Apparatus

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sensors Mode-S transponder

7801B5

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-HLV · AIRBUS A-330-300

Hex
7801B5
Octal
36000665
Decimal
7,864,757
Country
CN
Tail
B-HLV
Type
A333
No current signal · last broadcast 11h ago
Flights observed
280
Distinct callsigns
20
Country
CN
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 7801B5.

Country allocation

The ICAO 24-bit address 7801B5 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
CPA531 Cathay Pacific 18 2026-06-09
CPA530 Cathay Pacific 11 2026-06-09
CPA961 Cathay Pacific 8 2026-06-05
CPA960 Cathay Pacific 8 2026-06-05
CPA700 Cathay Pacific 8 2026-06-08
CPA393 Cathay Pacific 8 2026-06-12
CPA995 Cathay Pacific 7 2026-06-06
CPA954 Cathay Pacific 7 2026-06-10
CPA914 Cathay Pacific 7 2026-06-06
CPA617 Cathay Pacific 7 2026-06-07
CPA473 Cathay Pacific 6 2026-05-28
CPA392 Cathay Pacific 6 2026-06-12
CPA983 Cathay Pacific 5 2026-06-07
CPA982 Cathay Pacific 5 2026-06-07
CPA965 Cathay Pacific 5 2026-06-11
CPA964 Cathay Pacific 5 2026-06-10
CPA951 Cathay Pacific 5 2026-06-10
CPA945 Cathay Pacific 5 2026-06-07
CPA928 Cathay Pacific 5 2026-06-07
CPA912 Cathay Pacific 5 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-12 CPA393 PEK → HKG Jun 12, 13:35 UTCJun 12, 13:55 UTC20m
2026-06-12 CPA393 PEK → HKG Jun 12, 11:15 UTCJun 12, 11:25 UTC10m
2026-06-12 CPA392 HKG → PEK Jun 12, 08:45 UTCJun 12, 08:55 UTC10m
2026-06-12 CPA392 HKG → PEK Jun 12, 06:10 UTCJun 12, 06:30 UTC20m
2026-06-12 CPA345 PEK → HKG Jun 12, 01:50 UTCJun 12, 02:20 UTC30m
2026-06-11 CPA344 HKG → PEK Jun 11, 12:05 UTCJun 11, 12:20 UTC15m
2026-06-11 CPA357 NKG → HKG Jun 11, 10:10 UTCJun 11, 10:30 UTC20m
2026-06-11 CPA356 HKG → NKG Jun 11, 04:35 UTCJun 11, 04:50 UTC15m
2026-06-11 CPA965 HGH → HKG Jun 11, 02:00 UTCJun 11, 02:20 UTC20m
2026-06-10 - - Jun 10, 13:20 UTCJun 10, 13:30 UTC10m
2026-06-10 CPA964 HKG → HGH Jun 10, 12:40 UTCJun 10, 12:50 UTC10m
2026-06-10 CPA951 TAO → HKG Jun 10, 09:30 UTCJun 10, 09:55 UTC25m
2026-06-10 CPA954 HKG → TAO Jun 10, 03:35 UTCJun 10, 09:00 UTC5h 25m
2026-06-10 CPA954 HKG → TAO Jun 10, 02:30 UTCJun 10, 02:45 UTC15m
2026-06-09 CPA531 TPE → HKG Jun 9, 13:45 UTCJun 9, 14:00 UTC15m
2026-06-09 CPA531 TPE → HKG Jun 9, 12:35 UTCJun 9, 13:05 UTC30m
2026-06-09 CPA531 TPE → HKG Jun 9, 10:45 UTCJun 9, 11:10 UTC25m
2026-06-09 CPA531 TPE → HKG Jun 9, 08:25 UTCJun 9, 09:15 UTC50m
2026-06-09 CPA530 HKG → TPE Jun 9, 03:50 UTCJun 9, 05:50 UTC2h 0m
