Apparatus

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sensors Mode-S transponder

7801C7

ICAO 24-bit transponder address · allocated to China

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

Hex
7801C7
Octal
36000707
Decimal
7,864,775
Country
CN
Tail
B-LAB
Type
A333
Transponder active on ground
Flights observed
202
Distinct callsigns
20
Country
CN
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 7801C7.

Country allocation

The ICAO 24-bit address 7801C7 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
CPA750 Cathay Pacific 11 2026-05-29
CPA705 Cathay Pacific 10 2026-05-29
CPA381 Cathay Pacific 8 2026-06-05
CPA531 Cathay Pacific 7 2026-06-07
CPA479 Cathay Pacific 7 2026-06-02
CPA987 Cathay Pacific 5 2026-05-25
CPA986 Cathay Pacific 5 2026-05-25
CPA939 Cathay Pacific 5 2026-05-30
CPA912 Cathay Pacific 5 2026-05-31
CPA402 Cathay Pacific 5 2026-06-02
CPA380 Cathay Pacific 5 2026-06-04
CPA983 Cathay Pacific 4 2026-06-06
CPA714 Cathay Pacific 4 2026-06-01
CPA700 Cathay Pacific 4 2026-05-04
CPA654 Cathay Pacific 4 2026-05-11
CPA653 Cathay Pacific 4 2026-05-11
CPA617 Cathay Pacific 4 2026-05-03
CPA530 Cathay Pacific 4 2026-06-07
CPA376 Cathay Pacific 4 2026-05-18
CPA982 Cathay Pacific 3 2026-06-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-10 CPA347 PEK → HKG Jun 10, 02:25 UTCJun 10, 05:20 UTC2h 55m
2026-06-09 CPA312 HKG → PEK Jun 9, 09:40 UTCJun 9, 10:00 UTC20m
2026-06-09 CPA959 HGH → HKG Jun 9, 04:45 UTCJun 9, 05:35 UTC50m
2026-06-09 CPA958 HKG → HGH Jun 9, 00:15 UTCJun 9, 00:30 UTC15m
2026-06-07 CPA531 TPE → HKG Jun 7, 13:40 UTCJun 7, 13:55 UTC15m
2026-06-07 CPA531 TPE → HKG Jun 7, 12:35 UTCJun 7, 13:05 UTC30m
2026-06-07 CPA531 TPE → HKG Jun 7, 10:30 UTCJun 7, 11:00 UTC30m
2026-06-07 CPA531 TPE → HKG Jun 7, 08:20 UTCJun 7, 09:00 UTC40m
2026-06-07 CPA530 HKG → TPE Jun 7, 03:45 UTCJun 7, 06:05 UTC2h 20m
2026-06-07 CPA530 HKG → TPE Jun 7, 01:04 UTCJun 7, 02:25 UTC1h 20m
2026-06-06 CPA945 CKG → HKG Jun 6, 06:45 UTCJun 6, 12:10 UTC5h 25m
2026-06-06 CPA928 HKG → CKG Jun 6, 06:25 UTCJun 6, 06:40 UTC15m
2026-06-06 CPA983 CAN → HKG Jun 6, 04:20 UTCJun 6, 04:30 UTC10m
2026-06-06 CPA983 CAN → HKG Jun 6, 03:35 UTCJun 6, 03:45 UTC10m
2026-06-06 CPA982 HKG → CAN Jun 6, 00:15 UTCJun 6, 00:35 UTC20m
2026-06-05 CPA381 PVG → HKG Jun 5, 07:55 UTCJun 5, 13:40 UTC5h 45m
2026-06-05 CPA937 WUH → HKG Jun 5, 05:40 UTCJun 5, 06:10 UTC30m
2026-06-05 CPA924 HKG → WUH Jun 5, 01:15 UTCJun 5, 01:35 UTC20m
2026-06-04 CPA381 PVG → HKG Jun 4, 13:15 UTCJun 4, 13:30 UTC15m
2026-06-04 CPA381 PVG → HKG Jun 4, 08:15 UTCJun 4, 12:25 UTC4h 10m
