sensors Mode-S transponder
3949F4
ICAO 24-bit transponder address · allocated to France
Currently assigned to F-GSPU · BOEING 777-200
- Hex
- 3949F4
- Octal
- 16244764
- Decimal
- 3,754,484
- Country
- FR
- Tail
- F-GSPU
- Type
- B772
- Flights observed
- 80
- Distinct callsigns
- 20
- Country
- FR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 3949F4 falls within the block assigned to France (FR) by ICAO Annex 10, Volume III. Every aircraft registered in France 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 |
|---|---|---|---|
| AFR186 | Air France | 7 | 2026-05-28 |
| AFR930 | Air France | 4 | 2026-04-16 |
| AFR187 | Air France | 4 | 2026-05-29 |
| AFR935 | Air France | 3 | 2026-05-09 |
| AFR933 | Air France | 3 | 2026-04-17 |
| AFR837 | Air France | 3 | 2026-04-24 |
| AFR500 | Air France | 3 | 2026-04-28 |
| AFR33J | Air France | 3 | 2026-05-07 |
| AFR32J | Air France | 3 | 2026-05-06 |
| AFR328K | Air France | 3 | 2026-04-17 |
| AFR327 | Air France | 3 | 2026-04-18 |
| AFR149 | Air France | 3 | 2026-05-23 |
| AFR706 | Air France | 2 | 2026-05-04 |
| AFR501 | Air France | 2 | 2026-04-28 |
| AFR378E | Air France | 2 | 2026-05-01 |
| AFR377 | Air France | 2 | 2026-05-02 |
| AFR218 | Air France | 2 | 2026-05-26 |
| AFR111 | Air France | 2 | 2026-05-15 |
| AFR934 | Air France | 1 | 2026-05-08 |
| AFR923 | Air France | 1 | 2026-05-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | AFR551 | CAI → CDG | May 30, 01:35 UTC | May 30, 05:40 UTC | 4h 5m |
| 2026-05-29 | AFR570 | CDG → CAI | May 29, 19:35 UTC | May 29, 23:00 UTC | 3h 25m |
| 2026-05-29 | AFR187 | CDG → LAS | May 29, 00:35 UTC | May 29, 14:55 UTC | 14h 20m |
| 2026-05-28 | AFR186 | LAS → CDG | May 28, 08:40 UTC | May 28, 21:00 UTC | 12h 20m |
| 2026-05-27 | AFR343 | YUL → CDG | May 27, 21:20 UTC | May 28, 03:40 UTC | 6h 20m |
| 2026-05-27 | AFR342T | CDG → YUL | May 27, 09:05 UTC | May 27, 15:50 UTC | 6h 45m |
| 2026-05-26 | AFR217 | BOM → CDG | May 26, 20:29 UTC | May 27, 05:55 UTC | 9h 25m |
| 2026-05-26 | AFR218 | CDG → BOM | May 26, 09:15 UTC | May 26, 17:39 UTC | 8h 25m |
| 2026-05-25 | AFR829 | COF → COF | May 25, 01:55 UTC | May 25, 04:55 UTC | 3h 0m |
| 2026-05-24 | AFR828 | CDG → NBO | May 24, 09:30 UTC | May 24, 13:05 UTC | 3h 35m |
| 2026-05-23 | AFR149 | LOS → CDG | May 23, 14:00 UTC | May 24, 05:30 UTC | 15h 31m |
| 2026-05-23 | AFR217A | - | May 23, 00:50 UTC | May 23, 10:15 UTC | 9h 24m |
| 2026-05-21 | AFR218 | CDG → BOM | May 21, 09:20 UTC | May 21, 18:05 UTC | 8h 45m |
| 2026-05-16 | AFR923 | LBV → CDG | May 16, 09:06 UTC | May 17, 04:05 UTC | 19h 0m |
| 2026-05-15 | AFR111 | PVG → CDG | May 15, 22:50 UTC | May 16, 03:25 UTC | 4h 35m |
| 2026-05-14 | AFR116 | CDG → PVG | May 14, 22:00 UTC | May 15, 00:35 UTC | 2h 35m |
| 2026-05-14 | AFR187 | CDG → LAS | May 14, 00:25 UTC | May 14, 14:20 UTC | 13h 55m |
