sensors Mode-S transponder
781538
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-302U · AIRBUS A-321
- Hex
- 781538
- Octal
- 36012470
- Decimal
- 7,869,752
- Country
- CN
- Tail
- B-302U
- Type
- A321
- Flights observed
- 90
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 22h ago
Last known position
Country allocation
The ICAO 24-bit address 781538 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 |
|---|---|---|---|
| CBJ5570 | - | 8 | 2026-07-15 |
| CBJ5765 | - | 7 | 2026-06-20 |
| CBJ5234 | - | 6 | 2026-06-21 |
| CBJ5925 | - | 5 | 2026-07-16 |
| CBJ5126 | - | 5 | 2026-06-10 |
| CBJ5532 | - | 4 | 2026-07-17 |
| CBJ5347 | - | 4 | 2026-06-30 |
| CBJ5220 | - | 3 | 2026-05-26 |
| CBJ5766 | - | 2 | 2026-06-11 |
| CBJ5618 | - | 2 | 2026-06-19 |
| CBJ5595 | - | 2 | 2026-07-13 |
| CBJ5588 | - | 2 | 2026-07-08 |
| CBJ5569 | - | 2 | 2026-07-07 |
| CBJ5531 | - | 2 | 2026-07-16 |
| CBJ5348 | - | 2 | 2026-06-30 |
| CBJ5288 | - | 2 | 2026-06-18 |
| CBJ5233 | - | 2 | 2026-06-14 |
| CBJ5219 | - | 2 | 2026-05-26 |
| CBJ5218 | - | 2 | 2026-04-21 |
| CBJ5136 | - | 2 | 2026-05-31 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CBJ5532 | - | Jul 17, 11:25 UTC | Jul 17, 11:39 UTC | 15m |
| 2026-07-16 | CBJ5531 | - | Jul 16, 13:45 UTC | Jul 17, 07:05 UTC | 17h 20m |
| 2026-07-16 | CBJ5531 | - | Jul 16, 09:30 UTC | Jul 17, 07:05 UTC | 21h 35m |
| 2026-07-16 | CBJ5925 | - | Jul 16, 01:15 UTC | Jul 16, 13:49 UTC | 12h 35m |
| 2026-07-15 | CBJ5925 | - | Jul 15, 12:10 UTC | Jul 16, 09:35 UTC | 21h 25m |
| 2026-07-15 | CBJ5570 | - | Jul 15, 11:25 UTC | Jul 16, 09:35 UTC | 22h 10m |
| 2026-07-15 | CBJ5570 | - | Jul 15, 02:10 UTC | Jul 16, 01:15 UTC | 23h 5m |
| 2026-07-14 | CBJ5570 | - | Jul 14, 13:10 UTC | Jul 15, 11:40 UTC | 22h 29m |
| 2026-07-14 | CBJ5925 | - | Jul 14, 08:25 UTC | Jul 15, 02:10 UTC | 17h 44m |
| 2026-07-13 | CBJ5925 | - | Jul 13, 16:10 UTC | Jul 14, 13:20 UTC | 21h 10m |
| 2026-07-13 | CBJ5532 | - | Jul 13, 11:25 UTC | Jul 13, 11:40 UTC | 15m |
| 2026-07-13 | CBJ5595 | - | Jul 13, 02:50 UTC | Jul 13, 07:35 UTC | 4h 45m |
| 2026-07-12 | CBJ5036 | - | Jul 12, 02:35 UTC | Jul 12, 02:50 UTC | 15m |
| 2026-07-11 | CBJ5096 | - | Jul 11, 05:05 UTC | Jul 11, 05:20 UTC | 15m |
| 2026-07-09 | CBJ5570 | - | Jul 9, 12:05 UTC | Jul 10, 11:10 UTC | 23h 5m |
| 2026-07-09 | CBJ5570 | - | Jul 9, 01:20 UTC | Jul 9, 12:10 UTC | 10h 50m |
| 2026-07-08 | CBJ5588 | - | Jul 8, 16:10 UTC | Jul 8, 16:20 UTC | 10m |
| 2026-07-08 | CBJ5570 | - | Jul 8, 01:25 UTC | Jul 8, 12:30 UTC | 11h 5m |