2026-06-04 CPA380 HKG → PVG Jun 4, 07:25 UTCJun 4, 07:40 UTC15m
2026-06-04 CPA710 SIN → HKG Jun 4, 02:40 UTCJun 4, 03:05 UTC25m
2026-06-03 CPA710 SIN → HKG Jun 3, 23:35 UTCJun 4, 00:05 UTC30m
2026-06-03 CPA659 HKG → SIN Jun 3, 18:00 UTCJun 3, 18:15 UTC15m
2026-06-03 CPA381 PVG → HKG Jun 3, 13:05 UTCJun 3, 13:20 UTC15m
2026-06-03 CPA380 HKG → PVG Jun 3, 08:15 UTCJun 3, 12:30 UTC4h 15m
2026-06-03 CPA380 HKG → PVG Jun 3, 07:20 UTCJun 3, 07:40 UTC20m
2026-06-03 CPA431 KHH → HKG Jun 3, 03:30 UTCJun 3, 04:30 UTC1h 0m
2026-06-03 CPA432 HKG → KHH Jun 3, 00:55 UTCJun 3, 02:00 UTC1h 5m
2026-06-02 CPA479 TPE → HKG Jun 2, 14:05 UTCJun 2, 14:25 UTC20m
2026-06-02 CPA479 TPE → HKG Jun 2, 13:05 UTCJun 2, 13:35 UTC30m
2026-06-02 CPA402 HKG → TPE Jun 2, 10:35 UTCJun 2, 11:55 UTC1h 20m
2026-06-02 CPA766 SGN → HKG Jun 2, 06:20 UTCJun 2, 06:40 UTC20m
2026-06-02 CPA767 HKG → SGN Jun 2, 00:50 UTCJun 2, 01:05 UTC15m
2026-06-01 CPA714 SIN → HKG Jun 1, 21:30 UTCJun 1, 21:45 UTC15m
2026-06-01 CPA714 SIN → HKG Jun 1, 18:15 UTCJun 1, 18:40 UTC25m
2026-06-01 CPA715 HKG → SIN Jun 1, 16:10 UTCJun 1, 16:25 UTC15m
2026-06-01 CPA715 HKG → SIN Jun 1, 13:25 UTCJun 1, 13:40 UTC15m
2026-06-01 CPA589 FUK → HKG Jun 1, 11:40 UTCJun 1, 11:55 UTC15m
2026-06-01 CPA589 FUK → HKG Jun 1, 10:35 UTCJun 1, 11:05 UTC30m
2026-06-01 CPA588 HKG → FUK Jun 1, 03:40 UTCJun 1, 05:05 UTC1h 25m
2026-05-31 CPA912 MNL → HKG May 31, 00:15 UTCMay 31, 11:05 UTC10h 50m
2026-05-30 CPA939 HKG → MNL May 30, 14:20 UTCMay 30, 16:05 UTC1h 45m
2026-05-30 CPA459 KHH → HKG May 30, 11:15 UTCMay 30, 12:25 UTC1h 10m
2026-05-30 CPA458 HKG → KHH May 30, 08:45 UTCMay 30, 09:50 UTC1h 5m
2026-05-30 CPA924 HKG → WUH May 30, 01:25 UTCMay 30, 06:15 UTC4h 50m
2026-05-29 CPA750 BKK → HKG May 29, 07:30 UTCMay 29, 07:55 UTC25m
2026-05-29 CPA750 BKK → HKG May 29, 05:20 UTCMay 29, 05:50 UTC30m
2026-05-29 CPA705 HKG → BKK May 29, 00:30 UTCMay 29, 02:50 UTC2h 20m
2026-05-28 CPA902 MNL → HKG May 28, 13:10 UTCMay 28, 14:50 UTC1h 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-LAB page for operator, model, and routing details .

Mode-S 7801C7 frequently asked

What is Mode-S code 7801C7?
7801C7 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LAB.
Where is Mode-S 7801C7 registered?
Mode-S code 7801C7 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7801C7 broadcasting right now?
Mode-S 7801C7 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7801C7, octal 36000707, decimal 7,864,775.
What flights does 7801C7 operate?
Mode-S 7801C7 has broadcast 20 distinct callsigns, including CPA750, CPA705, CPA381, CPA531, CPA479.