sensors Mode-S transponder
3949E5
ICAO 24-bit transponder address · allocated to France
Currently assigned to F-GSPF · BOEING 777-200
- Hex
- 3949E5
- Octal
- 16244745
- Decimal
- 3,754,469
- Country
- FR
- Tail
- F-GSPF
- Type
- B772
- Flights observed
- 69
- Distinct callsigns
- 20
- Country
- FR
- Last broadcast
- 1h ago
Last known position
Country allocation
The ICAO 24-bit address 3949E5 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 |
|---|---|---|---|
| AFR837 | Air France | 6 | 2026-05-25 |
| AFR284 | Air France | 6 | 2026-05-29 |
| AFR283 | Air France | 6 | 2026-05-29 |
| AFR378E | Air France | 5 | 2026-05-26 |
| AFR829 | Air France | 4 | 2026-04-26 |
| AFR828 | Air France | 4 | 2026-04-25 |
| AFR377 | Air France | 4 | 2026-05-27 |
| AFR465 | Air France | 3 | 2026-04-27 |
| AFR218 | Air France | 3 | 2026-05-31 |
| AFR217 | Air France | 3 | 2026-05-31 |
| AFR705 | Air France | 2 | 2026-04-29 |
| AFR59N | Air France | 2 | 2026-06-02 |
| AFR58P | Air France | 2 | 2026-06-01 |
| AFR357E | Air France | 2 | 2026-05-01 |
| AFR149 | Air France | 2 | 2026-05-16 |
| AFR111 | Air France | 2 | 2026-05-18 |
| AFR89U | Air France | 1 | 2026-05-22 |
| AFR836 | Air France | 1 | 2026-05-30 |
| AFR804 | Air France | 1 | 2026-05-07 |
| AFR443 | Air France | 1 | 2026-04-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | AFR064 | CDG → EWR | Jun 2, 18:00 UTC | Jun 3, 01:15 UTC | 7h 15m |
| 2026-06-02 | AFR59N | DEN → CDG | Jun 2, 00:30 UTC | Jun 2, 09:20 UTC | 8h 50m |
| 2026-06-01 | AFR58P | CDG → DEN | Jun 1, 11:45 UTC | Jun 1, 21:25 UTC | 9h 40m |
| 2026-05-31 | AFR217 | BOM → CDG | May 31, 23:05 UTC | Jun 1, 08:25 UTC | 9h 20m |
| 2026-05-31 | AFR218 | CDG → BOM | May 31, 12:00 UTC | May 31, 20:10 UTC | 8h 10m |
| 2026-05-30 | AFR836 | CDG → NBO | May 30, 08:20 UTC | May 30, 09:50 UTC | 1h 30m |
| 2026-05-29 | AFR283 | CDG → NRT | May 29, 19:55 UTC | May 30, 04:30 UTC | 8h 35m |
| 2026-05-29 | AFR284 | NRT → CDG | May 29, 09:20 UTC | May 29, 17:00 UTC | 7h 40m |
| 2026-05-28 | AFR283 | CDG → NRT | May 28, 19:50 UTC | May 29, 04:35 UTC | 8h 45m |
| 2026-05-28 | AFR284 | NRT → CDG | May 28, 09:30 UTC | May 28, 17:30 UTC | 8h 0m |
| 2026-05-27 | AFR377 | DTW → CDG | May 27, 01:05 UTC | May 27, 08:20 UTC | 7h 16m |
| 2026-05-26 | AFR378E | CDG → DTW | May 26, 14:24 UTC | May 26, 22:15 UTC | 7h 50m |
| 2026-05-25 | AFR837 | DLA → CDG | May 25, 09:20 UTC | May 26, 03:50 UTC | 18h 29m |
| 2026-05-25 | AFR837 | DLA → CDG | May 25, 08:40 UTC | May 26, 03:50 UTC | 19h 9m |
| 2026-05-22 | AFR010 | CDG → JFK | May 22, 16:50 UTC | May 22, 18:55 UTC | 2h 5m |
| 2026-05-22 | AFR89U | MSP → CDG | May 22, 01:30 UTC | May 22, 08:50 UTC | 7h 20m |
| 2026-05-21 | AFR088 | CDG → SFO | May 21, 14:15 UTC | May 21, 22:25 UTC | 8h 10m |
| 2026-05-21 | AFR377 | DTW → CDG | May 21, 03:20 UTC | May 21, 10:00 UTC | 6h 40m |
