Apparatus

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sensors Mode-S transponder

780A3F

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LJJ · BOEING 747-8

Hex
780A3F
Octal
36005077
Decimal
7,866,943
Country
CN
Tail
B-LJJ
Type
B748
No current signal · last broadcast 2h ago
Flights observed
255
Distinct callsigns
20
Country
CN
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 780A3F.

Country allocation

The ICAO 24-bit address 780A3F 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
CPA096 - 20 2026-07-13
CPA097 - 19 2026-07-14
CPA3298 Cathay Pacific 9 2026-05-05
CPA084 - 9 2026-06-28
CPA3485 Cathay Pacific 7 2026-06-15
CPA3283 - 7 2026-07-12
CPA3174 - 7 2026-06-25
CPA3035 Cathay Pacific 7 2026-06-23
CPA085 Cathay Pacific 7 2026-05-06
CPA083 - 7 2026-06-28
CPA3408 Cathay Pacific 6 2026-06-06
CPA3194 Cathay Pacific 6 2026-06-14
CPA037 - 6 2026-07-01
CPA005 - 6 2026-05-26
CPA2095 Cathay Pacific 5 2026-05-29
CPA2093 Cathay Pacific 5 2026-06-11
CPA094 - 5 2026-06-12
CPA3144 - 4 2026-07-09
CPA3032 - 4 2026-06-23
CPA2094 Cathay Pacific 4 2026-05-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CPA097 - Jul 14, 03:00 UTCJul 14, 13:15 UTC10h 15m
2026-07-13 CPA097 - Jul 13, 15:15 UTCJul 14, 01:20 UTC10h 5m
2026-07-13 CPA096 - Jul 13, 06:01 UTCJul 13, 12:05 UTC6h 5m
2026-07-12 CPA096 HKG → ANC Jul 12, 18:45 UTCJul 13, 04:25 UTC9h 40m
2026-07-12 CPA3283 ANC → HKG Jul 12, 05:45 UTCJul 12, 15:30 UTC9h 45m
2026-07-11 CPA3283 ATL → ANC Jul 11, 21:45 UTCJul 12, 04:30 UTC6h 45m
2026-07-11 CPA3272 - Jul 11, 17:10 UTCJul 11, 18:50 UTC1h 40m
2026-07-11 CPA3272 - Jul 11, 07:25 UTCJul 11, 15:05 UTC7h 40m
2026-07-10 CPA3272 HKG → ANC Jul 10, 20:25 UTCJul 11, 06:05 UTC9h 40m
2026-07-10 CPA2048 - Jul 10, 16:55 UTCJul 10, 17:20 UTC25m
2026-07-10 CPA2048 - Jul 10, 16:00 UTCJul 10, 16:10 UTC10m
2026-07-10 CPA2049 - Jul 10, 11:35 UTCJul 10, 11:50 UTC15m
2026-07-09 CPA3251 - Jul 9, 20:45 UTCJul 10, 08:50 UTC12h 5m
2026-07-09 CPA3144 - Jul 9, 14:40 UTCJul 9, 15:05 UTC25m
2026-07-09 CPA3144 - Jul 9, 10:05 UTCJul 9, 12:55 UTC2h 50m
2026-07-09 CPA043 - Jul 9, 04:30 UTCJul 9, 07:40 UTC3h 10m
2026-07-09 CPA043 - Jul 9, 02:45 UTCJul 9, 02:55 UTC10m
2026-07-07 CPA2046 - Jul 7, 23:10 UTCJul 7, 23:40 UTC30m
2026-07-07 CPA2046 - Jul 7, 18:40 UTCJul 7, 21:30 UTC2h 50m
2026-07-07 CPA2045 - Jul 7, 12:20 UTCJul 7, 16:30 UTC4h 10m
