sensors Mode-S transponder
78100D
ICAO 24-bit transponder address · allocated to China
Currently assigned to B-8578 · AIRBUS A-321
- Hex
- 78100D
- Octal
- 36010015
- Decimal
- 7,868,429
- Country
- CN
- Tail
- B-8578
- Type
- A321
- Flights observed
- 44
- Distinct callsigns
- 17
- Country
- CN
- Last broadcast
- 23h ago
Last known position
Country allocation
The ICAO 24-bit address 78100D 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 |
|---|---|---|---|
| SNG8802 | - | 6 | 2026-06-19 |
| SNG6696 | - | 6 | 2026-07-17 |
| SNG8812 | - | 4 | 2026-05-06 |
| SNG6695 | - | 4 | 2026-07-17 |
| SNG6628 | - | 3 | 2026-05-31 |
| SNG6612 | - | 3 | 2026-07-16 |
| SNG6611 | - | 3 | 2026-07-16 |
| SNG8817 | - | 2 | 2026-06-18 |
| SNG8811 | - | 2 | 2026-04-17 |
| SNG8808 | Air Senegal International | 2 | 2026-05-05 |
| SNG6674 | - | 2 | 2026-06-26 |
| SNG6629 | - | 2 | 2026-07-11 |
| SNG8804 | - | 1 | 2026-04-30 |
| SNG6666 | - | 1 | 2026-06-30 |
| SNG6652 | - | 1 | 2026-06-21 |
| SNG6619 | - | 1 | 2026-07-07 |
| SNG6609 | - | 1 | 2026-06-27 |
Recent flights last 44
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-17 | SNG6696 | - | Jul 17, 08:59 UTC | Jul 17, 09:15 UTC | 15m |
| 2026-07-17 | SNG6695 | - | Jul 17, 06:15 UTC | Jul 17, 06:25 UTC | 10m |
| 2026-07-16 | SNG6612 | - | Jul 16, 16:44 UTC | Jul 16, 16:55 UTC | 10m |
| 2026-07-16 | SNG6611 | - | Jul 16, 14:35 UTC | Jul 16, 14:45 UTC | 10m |
| 2026-07-15 | SNG6696 | - | Jul 15, 11:40 UTC | Jul 15, 11:55 UTC | 15m |
| 2026-07-15 | SNG6695 | - | Jul 15, 09:05 UTC | Jul 15, 09:15 UTC | 10m |
| 2026-07-14 | SNG6612 | - | Jul 14, 14:55 UTC | Jul 14, 15:05 UTC | 10m |
| 2026-07-14 | SNG6611 | - | Jul 14, 12:30 UTC | Jul 14, 12:40 UTC | 10m |
| 2026-07-13 | SNG6696 | - | Jul 13, 08:55 UTC | Jul 13, 09:15 UTC | 20m |
| 2026-07-13 | SNG6695 | - | Jul 13, 05:40 UTC | Jul 13, 05:50 UTC | 10m |
| 2026-07-12 | SNG6696 | - | Jul 12, 08:45 UTC | Jul 12, 09:05 UTC | 20m |
| 2026-07-12 | SNG6695 | - | Jul 12, 05:45 UTC | Jul 12, 06:01 UTC | 15m |
| 2026-07-11 | SNG6612 | - | Jul 11, 15:10 UTC | Jul 11, 15:25 UTC | 15m |
| 2026-07-11 | SNG6611 | - | Jul 11, 12:50 UTC | Jul 11, 13:05 UTC | 15m |
| 2026-07-11 | SNG6629 | - | Jul 11, 04:50 UTC | Jul 11, 05:05 UTC | 15m |
| 2026-07-07 | SNG6619 | - | Jul 7, 15:35 UTC | Jul 7, 15:45 UTC | 10m |
