Apparatus

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sensors Mode-S transponder

780231

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LJA · BOEING 747-8

Hex
780231
Octal
36001061
Decimal
7,864,881
Country
CN
Tail
B-LJA
Type
B748
No current signal · last broadcast 42m ago
Flights observed
263
Distinct callsigns
20
Country
CN
Last broadcast
42m ago

Last known position

Most recent position reported by Mode-S 780231.

Country allocation

The ICAO 24-bit address 780231 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
CPA097 - 15 2026-06-16
CPA096 Cathay Pacific 12 2026-06-15
CPA037 - 10 2026-07-12
CPA3298 - 8 2026-06-11
CPA3283 Cathay Pacific 8 2026-07-05
CPA3174 - 7 2026-07-02
CPA2084 - 7 2026-06-23
CPA098 - 7 2026-04-13
CPA085 - 7 2026-06-12
CPA3272 - 6 2026-07-04
CPA2093 - 6 2026-07-09
CPA2068 Cathay Pacific 6 2026-04-18
CPA090 - 6 2026-07-09
CPA087 Cathay Pacific 6 2026-05-30
CPA086 Cathay Pacific 6 2026-05-30
CPA3194 - 5 2026-06-28
CPA3069 Cathay Pacific 5 2026-04-14
CPA2098 - 5 2026-07-06
CPA2049 - 5 2026-07-03
CPA3485 - 4 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 CPA035 - Jul 14, 13:55 UTCJul 14, 14:15 UTC20m
2026-07-14 CPA035 - Jul 14, 09:35 UTCJul 14, 10:55 UTC1h 20m
2026-07-14 CPA036 HKG → KIX Jul 14, 04:15 UTCJul 14, 07:25 UTC3h 10m
2026-07-13 CPA014 MXP → HKG Jul 13, 11:15 UTCJul 13, 22:00 UTC10h 45m
2026-07-13 CPA014 FRA → MXP Jul 13, 07:55 UTCJul 13, 08:50 UTC55m
2026-07-12 CPA037 - Jul 12, 21:00 UTCJul 13, 05:20 UTC8h 20m
2026-07-12 CPA037 - Jul 12, 15:50 UTCJul 12, 18:55 UTC3h 5m
2026-07-12 CPA037 - Jul 12, 14:01 UTCJul 12, 14:15 UTC15m
2026-07-12 CPA064 - Jul 12, 07:01 UTCJul 12, 07:31 UTC30m
2026-07-11 CPA064 - Jul 11, 20:20 UTCJul 11, 22:55 UTC2h 35m
2026-07-11 CPA064 FRA → AMS Jul 11, 17:00 UTCJul 11, 17:45 UTC45m
2026-07-11 CPA061 - Jul 11, 06:10 UTCJul 11, 14:45 UTC8h 35m
2026-07-11 CPA061 - Jul 11, 04:40 UTCJul 11, 04:50 UTC10m
2026-07-10 CPA061 - Jul 10, 21:50 UTCJul 11, 02:45 UTC4h 55m
2026-07-09 CPA2093 YYZ → HKG Jul 9, 18:40 UTCJul 10, 09:40 UTC15h 0m
2026-07-09 CPA2093 - Jul 9, 15:00 UTCJul 9, 16:00 UTC1h 0m
2026-07-09 CPA090 - Jul 9, 06:50 UTCJul 9, 12:10 UTC5h 20m
2026-07-08 CPA090 HKG → ANC Jul 8, 19:45 UTCJul 9, 05:30 UTC9h 45m
2026-07-08 CPA2074 - Jul 8, 15:50 UTCJul 8, 16:05 UTC15m
2026-07-08 CPA2074 - Jul 8, 12:40 UTCJul 8, 13:10 UTC30m
2026-07-08 CPA2075 - Jul 8, 08:25 UTCJul 8, 09:00 UTC35m
2026-07-08 CPA2075 - Jul 8, 05:55 UTCJul 8, 06:05 UTC10m