2026-07-07 CPA2045 - Jul 7, 11:35 UTCJul 7, 11:50 UTC15m
2026-07-07 CPA015 NRT → TPE Jul 7, 06:45 UTCJul 7, 08:00 UTC1h 15m
2026-07-07 CPA015 NRT → TPE Jul 7, 03:20 UTCJul 7, 03:50 UTC30m
2026-07-07 CPA015 NRT → TPE Jul 7, 01:00 UTCJul 7, 02:15 UTC1h 15m
2026-07-06 CPA006 HKG → NRT Jul 6, 17:30 UTCJul 6, 21:20 UTC3h 50m
2026-07-06 CPA097 - Jul 6, 02:35 UTCJul 6, 12:55 UTC10h 20m
2026-07-05 CPA097 - Jul 5, 19:15 UTCJul 6, 01:00 UTC5h 45m
2026-07-05 CPA097 - Jul 5, 15:10 UTCJul 5, 15:25 UTC15m
2026-07-05 CPA096 ANC → HKG Jul 5, 06:05 UTCJul 5, 11:55 UTC5h 50m
2026-07-04 CPA096 ANC → HKG Jul 4, 19:05 UTCJul 5, 04:30 UTC9h 25m
2026-07-04 CPA3132 - Jul 4, 15:25 UTCJul 4, 15:55 UTC30m
2026-07-04 CPA3132 - Jul 4, 12:05 UTCJul 4, 13:50 UTC1h 45m
2026-07-04 CPA039 HKG → BOM Jul 4, 06:50 UTCJul 4, 07:10 UTC20m
2026-07-04 CPA039 HKG → BOM Jul 4, 03:10 UTCJul 4, 05:40 UTC2h 30m
2026-07-04 CPA039 HKG → BOM Jul 4, 01:50 UTCJul 4, 02:00 UTC10m
2026-07-02 CPA2014 - Jul 2, 17:10 UTCJul 3, 04:10 UTC11h 0m
2026-07-02 CPA2014 - Jul 2, 10:25 UTCJul 2, 11:10 UTC45m
2026-07-01 CPA037 - Jul 1, 22:50 UTCJul 2, 07:35 UTC8h 45m
2026-07-01 CPA037 - Jul 1, 16:40 UTCJul 1, 20:55 UTC4h 15m
2026-07-01 CPA037 - Jul 1, 15:55 UTCJul 1, 16:05 UTC10m
2026-07-01 CPA2074 - Jul 1, 11:20 UTCJul 1, 11:45 UTC25m
2026-07-01 CPA2074 - Jul 1, 08:20 UTCJul 1, 08:50 UTC30m
2026-07-01 CPA2075 - Jul 1, 03:30 UTCJul 1, 03:55 UTC25m
2026-07-01 CPA2075 - Jul 1, 00:50 UTCJul 1, 01:05 UTC15m
2026-06-30 CPA2083 - Jun 30, 11:50 UTCJun 30, 21:50 UTC10h 0m
2026-06-30 CPA2083 PDX → ANC Jun 30, 07:20 UTCJun 30, 10:30 UTC3h 10m
2026-06-30 CPA2084 - Jun 30, 03:05 UTCJun 30, 05:05 UTC2h 0m
2026-06-29 CPA2084 - Jun 29, 18:39 UTCJun 29, 23:05 UTC4h 25m
2026-06-29 CPA2084 - Jun 29, 08:54 UTCJun 29, 17:19 UTC8h 25m
2026-06-29 CPA2084 - Jun 29, 08:04 UTCJun 29, 08:19 UTC15m

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

Mode-S 780A3F frequently asked

What is Mode-S code 780A3F?
780A3F is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LJJ.
Where is Mode-S 780A3F registered?
Mode-S code 780A3F is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A3F broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A3F, octal 36005077, decimal 7,866,943.
What flights does 780A3F operate?
Mode-S 780A3F has broadcast 20 distinct callsigns, including CPA096, CPA097, CPA3298, CPA084, CPA3485.