Apparatus

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sensors Mode-S transponder

780A28

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LJF · BOEING 747-8

Hex
780A28
Octal
36005050
Decimal
7,866,920
Country
CN
Tail
B-LJF
Type
B748
No current signal · last broadcast 1d ago
Flights observed
123
Distinct callsigns
20
Country
CN
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 780A28.

Country allocation

The ICAO 24-bit address 780A28 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
CPA087 - 9 2026-06-28
CPA097 - 8 2026-07-09
CPA096 Cathay Pacific 7 2026-07-08
CPA084 - 7 2026-07-04
CPA2090 Cathay Pacific 6 2026-06-17
CPA086 - 6 2026-06-27
CPA2091 Cathay Pacific 5 2026-06-18
CPA083 - 5 2026-07-05
CPA072 - 5 2026-07-17
CPA007 - 5 2026-07-19
CPA028 Cathay Pacific 4 2026-06-09
CPA3290 - 3 2026-07-13
CPA3280 - 3 2026-07-02
CPA2095 Cathay Pacific 3 2026-06-13
CPA2068 Cathay Pacific 3 2026-06-20
CPA039 - 3 2026-07-10
CPA008 - 3 2026-07-20
CPA3294 - 2 2026-07-15
CPA3291 - 2 2026-07-14
CPA3281 - 2 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-20 CPA3251 PVG → HKG Jul 20, 22:55 UTCJul 21, 00:10 UTC1h 14m
2026-07-20 CPA054 - Jul 20, 13:25 UTCJul 20, 13:40 UTC15m
2026-07-20 CPA008 - Jul 20, 08:10 UTCJul 20, 08:40 UTC30m
2026-07-19 CPA008 - Jul 19, 21:20 UTCJul 20, 01:15 UTC3h 55m
2026-07-19 CPA008 - Jul 19, 18:30 UTCJul 19, 19:20 UTC50m
2026-07-19 CPA007 - Jul 19, 05:50 UTCJul 19, 11:20 UTC5h 30m
2026-07-19 CPA007 - Jul 19, 04:20 UTCJul 19, 04:30 UTC10m
2026-07-19 CPA007 - Jul 19, 01:35 UTCJul 19, 01:55 UTC20m
2026-07-18 CPA007 - Jul 18, 23:05 UTCJul 19, 00:20 UTC1h 15m
2026-07-18 CPA007 - Jul 18, 21:10 UTCJul 18, 21:25 UTC15m
2026-07-18 CPA3277 ANC → HKG Jul 18, 04:35 UTCJul 18, 14:25 UTC9h 50m
2026-07-17 CPA3277 ANC → HKG Jul 17, 19:30 UTCJul 18, 03:25 UTC7h 56m
2026-07-17 CPA072 - Jul 17, 08:54 UTCJul 17, 16:04 UTC7h 10m
2026-07-16 CPA072 - Jul 16, 21:40 UTCJul 17, 07:20 UTC9h 40m
2026-07-16 CPA3295 JFK → HKG Jul 16, 03:00 UTCJul 16, 18:15 UTC15h 15m
2026-07-15 CPA3294 - Jul 15, 18:05 UTCJul 15, 23:55 UTC5h 50m
2026-07-15 CPA3294 HKG → ANC Jul 15, 06:55 UTCJul 15, 16:30 UTC9h 35m
2026-07-14 CPA3261 - Jul 14, 19:25 UTCJul 14, 19:45 UTC20m
2026-07-14 CPA3260 - Jul 14, 13:45 UTCJul 14, 14:00 UTC15m
2026-07-14 CPA3291 - Jul 14, 00:50 UTCJul 14, 10:55 UTC10h 5m
2026-07-13 CPA3291 ATL → ANC Jul 13, 16:25 UTCJul 13, 23:05 UTC6h 40m
