Apparatus

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sensors Mode-S transponder

780AB9

ICAO 24-bit transponder address · allocated to China

Currently assigned to B-LRN · AIRBUS A-350-900

Hex
780AB9
Octal
36005271
Decimal
7,867,065
Country
CN
Tail
B-LRN
Type
A359
No current signal · last broadcast Jul 25, 21:15 UTC
Flights observed
329
Distinct callsigns
20
Country
CN
Last broadcast
Jul 25, 21:15 UTC

Last known position

Most recent position reported by Mode-S 780AB9.

Country allocation

The ICAO 24-bit address 780AB9 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
CPA844 - 15 2026-07-12
CPA134 - 14 2026-07-17
CPA372 Cathay Pacific 12 2026-07-24
CPA841 - 11 2026-07-12
CPA315 Cathay Pacific 11 2026-07-24
CPA652 - 10 2026-06-30
CPA135 - 10 2026-07-16
CPA691 - 8 2026-06-30
CPA636 - 8 2026-06-29
CPA852 - 7 2026-07-08
CPA527 - 7 2026-06-26
CPA256 - 7 2026-06-21
CPA198 - 7 2026-07-01
CPA170 Cathay Pacific 7 2026-07-22
CPA113 - 7 2026-06-30
CPA853 - 6 2026-07-08
CPA734 Cathay Pacific 6 2026-06-12
CPA704 - 6 2026-07-17
CPA526 - 6 2026-06-26
CPA239 Cathay Pacific 6 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 CPA111 HKG → SYD Jul 25, 13:30 UTCJul 25, 21:05 UTC7h 35m
2026-07-25 CPA111 HKG → SYD Jul 25, 12:25 UTCJul 25, 12:40 UTC15m
2026-07-25 CPA758 SIN → HKG Jul 25, 10:25 UTCJul 25, 10:40 UTC15m
2026-07-25 CPA758 SIN → HKG Jul 25, 06:30 UTCJul 25, 06:55 UTC25m
2026-07-25 CPA759 HKG → SIN Jul 25, 04:00 UTCJul 25, 04:30 UTC30m
2026-07-25 CPA759 HKG → SIN Jul 25, 01:25 UTCJul 25, 01:35 UTC10m
2026-07-24 CPA372 MAD → HKG Jul 24, 22:10 UTCJul 24, 22:40 UTC30m
2026-07-24 CPA372 MAD → HKG Jul 24, 10:45 UTCJul 24, 15:20 UTC4h 35m
2026-07-24 CPA315 HKG → MAD Jul 24, 01:20 UTCJul 24, 07:00 UTC5h 40m
2026-07-23 CPA315 HKG → MAD Jul 23, 17:05 UTCJul 23, 17:25 UTC20m
2026-07-23 CPA479 TPE → HKG Jul 23, 13:40 UTCJul 23, 15:05 UTC1h 25m
2026-07-23 CPA402 HKG → TPE Jul 23, 11:00 UTCJul 23, 12:20 UTC1h 20m
2026-07-23 CPA368 HKG → PVG Jul 23, 01:35 UTCJul 23, 07:35 UTC6h 0m
2026-07-22 CPA170 PER → HKG Jul 22, 16:15 UTCJul 22, 23:45 UTC7h 30m
2026-07-22 CPA171 HKG → PER Jul 22, 13:45 UTCJul 22, 14:20 UTC35m
2026-07-21 CPA300 MUC → HKG Jul 21, 12:15 UTCJul 21, 22:30 UTC10h 15m
2026-07-20 CPA301 HKG → MUC Jul 20, 17:25 UTCJul 21, 06:05 UTC12h 40m
2026-07-20 CPA539 NGO → HKG Jul 20, 08:25 UTCJul 20, 11:40 UTC3h 15m
2026-07-20 CPA536 HKG → NGO Jul 20, 03:35 UTCJul 20, 06:55 UTC3h 20m
2026-07-19 CPA170 - Jul 19, 23:15 UTCJul 19, 23:40 UTC25m
