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sensors Mode-S transponder

7801C6

ICAO 24-bit transponder address · allocated to China

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

Hex
7801C6
Octal
36000706
Decimal
7,864,774
Country
CN
Tail
B-LAA
Type
A333
No current signal · last broadcast Jul 26, 16:50 UTC
Flights observed
445
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 16:50 UTC

Last known position

Most recent position reported by Mode-S 7801C6.

Country allocation

The ICAO 24-bit address 7801C6 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 22 2026-07-26
CPA700 Cathay Pacific 19 2026-06-09
CPA617 Cathay Pacific 16 2026-06-08
CPA530 Cathay Pacific 13 2026-07-26
CPA473 Cathay Pacific 11 2026-07-24
CPA459 Cathay Pacific 10 2026-06-05
CPA597 Cathay Pacific 9 2026-07-22
CPA479 - 9 2026-06-29
CPA377 - 9 2026-07-06
CPA357 - 9 2026-07-11
CPA472 Cathay Pacific 8 2026-07-24
CPA458 Cathay Pacific 8 2026-06-05
CPA449 - 8 2026-07-16
CPA413 - 8 2026-07-19
CPA345 - 8 2026-07-16
CPA912 Cathay Pacific 7 2026-07-25
CPA448 - 7 2026-07-16
CPA407 - 7 2026-07-14
CPA402 - 7 2026-06-29
CPA356 - 7 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA531 TPE → HKG Jul 26, 15:15 UTCJul 26, 16:40 UTC1h 25m
2026-07-26 CPA531 TPE → HKG Jul 26, 10:10 UTCJul 26, 12:30 UTC2h 20m
2026-07-26 CPA530 HKG → TPE Jul 26, 05:50 UTCJul 26, 08:00 UTC2h 11m
2026-07-25 CPA408 HKG → TPE Jul 25, 15:35 UTCJul 25, 16:55 UTC1h 20m
2026-07-25 CPA960 HKG → HGH Jul 25, 04:40 UTCJul 25, 10:50 UTC6h 10m
2026-07-25 CPA912 MNL → HKG Jul 25, 00:15 UTCJul 25, 01:55 UTC1h 40m
2026-07-24 CPA939 HKG → MNL Jul 24, 14:35 UTCJul 24, 16:25 UTC1h 50m
2026-07-24 CPA473 TPE → HKG Jul 24, 11:05 UTCJul 24, 12:15 UTC1h 10m
2026-07-24 CPA472 HKG → TPE Jul 24, 08:05 UTCJul 24, 09:25 UTC1h 20m
2026-07-24 CPA632 MAA → HKG Jul 24, 02:55 UTCJul 24, 03:15 UTC20m
2026-07-23 CPA651 HKG → MAA Jul 23, 17:25 UTCJul 24, 01:15 UTC7h 50m
2026-07-23 CPA651 HKG → MAA Jul 23, 15:35 UTCJul 23, 15:50 UTC15m
2026-07-23 CPA473 TPE → HKG Jul 23, 11:20 UTCJul 23, 12:40 UTC1h 20m
2026-07-23 CPA472 HKG → TPE Jul 23, 08:40 UTCJul 23, 10:05 UTC1h 25m
2026-07-23 CPA750 BKK → HKG Jul 23, 06:35 UTCJul 23, 06:55 UTC20m
2026-07-23 CPA750 BKK → HKG Jul 23, 04:25 UTCJul 23, 06:00 UTC1h 35m
2026-07-23 CPA705 HKG → BKK Jul 23, 02:25 UTCJul 23, 03:00 UTC35m
2026-07-23 CPA705 HKG → BKK Jul 23, 00:35 UTCJul 23, 00:50 UTC15m
2026-07-22 CPA393 PEK → HKG Jul 22, 14:55 UTCJul 22, 15:25 UTC30m
2026-07-22 CPA393 PEK → HKG Jul 22, 12:20 UTCJul 22, 12:45 UTC25m
2026-07-22 CPA597 KIX → HKG Jul 22, 00:20 UTCJul 22, 03:40 UTC3h 20m
