Apparatus

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sensors Mode-S transponder

780A66

ICAO 24-bit transponder address · allocated to China

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

Hex
780A66
Octal
36005146
Decimal
7,866,982
Country
CN
Tail
B-KQR
Type
B77W
Transponder active on ground
Flights observed
369
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:20 UTC

Last known position

Most recent position reported by Mode-S 780A66.

Country allocation

The ICAO 24-bit address 780A66 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 Cathay Pacific 47 2026-07-26
CPA660 Cathay Pacific 39 2026-07-26
CPA683 Cathay Pacific 31 2026-07-25
CPA696 Cathay Pacific 26 2026-07-26
CPA879 Cathay Pacific 19 2026-07-17
CPA870 - 16 2026-07-17
CPA815 - 15 2026-07-13
CPA665 - 14 2026-07-09
CPA698 - 12 2026-07-09
CPA814 - 10 2026-07-13
CPA883 Cathay Pacific 9 2026-07-24
CPA694 - 8 2026-07-13
CPA679 - 8 2026-07-12
CPA882 Cathay Pacific 7 2026-07-23
CPA104 Cathay Pacific 6 2026-07-22
CPA769 Cathay Pacific 4 2026-07-19
CPA764 Cathay Pacific 4 2026-07-19
CPA743 - 4 2026-07-02
CPA742 - 4 2026-07-02
CPA741 - 4 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA660 BOM → HKG Jul 26, 21:10 UTCJul 26, 21:20 UTC10m
2026-07-26 CPA663 HKG → BOM Jul 26, 19:00 UTCJul 26, 19:20 UTC20m
2026-07-26 CPA663 HKG → BOM Jul 26, 14:45 UTCJul 26, 17:45 UTC3h 0m
2026-07-26 CPA663 HKG → BOM Jul 26, 13:55 UTCJul 26, 14:00 UTC5m
2026-07-26 CPA696 BOM → HKG Jul 26, 10:25 UTCJul 26, 11:15 UTC50m
2026-07-26 CPA696 BOM → HKG Jul 26, 06:55 UTCJul 26, 08:45 UTC1h 50m
2026-07-26 CPA696 BOM → HKG Jul 26, 05:30 UTCJul 26, 05:40 UTC10m
2026-07-25 CPA683 HKG → BOM Jul 25, 16:40 UTCJul 25, 16:55 UTC15m
2026-07-25 CPA683 HKG → BOM Jul 25, 12:25 UTCJul 25, 15:25 UTC3h 0m
2026-07-25 CPA683 HKG → BOM Jul 25, 11:30 UTCJul 25, 11:40 UTC10m
2026-07-25 CPA319 PVG → HKG Jul 25, 02:30 UTCJul 25, 09:05 UTC6h 35m
2026-07-24 CPA883 LAX → HKG Jul 24, 08:15 UTCJul 24, 21:30 UTC13h 15m
2026-07-23 CPA882 HKG → LAX Jul 23, 10:45 UTCJul 24, 00:00 UTC13h 15m
2026-07-23 CPA495 TPE → HKG Jul 23, 05:30 UTCJul 23, 06:40 UTC1h 10m
2026-07-23 CPA494 HKG → TPE Jul 23, 02:35 UTCJul 23, 03:55 UTC1h 20m
2026-07-22 CPA104 MEL → HKG Jul 22, 13:25 UTCJul 22, 13:40 UTC15m
2026-07-22 CPA104 MEL → HKG Jul 22, 04:40 UTCJul 22, 12:30 UTC7h 50m
2026-07-21 CPA105 - Jul 21, 16:45 UTCJul 22, 01:00 UTC8h 15m
2026-07-21 CPA104 MEL → HKG Jul 21, 13:20 UTCJul 21, 13:45 UTC25m