| 2026-07-07 | CBJ5570 | - | Jul 7, 12:35 UTC | Jul 8, 12:00 UTC | 23h 25m |
| 2026-07-07 | CBJ5569 | - | Jul 7, 11:50 UTC | Jul 8, 01:40 UTC | 13h 50m |
| 2026-07-06 | CBJ5532 | - | Jul 6, 16:05 UTC | Jul 6, 16:20 UTC | 15m |
| 2026-07-06 | CBJ5532 | - | Jul 6, 11:30 UTC | Jul 6, 11:45 UTC | 15m |
| 2026-07-04 | CBJ5595 | - | Jul 4, 03:15 UTC | Jul 4, 07:40 UTC | 4h 25m |
| 2026-07-02 | CBJ5312 | - | Jul 2, 23:15 UTC | Jul 3, 03:20 UTC | 4h 5m |
| 2026-07-01 | CBJ5896 | - | Jul 1, 23:50 UTC | Jul 2, 14:15 UTC | 14h 25m |
| 2026-07-01 | CBJ5190 | - | Jul 1, 05:20 UTC | Jul 1, 16:55 UTC | 11h 35m |
| 2026-06-30 | CBJ5348 | - | Jun 30, 13:05 UTC | Jun 30, 13:15 UTC | 10m |
| 2026-06-30 | CBJ5347 | - | Jun 30, 09:20 UTC | Jun 30, 09:30 UTC | 10m |
| 2026-06-29 | CBJ5270 | - | Jun 29, 14:34 UTC | Jun 29, 14:44 UTC | 10m |
| 2026-06-27 | CBJ5559 | - | Jun 27, 07:59 UTC | Jun 27, 08:20 UTC | 20m |
| 2026-06-26 | CBJ5379 | - | Jun 26, 09:35 UTC | Jun 26, 09:45 UTC | 10m |
| 2026-06-25 | CBJ5578 | - | Jun 25, 12:40 UTC | Jun 25, 12:50 UTC | 10m |
| 2026-06-25 | CBJ5942 | - | Jun 25, 02:14 UTC | Jun 25, 10:25 UTC | 8h 10m |
| 2026-06-23 | CBJ512T | - | Jun 23, 07:40 UTC | Jun 24, 02:00 UTC | 18h 20m |
| 2026-06-21 | CBJ5234 | - | Jun 21, 07:00 UTC | Jun 21, 15:49 UTC | 8h 50m |
| 2026-06-20 | CBJ5765 | - | Jun 20, 01:14 UTC | Jun 20, 15:04 UTC | 13h 50m |
| 2026-06-19 | CBJ5765 | - | Jun 19, 13:54 UTC | Jun 20, 05:49 UTC | 15h 55m |
| 2026-06-19 | CBJ5618 | - | Jun 19, 09:34 UTC | Jun 20, 05:49 UTC | 20h 15m |
| 2026-06-19 | CBJ5618 | - | Jun 19, 01:29 UTC | Jun 19, 14:15 UTC | 12h 45m |
| 2026-06-18 | CBJ5288 | - | Jun 18, 11:45 UTC | Jun 18, 15:25 UTC | 3h 40m |
| 2026-06-18 | CBJ5083 | - | Jun 18, 08:20 UTC | Jun 18, 08:50 UTC | 30m |
| 2026-06-15 | CBJ5189 | - | Jun 15, 13:40 UTC | Jun 16, 10:40 UTC | 21h 0m |
| 2026-06-15 | CBJ5263 | - | Jun 15, 09:35 UTC | Jun 15, 13:40 UTC | 4h 5m |
| 2026-06-15 | CBJ5944 | - | Jun 15, 01:59 UTC | Jun 15, 06:24 UTC | 4h 25m |
| 2026-06-14 | CBJ5234 | - | Jun 14, 15:25 UTC | Jun 14, 15:40 UTC | 15m |
| 2026-06-14 | CBJ5233 | - | Jun 14, 02:40 UTC | Jun 14, 02:50 UTC | 10m |
| 2026-06-13 | CBJ5234 | - | Jun 13, 06:55 UTC | Jun 13, 15:55 UTC | 9h 0m |
| 2026-06-12 | CBJ5588 | - | Jun 12, 17:15 UTC | Jun 12, 17:30 UTC | 15m |
| 2026-06-12 | CBJ5569 | - | Jun 12, 01:05 UTC | Jun 12, 13:00 UTC | 11h 55m |
| 2026-06-11 | CBJ5766 | - | Jun 11, 04:25 UTC | Jun 11, 15:10 UTC | 10h 45m |
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-302U page for operator, model, and routing details .