Apparatus

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sensors Mode-S transponder

780A61

ICAO 24-bit transponder address · allocated to China

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

Hex
780A61
Octal
36005141
Decimal
7,866,977
Country
CN
Tail
B-KQM
Type
B77W
No current signal · last broadcast Jul 26, 15:55 UTC
Flights observed
206
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 15:55 UTC

Last known position

Most recent position reported by Mode-S 780A61.

Country allocation

The ICAO 24-bit address 780A61 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
CPA251 Cathay Pacific 33 2026-07-24
CPA253 Cathay Pacific 27 2026-07-23
CPA254 Cathay Pacific 21 2026-07-24
CPA252 Cathay Pacific 21 2026-07-26
CPA830 - 13 2026-07-16
CPA391 Cathay Pacific 13 2026-07-19
CPA831 - 11 2026-07-16
CPA881 - 10 2026-07-22
CPA880 - 10 2026-07-21
CPA390 - 10 2026-07-19
CPA233 Cathay Pacific 4 2026-05-14
CPA104 - 4 2026-06-25
CPA234 Cathay Pacific 3 2026-05-15
CPA883 Cathay Pacific 2 2026-05-26
CPA882 Cathay Pacific 2 2026-05-25
CPA742 Cathay Pacific 2 2026-06-16
CPA741 Cathay Pacific 2 2026-06-06
CPA740 Cathay Pacific 2 2026-06-06
CPA734 Cathay Pacific 2 2026-06-05
CPA704 Cathay Pacific 2 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA252 LHR → HKG Jul 26, 11:45 UTCJul 26, 15:55 UTC4h 10m
2026-07-24 CPA251 HKG → LHR Jul 24, 23:15 UTCJul 25, 04:15 UTC5h 0m
2026-07-24 CPA251 HKG → LHR Jul 24, 15:10 UTCJul 24, 15:25 UTC15m
2026-07-24 CPA254 LHR → HKG Jul 24, 08:50 UTCJul 24, 09:25 UTC35m
2026-07-23 CPA254 LHR → HKG Jul 23, 21:40 UTCJul 24, 01:55 UTC4h 15m
2026-07-23 CPA253 HKG → LHR Jul 23, 13:45 UTCJul 23, 18:50 UTC5h 5m
2026-07-23 CPA253 HKG → LHR Jul 23, 05:40 UTCJul 23, 05:50 UTC10m
2026-07-22 CPA881 - Jul 22, 04:50 UTCJul 22, 22:55 UTC18h 5m
2026-07-21 CPA880 HKG → LAX Jul 21, 20:20 UTCJul 22, 20:15 UTC23h 55m
2026-07-21 CPA880 - Jul 21, 17:50 UTCJul 22, 10:25 UTC16h 35m
2026-07-20 CPA881 - Jul 20, 08:40 UTCJul 20, 22:05 UTC13h 25m
2026-07-19 CPA880 HKG → LAX Jul 19, 16:20 UTCJul 20, 05:30 UTC13h 10m
2026-07-19 CPA391 PEK → HKG Jul 19, 06:10 UTCJul 19, 09:05 UTC2h 55m
2026-07-19 CPA390 - Jul 19, 03:35 UTCJul 19, 03:50 UTC15m
2026-07-19 CPA390 - Jul 19, 01:10 UTCJul 19, 01:25 UTC15m
2026-07-18 CPA881 - Jul 18, 08:35 UTCJul 18, 22:00 UTC13h 25m
2026-07-17 CPA880 - Jul 17, 16:34 UTCJul 18, 05:45 UTC13h 11m
2026-07-16 CPA831 JFK → HKG Jul 16, 20:29 UTCJul 17, 12:00 UTC15h 30m
2026-07-16 CPA830 HKG → JFK Jul 16, 02:45 UTCJul 16, 18:05 UTC15h 20m
