Apparatus

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sensors Mode-S transponder

7801CA

ICAO 24-bit transponder address · allocated to China

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

Hex
7801CA
Octal
36000712
Decimal
7,864,778
Country
CN
Tail
B-LAE
Type
A333
No current signal · last broadcast 3h ago
Flights observed
323
Distinct callsigns
20
Country
CN
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 7801CA.

Country allocation

The ICAO 24-bit address 7801CA 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
CPA651 - 27 2026-07-19
CPA632 - 22 2026-07-19
CPA654 - 10 2026-06-16
CPA653 - 9 2026-06-16
CPA782 - 8 2026-07-10
CPA539 Cathay Pacific 8 2026-06-11
CPA347 - 8 2026-07-14
CPA783 - 7 2026-07-10
CPA629 - 7 2026-06-23
CPA503 - 7 2026-06-23
CPA312 - 7 2026-07-13
CPA710 - 6 2026-07-10
CPA413 Cathay Pacific 6 2026-06-16
CPA954 - 5 2026-07-04
CPA777 Cathay Pacific 5 2026-05-06
CPA659 - 5 2026-07-09
CPA655 - 5 2026-07-03
CPA608 - 5 2026-06-27
CPA607 - 5 2026-06-27
CPA600 Cathay Pacific 5 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-19 CPA651 - Jul 19, 14:55 UTCJul 19, 22:50 UTC7h 55m
2026-07-19 CPA651 - Jul 19, 13:00 UTCJul 19, 13:15 UTC15m
2026-07-19 CPA973 XMN → HKG Jul 19, 06:00 UTCJul 19, 06:15 UTC15m
2026-07-19 CPA970 - Jul 19, 02:40 UTCJul 19, 02:55 UTC15m
2026-07-19 CPA632 - Jul 19, 00:40 UTCJul 19, 01:00 UTC20m
2026-07-18 CPA651 - Jul 18, 15:00 UTCJul 18, 22:50 UTC7h 50m
2026-07-18 CPA651 - Jul 18, 13:05 UTCJul 18, 13:20 UTC15m
2026-07-18 CPA947 XIY → HKG Jul 18, 10:15 UTCJul 18, 10:55 UTC40m
2026-07-18 CPA946 - Jul 18, 03:40 UTCJul 18, 03:55 UTC15m
2026-07-18 CPA632 - Jul 18, 00:45 UTCJul 18, 01:00 UTC15m
2026-07-17 CPA651 - Jul 17, 15:15 UTCJul 17, 22:45 UTC7h 30m
2026-07-17 CPA651 - Jul 17, 13:15 UTCJul 17, 13:29 UTC15m
2026-07-17 CPA632 - Jul 17, 00:45 UTCJul 17, 01:05 UTC20m
2026-07-16 CPA651 - Jul 16, 13:05 UTCJul 16, 22:45 UTC9h 40m
2026-07-16 CPA356 HKG → HKG Jul 16, 04:25 UTCJul 16, 10:10 UTC5h 45m
2026-07-16 CPA632 - Jul 16, 01:30 UTCJul 16, 01:45 UTC15m
2026-07-15 CPA651 - Jul 15, 16:05 UTCJul 15, 23:25 UTC7h 20m
2026-07-15 CPA651 - Jul 15, 14:05 UTCJul 15, 14:20 UTC15m
2026-07-14 CPA925 HKG → HKG Jul 14, 08:50 UTCJul 14, 15:05 UTC6h 15m
2026-07-14 CPA347 - Jul 14, 03:50 UTCJul 14, 06:50 UTC3h 0m
2026-07-13 CPA312 - Jul 13, 09:45 UTCJul 13, 10:00 UTC15m
2026-07-13 CPA423 KHH → HKG Jul 13, 07:01 UTCJul 13, 08:05 UTC1h 5m
2026-07-13 CPA424 HKG → KHH Jul 13, 04:25 UTCJul 13, 05:35 UTC1h 10m
2026-07-12 CPA964 HKG → HKG Jul 12, 12:25 UTCJul 13, 02:20 UTC13h 55m
2026-07-12 CPA634 - Jul 12, 08:30 UTCJul 12, 08:45 UTC15m
2026-07-12 CPA633 - Jul 12, 00:40 UTCJul 12, 00:55 UTC15m
2026-07-11 CPA652 - Jul 11, 08:35 UTCJul 11, 08:55 UTC20m
2026-07-11 CPA652 - Jul 11, 05:31 UTCJul 11, 06:01 UTC30m
2026-07-11 CPA691 - Jul 11, 00:35 UTCJul 11, 03:50 UTC3h 15m
2026-07-10 CPA782 - Jul 10, 15:20 UTCJul 10, 15:35 UTC15m
2026-07-10 CPA783 - Jul 10, 05:10 UTCJul 10, 13:30 UTC8h 20m
2026-07-10 CPA710 - Jul 10, 03:00 UTCJul 10, 03:15 UTC15m
2026-07-09 CPA710 - Jul 9, 23:45 UTCJul 10, 00:15 UTC30m
2026-07-09 CPA659 - Jul 9, 20:50 UTCJul 9, 21:20 UTC30m
2026-07-09 CPA659 - Jul 9, 18:10 UTCJul 9, 18:25 UTC15m
2026-07-09 CPA782 - Jul 9, 15:30 UTCJul 9, 15:45 UTC15m
2026-07-09 CPA783 - Jul 9, 05:25 UTCJul 9, 13:35 UTC8h 10m
2026-07-08 CPA672 - Jul 8, 18:25 UTCJul 9, 03:30 UTC9h 5m
2026-07-08 CPA673 HKG → HYD Jul 8, 16:20 UTCJul 8, 16:30 UTC10m
2026-07-08 CPA947 - Jul 8, 10:15 UTCJul 8, 10:50 UTC35m
2026-07-08 CPA946 - Jul 8, 03:40 UTCJul 8, 03:55 UTC15m
2026-07-08 CPA407 TPE → HKG Jul 8, 00:30 UTCJul 8, 01:45 UTC1h 15m
2026-07-07 CPA408 HKG → TPE Jul 7, 16:35 UTCJul 7, 17:55 UTC1h 20m
2026-07-07 CPA346 - Jul 7, 05:40 UTCJul 7, 11:25 UTC5h 45m
2026-07-07 CPA710 - Jul 7, 03:00 UTCJul 7, 03:10 UTC10m
2026-07-06 CPA710 - Jul 6, 23:40 UTCJul 7, 00:10 UTC30m
2026-07-06 CPA659 - Jul 6, 20:45 UTCJul 6, 21:15 UTC30m
2026-07-06 CPA659 - Jul 6, 18:05 UTCJul 6, 18:20 UTC15m
2026-07-06 CPA782 - Jul 6, 15:10 UTCJul 6, 15:30 UTC20m
2026-07-06 CPA783 - Jul 6, 05:00 UTCJul 6, 13:30 UTC8h 30m

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

Mode-S 7801CA frequently asked

What is Mode-S code 7801CA?
7801CA is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LAE.
Where is Mode-S 7801CA registered?
Mode-S code 7801CA is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7801CA broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7801CA, octal 36000712, decimal 7,864,778.
What flights does 7801CA operate?
Mode-S 7801CA has broadcast 20 distinct callsigns, including CPA651, CPA632, CPA654, CPA653, CPA782.