| 2026-05-20 | AFR378E | CDG → DTW | May 20, 22:40 UTC | May 21, 00:10 UTC | 1h 30m |
| 2026-05-20 | AFR378E | CDG → DTW | May 20, 14:05 UTC | May 20, 21:15 UTC | 7h 10m |
| 2026-05-20 | AFR59N | DEN → CDG | May 20, 00:55 UTC | May 20, 09:35 UTC | 8h 41m |
| 2026-05-19 | AFR58P | CDG → DEN | May 19, 12:50 UTC | May 19, 22:30 UTC | 9h 40m |
| 2026-05-18 | AFR111 | PVG → CDG | May 18, 15:05 UTC | May 19, 03:20 UTC | 12h 14m |
| 2026-05-18 | AFR111 | PVG → CDG | May 18, 08:45 UTC | May 19, 03:20 UTC | 18h 34m |
| 2026-05-17 | AFR116 | CDG → PVG | May 17, 22:35 UTC | May 18, 15:20 UTC | 16h 45m |
| 2026-05-16 | AFR149 | LOS → CDG | May 16, 14:20 UTC | May 17, 05:25 UTC | 15h 5m |
| 2026-05-09 | AFR132 | CDG → DFW | May 9, 14:05 UTC | May 10, 05:50 UTC | 15h 45m |
| 2026-05-08 | AFR345M | YUL → CDG | May 8, 23:25 UTC | May 9, 05:50 UTC | 6h 25m |
| 2026-05-08 | AFR344 | CDG → YUL | May 8, 12:14 UTC | May 8, 19:15 UTC | 7h 0m |
| 2026-05-07 | AFR804 | CDG → COO | May 7, 14:45 UTC | May 8, 06:30 UTC | 15h 45m |
| 2026-05-06 | AFR149 | LOS → CDG | May 6, 14:00 UTC | May 7, 05:10 UTC | 15h 9m |
| 2026-05-06 | AFR837 | DLA → CDG | May 6, 00:31 UTC | May 6, 03:55 UTC | 3h 25m |
| 2026-05-05 | AFR837 | DLA → CDG | May 5, 08:10 UTC | May 6, 03:55 UTC | 19h 45m |
| 2026-05-04 | AFR283 | CDG → NRT | May 4, 19:45 UTC | May 5, 04:20 UTC | 8h 35m |
| 2026-05-04 | AFR284 | NRT → CDG | May 4, 09:20 UTC | May 4, 17:15 UTC | 7h 55m |
| 2026-05-01 | AFR217 | BOM → CDG | May 1, 21:30 UTC | May 2, 05:50 UTC | 8h 20m |
| 2026-05-01 | AFR217 | BOM → CDG | May 1, 20:35 UTC | May 1, 20:45 UTC | 10m |
| 2026-05-01 | AFR218 | CDG → BOM | May 1, 17:25 UTC | May 1, 18:20 UTC | 55m |
| 2026-05-01 | AFR218 | CDG → BOM | May 1, 09:20 UTC | May 1, 16:45 UTC | 7h 25m |
| 2026-05-01 | AFR357E | YYZ → CDG | May 1, 03:55 UTC | May 1, 05:40 UTC | 1h 45m |
| 2026-04-30 | AFR357E | YYZ → CDG | Apr 30, 22:45 UTC | May 1, 00:00 UTC | 1h 15m |
| 2026-04-30 | AFR356G | CDG → YYZ | Apr 30, 12:20 UTC | Apr 30, 19:35 UTC | 7h 15m |
| 2026-04-29 | AFR705 | ABJ → CDG | Apr 29, 16:55 UTC | Apr 30, 08:20 UTC | 15h 24m |
| 2026-04-29 | AFR377 | DTW → CDG | Apr 29, 01:35 UTC | Apr 29, 09:00 UTC | 7h 26m |
| 2026-04-28 | AFR378E | CDG → DTW | Apr 28, 14:45 UTC | Apr 28, 22:35 UTC | 7h 50m |
| 2026-04-27 | AFR465 | SSA → CDG | Apr 27, 11:35 UTC | Apr 28, 06:10 UTC | 18h 35m |
| 2026-04-27 | AFR465 | SSA → CDG | Apr 27, 09:20 UTC | Apr 28, 06:10 UTC | 20h 50m |
| 2026-04-27 | AFR465 | SSA → CDG | Apr 27, 08:35 UTC | Apr 28, 06:10 UTC | 21h 35m |
| 2026-04-26 | AFR283 | CDG → NRT | Apr 26, 19:45 UTC | Apr 27, 04:20 UTC | 8h 35m |
| 2026-04-26 | AFR284 | NRT → CDG | Apr 26, 09:20 UTC | Apr 26, 17:05 UTC | 7h 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 F-GSPF page for operator, model, and routing details .