sensors Mode-S transponder
781154
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8992 · AIRBUS A-321
- Hex
- 781154
- Octal
- 36010524
- Decimal
- 7,868,756
- Country
- CN
- Tail
- B-8992
- Type
- A321
- Flights observed
- 80
- Distinct callsigns
- 20
- Country
- CN
- Last broadcast
- 10h ago
Last known position
Country allocation
The ICAO 24-bit address 781154 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 |
|---|---|---|---|
| CSN3744 | - | 7 | 2026-07-17 |
| CSN3743 | - | 6 | 2026-07-16 |
| CSN6346 | - | 5 | 2026-07-09 |
| CSN6274 | - | 5 | 2026-07-08 |
| CSN8759 | - | 4 | 2026-07-16 |
| CSN5968 | China Southern Airlines | 4 | 2026-06-09 |
| CSN6220 | - | 3 | 2026-07-13 |
| CSN6218 | - | 3 | 2026-07-05 |
| CSN6202 | - | 3 | 2026-07-05 |
| CSN6141 | - | 3 | 2026-07-10 |
| CSN5824 | China Southern Airlines | 3 | 2026-06-27 |
| CSN3616 | China Southern Airlines | 3 | 2026-05-26 |
| CSN6219 | - | 2 | 2026-07-13 |
| CSN3906 | China Southern Airlines | 2 | 2026-05-18 |
| CSN3624 | China Southern Airlines | 2 | 2026-04-26 |
| CSN3615 | China Southern Airlines | 2 | 2026-05-27 |
| CSN8635 | - | 1 | 2026-07-12 |
| CSN8553 | China Southern Airlines | 1 | 2026-04-23 |
| CSN6786 | China Southern Airlines | 1 | 2026-04-30 |
| CSN6480 | China Southern Airlines | 1 | 2026-04-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | CSN3744 | - | Jul 17, 12:15 UTC | Jul 17, 12:30 UTC | 15m |
| 2026-07-17 | CSN3744 | - | Jul 17, 09:55 UTC | Jul 17, 10:05 UTC | 10m |
| 2026-07-16 | CSN3743 | - | Jul 16, 13:34 UTC | Jul 17, 04:44 UTC | 15h 10m |
| 2026-07-16 | CSN8759 | - | Jul 16, 01:10 UTC | Jul 16, 13:40 UTC | 12h 30m |
| 2026-07-15 | CSN8759 | - | Jul 15, 16:15 UTC | Jul 16, 13:40 UTC | 21h 25m |
| 2026-07-15 | CSN3744 | - | Jul 15, 13:55 UTC | Jul 15, 14:10 UTC | 15m |
| 2026-07-15 | CSN3743 | - | Jul 15, 11:55 UTC | Jul 15, 12:05 UTC | 10m |
| 2026-07-15 | CSN3743 | - | Jul 15, 04:30 UTC | Jul 15, 04:40 UTC | 10m |
| 2026-07-13 | CSN6220 | - | Jul 13, 04:30 UTC | Jul 13, 04:40 UTC | 10m |
| 2026-07-13 | CSN6219 | - | Jul 13, 02:05 UTC | Jul 13, 02:20 UTC | 15m |
| 2026-07-12 | CSN8635 | - | Jul 12, 13:25 UTC | Jul 12, 14:10 UTC | 45m |
| 2026-07-11 | CSN8759 | - | Jul 11, 01:05 UTC | Jul 11, 13:50 UTC | 12h 45m |
| 2026-07-10 | CSN8759 | - | Jul 10, 15:05 UTC | Jul 11, 13:50 UTC | 22h 45m |
| 2026-07-10 | CSN6141 | - | Jul 10, 09:50 UTC | Jul 11, 01:15 UTC | 15h 25m |
| 2026-07-10 | CSN6259 | - | Jul 10, 02:00 UTC | Jul 10, 15:15 UTC | 13h 15m |
| 2026-07-09 | CSN6346 | - | Jul 9, 12:10 UTC | Jul 10, 10:35 UTC | 22h 25m |
| 2026-07-08 | CSN6274 | - | Jul 8, 11:50 UTC | Jul 8, 12:00 UTC | 10m |
| 2026-07-08 | CSN6274 | - | Jul 8, 09:15 UTC | Jul 8, 09:25 UTC | 10m |
