Apparatus

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sensors Mode-S transponder

780204

ICAO 24-bit transponder address · allocated to China

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

Hex
780204
Octal
36001004
Decimal
7,864,836
Country
CN
Tail
B-KPD
Type
B77W
No current signal · last broadcast Jul 26, 15:30 UTC
Flights observed
196
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 15:30 UTC

Last known position

Most recent position reported by Mode-S 780204.

Country allocation

The ICAO 24-bit address 780204 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 23 2026-07-26
CPA880 - 19 2026-07-16
CPA253 Cathay Pacific 19 2026-07-25
CPA881 - 17 2026-07-17
CPA252 Cathay Pacific 16 2026-07-24
CPA830 - 15 2026-07-15
CPA254 Cathay Pacific 11 2026-07-25
CPA831 - 10 2026-07-15
CPA391 Cathay Pacific 10 2026-07-23
CPA234 Cathay Pacific 9 2026-06-16
CPA233 Cathay Pacific 9 2026-06-15
CPA138 - 7 2026-07-12
CPA390 Cathay Pacific 6 2026-07-23
CPA139 - 6 2026-07-12
CPA104 - 6 2026-06-28
CPA105 Cathay Pacific 3 2026-06-27
CPA741 Cathay Pacific 2 2026-06-12
CPA740 Cathay Pacific 2 2026-06-12
CPA734 Cathay Pacific 2 2026-05-07
CPA883 Cathay Pacific 1 2026-04-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA251 HKG → LHR Jul 26, 15:10 UTCJul 26, 15:30 UTC20m
2026-07-25 CPA254 LHR → HKG Jul 25, 22:25 UTCJul 26, 01:25 UTC3h 0m
2026-07-25 CPA253 HKG → LHR Jul 25, 14:20 UTCJul 25, 19:15 UTC4h 55m
2026-07-25 CPA253 HKG → LHR Jul 25, 06:05 UTCJul 25, 06:25 UTC20m
2026-07-24 CPA252 LHR → HKG Jul 24, 11:35 UTCJul 24, 23:05 UTC11h 30m
2026-07-23 CPA251 HKG → LHR Jul 23, 23:50 UTCJul 24, 04:30 UTC4h 40m
2026-07-23 CPA251 HKG → LHR Jul 23, 15:15 UTCJul 23, 15:30 UTC15m
2026-07-23 CPA391 PEK → HKG Jul 23, 08:40 UTCJul 23, 09:20 UTC40m
2026-07-23 CPA391 PEK → HKG Jul 23, 06:15 UTCJul 23, 06:30 UTC15m
2026-07-23 CPA390 HKG → PEK Jul 23, 01:50 UTCJul 23, 02:05 UTC15m
2026-07-22 CPA252 LHR → HKG Jul 22, 12:15 UTCJul 22, 23:40 UTC11h 25m
2026-07-21 CPA251 HKG → LHR Jul 21, 15:10 UTCJul 22, 04:55 UTC13h 45m
2026-07-21 CPA391 PEK → HKG Jul 21, 06:05 UTCJul 21, 09:00 UTC2h 55m
2026-07-21 CPA390 HKG → PEK Jul 21, 01:35 UTCJul 21, 01:50 UTC15m
2026-07-20 CPA252 - Jul 20, 22:35 UTCJul 20, 23:05 UTC30m
2026-07-20 CPA252 - Jul 20, 11:30 UTCJul 20, 15:50 UTC4h 20m
2026-07-20 CPA251 - Jul 20, 00:00 UTCJul 20, 05:20 UTC5h 20m
2026-07-19 CPA251 - Jul 19, 15:10 UTCJul 19, 15:35 UTC25m
2026-07-19 CPA254 LHR → HKG Jul 19, 09:00 UTCJul 19, 09:45 UTC45m