2026-06-09 CPA530 HKG → TPE Jun 9, 00:55 UTCJun 9, 02:15 UTC1h 20m
2026-06-08 CPA393 PEK → HKG Jun 8, 14:50 UTCJun 8, 15:30 UTC40m
2026-06-08 CPA393 PEK → HKG Jun 8, 12:15 UTCJun 8, 12:40 UTC25m
2026-06-08 CPA392 HKG → PEK Jun 8, 07:50 UTCJun 8, 08:05 UTC15m
2026-06-08 CPA700 BKK → HKG Jun 8, 02:50 UTCJun 8, 02:55 UTC5m
2026-06-08 CPA700 BKK → HKG Jun 8, 00:45 UTCJun 8, 02:15 UTC1h 30m
2026-06-07 CPA617 HKG → BKK Jun 7, 16:35 UTCJun 7, 17:15 UTC40m
2026-06-07 CPA617 HKG → BKK Jun 7, 14:55 UTCJun 7, 15:10 UTC15m
2026-06-07 CPA945 CKG → HKG Jun 7, 12:05 UTCJun 7, 12:35 UTC30m
2026-06-07 CPA928 HKG → CKG Jun 7, 06:30 UTCJun 7, 06:45 UTC15m
2026-06-07 CPA983 CAN → HKG Jun 7, 03:10 UTCJun 7, 03:25 UTC15m
2026-06-07 CPA982 HKG → CAN Jun 7, 00:34 UTCJun 7, 00:44 UTC10m
2026-06-06 CPA337 PEK → HKG Jun 6, 14:30 UTCJun 6, 14:50 UTC20m
2026-06-06 CPA337 PEK → HKG Jun 6, 12:00 UTCJun 6, 12:20 UTC20m
2026-06-06 CPA336 HKG → PEK Jun 6, 07:40 UTCJun 6, 08:00 UTC20m
2026-06-06 CPA995 FOC → HKG Jun 6, 05:40 UTCJun 6, 05:45 UTC5m
2026-06-06 CPA914 HKG → FOC Jun 6, 00:45 UTCJun 6, 00:55 UTC10m
2026-06-05 CPA953 CAN → HKG Jun 5, 21:50 UTCJun 5, 22:25 UTC35m
2026-06-05 CPA950 HKG → CAN Jun 5, 18:30 UTCJun 5, 18:45 UTC15m
2026-06-05 CPA989 CAN → HKG Jun 5, 15:30 UTCJun 5, 16:05 UTC35m
2026-06-05 CPA988 HKG → CAN Jun 5, 12:35 UTCJun 5, 12:50 UTC15m
2026-06-05 CPA961 HGH → HKG Jun 5, 10:00 UTCJun 5, 10:10 UTC10m
2026-06-05 CPA960 HKG → HGH Jun 5, 04:50 UTCJun 5, 05:05 UTC15m
2026-06-05 CPA965 HGH → HKG Jun 5, 01:55 UTCJun 5, 02:05 UTC10m
2026-06-04 CPA964 HKG → HGH Jun 4, 12:35 UTCJun 4, 13:20 UTC45m
2026-06-04 CPA961 HGH → HKG Jun 4, 09:45 UTCJun 4, 10:05 UTC20m
2026-06-04 CPA960 HKG → HGH Jun 4, 04:35 UTCJun 4, 04:50 UTC15m
2026-06-04 CPA345 PEK → HKG Jun 4, 02:20 UTCJun 4, 02:45 UTC25m
2026-06-03 CPA345 PEK → HKG Jun 3, 23:45 UTCJun 4, 00:05 UTC20m
2026-06-03 CPA344 HKG → PEK Jun 3, 11:20 UTCJun 3, 11:40 UTC20m
2026-06-02 CPA961 HGH → HKG Jun 2, 09:55 UTCJun 2, 10:05 UTC10m

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

Mode-S 7801B5 frequently asked

What is Mode-S code 7801B5?
7801B5 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-HLV.
Where is Mode-S 7801B5 registered?
Mode-S code 7801B5 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7801B5 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7801B5, octal 36000665, decimal 7,864,757.
What flights does 7801B5 operate?
Mode-S 7801B5 has broadcast 20 distinct callsigns, including CPA531, CPA530, CPA961, CPA960, CPA700.