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
99
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 12 2026-06-09
CPA250 Cathay Pacific 9 2026-06-03
CPA867 Cathay Pacific 7 2026-06-04
CPA549 Cathay Pacific 7 2026-06-07
CPA810 Cathay Pacific 6 2026-06-03
CPA289 Cathay Pacific 6 2026-05-23
CPA548 Cathay Pacific 4 2026-06-07
CPA288 Cathay Pacific 4 2026-05-23
CPA233 Cathay Pacific 4 2026-06-04
CPA873 Cathay Pacific 3 2026-05-10
CPA865 Cathay Pacific 3 2026-05-28
CPA234 Cathay Pacific 3 2026-06-05
CPA178 Cathay Pacific 3 2026-06-09
CPA100 Cathay Pacific 3 2026-05-02
CPA888 Cathay Pacific 2 2026-05-27
CPA885 Cathay Pacific 2 2026-05-14
CPA872 Cathay Pacific 2 2026-05-09
CPA581 Cathay Pacific 2 2026-06-09
CPA473 Cathay Pacific 2 2026-05-04
CPA421 Cathay Pacific 2 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-09 CPA255 HKG → LHR Jun 9, 20:55 UTCJun 9, 21:10 UTC15m
2026-06-09 CPA581 CTS → HKG Jun 9, 12:45 UTCJun 9, 13:00 UTC15m
2026-06-09 CPA581 CTS → HKG Jun 9, 08:05 UTCJun 9, 12:10 UTC4h 5m
2026-06-09 CPA580 HKG → CTS Jun 9, 02:25 UTCJun 9, 06:25 UTC4h 0m
2026-06-09 CPA178 MEL → HKG Jun 9, 00:15 UTCJun 9, 00:30 UTC15m
2026-06-08 CPA178 MEL → HKG Jun 8, 15:20 UTCJun 8, 22:50 UTC7h 30m
2026-06-08 CPA163 HKG → MEL Jun 8, 05:00 UTCJun 8, 13:25 UTC8h 25m
2026-06-07 CPA549 HND → HKG Jun 7, 07:45 UTCJun 7, 11:35 UTC3h 50m
2026-06-07 CPA548 HKG → HND Jun 7, 01:15 UTCJun 7, 04:45 UTC3h 30m
2026-06-06 CPA549 HND → HKG Jun 6, 12:00 UTCJun 6, 12:14 UTC15m
2026-06-06 CPA549 HND → HKG Jun 6, 08:20 UTCJun 6, 11:25 UTC3h 5m
2026-06-06 CPA548 HKG → HND Jun 6, 00:55 UTCJun 6, 04:20 UTC3h 25m
2026-06-05 CPA234 MXP → HKG Jun 5, 21:40 UTCJun 5, 22:15 UTC35m
2026-06-05 CPA234 MXP → HKG Jun 5, 11:05 UTCJun 5, 14:40 UTC3h 35m
2026-06-04 CPA233 HKG → MXP Jun 4, 22:45 UTCJun 5, 06:05 UTC7h 20m
2026-06-04 CPA233 HKG → MXP Jun 4, 17:20 UTCJun 4, 17:35 UTC15m
2026-06-04 CPA867 YVR → HKG Jun 4, 09:55 UTCJun 4, 10:10 UTC15m
2026-06-03 CPA867 YVR → HKG Jun 3, 22:05 UTCJun 4, 09:25 UTC11h 20m
2026-06-03 CPA810 HKG → YVR Jun 3, 08:25 UTCJun 3, 19:50 UTC11h 25m
2026-06-03 CPA250 LHR → HKG Jun 3, 06:00 UTCJun 3, 06:30 UTC30m
2026-06-02 CPA250 LHR → HKG Jun 2, 18:30 UTCJun 2, 23:00 UTC4h 30m
2026-06-01 CPA255 HKG → LHR Jun 1, 20:45 UTCJun 2, 05:15 UTC8h 30m
2026-06-01 CPA255 HKG → LHR Jun 1, 15:40 UTCJun 1, 16:05 UTC25m
2026-06-01 CPA867 YVR → HKG Jun 1, 09:55 UTCJun 1, 10:10 UTC15m
2026-05-31 CPA867 YVR → HKG May 31, 21:45 UTCJun 1, 09:20 UTC11h 35m
2026-05-31 CPA810 HKG → YVR May 31, 08:45 UTCMay 31, 19:45 UTC11h 0m
2026-05-30 CPA250 LHR → HKG May 30, 17:40 UTCMay 31, 00:50 UTC7h 10m
2026-05-30 CPA255 HKG → LHR May 30, 00:55 UTCMay 30, 06:15 UTC5h 20m
2026-05-29 CPA255 HKG → LHR May 29, 16:15 UTCMay 29, 16:35 UTC20m
2026-05-28 CPA865 YVR → HKG May 28, 08:00 UTCMay 28, 20:45 UTC12h 45m
2026-05-27 CPA888 HKG → YVR May 27, 17:30 UTCMay 28, 05:10 UTC11h 40m
2026-05-26 CPA867 YVR → HKG May 26, 21:44 UTCMay 27, 10:35 UTC12h 50m
2026-05-26 CPA810 HKG → YVR May 26, 08:30 UTCMay 26, 20:00 UTC11h 30m
2026-05-26 CPA250 LHR → HKG May 26, 05:49 UTCMay 26, 06:20 UTC30m
2026-05-25 CPA250 LHR → HKG May 25, 18:05 UTCMay 25, 22:40 UTC4h 34m
2026-05-25 CPA255 HKG → LHR May 25, 02:40 UTCMay 25, 05:25 UTC2h 45m
2026-05-24 CPA255 HKG → LHR May 24, 16:10 UTCMay 24, 16:25 UTC15m
2026-05-23 CPA288 FRA → HKG May 23, 12:30 UTCMay 23, 14:40 UTC2h 10m
2026-05-23 CPA289 HKG → FRA May 23, 02:45 UTCMay 23, 04:45 UTC2h 0m
2026-05-22 CPA289 HKG → FRA May 22, 16:20 UTCMay 22, 16:35 UTC15m
2026-05-22 CPA549 HND → HKG May 22, 12:20 UTCMay 22, 12:40 UTC20m
2026-05-22 CPA549 HND → HKG May 22, 08:35 UTCMay 22, 11:40 UTC3h 5m
2026-05-22 CPA548 HKG → HND May 22, 01:25 UTCMay 22, 05:10 UTC3h 45m
2026-05-21 CPA178 MEL → HKG May 21, 14:05 UTCMay 21, 22:45 UTC8h 40m
2026-05-21 CPA163 HKG → MEL May 21, 03:50 UTCMay 21, 12:05 UTC8h 15m
2026-05-20 CPA865 YVR → HKG May 20, 20:40 UTCMay 20, 20:55 UTC15m
2026-05-20 CPA865 YVR → HKG May 20, 07:55 UTCMay 20, 20:05 UTC12h 10m
2026-05-19 CPA888 HKG → YVR May 19, 17:30 UTCMay 20, 04:25 UTC10h 55m
2026-05-18 CPA234 MXP → HKG May 18, 11:20 UTCMay 18, 22:45 UTC11h 24m
2026-05-18 CPA233 HKG → MXP May 18, 01:05 UTCMay 18, 05:45 UTC4h 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-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, CPA549, CPA810.