sensors Mode-S transponder
781B3E
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-322L · AIRBUS A-321neo
- Hex
- 781B3E
- Octal
- 36015476
- Decimal
- 7,871,294
- Country
- CN
- Tail
- B-322L
- Type
- A21N
- Flights observed
- 37
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- 10h ago
Last known position
Country allocation
The ICAO 24-bit address 781B3E 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 17 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CBJ5217 | - | 8 | 2026-05-20 |
| CBJ5218 | - | 5 | 2026-05-21 |
| CBJ5196 | - | 3 | 2026-06-01 |
| CBJ5195 | - | 3 | 2026-05-30 |
| CBJ5136 | - | 3 | 2026-06-02 |
| CBJ5768 | - | 2 | 2026-06-01 |
| CBJ5220 | - | 2 | 2026-04-30 |
| CBJ5219 | - | 2 | 2026-04-30 |
| CBJ5921 | - | 1 | 2026-05-17 |
| CBJ5532 | - | 1 | 2026-05-26 |
| CBJ5347 | - | 1 | 2026-05-11 |
| CBJ5290 | - | 1 | 2026-04-13 |
| CBJ5289 | - | 1 | 2026-04-13 |
| CBJ5145 | - | 1 | 2026-04-24 |
| CBJ5125 | - | 1 | 2026-04-22 |
| CBJ5114 | - | 1 | 2026-05-08 |
| CBJ5036 | - | 1 | 2026-05-25 |
Recent flights last 37
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | CBJ5136 | - | Jun 2, 11:30 UTC | Jun 2, 16:10 UTC | 4h 40m |
| 2026-06-01 | CBJ5196 | - | Jun 1, 08:15 UTC | Jun 1, 16:10 UTC | 7h 55m |
| 2026-06-01 | CBJ5768 | - | Jun 1, 01:20 UTC | Jun 1, 05:25 UTC | 4h 5m |
| 2026-05-31 | CBJ5196 | - | May 31, 15:45 UTC | May 31, 16:05 UTC | 20m |
| 2026-05-30 | CBJ5195 | - | May 30, 05:10 UTC | May 30, 16:00 UTC | 10h 50m |
| 2026-05-29 | CBJ5195 | - | May 29, 16:00 UTC | May 30, 08:25 UTC | 16h 25m |
| 2026-05-29 | CBJ5195 | - | May 29, 08:40 UTC | May 30, 05:10 UTC | 20h 30m |
| 2026-05-28 | CBJ5768 | - | May 28, 01:10 UTC | May 28, 16:10 UTC | 15h 0m |
| 2026-05-27 | CBJ5196 | - | May 27, 15:40 UTC | May 27, 16:00 UTC | 20m |
| 2026-05-26 | CBJ5532 | - | May 26, 11:20 UTC | May 26, 11:30 UTC | 10m |
| 2026-05-25 | CBJ5036 | - | May 25, 02:35 UTC | May 25, 02:55 UTC | 20m |
| 2026-05-21 | CBJ5218 | - | May 21, 08:15 UTC | May 21, 08:25 UTC | 10m |
| 2026-05-20 | CBJ5217 | - | May 20, 23:35 UTC | May 20, 23:55 UTC | 20m |
| 2026-05-19 | CBJ5217 | - | May 19, 23:40 UTC | May 20, 08:00 UTC | 8h 21m |
| 2026-05-18 | CBJ5217 | - | May 18, 23:55 UTC | May 19, 00:10 UTC | 15m |
| 2026-05-18 | CBJ5218 | - | May 18, 07:50 UTC | May 18, 08:05 UTC | 15m |
| 2026-05-17 | CBJ5217 | - | May 17, 23:50 UTC | May 18, 00:05 UTC | 15m |
| 2026-05-17 | CBJ5921 | - | May 17, 10:50 UTC | May 17, 11:05 UTC | 15m |
| 2026-05-11 | CBJ5347 | - | May 11, 05:35 UTC | May 11, 05:45 UTC | 10m |
| 2026-05-08 | CBJ5114 | - | May 8, 05:35 UTC | May 8, 05:44 UTC | 10m |
| 2026-05-03 | CBJ5217 | - | May 3, 23:55 UTC | May 4, 00:19 UTC | 25m |
| 2026-05-03 | CBJ5218 | - | May 3, 08:10 UTC | May 3, 08:25 UTC | 15m |
| 2026-05-02 | CBJ5217 | - | May 2, 23:45 UTC | May 3, 00:05 UTC | 20m |
| 2026-05-02 | CBJ5218 | - | May 2, 08:05 UTC | May 2, 08:20 UTC | 15m |
| 2026-05-01 | CBJ5217 | - | May 1, 23:40 UTC | May 1, 23:55 UTC | 15m |
| 2026-04-30 | CBJ5217 | - | Apr 30, 23:40 UTC | May 1, 08:15 UTC | 8h 35m |
| 2026-04-30 | CBJ5220 | - | Apr 30, 15:45 UTC | Apr 30, 16:00 UTC | 15m |
| 2026-04-30 | CBJ5219 | - | Apr 30, 07:40 UTC | Apr 30, 08:05 UTC | 25m |
| 2026-04-29 | CBJ5218 | - | Apr 29, 08:10 UTC | Apr 29, 08:30 UTC | 20m |
| 2026-04-26 | CBJ5220 | - | Apr 26, 15:25 UTC | Apr 26, 15:40 UTC | 15m |
| 2026-04-26 | CBJ5219 | - | Apr 26, 07:35 UTC | Apr 26, 07:55 UTC | 20m |
| 2026-04-24 | CBJ5136 | - | Apr 24, 16:20 UTC | Apr 25, 07:55 UTC | 15h 35m |
| 2026-04-24 | CBJ5136 | - | Apr 24, 12:20 UTC | Apr 25, 07:55 UTC | 19h 35m |
| 2026-04-24 | CBJ5145 | - | Apr 24, 02:40 UTC | Apr 24, 16:40 UTC | 14h 0m |
| 2026-04-22 | CBJ5125 | - | Apr 22, 08:10 UTC | Apr 22, 13:30 UTC | 5h 20m |
| 2026-04-13 | CBJ5290 | - | Apr 13, 15:05 UTC | Apr 13, 15:15 UTC | 10m |
| 2026-04-13 | CBJ5289 | - | Apr 13, 13:25 UTC | Apr 13, 13:45 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-322L page for operator, model, and routing details .