Apparatus

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sensors Mode-S transponder

78023E

ICAO 24-bit transponder address · allocated to China

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

Hex
78023E
Octal
36001076
Decimal
7,864,894
Country
CN
Tail
B-KPR
Type
B77W
No current signal · last broadcast 5h ago
Flights observed
193
Distinct callsigns
20
Country
CN
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 78023E.

Country allocation

The ICAO 24-bit address 78023E 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 Cathay Pacific 23 2026-07-22
CPA250 Cathay Pacific 19 2026-07-22
CPA867 Cathay Pacific 14 2026-07-17
CPA178 - 13 2026-07-16
CPA810 - 12 2026-07-17
CPA549 Cathay Pacific 9 2026-07-19
CPA233 - 8 2026-07-20
CPA163 - 8 2026-07-16
CPA885 - 6 2026-07-14
CPA884 - 6 2026-07-14
CPA873 Cathay Pacific 6 2026-07-08
CPA872 Cathay Pacific 6 2026-07-24
CPA548 Cathay Pacific 6 2026-07-19
CPA289 Cathay Pacific 6 2026-05-23
CPA865 Cathay Pacific 5 2026-06-16
CPA234 - 5 2026-07-20
CPA100 Cathay Pacific 5 2026-07-24
CPA665 - 4 2026-07-10
CPA288 Cathay Pacific 4 2026-05-23
CPA888 Cathay Pacific 3 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 CPA872 HKG → SFO Jul 24, 17:55 UTCJul 24, 21:45 UTC3h 50m
2026-07-24 CPA100 SYD → HKG Jul 24, 12:55 UTCJul 24, 13:15 UTC20m
2026-07-24 CPA100 SYD → HKG Jul 24, 04:20 UTCJul 24, 12:05 UTC7h 45m
2026-07-23 CPA181 HKG → SYD Jul 23, 17:05 UTCJul 24, 01:10 UTC8h 5m
2026-07-22 CPA250 LHR → HKG Jul 22, 17:45 UTCJul 23, 05:55 UTC12h 10m
2026-07-22 CPA255 HKG → LHR Jul 22, 00:10 UTCJul 22, 05:25 UTC5h 15m
2026-07-21 CPA255 HKG → LHR Jul 21, 15:50 UTCJul 21, 16:05 UTC15m
2026-07-20 CPA234 - Jul 20, 11:40 UTCJul 20, 15:05 UTC3h 25m
2026-07-20 CPA233 - Jul 20, 02:00 UTCJul 20, 06:20 UTC4h 20m
2026-07-19 CPA233 - Jul 19, 17:10 UTCJul 19, 17:30 UTC20m
2026-07-19 CPA549 HND → HKG Jul 19, 07:35 UTCJul 19, 11:25 UTC3h 50m
2026-07-19 CPA548 HKG → HND Jul 19, 01:05 UTCJul 19, 04:55 UTC3h 50m
2026-07-17 CPA867 YVR → HKG Jul 17, 22:20 UTCJul 18, 10:25 UTC12h 6m
2026-07-17 CPA810 HKG → YVR Jul 17, 08:25 UTCJul 17, 20:20 UTC11h 55m
2026-07-16 CPA178 - Jul 16, 23:05 UTCJul 16, 23:25 UTC20m
2026-07-16 CPA178 - Jul 16, 15:05 UTCJul 16, 22:10 UTC7h 5m
2026-07-16 CPA163 - Jul 16, 05:20 UTCJul 16, 13:00 UTC7h 40m
2026-07-16 CPA163 - Jul 16, 04:15 UTCJul 16, 04:30 UTC15m
2026-07-14 CPA885 - Jul 14, 21:20 UTCJul 15, 10:55 UTC13h 34m
