sensors Mode-S transponder
781EFC
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-32CV · AIRBUS A-320
- Hex
- 781EFC
- Octal
- 36017374
- Decimal
- 7,872,252
- Country
- CN
- Tail
- B-32CV
- Type
- A320
- Flights observed
- 55
- Distinct callsigns
- 18
- Country
- CN
- Last broadcast
- Jul 26, 17:55 UTC
Last known position
Country allocation
The ICAO 24-bit address 781EFC 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 18 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SNG1325 | Air Senegal International | 22 | 2026-07-25 |
| SNG1326 | Air Senegal International | 4 | 2026-07-25 |
| SNG8804 | - | 3 | 2026-04-21 |
| SNG6674 | Air Senegal International | 3 | 2026-06-05 |
| SNG6658 | - | 3 | 2026-07-18 |
| SNG5626 | Air Senegal International | 3 | 2026-07-20 |
| SNG8808 | Air Senegal International | 2 | 2026-04-21 |
| SNG8802 | - | 2 | 2026-07-09 |
| SNG6672 | Air Senegal International | 2 | 2026-07-21 |
| SNG6656 | Air Senegal International | 2 | 2026-07-26 |
| SNG5621 | - | 2 | 2026-07-14 |
| SNG8803 | - | 1 | 2026-04-18 |
| SNG668Z | - | 1 | 2026-05-23 |
| SNG6679 | Air Senegal International | 1 | 2026-05-08 |
| SNG6618 | Air Senegal International | 1 | 2026-05-21 |
| SNG6617 | - | 1 | 2026-06-20 |
| SNG6608 | - | 1 | 2026-07-13 |
| SNG6607 | - | 1 | 2026-07-13 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | SNG6656 | YIH → HRB | Jul 26, 17:40 UTC | Jul 26, 17:55 UTC | 15m |
| 2026-07-25 | SNG1326 | TSN → TFU | Jul 25, 10:15 UTC | Jul 25, 10:25 UTC | 10m |
| 2026-07-25 | SNG1325 | TFU → TSN | Jul 25, 06:00 UTC | Jul 25, 06:15 UTC | 15m |
| 2026-07-25 | SNG1325 | TFU → TSN | Jul 25, 03:35 UTC | Jul 25, 04:10 UTC | 35m |
| 2026-07-24 | SNG1326 | TSN → TFU | Jul 24, 12:25 UTC | Jul 24, 12:50 UTC | 25m |
| 2026-07-21 | SNG6672 | NGB → LYA | Jul 21, 16:10 UTC | Jul 21, 16:25 UTC | 15m |
| 2026-07-20 | SNG5626 | JHG → ZHA | Jul 20, 00:15 UTC | Jul 20, 08:45 UTC | 8h 30m |
| 2026-07-19 | SNG5626 | JHG → ZHA | Jul 19, 09:40 UTC | Jul 20, 08:45 UTC | 23h 5m |
| 2026-07-19 | SNG5626 | JHG → ZHA | Jul 19, 05:45 UTC | Jul 19, 05:55 UTC | 10m |
| 2026-07-18 | SNG6658 | - | Jul 18, 13:50 UTC | Jul 19, 01:10 UTC | 11h 20m |
| 2026-07-18 | SNG6658 | - | Jul 18, 09:30 UTC | Jul 18, 09:40 UTC | 10m |
| 2026-07-16 | SNG6672 | - | Jul 16, 15:25 UTC | Jul 17, 08:00 UTC | 16h 35m |
| 2026-07-14 | SNG5621 | - | Jul 14, 08:20 UTC | Jul 15, 00:30 UTC | 16h 9m |
| 2026-07-13 | SNG6608 | - | Jul 13, 08:05 UTC | Jul 13, 08:25 UTC | 20m |
| 2026-07-13 | SNG6607 | - | Jul 13, 01:20 UTC | Jul 13, 01:30 UTC | 10m |
| 2026-07-12 | SNG6656 | - | Jul 12, 16:05 UTC | Jul 12, 16:15 UTC | 10m |
| 2026-07-09 | SNG8802 | - | Jul 9, 23:25 UTC | Jul 10, 06:40 UTC | 7h 15m |