2026-07-13 CPA3290 DFW → ATL Jul 13, 12:05 UTCJul 13, 13:40 UTC1h 35m
2026-07-13 CPA3290 ANC → DFW Jul 13, 03:10 UTCJul 13, 08:55 UTC5h 45m
2026-07-12 CPA3290 HKG → ANC Jul 12, 16:10 UTCJul 13, 01:35 UTC9h 25m
2026-07-12 CPA2083 - Jul 12, 02:01 UTCJul 12, 11:45 UTC9h 45m
2026-07-11 CPA2083 - Jul 11, 18:40 UTCJul 12, 00:15 UTC5h 35m
2026-07-11 CPA2082 ANC → ORD Jul 11, 10:20 UTCJul 11, 15:55 UTC5h 35m
2026-07-10 CPA2082 HKG → ANC Jul 10, 23:15 UTCJul 11, 09:00 UTC9h 45m
2026-07-10 CPA3132 - Jul 10, 16:40 UTCJul 10, 20:45 UTC4h 5m
2026-07-10 CPA3132 - Jul 10, 15:15 UTCJul 10, 15:25 UTC10m
2026-07-10 CPA039 - Jul 10, 11:55 UTCJul 10, 12:20 UTC25m
2026-07-10 CPA039 - Jul 10, 08:45 UTCJul 10, 10:45 UTC2h 0m
2026-07-10 CPA039 - Jul 10, 06:55 UTCJul 10, 07:10 UTC15m
2026-07-09 CPA097 ANC → HKG Jul 9, 11:15 UTCJul 9, 21:15 UTC10h 0m
2026-07-08 CPA097 - Jul 8, 22:50 UTCJul 9, 09:50 UTC11h 0m
2026-07-08 CPA096 ANC → HKG Jul 8, 14:00 UTCJul 8, 19:45 UTC5h 45m
2026-07-08 CPA096 ANC → HKG Jul 8, 02:50 UTCJul 8, 12:25 UTC9h 35m
2026-07-07 CPA097 ANC → HKG Jul 7, 04:45 UTCJul 7, 14:45 UTC10h 0m
2026-07-06 CPA097 - Jul 6, 21:35 UTCJul 7, 03:10 UTC5h 35m
2026-07-06 CPA097 - Jul 6, 17:15 UTCJul 6, 17:25 UTC10m
2026-07-06 CPA096 ANC → HKG Jul 6, 14:45 UTCJul 6, 15:10 UTC25m
2026-07-06 CPA096 ANC → HKG Jul 6, 08:00 UTCJul 6, 14:05 UTC6h 5m
2026-07-05 CPA096 ANC → HKG Jul 5, 21:10 UTCJul 6, 06:40 UTC9h 30m
2026-07-05 CPA083 - Jul 5, 17:25 UTCJul 5, 17:45 UTC20m
2026-07-05 CPA083 - Jul 5, 08:05 UTCJul 5, 16:55 UTC8h 50m
2026-07-05 CPA083 PDX → ANC Jul 5, 03:30 UTCJul 5, 06:50 UTC3h 20m
2026-07-04 CPA084 - Jul 4, 22:45 UTCJul 5, 00:35 UTC1h 50m
2026-07-04 CPA084 - Jul 4, 15:25 UTCJul 4, 20:00 UTC4h 35m
2026-07-04 CPA084 - Jul 4, 05:35 UTCJul 4, 14:10 UTC8h 35m
2026-07-04 CPA084 - Jul 4, 04:50 UTCJul 4, 05:05 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-LJF page for operator, model, and routing details .

Mode-S 780A28 frequently asked

What is Mode-S code 780A28?
780A28 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LJF.
Where is Mode-S 780A28 registered?
Mode-S code 780A28 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780A28 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780A28, octal 36005050, decimal 7,866,920.
What flights does 780A28 operate?
Mode-S 780A28 has broadcast 20 distinct callsigns, including CPA087, CPA097, CPA096, CPA084, CPA2090.