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
- Flights observed
- 302
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 4h ago
Last known position
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 |
| CPA841 | - | 11 | 2026-07-12 |
| CPA652 | - | 10 | 2026-06-30 |
| CPA372 | - | 10 | 2026-06-20 |
| CPA135 | - | 10 | 2026-07-16 |
| CPA315 | - | 9 | 2026-06-19 |
| 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 |
| 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 |
| CPA184 | - | 6 | 2026-07-02 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CPA275 | - | Jul 17, 17:09 UTC | Jul 17, 17:35 UTC | 25m |
| 2026-07-17 | CPA704 | - | Jul 17, 14:39 UTC | Jul 17, 14:55 UTC | 15m |
| 2026-07-17 | CPA704 | - | Jul 17, 12:30 UTC | Jul 17, 12:45 UTC | 15m |
| 2026-07-17 | CPA701 | - | Jul 17, 10:40 UTC | Jul 17, 11:00 UTC | 20m |
| 2026-07-17 | CPA701 | - | Jul 17, 08:45 UTC | Jul 17, 08:59 UTC | 15m |
| 2026-07-17 | CPA134 | - | Jul 17, 06:35 UTC | Jul 17, 06:50 UTC | 15m |
| 2026-07-16 | CPA134 | - | Jul 16, 22:19 UTC | Jul 17, 05:35 UTC | 7h 15m |
| 2026-07-16 | CPA135 | HKG → MEL | Jul 16, 11:25 UTC | Jul 16, 20:19 UTC | 8h 55m |
| 2026-07-16 | CPA134 | - | Jul 16, 06:20 UTC | Jul 16, 06:40 UTC | 20m |
| 2026-07-15 | CPA134 | - | Jul 15, 22:15 UTC | Jul 16, 05:45 UTC | 7h 30m |
| 2026-07-15 | CPA135 | HKG → MEL | Jul 15, 11:35 UTC | Jul 15, 20:25 UTC | 8h 50m |
| 2026-07-13 | CPA110 | SYD → HKG | Jul 13, 22:10 UTC | Jul 14, 06:50 UTC | 8h 40m |
| 2026-07-13 | CPA111 | - | Jul 13, 11:50 UTC | Jul 13, 20:25 UTC | 8h 35m |
| 2026-07-12 | CPA841 | - | Jul 12, 17:05 UTC | Jul 13, 08:15 UTC | 15h 10m |
| 2026-07-12 | CPA844 | - | Jul 12, 00:01 UTC | Jul 12, 15:01 UTC | 15h 0m |
| 2026-07-11 | CPA844 | - | Jul 11, 23:10 UTC | Jul 11, 23:25 UTC | 15m |
| 2026-07-11 | CPA805D | YYZ → HKG | Jul 11, 05:01 UTC | Jul 11, 20:30 UTC | 15h 30m |
| 2026-07-10 | CPA828 | HKG → YYZ | Jul 10, 09:35 UTC | Jul 11, 00:30 UTC | 14h 55m |
| 2026-07-10 | CPA134 | - | Jul 10, 06:00 UTC | Jul 10, 06:25 UTC | 25m |
| 2026-07-09 | CPA134 | - | Jul 9, 21:40 UTC | Jul 10, 05:15 UTC | 7h 35m |
| 2026-07-09 | CPA135 | - | Jul 9, 12:25 UTC | Jul 9, 19:35 UTC | 7h 10m |
| 2026-07-09 | CPA135 | - | Jul 9, 11:25 UTC | Jul 9, 11:40 UTC | 15m |
| 2026-07-08 | CPA853 | SEA → HKG | Jul 8, 19:45 UTC | Jul 9, 09:15 UTC | 13h 30m |
| 2026-07-08 | CPA852 | HKG → SEA | Jul 8, 05:40 UTC | Jul 8, 17:10 UTC | 11h 30m |
| 2026-07-07 | CPA748 | JNB → HKG | Jul 7, 21:45 UTC | Jul 7, 22:00 UTC | 15m |
| 2026-07-07 | CPA748 | JNB → HKG | Jul 7, 09:50 UTC | Jul 7, 20:00 UTC | 10h 10m |
| 2026-07-06 | CPA749 | - | Jul 6, 19:25 UTC | Jul 7, 06:05 UTC | 10h 40m |
| 2026-07-06 | CPA749 | - | Jul 6, 17:35 UTC | Jul 6, 17:50 UTC | 15m |
| 2026-07-06 | CPA704 | BKK → HKG | Jul 6, 14:35 UTC | Jul 6, 15:00 UTC | 25m |
| 2026-07-06 | CPA704 | BKK → HKG | Jul 6, 12:30 UTC | Jul 6, 13:25 UTC | 55m |
| 2026-07-06 | CPA701 | - | Jul 6, 10:00 UTC | Jul 6, 10:55 UTC | 55m |
| 2026-07-06 | CPA701 | - | Jul 6, 08:30 UTC | Jul 6, 08:50 UTC | 20m |
| 2026-07-05 | CPA134 | - | Jul 5, 22:10 UTC | Jul 6, 06:50 UTC | 8h 40m |
| 2026-07-05 | CPA135 | HKG → MEL | Jul 5, 11:30 UTC | Jul 5, 20:00 UTC | 8h 30m |
| 2026-07-04 | CPA853 | SEA → HKG | Jul 4, 19:40 UTC | Jul 5, 08:20 UTC | 12h 40m |
| 2026-07-04 | CPA852 | - | Jul 4, 06:35 UTC | Jul 4, 17:05 UTC | 10h 30m |
| 2026-07-04 | CPA852 | - | Jul 4, 05:50 UTC | Jul 4, 06:05 UTC | 15m |
| 2026-07-03 | CPA216 | MAN → HKG | Jul 3, 21:40 UTC | Jul 3, 22:05 UTC | 25m |
| 2026-07-03 | CPA216 | MAN → HKG | Jul 3, 10:25 UTC | Jul 3, 14:45 UTC | 4h 20m |
| 2026-07-02 | CPA259 | HKG → MAN | Jul 2, 22:30 UTC | Jul 3, 07:05 UTC | 8h 35m |
| 2026-07-02 | CPA259 | HKG → MAN | Jul 2, 17:25 UTC | Jul 2, 17:40 UTC | 15m |
| 2026-07-02 | CPA479 | - | Jul 2, 14:25 UTC | Jul 2, 14:45 UTC | 20m |
| 2026-07-02 | CPA479 | - | Jul 2, 13:25 UTC | Jul 2, 13:50 UTC | 25m |
| 2026-07-02 | CPA402 | - | Jul 2, 10:30 UTC | Jul 2, 11:50 UTC | 1h 20m |
| 2026-07-02 | CPA184 | - | Jul 2, 07:30 UTC | Jul 2, 08:00 UTC | 30m |
| 2026-07-02 | CPA184 | - | Jul 2, 00:30 UTC | Jul 2, 05:45 UTC | 5h 15m |
| 2026-07-01 | CPA143 | HKG → PER | Jul 1, 15:25 UTC | Jul 1, 22:30 UTC | 7h 5m |
| 2026-07-01 | CPA198 | - | Jul 1, 01:50 UTC | Jul 1, 12:35 UTC | 10h 45m |
| 2026-06-30 | CPA113 | HKG → AKL | Jun 30, 13:55 UTC | Jul 1, 00:00 UTC | 10h 5m |
| 2026-06-30 | CPA652 | - | Jun 30, 08:05 UTC | Jun 30, 08:35 UTC | 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 .