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
Broadcasting now · callsign CPA2068 · 35,000 ft
Flights observed
286
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 21:25 UTC

Current position

780A3F is currently broadcasting. Map zoomed to live position.

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
CPA084 - 12 2026-07-19
CPA3174 - 10 2026-07-15
CPA3298 Cathay Pacific 9 2026-05-05
CPA3283 - 9 2026-07-16
CPA083 Cathay Pacific 9 2026-07-19
CPA037 Cathay Pacific 8 2026-07-26
CPA3485 Cathay Pacific 7 2026-06-15
CPA3035 Cathay Pacific 7 2026-06-23
CPA2084 Cathay Pacific 7 2026-07-21
CPA085 Cathay Pacific 7 2026-05-06
CPA3408 Cathay Pacific 6 2026-06-06
CPA3194 Cathay Pacific 6 2026-06-14
CPA005 - 6 2026-05-26
CPA2095 Cathay Pacific 5 2026-05-29
CPA2093 Cathay Pacific 5 2026-06-11
CPA2075 Cathay Pacific 5 2026-07-22
CPA2074 Cathay Pacific 5 2026-07-22
CPA094 - 5 2026-06-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 CPA037 MXP → HKG Jul 26, 17:10 UTCJul 26, 21:25 UTC4h 15m
2026-07-26 CPA037 MXP → HKG Jul 26, 16:30 UTCJul 26, 16:35 UTC5m
2026-07-26 CPA064 FRA → AMS Jul 26, 07:55 UTCJul 26, 08:10 UTC15m
2026-07-25 CPA064 FRA → AMS Jul 25, 20:50 UTCJul 26, 00:45 UTC3h 55m
2026-07-25 CPA064 FRA → AMS Jul 25, 17:15 UTCJul 25, 18:05 UTC50m
2026-07-25 CPA061 BOM → FRA Jul 25, 05:55 UTCJul 25, 14:25 UTC8h 30m
2026-07-25 CPA061 BOM → FRA Jul 25, 04:25 UTCJul 25, 04:40 UTC15m
2026-07-24 CPA061 BOM → FRA Jul 24, 23:25 UTCJul 25, 02:25 UTC3h 0m
2026-07-24 CPA061 BOM → FRA Jul 24, 21:35 UTCJul 24, 21:50 UTC15m
2026-07-23 CPA3509 ANC → HKG Jul 23, 20:10 UTCJul 24, 11:15 UTC15h 5m
2026-07-23 CPA3509 ANC → HKG Jul 23, 15:00 UTCJul 23, 16:05 UTC1h 5m
2026-07-23 CPA3294 ANC → JFK Jul 23, 06:05 UTCJul 23, 12:00 UTC5h 55m
2026-07-22 CPA3294 ANC → JFK Jul 22, 19:10 UTCJul 23, 04:25 UTC9h 15m
2026-07-22 CPA2074 SIN → PEN Jul 22, 13:05 UTCJul 22, 13:25 UTC20m
2026-07-22 CPA2075 HKG → SIN Jul 22, 03:00 UTCJul 22, 03:10 UTC10m
2026-07-21 CPA2083 ANC → HKG Jul 21, 13:40 UTCJul 22, 00:05 UTC10h 25m
2026-07-21 CPA2083 ANC → HKG Jul 21, 09:15 UTCJul 21, 12:15 UTC3h 0m
2026-07-21 CPA2084 ANC → HKG Jul 21, 03:40 UTCJul 21, 05:25 UTC1h 45m
2026-07-20 CPA2084 ANC → HKG Jul 20, 19:00 UTCJul 21, 00:00 UTC4h 59m
2026-07-20 CPA2084 ANC → HKG Jul 20, 08:10 UTCJul 20, 17:35 UTC9h 25m
2026-07-19 CPA083 ANC → HKG Jul 19, 19:25 UTCJul 20, 05:35 UTC10h 10m
2026-07-19 CPA083 ANC → HKG Jul 19, 15:00 UTCJul 19, 18:10 UTC3h 10m
2026-07-19 CPA084 - Jul 19, 11:10 UTCJul 19, 12:55 UTC1h 45m
2026-07-19 CPA084 - Jul 19, 03:05 UTCJul 19, 07:40 UTC4h 35m
2026-07-18 CPA084 HKG → ANC Jul 18, 16:20 UTCJul 19, 01:45 UTC9h 25m
2026-07-18 CPA056 HKG → PVG Jul 18, 01:30 UTCJul 18, 10:10 UTC8h 41m
2026-07-16 CPA3283 ANC → HKG Jul 16, 13:15 UTCJul 16, 23:20 UTC10h 5m
2026-07-16 CPA3283 ATL → ANC Jul 16, 03:55 UTCJul 16, 10:35 UTC6h 40m
2026-07-15 CPA3174 - Jul 15, 23:40 UTCJul 16, 01:00 UTC1h 20m
2026-07-15 CPA3174 - Jul 15, 14:25 UTCJul 15, 21:45 UTC7h 20m
2026-07-15 CPA3174 HKG → ANC Jul 15, 03:15 UTCJul 15, 12:55 UTC9h 40m
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

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?
Yes. Mode-S 780A3F is currently airborne.
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, CPA084, CPA3174, CPA3298.