2026-07-18 CPA254 LHR → HKG Jul 18, 21:45 UTCJul 19, 00:40 UTC2h 55m
2026-07-18 CPA253 - Jul 18, 14:35 UTCJul 18, 19:45 UTC5h 10m
2026-07-18 CPA253 - Jul 18, 05:50 UTCJul 18, 06:05 UTC15m
2026-07-17 CPA881 - Jul 17, 08:45 UTCJul 17, 22:00 UTC13h 15m
2026-07-16 CPA880 - Jul 16, 16:35 UTCJul 17, 05:55 UTC13h 20m
2026-07-15 CPA831 - Jul 15, 19:05 UTCJul 16, 10:29 UTC15h 25m
2026-07-15 CPA830 HKG → JFK Jul 15, 01:30 UTCJul 15, 16:35 UTC15h 5m
2026-07-14 CPA881 - Jul 14, 08:40 UTCJul 14, 22:15 UTC13h 35m
2026-07-13 CPA880 - Jul 13, 16:30 UTCJul 14, 05:55 UTC13h 25m
2026-07-12 CPA138 - Jul 12, 20:30 UTCJul 12, 20:55 UTC25m
2026-07-12 CPA138 - Jul 12, 12:05 UTCJul 12, 19:45 UTC7h 40m
2026-07-12 CPA139 HKG → SYD Jul 12, 01:40 UTCJul 12, 10:15 UTC8h 35m
2026-07-11 CPA881 - Jul 11, 22:20 UTCJul 11, 22:35 UTC15m
2026-07-11 CPA881 - Jul 11, 08:35 UTCJul 11, 21:45 UTC13h 10m
2026-07-10 CPA880 HKG → LAX Jul 10, 16:25 UTCJul 11, 05:25 UTC13h 1m
2026-07-09 CPA254 - Jul 9, 21:40 UTCJul 10, 09:20 UTC11h 40m
2026-07-09 CPA253 - Jul 9, 11:05 UTCJul 9, 19:20 UTC8h 15m
2026-07-09 CPA253 - Jul 9, 05:55 UTCJul 9, 06:10 UTC15m
2026-07-08 CPA252 - Jul 8, 22:55 UTCJul 8, 23:25 UTC30m
2026-07-08 CPA252 - Jul 8, 11:45 UTCJul 8, 16:00 UTC4h 15m
2026-07-07 CPA251 HKG → LHR Jul 7, 23:40 UTCJul 8, 04:50 UTC5h 10m
2026-07-07 CPA251 HKG → LHR Jul 7, 15:25 UTCJul 7, 15:40 UTC15m
2026-07-06 CPA138 SYD → HKG Jul 6, 12:10 UTCJul 6, 20:55 UTC8h 45m
2026-07-06 CPA139 HKG → SYD Jul 6, 01:35 UTCJul 6, 10:00 UTC8h 25m
2026-07-05 CPA138 SYD → HKG Jul 5, 20:25 UTCJul 5, 20:50 UTC25m
2026-07-05 CPA138 SYD → HKG Jul 5, 12:10 UTCJul 5, 19:35 UTC7h 25m
2026-07-05 CPA139 - Jul 5, 02:50 UTCJul 5, 10:10 UTC7h 20m
2026-07-05 CPA139 - Jul 5, 01:45 UTCJul 5, 02:05 UTC20m
2026-07-04 CPA138 SYD → HKG Jul 4, 20:45 UTCJul 4, 20:50 UTC5m
2026-07-04 CPA138 SYD → HKG Jul 4, 12:00 UTCJul 4, 19:40 UTC7h 40m
2026-07-04 CPA139 - Jul 4, 02:50 UTCJul 4, 10:00 UTC7h 10m

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

Mode-S 780204 frequently asked

What is Mode-S code 780204?
780204 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KPD.
Where is Mode-S 780204 registered?
Mode-S code 780204 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780204 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 15:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780204, octal 36001004, decimal 7,864,836.
What flights does 780204 operate?
Mode-S 780204 has broadcast 20 distinct callsigns, including CPA251, CPA880, CPA253, CPA881, CPA252.