| 2026-07-09 | SNG1325 | - | Jul 9, 05:45 UTC | Jul 9, 06:10 UTC | 25m |
| 2026-07-08 | SNG1325 | - | Jul 8, 06:00 UTC | Jul 8, 06:10 UTC | 10m |
| 2026-07-07 | SNG1326 | - | Jul 7, 14:45 UTC | Jul 7, 15:00 UTC | 15m |
| 2026-07-07 | SNG1325 | - | Jul 7, 07:25 UTC | Jul 7, 07:45 UTC | 20m |
| 2026-07-06 | SNG1325 | - | Jul 6, 05:50 UTC | Jul 6, 06:00 UTC | 10m |
| 2026-07-05 | SNG1325 | - | Jul 5, 05:50 UTC | Jul 5, 06:05 UTC | 15m |
| 2026-07-04 | SNG1325 | - | Jul 4, 05:50 UTC | Jul 4, 06:05 UTC | 15m |
| 2026-07-03 | SNG1325 | - | Jul 3, 07:30 UTC | Jul 3, 07:40 UTC | 10m |
| 2026-07-01 | SNG1325 | - | Jul 1, 05:45 UTC | Jul 1, 05:55 UTC | 10m |
| 2026-06-30 | SNG1325 | - | Jun 30, 05:55 UTC | Jun 30, 06:05 UTC | 10m |
| 2026-06-29 | SNG1325 | - | Jun 29, 05:50 UTC | Jun 29, 06:05 UTC | 15m |
| 2026-06-28 | SNG1325 | - | Jun 28, 05:49 UTC | Jun 28, 06:05 UTC | 15m |
| 2026-06-27 | SNG1326 | - | Jun 27, 12:29 UTC | Jun 27, 13:20 UTC | 50m |
| 2026-06-27 | SNG1325 | - | Jun 27, 05:55 UTC | Jun 27, 06:19 UTC | 25m |
| 2026-06-26 | SNG1325 | - | Jun 26, 05:39 UTC | Jun 26, 05:55 UTC | 15m |
| 2026-06-25 | SNG1325 | - | Jun 25, 05:50 UTC | Jun 25, 06:05 UTC | 15m |
| 2026-06-24 | SNG1325 | - | Jun 24, 05:54 UTC | Jun 24, 06:10 UTC | 15m |
| 2026-06-23 | SNG1325 | - | Jun 23, 05:54 UTC | Jun 23, 06:19 UTC | 25m |
| 2026-06-22 | SNG1325 | - | Jun 22, 05:49 UTC | Jun 22, 06:00 UTC | 10m |
| 2026-06-21 | SNG1325 | - | Jun 21, 05:54 UTC | Jun 21, 06:04 UTC | 10m |
| 2026-06-20 | SNG6617 | - | Jun 20, 02:00 UTC | Jun 20, 02:14 UTC | 15m |
| 2026-06-17 | SNG5621 | - | Jun 17, 01:25 UTC | Jun 17, 07:35 UTC | 6h 10m |
| 2026-06-05 | SNG6674 | CSX → HRB | Jun 5, 06:55 UTC | Jun 5, 07:10 UTC | 15m |
| 2026-05-29 | SNG6674 | CSX → HRB | May 29, 07:05 UTC | May 29, 07:20 UTC | 15m |
| 2026-05-27 | SNG1325 | TFU → TSN | May 27, 05:40 UTC | May 27, 05:55 UTC | 15m |
| 2026-05-23 | SNG668Z | - | May 23, 00:40 UTC | May 23, 00:55 UTC | 15m |
| 2026-05-21 | SNG6618 | TVS → HRB | May 21, 03:25 UTC | May 21, 05:55 UTC | 2h 30m |
| 2026-05-20 | SNG1325 | TFU → TSN | May 20, 05:40 UTC | May 20, 06:00 UTC | 20m |
| 2026-05-08 | SNG6679 | TVS → ZUH | May 8, 06:59 UTC | May 8, 07:09 UTC | 10m |
| 2026-04-21 | SNG8808 | FOC → ZHA | Apr 21, 23:35 UTC | Apr 22, 03:20 UTC | 3h 45m |
| 2026-04-21 | SNG8808 | FOC → ZHA | Apr 21, 05:20 UTC | Apr 22, 03:20 UTC | 22h 0m |
| 2026-04-21 | SNG8804 | - | Apr 21, 01:35 UTC | Apr 21, 23:35 UTC | 22h 0m |
| 2026-04-20 | SNG6674 | CSX → HRB | Apr 20, 07:10 UTC | Apr 21, 05:30 UTC | 22h 21m |
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-32CV page for operator, model, and routing details .