2026-07-19 CPA170 - Jul 19, 16:25 UTCJul 19, 21:35 UTC5h 10m
2026-07-19 CPA171 HKG → PER Jul 19, 07:10 UTCJul 19, 14:20 UTC7h 10m
2026-07-19 CPA461 TPE → HKG Jul 19, 04:20 UTCJul 19, 05:35 UTC1h 15m
2026-07-19 CPA466 HKG → TPE Jul 19, 01:25 UTCJul 19, 03:00 UTC1h 35m
2026-07-18 CPA294 - Jul 18, 22:45 UTCJul 18, 23:35 UTC50m
2026-07-18 CPA294 - Jul 18, 12:00 UTCJul 18, 15:55 UTC3h 55m
2026-07-18 CPA275 - Jul 18, 01:50 UTCJul 18, 06:40 UTC4h 51m
2026-07-17 CPA275 - Jul 17, 17:09 UTCJul 17, 17:35 UTC25m
2026-07-17 CPA704 - Jul 17, 14:39 UTCJul 17, 14:55 UTC15m
2026-07-17 CPA704 - Jul 17, 12:30 UTCJul 17, 12:45 UTC15m
2026-07-17 CPA701 - Jul 17, 10:40 UTCJul 17, 11:00 UTC20m
2026-07-17 CPA701 - Jul 17, 08:45 UTCJul 17, 08:59 UTC15m
2026-07-17 CPA134 - Jul 17, 06:35 UTCJul 17, 06:50 UTC15m
2026-07-16 CPA134 - Jul 16, 22:19 UTCJul 17, 05:35 UTC7h 15m
2026-07-16 CPA135 HKG → MEL Jul 16, 11:25 UTCJul 16, 20:19 UTC8h 55m
2026-07-16 CPA134 - Jul 16, 06:20 UTCJul 16, 06:40 UTC20m
2026-07-15 CPA134 - Jul 15, 22:15 UTCJul 16, 05:45 UTC7h 30m
2026-07-15 CPA135 HKG → MEL Jul 15, 11:35 UTCJul 15, 20:25 UTC8h 50m
2026-07-13 CPA110 SYD → HKG Jul 13, 22:10 UTCJul 14, 06:50 UTC8h 40m
2026-07-13 CPA111 - Jul 13, 11:50 UTCJul 13, 20:25 UTC8h 35m
2026-07-12 CPA841 - Jul 12, 17:05 UTCJul 13, 08:15 UTC15h 10m
2026-07-12 CPA844 - Jul 12, 00:01 UTCJul 12, 15:01 UTC15h 0m
2026-07-11 CPA844 - Jul 11, 23:10 UTCJul 11, 23:25 UTC15m
2026-07-11 CPA805D YYZ → HKG Jul 11, 05:01 UTCJul 11, 20:30 UTC15h 30m
2026-07-10 CPA828 HKG → YYZ Jul 10, 09:35 UTCJul 11, 00:30 UTC14h 55m
2026-07-10 CPA134 - Jul 10, 06:00 UTCJul 10, 06:25 UTC25m
2026-07-09 CPA134 - Jul 9, 21:40 UTCJul 10, 05:15 UTC7h 35m
2026-07-09 CPA135 - Jul 9, 12:25 UTCJul 9, 19:35 UTC7h 10m
2026-07-09 CPA135 - Jul 9, 11:25 UTCJul 9, 11:40 UTC15m
2026-07-08 CPA853 SEA → HKG Jul 8, 19:45 UTCJul 9, 09:15 UTC13h 30m

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

Mode-S 780AB9 frequently asked

What is Mode-S code 780AB9?
780AB9 is an ICAO 24-bit transponder address. Allocated to China. Assigned to B-LRN.
Where is Mode-S 780AB9 registered?
Mode-S code 780AB9 is allocated to China (CN). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 780AB9 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 780AB9, octal 36005271, decimal 7,867,065.
What flights does 780AB9 operate?
Mode-S 780AB9 has broadcast 20 distinct callsigns, including CPA844, CPA134, CPA372, CPA841, CPA315.