2026-07-15 CPA252 - Jul 15, 22:50 UTCJul 15, 23:20 UTC30m
2026-07-15 CPA252 - Jul 15, 11:50 UTCJul 15, 16:00 UTC4h 10m
2026-07-14 CPA251 - Jul 14, 23:15 UTCJul 15, 04:30 UTC5h 15m
2026-07-14 CPA251 - Jul 14, 15:00 UTCJul 14, 15:15 UTC15m
2026-07-13 CPA254 - Jul 13, 21:45 UTCJul 14, 09:40 UTC11h 55m
2026-07-13 CPA253 - Jul 13, 13:50 UTCJul 13, 19:00 UTC5h 10m
2026-07-13 CPA253 - Jul 13, 05:45 UTCJul 13, 06:01 UTC15m
2026-07-11 CPA831 JFK → HKG Jul 11, 19:25 UTCJul 12, 10:50 UTC15h 25m
2026-07-11 CPA830 HKG → JFK Jul 11, 01:25 UTCJul 11, 17:05 UTC15h 40m
2026-07-09 CPA831 JFK → HKG Jul 9, 19:20 UTCJul 10, 10:35 UTC15h 15m
2026-07-09 CPA830 HKG → JFK Jul 9, 01:45 UTCJul 9, 17:05 UTC15h 20m
2026-07-08 CPA704 BKK → HKG Jul 8, 14:50 UTCJul 8, 14:55 UTC5m
2026-07-08 CPA704 BKK → HKG Jul 8, 12:45 UTCJul 8, 14:15 UTC1h 30m
2026-07-08 CPA701 - Jul 8, 09:25 UTCJul 8, 11:05 UTC1h 40m
2026-07-08 CPA701 - Jul 8, 08:45 UTCJul 8, 08:55 UTC10m
2026-07-07 CPA252 LHR → HKG Jul 7, 22:40 UTCJul 7, 23:10 UTC30m
2026-07-07 CPA252 LHR → HKG Jul 7, 11:35 UTCJul 7, 15:50 UTC4h 15m
2026-07-06 CPA251 HKG → LHR Jul 6, 23:30 UTCJul 7, 04:30 UTC5h 0m
2026-07-06 CPA251 HKG → LHR Jul 6, 15:05 UTCJul 6, 15:20 UTC15m
2026-07-06 CPA391 - Jul 6, 06:55 UTCJul 6, 09:50 UTC2h 55m
2026-07-06 CPA390 - Jul 6, 01:20 UTCJul 6, 01:30 UTC10m
2026-07-05 CPA252 LHR → HKG Jul 5, 11:40 UTCJul 5, 23:15 UTC11h 35m
2026-07-04 CPA251 HKG → LHR Jul 4, 23:20 UTCJul 5, 04:30 UTC5h 10m
2026-07-04 CPA251 HKG → LHR Jul 4, 15:20 UTCJul 4, 15:40 UTC20m
2026-07-04 CPA391 - Jul 4, 09:50 UTCJul 4, 10:00 UTC10m
2026-07-04 CPA391 - Jul 4, 06:35 UTCJul 4, 09:15 UTC2h 40m
2026-07-04 CPA390 - Jul 4, 01:50 UTCJul 4, 02:05 UTC15m
2026-07-03 CPA252 LHR → HKG Jul 3, 12:10 UTCJul 3, 23:45 UTC11h 35m
2026-07-03 CPA251 HKG → LHR Jul 3, 02:50 UTCJul 3, 08:20 UTC5h 30m
2026-07-02 CPA251 HKG → LHR Jul 2, 18:50 UTCJul 2, 19:10 UTC20m
2026-06-30 CPA391 - Jun 30, 05:55 UTCJun 30, 08:55 UTC3h 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-KQM page for operator, model, and routing details .

Mode-S 780A61 frequently asked

What is Mode-S code 780A61?
780A61 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KQM.
Where is Mode-S 780A61 registered?
Mode-S code 780A61 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A61 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A61, octal 36005141, decimal 7,866,977.
What flights does 780A61 operate?
Mode-S 780A61 has broadcast 20 distinct callsigns, including CPA251, CPA253, CPA254, CPA252, CPA830.