| 2026-07-08 | CSN6273 | - | Jul 8, 02:35 UTC | Jul 8, 02:45 UTC | 10m |
| 2026-07-06 | CSN6220 | - | Jul 6, 04:30 UTC | Jul 6, 04:40 UTC | 10m |
| 2026-07-05 | CSN6202 | - | Jul 5, 15:00 UTC | Jul 5, 15:25 UTC | 25m |
| 2026-07-05 | CSN6218 | - | Jul 5, 08:10 UTC | Jul 5, 08:20 UTC | 10m |
| 2026-07-03 | CSN5984 | - | Jul 3, 15:25 UTC | Jul 3, 16:10 UTC | 45m |
| 2026-07-02 | CSN6219 | - | Jul 2, 02:00 UTC | Jul 2, 02:10 UTC | 10m |
| 2026-06-30 | - | - | Jun 30, 10:05 UTC | Jul 1, 01:35 UTC | 15h 30m |
| 2026-06-27 | CSN5824 | WUH → HRB | Jun 27, 06:40 UTC | Jun 28, 00:20 UTC | 17h 40m |
| 2026-06-27 | CSN5824 | WUH → HRB | Jun 27, 01:49 UTC | Jun 28, 00:20 UTC | 22h 30m |
| 2026-06-26 | CSN5824 | WUH → HRB | Jun 26, 15:05 UTC | Jun 27, 11:20 UTC | 20h 15m |
| 2026-06-26 | CSN6274 | - | Jun 26, 09:30 UTC | Jun 26, 09:39 UTC | 10m |
| 2026-06-25 | CSN5299 | PKX → JHG | Jun 25, 15:50 UTC | Jun 26, 02:14 UTC | 10h 25m |
| 2026-06-25 | CSN5300 | - | Jun 25, 05:44 UTC | Jun 25, 05:55 UTC | 10m |
| 2026-06-24 | CSN6274 | - | Jun 24, 09:15 UTC | Jun 24, 09:24 UTC | 10m |
| 2026-06-24 | CSN6274 | - | Jun 24, 06:50 UTC | Jun 24, 07:05 UTC | 15m |
| 2026-06-23 | CSN6202 | PKX → HRB | Jun 23, 14:44 UTC | Jun 24, 02:20 UTC | 11h 35m |
| 2026-06-23 | CSN6218 | - | Jun 23, 08:15 UTC | Jun 23, 08:30 UTC | 15m |
| 2026-06-22 | CSN6346 | - | Jun 22, 11:14 UTC | Jun 22, 11:24 UTC | 10m |
| 2026-06-21 | CSN6346 | - | Jun 21, 11:05 UTC | Jun 21, 11:15 UTC | 10m |
| 2026-06-19 | CSN6141 | - | Jun 19, 10:04 UTC | Jun 19, 14:59 UTC | 4h 55m |
| 2026-06-09 | CSN5968 | PKX → HRB | Jun 9, 03:35 UTC | Jun 10, 00:50 UTC | 21h 15m |
| 2026-06-07 | CSN6218 | PKX → HRB | Jun 7, 08:30 UTC | Jun 7, 08:40 UTC | 10m |
| 2026-06-07 | CSN6204 | PKX → HRB | Jun 7, 00:49 UTC | Jun 7, 01:00 UTC | 10m |
| 2026-06-05 | CSN5968 | PKX → HRB | Jun 5, 03:30 UTC | Jun 5, 03:40 UTC | 10m |
| 2026-06-04 | CSN6346 | CKG → HRB | Jun 4, 11:10 UTC | Jun 4, 11:25 UTC | 15m |
| 2026-06-02 | CSN3743 | HRB → SZX | Jun 2, 07:10 UTC | Jun 2, 07:20 UTC | 10m |
| 2026-05-27 | CSN3615 | CAN → HRB | May 27, 04:45 UTC | May 27, 04:55 UTC | 10m |
| 2026-05-26 | CSN3616 | HRB → CAN | May 26, 07:05 UTC | May 27, 04:55 UTC | 21h 50m |
| 2026-05-26 | CSN3616 | HRB → CAN | May 26, 01:55 UTC | May 26, 07:19 UTC | 5h 25m |
| 2026-05-24 | CSN6086 | NRT → HRB | May 24, 03:55 UTC | May 24, 04:30 UTC | 35m |
| 2026-05-24 | CSN6085 | HRB → NRT | May 24, 01:40 UTC | May 24, 02:10 UTC | 30m |
| 2026-05-18 | CSN3906 | HRB → CAN | May 18, 02:20 UTC | May 18, 08:55 UTC | 6h 35m |
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-8992 page for operator, model, and routing details .