| 2026-05-13 | AFR186 | LAS → CDG | May 13, 07:50 UTC | May 13, 20:45 UTC | 12h 55m |
| 2026-05-11 | AFR149 | LOS → CDG | May 11, 14:00 UTC | May 12, 06:15 UTC | 16h 15m |
| 2026-05-10 | AFR804 | CDG → COO | May 10, 15:05 UTC | May 11, 06:10 UTC | 15h 5m |
| 2026-05-09 | AFR357E | YYZ → CDG | May 9, 22:15 UTC | May 10, 05:14 UTC | 7h 0m |
| 2026-05-09 | AFR356G | CDG → YYZ | May 9, 12:05 UTC | May 9, 19:40 UTC | 7h 35m |
| 2026-05-09 | AFR935 | TNR → CDG | May 9, 05:05 UTC | May 9, 08:40 UTC | 3h 35m |
| 2026-05-08 | AFR935 | TNR → CDG | May 8, 11:05 UTC | May 9, 08:40 UTC | 21h 35m |
| 2026-05-08 | AFR935 | TNR → CDG | May 8, 09:04 UTC | May 9, 08:40 UTC | 23h 35m |
| 2026-05-08 | AFR934 | CDG → TNR | May 8, 08:59 UTC | May 9, 07:00 UTC | 22h 0m |
| 2026-05-07 | AFR33J | ATL → CDG | May 7, 00:55 UTC | May 7, 09:05 UTC | 8h 10m |
| 2026-05-06 | AFR32J | CDG → ATL | May 6, 12:10 UTC | May 6, 21:20 UTC | 9h 9m |
| 2026-05-06 | AFR33J | ATL → CDG | May 6, 00:10 UTC | May 6, 08:15 UTC | 8h 5m |
| 2026-05-05 | AFR32J | CDG → ATL | May 5, 12:30 UTC | May 5, 21:15 UTC | 8h 45m |
| 2026-05-04 | AFR706 | ABJ → DSS | May 4, 17:00 UTC | May 5, 08:40 UTC | 15h 41m |
| 2026-05-04 | AFR137T | ORD → CDG | May 4, 00:05 UTC | May 4, 07:55 UTC | 7h 50m |
| 2026-05-03 | AFR136 | CDG → ORD | May 3, 11:30 UTC | May 3, 19:50 UTC | 8h 20m |
| 2026-05-03 | AFR33J | ATL → CDG | May 3, 00:15 UTC | May 3, 08:10 UTC | 7h 54m |
| 2026-05-02 | AFR32J | CDG → ATL | May 2, 12:40 UTC | May 2, 21:50 UTC | 9h 10m |
| 2026-05-02 | AFR377 | DTW → CDG | May 2, 01:30 UTC | May 2, 09:00 UTC | 7h 30m |
| 2026-05-01 | AFR378E | CDG → DTW | May 1, 14:40 UTC | May 1, 22:40 UTC | 8h 0m |
| 2026-04-30 | AFR805 | COO → CDG | Apr 30, 15:10 UTC | May 1, 07:45 UTC | 16h 35m |
| 2026-04-30 | AFR377 | DTW → CDG | Apr 30, 01:30 UTC | Apr 30, 08:50 UTC | 7h 20m |
| 2026-04-29 | AFR378E | CDG → DTW | Apr 29, 14:35 UTC | Apr 29, 22:25 UTC | 7h 50m |
| 2026-04-28 | AFR501 | ABJ → ACC | Apr 28, 23:40 UTC | Apr 29, 10:55 UTC | 11h 16m |
| 2026-04-28 | AFR500 | ACC → ABJ | Apr 28, 08:40 UTC | Apr 28, 19:40 UTC | 11h 0m |
| 2026-04-27 | AFR149 | LOS → CDG | Apr 27, 13:50 UTC | Apr 28, 05:35 UTC | 15h 45m |
| 2026-04-26 | AFR706 | ABJ → DSS | Apr 26, 16:40 UTC | Apr 27, 07:40 UTC | 15h 0m |
| 2026-04-26 | AFR093 | MIA → CDG | Apr 26, 03:35 UTC | Apr 26, 11:50 UTC | 8h 15m |
| 2026-04-25 | AFR092 | CDG → MIA | Apr 25, 15:25 UTC | Apr 26, 00:40 UTC | 9h 15m |
| 2026-04-24 | AFR837 | DLA → CDG | Apr 24, 09:05 UTC | Apr 25, 03:55 UTC | 18h 50m |
| 2026-04-24 | AFR836 | CDG → NBO | Apr 24, 08:00 UTC | Apr 25, 03:55 UTC | 19h 55m |
| 2026-04-23 | AFR1U | JFK → CDG | Apr 23, 21:00 UTC | Apr 24, 03:50 UTC | 6h 50m |
| 2026-04-23 | AFR2N | CDG → JFK | Apr 23, 06:50 UTC | Apr 23, 13:50 UTC | 7h 0m |
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 F-GSPU page for operator, model, and routing details .