sensors Mode-S transponder
781B3A
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-322N · AIRBUS A-320neo
- Hex
- 781B3A
- Octal
- 36015472
- Decimal
- 7,871,290
- Country
- CN
- Tail
- B-322N
- Type
- A20N
- Flights observed
- 28
- Distinct callsigns
- 14
- Country
- CN
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 781B3A 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CBJ420 | - | 7 | 2026-04-22 |
| CBJ419 | - | 7 | 2026-04-22 |
| CBJ5765 | - | 2 | 2026-04-22 |
| CBJ5649 | - | 2 | 2026-05-29 |
| CBJ619 | - | 1 | 2026-05-30 |
| CBJ5686 | - | 1 | 2026-05-09 |
| CBJ5685 | - | 1 | 2026-05-08 |
| CBJ5220 | - | 1 | 2026-05-09 |
| CBJ5219 | - | 1 | 2026-05-09 |
| CBJ5218 | - | 1 | 2026-04-30 |
| CBJ5217 | - | 1 | 2026-04-29 |
| CBJ5181 | - | 1 | 2026-05-21 |
| CBJ5131 | - | 1 | 2026-05-18 |
| CBJ5069 | - | 1 | 2026-04-25 |
Recent flights last 28
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | CBJ619 | - | May 30, 04:45 UTC | May 30, 07:25 UTC | 2h 40m |
| 2026-05-29 | CBJ5649 | - | May 29, 01:40 UTC | May 29, 04:10 UTC | 2h 30m |
| 2026-05-21 | CBJ5181 | - | May 21, 12:20 UTC | May 22, 01:45 UTC | 13h 25m |
| 2026-05-18 | CBJ5131 | - | May 18, 04:20 UTC | May 18, 04:30 UTC | 10m |
| 2026-05-17 | CBJ5649 | - | May 17, 03:40 UTC | May 17, 03:55 UTC | 15m |
| 2026-05-09 | CBJ5220 | - | May 9, 15:45 UTC | May 9, 16:00 UTC | 15m |
| 2026-05-09 | CBJ5219 | - | May 9, 07:35 UTC | May 9, 08:00 UTC | 25m |
| 2026-05-09 | CBJ5686 | - | May 9, 04:55 UTC | May 9, 05:05 UTC | 10m |
| 2026-05-08 | CBJ5685 | - | May 8, 23:55 UTC | May 9, 00:15 UTC | 20m |
| 2026-04-30 | CBJ5218 | - | Apr 30, 08:00 UTC | Apr 30, 08:15 UTC | 15m |
| 2026-04-29 | CBJ5217 | - | Apr 29, 23:45 UTC | Apr 29, 23:55 UTC | 10m |
| 2026-04-25 | CBJ5069 | - | Apr 25, 09:30 UTC | Apr 25, 13:25 UTC | 3h 55m |
| 2026-04-22 | CBJ5765 | - | Apr 22, 16:30 UTC | Apr 23, 04:40 UTC | 12h 10m |
| 2026-04-22 | CBJ5765 | - | Apr 22, 08:35 UTC | Apr 23, 04:40 UTC | 20h 5m |
| 2026-04-22 | CBJ420 | - | Apr 22, 06:35 UTC | Apr 23, 04:40 UTC | 22h 5m |
| 2026-04-22 | CBJ420 | - | Apr 22, 06:20 UTC | Apr 23, 04:30 UTC | 22h 10m |
| 2026-04-22 | CBJ419 | - | Apr 22, 02:15 UTC | Apr 22, 04:40 UTC | 2h 25m |
| 2026-04-19 | CBJ420 | - | Apr 19, 06:15 UTC | Apr 19, 08:35 UTC | 2h 20m |
| 2026-04-19 | CBJ419 | - | Apr 19, 02:15 UTC | Apr 19, 04:45 UTC | 2h 30m |
| 2026-04-18 | CBJ419 | - | Apr 18, 08:40 UTC | Apr 19, 04:45 UTC | 20h 5m |
| 2026-04-18 | CBJ419 | - | Apr 18, 06:40 UTC | Apr 19, 04:45 UTC | 22h 5m |
| 2026-04-18 | CBJ419 | - | Apr 18, 04:45 UTC | Apr 18, 05:10 UTC | 25m |
| 2026-04-18 | CBJ419 | - | Apr 18, 02:35 UTC | Apr 18, 02:55 UTC | 20m |
| 2026-04-14 | CBJ420 | - | Apr 14, 08:15 UTC | Apr 14, 08:25 UTC | 10m |
| 2026-04-14 | CBJ420 | - | Apr 14, 06:10 UTC | Apr 14, 06:30 UTC | 20m |
| 2026-04-13 | CBJ420 | - | Apr 13, 08:45 UTC | Apr 13, 09:00 UTC | 15m |
| 2026-04-13 | CBJ420 | - | Apr 13, 06:45 UTC | Apr 13, 07:05 UTC | 20m |
| 2026-04-13 | CBJ419 | - | Apr 13, 04:55 UTC | Apr 13, 05:15 UTC | 20m |
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-322N page for operator, model, and routing details .