2026-07-14 CPA884 HKG → LAX Jul 14, 05:05 UTCJul 14, 18:25 UTC13h 20m
2026-07-13 CPA178 - Jul 13, 22:45 UTCJul 13, 23:10 UTC25m
2026-07-13 CPA178 - Jul 13, 14:25 UTCJul 13, 21:50 UTC7h 25m
2026-07-13 CPA163 HKG → MEL Jul 13, 03:50 UTCJul 13, 12:25 UTC8h 35m
2026-07-12 CPA178 - Jul 12, 22:50 UTCJul 12, 23:15 UTC25m
2026-07-12 CPA178 - Jul 12, 14:35 UTCJul 12, 22:00 UTC7h 25m
2026-07-12 CPA163 HKG → MEL Jul 12, 03:40 UTCJul 12, 12:10 UTC8h 30m
2026-07-11 CPA178 - Jul 11, 22:40 UTCJul 11, 23:10 UTC30m
2026-07-11 CPA178 - Jul 11, 14:10 UTCJul 11, 21:40 UTC7h 30m
2026-07-11 CPA163 HKG → MEL Jul 11, 03:40 UTCJul 11, 12:10 UTC8h 30m
2026-07-11 CPA698 - Jul 11, 00:05 UTCJul 11, 00:35 UTC30m
2026-07-10 CPA698 - Jul 10, 19:30 UTCJul 10, 22:20 UTC2h 50m
2026-07-10 CPA665 - Jul 10, 14:45 UTCJul 10, 17:25 UTC2h 40m
2026-07-10 CPA665 - Jul 10, 12:45 UTCJul 10, 12:55 UTC10m
2026-07-09 CPA885 - Jul 9, 20:40 UTCJul 10, 10:40 UTC14h 0m
2026-07-09 CPA884 HKG → LAX Jul 9, 05:15 UTCJul 9, 18:20 UTC13h 5m
2026-07-08 CPA873 SFO → HKG Jul 8, 08:45 UTCJul 8, 22:20 UTC13h 35m
2026-07-07 CPA872 HKG → SFO Jul 7, 17:45 UTCJul 8, 05:50 UTC12h 5m
2026-07-06 CPA867 - Jul 6, 22:15 UTCJul 7, 10:40 UTC12h 25m
2026-07-06 CPA810 HKG → YVR Jul 6, 08:15 UTCJul 6, 19:30 UTC11h 15m
2026-07-06 CPA250 LHR → HKG Jul 6, 05:00 UTCJul 6, 05:45 UTC45m
2026-07-05 CPA250 LHR → HKG Jul 5, 17:50 UTCJul 5, 20:40 UTC2h 50m
2026-07-04 CPA255 - Jul 4, 23:50 UTCJul 5, 01:05 UTC1h 15m
2026-07-04 CPA255 - Jul 4, 15:45 UTCJul 4, 16:05 UTC20m
2026-07-04 CPA867 - Jul 4, 11:45 UTCJul 4, 12:00 UTC15m
2026-07-03 CPA867 - Jul 3, 22:50 UTCJul 4, 11:10 UTC12h 20m
2026-07-03 CPA810 HKG → YVR Jul 3, 09:30 UTCJul 3, 20:40 UTC11h 10m
2026-07-03 CPA250 LHR → HKG Jul 3, 05:45 UTCJul 3, 06:30 UTC45m
2026-07-02 CPA250 LHR → HKG Jul 2, 18:00 UTCJul 2, 22:15 UTC4h 15m
2026-07-02 CPA255 - Jul 2, 00:10 UTCJul 2, 05:25 UTC5h 15m
2026-07-01 CPA255 - Jul 1, 16:00 UTCJul 1, 16:15 UTC15m

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

Mode-S 78023E frequently asked

What is Mode-S code 78023E?
78023E is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-KPR.
Where is Mode-S 78023E registered?
Mode-S code 78023E is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 78023E broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 78023E, octal 36001076, decimal 7,864,894.
What flights does 78023E operate?
Mode-S 78023E has broadcast 20 distinct callsigns, including CPA255, CPA250, CPA867, CPA178, CPA810.