2026-07-08 CPA035D - Jul 8, 01:15 UTCJul 8, 02:40 UTC1h 25m
2026-07-07 CPA035D - Jul 7, 23:45 UTCJul 8, 00:20 UTC35m
2026-07-07 CPA035 KIX → ICN Jul 7, 19:20 UTCJul 7, 20:40 UTC1h 20m
2026-07-07 CPA036 HKG → KIX Jul 7, 14:30 UTCJul 7, 17:40 UTC3h 10m
2026-07-06 CPA2097 ANC → HKG Jul 6, 20:50 UTCJul 7, 06:55 UTC10h 5m
2026-07-06 CPA2097 ORD → ANC Jul 6, 13:35 UTCJul 6, 19:05 UTC5h 30m
2026-07-06 CPA2098 ANC → ORD Jul 6, 05:45 UTCJul 6, 11:00 UTC5h 15m
2026-07-05 CPA2098 HKG → ANC Jul 5, 18:55 UTCJul 6, 04:20 UTC9h 25m
2026-07-05 CPA3283 ANC → HKG Jul 5, 05:10 UTCJul 5, 15:05 UTC9h 55m
2026-07-04 CPA3283 ANC → HKG Jul 4, 20:20 UTCJul 5, 02:55 UTC6h 35m
2026-07-04 CPA3272 MPB → ATL Jul 4, 16:20 UTCJul 4, 17:40 UTC1h 20m
2026-07-04 CPA3272 - Jul 4, 06:50 UTCJul 4, 14:15 UTC7h 25m
2026-07-03 CPA3272 - Jul 3, 20:10 UTCJul 4, 05:30 UTC9h 20m
2026-07-03 CPA2048 - Jul 3, 15:40 UTCJul 3, 16:40 UTC1h 0m
2026-07-03 CPA2048 - Jul 3, 14:45 UTCJul 3, 15:05 UTC20m
2026-07-03 CPA2049 - Jul 3, 11:15 UTCJul 3, 11:45 UTC30m
2026-07-03 CPA2049 - Jul 3, 10:15 UTCJul 3, 10:30 UTC15m
2026-07-02 CPA3283 ANC → HKG Jul 2, 13:40 UTCJul 2, 23:55 UTC10h 15m
2026-07-02 CPA3283 ANC → HKG Jul 2, 05:35 UTCJul 2, 12:05 UTC6h 30m
2026-07-02 CPA3174 - Jul 2, 01:15 UTCJul 2, 02:40 UTC1h 25m
2026-07-01 CPA3174 - Jul 1, 15:00 UTCJul 1, 22:45 UTC7h 45m
2026-07-01 CPA3174 - Jul 1, 05:15 UTCJul 1, 13:45 UTC8h 30m
2026-07-01 CPA3174 - Jul 1, 04:25 UTCJul 1, 04:40 UTC15m
2026-06-29 CPA3485 YYZ → HKG Jun 29, 06:29 UTCJun 29, 21:19 UTC14h 50m
2026-06-29 CPA3485 - Jun 29, 02:54 UTCJun 29, 04:00 UTC1h 5m
2026-06-28 CPA3194 - Jun 28, 17:00 UTCJun 28, 23:09 UTC6h 10m
2026-06-28 CPA3194 - Jun 28, 06:20 UTCJun 28, 14:39 UTC8h 20m
2026-06-28 CPA3194 - Jun 28, 05:29 UTCJun 28, 05:45 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-LJA page for operator, model, and routing details .

Mode-S 780231 frequently asked

What is Mode-S code 780231?
780231 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LJA.
Where is Mode-S 780231 registered?
Mode-S code 780231 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780231 broadcasting right now?
No active broadcast right now. Last signal was 42m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780231, octal 36001061, decimal 7,864,881.
What flights does 780231 operate?
Mode-S 780231 has broadcast 20 distinct callsigns, including CPA097, CPA096, CPA037, CPA3298, CPA3283.