2026-07-21 CPA566 HKG → KIX Jul 21, 18:15 UTCJul 21, 21:30 UTC3h 15m
2026-07-21 CPA531 TPE → HKG Jul 21, 12:35 UTCJul 21, 14:00 UTC1h 25m
2026-07-21 CPA531 TPE → HKG Jul 21, 10:55 UTCJul 21, 11:10 UTC15m
2026-07-21 CPA531 TPE → HKG Jul 21, 08:50 UTCJul 21, 09:30 UTC40m
2026-07-21 CPA530 HKG → TPE Jul 21, 03:45 UTCJul 21, 06:05 UTC2h 20m
2026-07-21 CPA530 HKG → TPE Jul 21, 01:00 UTCJul 21, 02:25 UTC1h 25m
2026-07-20 CPA991 - Jul 20, 13:10 UTCJul 20, 14:10 UTC1h 0m
2026-07-20 CPA990 - Jul 20, 10:00 UTCJul 20, 11:05 UTC1h 5m
2026-07-20 CPA423 KHH → HKG Jul 20, 07:10 UTCJul 20, 08:15 UTC1h 5m
2026-07-20 CPA424 HKG → KHH Jul 20, 04:55 UTCJul 20, 06:00 UTC1h 5m
2026-07-19 CPA413 ICN → HKG Jul 19, 23:35 UTCJul 20, 02:45 UTC3h 10m
2026-07-19 CPA430 HKG → ICN Jul 19, 09:50 UTCJul 19, 13:05 UTC3h 15m
2026-07-19 CPA495 TPE → HKG Jul 19, 05:45 UTCJul 19, 07:00 UTC1h 15m
2026-07-19 CPA494 HKG → TPE Jul 19, 02:55 UTCJul 19, 04:25 UTC1h 30m
2026-07-18 CPA902 MNL → HKG Jul 18, 14:30 UTCJul 18, 14:45 UTC15m
2026-07-18 CPA902 MNL → HKG Jul 18, 13:05 UTCJul 18, 13:40 UTC35m
2026-07-18 CPA903 HKG → MNL Jul 18, 09:40 UTCJul 18, 11:20 UTC1h 40m
2026-07-18 CPA766 - Jul 18, 07:30 UTCJul 18, 07:50 UTC20m
2026-07-18 CPA767 HKG → SGN Jul 18, 01:34 UTCJul 18, 01:54 UTC20m
2026-07-17 CPA954 - Jul 17, 02:59 UTCJul 17, 10:10 UTC7h 10m
2026-07-16 CPA449 KHH → HKG Jul 16, 23:35 UTCJul 17, 00:35 UTC1h 0m
2026-07-16 CPA448 - Jul 16, 14:00 UTCJul 16, 15:05 UTC1h 5m
2026-07-16 CPA960 HKG → HKG Jul 16, 04:45 UTCJul 16, 10:20 UTC5h 35m
2026-07-16 CPA345 - Jul 16, 02:15 UTCJul 16, 02:45 UTC30m
2026-07-15 CPA345 - Jul 15, 23:50 UTCJul 16, 00:10 UTC20m
2026-07-15 CPA344 - Jul 15, 11:45 UTCJul 15, 12:00 UTC15m
2026-07-15 CPA376 HKG → HKG Jul 15, 02:45 UTCJul 15, 08:55 UTC6h 10m
2026-07-14 CPA449 KHH → HKG Jul 14, 23:40 UTCJul 15, 00:45 UTC1h 5m
2026-07-14 CPA448 HKG → KHH Jul 14, 14:10 UTCJul 14, 15:30 UTC1h 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-LAA page for operator, model, and routing details .

Mode-S 7801C6 frequently asked

What is Mode-S code 7801C6?
7801C6 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LAA.
Where is Mode-S 7801C6 registered?
Mode-S code 7801C6 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7801C6 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 16:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7801C6, octal 36000706, decimal 7,864,774.
What flights does 7801C6 operate?
Mode-S 7801C6 has broadcast 20 distinct callsigns, including CPA531, CPA700, CPA617, CPA530, CPA473.