| 2026-07-07 | SNG6629 | - | Jul 7, 04:25 UTC | Jul 7, 04:40 UTC | 15m |
| 2026-06-30 | SNG6666 | - | Jun 30, 09:00 UTC | Jun 30, 09:10 UTC | 10m |
| 2026-06-29 | SNG6696 | - | Jun 29, 09:05 UTC | Jun 29, 09:14 UTC | 10m |
| 2026-06-27 | SNG6609 | - | Jun 27, 06:05 UTC | Jun 27, 06:15 UTC | 10m |
| 2026-06-26 | SNG6674 | - | Jun 26, 07:00 UTC | Jun 26, 07:14 UTC | 15m |
| 2026-06-24 | SNG6696 | - | Jun 24, 10:39 UTC | Jun 24, 10:55 UTC | 15m |
| 2026-06-22 | SNG6674 | - | Jun 22, 07:00 UTC | Jun 22, 07:10 UTC | 10m |
| 2026-06-21 | SNG6652 | - | Jun 21, 10:44 UTC | Jun 22, 07:10 UTC | 20h 25m |
| 2026-06-19 | SNG8802 | - | Jun 19, 08:04 UTC | Jun 19, 08:14 UTC | 10m |
| 2026-06-18 | SNG8817 | - | Jun 18, 01:45 UTC | Jun 18, 07:45 UTC | 6h 0m |
| 2026-06-06 | SNG8802 | TNA → ZHA | Jun 6, 22:39 UTC | Jun 7, 04:10 UTC | 5h 30m |
| 2026-06-06 | SNG8817 | - | Jun 6, 02:35 UTC | Jun 6, 06:00 UTC | 3h 25m |
| 2026-06-04 | SNG8802 | TNA → ZHA | Jun 4, 22:45 UTC | Jun 5, 04:15 UTC | 5h 30m |
| 2026-06-02 | SNG8802 | TNA → ZHA | Jun 2, 22:45 UTC | Jun 3, 04:25 UTC | 5h 40m |
| 2026-05-31 | SNG6628 | - | May 31, 10:20 UTC | May 31, 10:35 UTC | 15m |
| 2026-05-06 | SNG8812 | - | May 6, 15:10 UTC | May 6, 15:40 UTC | 30m |
| 2026-05-05 | SNG8808 | FOC → ZHA | May 5, 23:30 UTC | May 6, 03:25 UTC | 3h 55m |
| 2026-05-04 | SNG6628 | - | May 4, 10:35 UTC | May 4, 14:50 UTC | 4h 15m |
| 2026-05-01 | SNG6628 | - | May 1, 10:35 UTC | May 1, 14:45 UTC | 4h 10m |
| 2026-04-30 | SNG8804 | - | Apr 30, 01:40 UTC | Apr 30, 05:50 UTC | 4h 10m |
| 2026-04-29 | SNG8808 | FOC → ZHA | Apr 29, 03:24 UTC | Apr 29, 16:00 UTC | 12h 36m |
| 2026-04-22 | SNG8812 | - | Apr 22, 06:30 UTC | Apr 22, 16:35 UTC | 10h 5m |
| 2026-04-18 | SNG8802 | TNA → ZHA | Apr 18, 08:20 UTC | Apr 18, 08:40 UTC | 20m |
| 2026-04-17 | SNG8812 | - | Apr 17, 15:25 UTC | Apr 17, 16:10 UTC | 45m |
| 2026-04-17 | SNG8811 | - | Apr 17, 06:50 UTC | Apr 17, 07:05 UTC | 15m |
| 2026-04-14 | SNG8802 | - | Apr 14, 07:10 UTC | Apr 14, 07:30 UTC | 20m |
| 2026-04-13 | SNG8812 | - | Apr 13, 14:45 UTC | Apr 13, 15:30 UTC | 45m |
| 2026-04-13 | SNG8811 | - | Apr 13, 05:50 UTC | Apr 13, 06:25 UTC | 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-8578 page for operator, model, and routing details .