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 Jul 26, 17:30 UTC
Flights observed
297
Distinct callsigns
20
Country
CN
Last broadcast
Jul 26, 17:30 UTC

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
CPA090 - 9 2026-07-18
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
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
2026-07-26 CPA3129 MEL → HKG Jul 26, 16:45 UTCJul 26, 17:30 UTC45m
2026-07-26 CPA3129 MEL → HKG Jul 26, 15:45 UTCJul 26, 15:55 UTC10m
2026-07-24 CPA3275 ANC → HKG Jul 24, 13:10 UTCJul 24, 23:30 UTC10h 20m
2026-07-24 CPA3275 ANC → HKG Jul 24, 04:45 UTCJul 24, 11:05 UTC6h 20m
2026-07-23 CPA3170 ANC → HKG Jul 23, 23:50 UTCJul 24, 01:45 UTC1h 55m
2026-07-23 CPA3170 ANC → HKG Jul 23, 13:45 UTCJul 23, 20:35 UTC6h 50m
2026-07-23 CPA3170 ANC → HKG Jul 23, 02:50 UTCJul 23, 12:10 UTC9h 20m
2026-07-22 CPA3244 DEL → HKG Jul 22, 21:35 UTCJul 22, 22:00 UTC25m
2026-07-22 CPA3244 DEL → HKG Jul 22, 17:05 UTCJul 22, 19:50 UTC2h 45m
2026-07-22 CPA041 HKG → DEL Jul 22, 11:20 UTCJul 22, 15:05 UTC3h 45m
2026-07-22 CPA015 NRT → TPE Jul 22, 02:40 UTCJul 22, 03:00 UTC20m
2026-07-22 CPA015 NRT → TPE Jul 22, 00:10 UTCJul 22, 01:25 UTC1h 15m
2026-07-21 CPA006 - Jul 21, 17:20 UTCJul 21, 21:10 UTC3h 50m
2026-07-21 CPA3291 ANC → HKG Jul 21, 03:25 UTCJul 21, 13:40 UTC10h 15m
2026-07-20 CPA3291 ANC → HKG Jul 20, 19:10 UTCJul 21, 02:05 UTC6h 54m
2026-07-20 CPA3290 ANC → DFW Jul 20, 14:40 UTCJul 20, 16:20 UTC1h 40m
2026-07-20 CPA3290 ANC → DFW Jul 20, 06:10 UTCJul 20, 11:45 UTC5h 35m
2026-07-19 CPA3290 ANC → DFW Jul 19, 19:00 UTCJul 20, 04:35 UTC9h 35m
2026-07-19 CPA091 ATL → HKG Jul 19, 05:40 UTCJul 19, 15:40 UTC10h 0m
2026-07-18 CPA091 ATL → HKG Jul 18, 22:10 UTCJul 19, 04:00 UTC5h 50m
2026-07-18 CPA090 - Jul 18, 16:35 UTCJul 18, 19:10 UTC2h 35m
2026-07-18 CPA090 ANC → LAX Jul 18, 08:40 UTCJul 18, 13:15 UTC4h 35m
2026-07-17 CPA090 HKG → ANC Jul 17, 21:34 UTCJul 18, 07:10 UTC9h 36m
2026-07-17 CPA015D TPE → HKG Jul 17, 17:20 UTCJul 17, 18:29 UTC1h 10m
2026-07-17 CPA015D NRT → TPE Jul 17, 11:55 UTCJul 17, 14:50 UTC2h 55m
2026-07-17 CPA006D HKG → NRT Jul 17, 05:20 UTCJul 17, 09:20 UTC4h 0m
2026-07-17 CPA048 HAN → HKG Jul 17, 00:55 UTCJul 17, 01:49 UTC55m
2026-07-16 - - Jul 16, 21:00 UTCJul 16, 21:10 UTC10m
2026-07-16 CPA3243 - Jul 16, 19:55 UTCJul 16, 20:09 UTC15m
2026-07-16 CPA2091 - Jul 16, 05:05 UTCJul 16, 14:45 UTC9h 40m
2026-07-15 CPA2091 DFW → ANC Jul 15, 21:35 UTCJul 16, 03:35 UTC6h 0m
2026-07-15 CPA2090 - Jul 15, 15:50 UTCJul 15, 18:30 UTC2h 40m
2026-07-15 CPA2090 - Jul 15, 08:20 UTCJul 15, 12:50 UTC4h 30m
2026-07-14 CPA2090 HKG → ANC Jul 14, 21:00 UTCJul 15, 06:50 UTC9h 49m
2026-07-14 CPA035 - Jul 14, 13:55 UTCJul 14, 16:45 UTC2h 50m
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

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 Jul 26, 17:30 UTC.
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, CPA090, CPA3298.