2026-07-21 CPA104 MEL → HKG Jul 21, 04:35 UTCJul 21, 12:25 UTC7h 50m
2026-07-20 CPA105 HKG → MEL Jul 20, 16:50 UTCJul 21, 01:10 UTC8h 20m
2026-07-20 CPA104 MEL → HKG Jul 20, 13:05 UTCJul 20, 13:30 UTC25m
2026-07-20 CPA104 MEL → HKG Jul 20, 04:35 UTCJul 20, 12:20 UTC7h 45m
2026-07-19 CPA105 HKG → MEL Jul 19, 16:40 UTCJul 20, 01:00 UTC8h 20m
2026-07-19 CPA764 SGN → HKG Jul 19, 14:40 UTCJul 19, 15:00 UTC20m
2026-07-19 CPA769 HKG → SGN Jul 19, 08:20 UTCJul 19, 08:35 UTC15m
2026-07-18 CPA660 BOM → HKG Jul 18, 22:10 UTCJul 19, 02:40 UTC4h 30m
2026-07-18 CPA660 - Jul 18, 20:40 UTCJul 18, 20:55 UTC15m
2026-07-18 CPA663 - Jul 18, 17:50 UTCJul 18, 18:05 UTC15m
2026-07-18 CPA663 - Jul 18, 15:05 UTCJul 18, 16:40 UTC1h 35m
2026-07-18 CPA663 - Jul 18, 12:50 UTCJul 18, 13:00 UTC10m
2026-07-17 CPA879 SFO → HKG Jul 17, 21:34 UTCJul 18, 10:20 UTC12h 46m
2026-07-17 CPA870 HKG → SFO Jul 17, 05:50 UTCJul 17, 18:34 UTC12h 45m
2026-07-17 CPA660 - Jul 17, 01:49 UTCJul 17, 02:34 UTC45m
2026-07-16 CPA660 - Jul 16, 22:05 UTCJul 16, 23:59 UTC1h 55m
2026-07-16 CPA660 - Jul 16, 20:35 UTCJul 16, 20:45 UTC10m
2026-07-16 CPA663 - Jul 16, 18:19 UTCJul 16, 18:34 UTC15m
2026-07-16 CPA663 - Jul 16, 15:35 UTCJul 16, 17:10 UTC1h 35m
2026-07-16 CPA663 - Jul 16, 13:25 UTCJul 16, 13:40 UTC15m
2026-07-15 CPA879 - Jul 15, 22:00 UTCJul 16, 10:59 UTC13h 0m
2026-07-15 CPA870 HKG → SFO Jul 15, 06:40 UTCJul 15, 19:20 UTC12h 40m
2026-07-14 CPA696 - Jul 14, 18:45 UTCJul 14, 23:00 UTC4h 14m
2026-07-14 CPA696 - Jul 14, 17:20 UTCJul 14, 17:30 UTC10m
2026-07-14 CPA683 - Jul 14, 15:00 UTCJul 14, 15:15 UTC15m
2026-07-14 CPA683 - Jul 14, 12:05 UTCJul 14, 13:45 UTC1h 40m
2026-07-14 CPA683 - Jul 14, 09:55 UTCJul 14, 10:10 UTC15m
2026-07-13 CPA815 YVR → HKG Jul 13, 17:20 UTCJul 14, 05:50 UTC12h 30m
2026-07-13 CPA814 HKG → YVR Jul 13, 03:40 UTCJul 13, 15:20 UTC11h 40m
2026-07-13 CPA694 - Jul 13, 00:40 UTCJul 13, 01:01 UTC20m
2026-07-12 CPA694 - Jul 12, 20:10 UTCJul 12, 22:50 UTC2h 40m

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

Mode-S 780A66 frequently asked

What is Mode-S code 780A66?
780A66 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KQR.
Where is Mode-S 780A66 registered?
Mode-S code 780A66 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A66 broadcasting right now?
Mode-S 780A66 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A66, octal 36005146, decimal 7,866,982.
What flights does 780A66 operate?
Mode-S 780A66 has broadcast 20 distinct callsigns, including CPA663, CPA660, CPA683, CPA696, CPA879.