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
No current signal · last broadcast 1h ago
Flights observed
385
Distinct callsigns
20
Country
CN
Last broadcast
1h 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
CPA531 Cathay Pacific 33 2026-07-24
CPA530 Cathay Pacific 21 2026-07-24
CPA407 Cathay Pacific 12 2026-07-23
CPA381 - 12 2026-07-22
CPA750 Cathay Pacific 11 2026-05-29
CPA705 Cathay Pacific 10 2026-05-29
CPA408 - 9 2026-07-22
CPA479 - 8 2026-06-19
CPA380 - 7 2026-07-04
CPA995 Cathay Pacific 6 2026-07-25
CPA914 Cathay Pacific 6 2026-07-25
CPA780 - 6 2026-07-14
CPA459 Cathay Pacific 6 2026-07-23
CPA458 Cathay Pacific 6 2026-07-23
CPA402 - 6 2026-06-19
CPA392 Cathay Pacific 6 2026-07-20
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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CPA600 PNH → HKG Jul 25, 15:35 UTCJul 25, 15:45 UTC10m
2026-07-25 CPA655 HKG → PNH Jul 25, 09:30 UTCJul 25, 09:55 UTC25m
2026-07-25 CPA995 FOC → HKG Jul 25, 04:55 UTCJul 25, 05:55 UTC1h 0m
2026-07-25 CPA914 HKG → FOC Jul 25, 01:15 UTCJul 25, 01:30 UTC15m
2026-07-24 CPA531 TPE → HKG Jul 24, 12:15 UTCJul 24, 13:25 UTC1h 10m
2026-07-24 CPA531 TPE → HKG Jul 24, 10:05 UTCJul 24, 10:40 UTC35m
2026-07-24 CPA531 TPE → HKG Jul 24, 08:00 UTCJul 24, 08:40 UTC40m
2026-07-24 CPA530 HKG → TPE Jul 24, 04:15 UTCJul 24, 06:35 UTC2h 20m
2026-07-24 CPA530 HKG → TPE Jul 24, 00:55 UTCJul 24, 02:15 UTC1h 20m
2026-07-23 CPA989 CAN → HKG Jul 23, 16:40 UTCJul 23, 17:10 UTC30m
2026-07-23 CPA988 HKG → CAN Jul 23, 14:20 UTCJul 23, 14:30 UTC10m
2026-07-23 CPA459 KHH → HKG Jul 23, 11:15 UTCJul 23, 12:20 UTC1h 5m
2026-07-23 CPA458 HKG → KHH Jul 23, 08:55 UTCJul 23, 10:00 UTC1h 5m
2026-07-23 CPA423 KHH → HKG Jul 23, 06:05 UTCJul 23, 07:05 UTC1h 0m
2026-07-23 CPA424 HKG → KHH Jul 23, 03:25 UTCJul 23, 04:35 UTC1h 10m
2026-07-23 CPA407 TPE → HKG Jul 23, 00:10 UTCJul 23, 01:30 UTC1h 20m
2026-07-22 CPA408 - Jul 22, 15:05 UTCJul 22, 16:25 UTC1h 20m
2026-07-22 CPA381 - Jul 22, 12:00 UTCJul 22, 13:15 UTC1h 15m
2026-07-22 CPA509 NRT → HKG Jul 22, 00:50 UTCJul 22, 04:45 UTC3h 55m
2026-07-21 CPA524 - Jul 21, 17:40 UTCJul 21, 21:40 UTC4h 0m
2026-07-21 CPA902 MNL → HKG Jul 21, 12:55 UTCJul 21, 14:35 UTC1h 40m
2026-07-21 CPA903 HKG → MNL Jul 21, 09:05 UTCJul 21, 10:55 UTC1h 50m
2026-07-21 CPA937 WUH → HKG Jul 21, 05:55 UTCJul 21, 06:35 UTC40m
2026-07-21 CPA924 - Jul 21, 01:20 UTCJul 21, 01:40 UTC20m
2026-07-20 CPA393 PEK → HKG Jul 20, 13:20 UTCJul 20, 16:45 UTC3h 25m
2026-07-20 CPA392 HKG → PEK Jul 20, 10:00 UTCJul 20, 10:35 UTC35m
2026-07-20 CPA392 HKG → PEK Jul 20, 07:35 UTCJul 20, 07:50 UTC15m
2026-07-20 CPA995 FOC → HKG Jul 20, 05:15 UTCJul 20, 06:00 UTC45m
2026-07-20 CPA914 HKG → FOC Jul 20, 01:15 UTCJul 20, 01:35 UTC20m
2026-07-19 CPA782 - Jul 19, 15:25 UTCJul 19, 15:45 UTC20m
2026-07-19 CPA783 - Jul 19, 04:55 UTCJul 19, 13:35 UTC8h 40m
2026-07-18 CPA345 - Jul 18, 23:45 UTCJul 19, 02:45 UTC3h 0m
2026-07-18 CPA344 HKG → PEK Jul 18, 11:35 UTCJul 18, 11:55 UTC20m
2026-07-18 CPA356 HKG → HKG Jul 18, 03:40 UTCJul 18, 09:40 UTC6h 0m
2026-07-18 CPA407 TPE → HKG Jul 18, 00:10 UTCJul 18, 01:25 UTC1h 15m
2026-07-17 CPA408 HKG → TPE Jul 17, 15:15 UTCJul 17, 16:40 UTC1h 25m
2026-07-17 CPA459 KHH → HKG Jul 17, 11:25 UTCJul 17, 12:35 UTC1h 10m
2026-07-17 CPA458 HKG → KHH Jul 17, 08:59 UTCJul 17, 10:00 UTC1h 0m
2026-07-17 CPA423 KHH → HKG Jul 17, 06:05 UTCJul 17, 07:14 UTC1h 10m
2026-07-17 CPA424 HKG → KHH Jul 17, 03:20 UTCJul 17, 04:29 UTC1h 10m
2026-07-17 CPA407 TPE → HKG Jul 17, 01:15 UTCJul 17, 01:29 UTC15m
2026-07-17 CPA407 TPE → HKG Jul 17, 00:10 UTCJul 17, 01:09 UTC1h 0m
2026-07-16 CPA408 HKG → TPE Jul 16, 15:45 UTCJul 16, 17:10 UTC1h 25m
2026-07-16 CPA381 HKG → HKG Jul 16, 08:05 UTCJul 16, 14:00 UTC5h 55m
2026-07-16 CPA995 - Jul 16, 05:40 UTCJul 16, 06:05 UTC25m
2026-07-16 CPA914 - Jul 16, 01:15 UTCJul 16, 01:30 UTC15m
2026-07-15 CPA531 TPE → HKG Jul 15, 13:10 UTCJul 15, 14:30 UTC1h 20m
2026-07-15 CPA531 - Jul 15, 10:35 UTCJul 15, 10:55 UTC20m
2026-07-15 CPA531 - Jul 15, 08:35 UTCJul 15, 09:20 UTC45m
2026-07-15 CPA530 - Jul 15, 04:35 UTCJul 15, 06:55 UTC2h 20m

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?
No active broadcast right now. Last signal was 1h ago.
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 CPA531, CPA530, CPA407, CPA381, CPA750.