06-30
CPA865 Cathay Pacific 8 2026-07-03
CPA581 Cathay Pacific 8 2026-07-23
CPA872 - 7 2026-07-08
CPA181 - 7 2026-07-13
CPA580 Cathay Pacific 6 2026-07-23
CPA548 Cathay Pacific 6 2026-07-22
CPA163 Cathay Pacific 6 2026-07-17
CPA138 Cathay Pacific 5 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA138 SYD → HKG Jul 26, 21:10 UTCJul 26, 21:20 UTC10m
2026-07-26 CPA138 SYD → HKG Jul 26, 12:15 UTCJul 26, 19:55 UTC7h 40m
2026-07-25 CPA139 HKG → SYD Jul 25, 01:25 UTCJul 25, 09:45 UTC8h 20m
2026-07-24 CPA288 FRA → HKG Jul 24, 12:05 UTCJul 24, 22:50 UTC10h 45m
2026-07-23 CPA289 HKG → FRA Jul 23, 21:20 UTCJul 24, 04:40 UTC7h 20m
2026-07-23 CPA289 HKG → FRA Jul 23, 16:15 UTCJul 23, 16:30 UTC15m
2026-07-23 CPA581 CTS → HKG Jul 23, 08:10 UTCJul 23, 12:35 UTC4h 25m
2026-07-23 CPA580 HKG → CTS Jul 23, 02:00 UTCJul 23, 06:25 UTC4h 25m
2026-07-22 CPA549 HND → HKG Jul 22, 11:15 UTCJul 22, 11:40 UTC25m
2026-07-22 CPA548 HKG → HND Jul 22, 01:00 UTCJul 22, 04:50 UTC3h 50m
2026-07-21 CPA704 - Jul 21, 16:05 UTCJul 21, 16:10 UTC5m
2026-07-21 CPA704 - Jul 21, 14:00 UTCJul 21, 14:25 UTC25m
2026-07-21 CPA701 HKG → BKK Jul 21, 12:15 UTCJul 21, 12:40 UTC25m
2026-07-21 CPA701 HKG → BKK Jul 21, 10:30 UTCJul 21, 10:45 UTC15m
2026-07-21 CPA754 BKK → HKG Jul 21, 08:20 UTCJul 21, 08:40 UTC20m
2026-07-21 CPA754 BKK → HKG Jul 21, 06:10 UTCJul 21, 07:40 UTC1h 30m
2026-07-21 CPA755 HKG → BKK Jul 21, 03:50 UTCJul 21, 04:25 UTC35m
2026-07-21 CPA755 HKG → BKK Jul 21, 02:00 UTCJul 21, 02:15 UTC15m
2026-07-20 CPA288 - Jul 20, 22:25 UTCJul 20, 22:55 UTC30m
2026-07-20 CPA288 - Jul 20, 12:05 UTCJul 20, 15:35 UTC3h 30m
2026-07-20 CPA289 HKG → FRA Jul 20, 01:15 UTCJul 20, 05:30 UTC4h 15m
2026-07-19 CPA289 HKG → FRA Jul 19, 16:25 UTCJul 19, 16:40 UTC15m
2026-07-19 CPA581 CTS → HKG Jul 19, 08:05 UTCJul 19, 12:40 UTC4h 35m
2026-07-19 CPA580 HKG → CTS Jul 19, 02:05 UTCJul 19, 06:25 UTC4h 20m
2026-07-18 CPA138 - Jul 18, 12:30 UTCJul 18, 21:10 UTC8h 40m
2026-07-18 CPA139 HKG → SYD Jul 18, 02:00 UTCJul 18, 10:35 UTC8h 36m
2026-07-17 CPA178 - Jul 17, 22:40 UTCJul 17, 23:05 UTC25m
2026-07-17 CPA178 - Jul 17, 14:39 UTCJul 17, 21:50 UTC7h 10m
2026-07-17 CPA163 HKG → MEL Jul 17, 03:50 UTCJul 17, 12:40 UTC8h 50m
2026-07-16 CPA138 - Jul 16, 21:00 UTCJul 16, 21:19 UTC20m
2026-07-16 CPA138 - Jul 16, 12:55 UTCJul 16, 20:00 UTC7h 5m
2026-07-16 CPA139 HKG → SYD Jul 16, 02:20 UTCJul 16, 10:55 UTC8h 35m
2026-07-15 CPA288 - Jul 15, 22:25 UTCJul 15, 23:05 UTC40m
2026-07-15 CPA288 - Jul 15, 12:05 UTCJul 15, 15:40 UTC3h 35m
2026-07-15 CPA289 - Jul 15, 00:20 UTCJul 15, 04:50 UTC4h 30m
2026-07-14 CPA289 - Jul 14, 16:00 UTCJul 14, 16:25 UTC25m
2026-07-14 CPA100 SYD → HKG Jul 14, 04:15 UTCJul 14, 12:50 UTC8h 35m
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

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 Jul 26, 21:30 UTC.
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, CPA289, CPA233, CPA178.