sensors Mode-S transponder

3949E3

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPD · BOEING 777-200

Hex
3949E3
Octal
16244743
Decimal
3,754,467
Country
FR
Tail
F-GSPD
Type
B772
No current signal · last broadcast 3h ago
Flights observed
85
Distinct callsigns
20
Country
FR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3949E3.

Country allocation

The ICAO 24-bit address 3949E3 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
AFR116 Air France 10 2026-05-22
AFR111 Air France 9 2026-05-22
AFR218 Air France 7 2026-05-25
AFR837 Air France 6 2026-04-29
AFR828 Air France 6 2026-05-27
AFR217 Air France 6 2026-05-25
AFR283 Air France 5 2026-05-01
AFR836 Air France 4 2026-04-17
AFR829 Air France 3 2026-05-28
AFR465 Air France 3 2026-05-13
AFR442 Air France 3 2026-05-10
AFR378E Air France 3 2026-05-14
AFR377 Air France 3 2026-05-15
AFR805 Air France 2 2026-04-26
AFR443 Air France 2 2026-05-11
AFR187 Air France 2 2026-05-21
AFR186 Air France 2 2026-05-20
AFR972 Air France 1 2026-04-18
AFR971 Air France 1 2026-04-18
AFR933 Air France 1 2026-05-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFR59N DEN → CDG May 30, 00:35 UTCMay 30, 09:25 UTC8h 50m
2026-05-29 AFR58P CDG → DEN May 29, 12:05 UTCMay 29, 21:55 UTC9h 50m
2026-05-28 AFR829 COF → COF May 28, 02:50 UTCMay 28, 05:45 UTC2h 55m
2026-05-27 AFR828 CDG → NBO May 27, 18:50 UTCMay 27, 19:05 UTC15m
2026-05-27 AFR828 CDG → NBO May 27, 11:05 UTCMay 27, 14:00 UTC2h 55m
2026-05-26 AFR933 LAD → CDG May 26, 22:09 UTCMay 27, 06:44 UTC8h 35m
2026-05-26 AFR930 CDG → LAD May 26, 09:45 UTCMay 26, 17:25 UTC7h 40m
2026-05-25 AFR217 BOM → CDG May 25, 20:34 UTCMay 26, 05:40 UTC9h 5m
2026-05-25 AFR218 CDG → BOM May 25, 09:10 UTCMay 25, 17:35 UTC8h 25m
2026-05-24 AFR217 BOM → CDG May 24, 20:25 UTCMay 25, 05:40 UTC9h 15m
2026-05-24 AFR218 CDG → BOM May 24, 09:00 UTCMay 24, 17:30 UTC8h 30m
2026-05-22 AFR111 PVG → CDG May 22, 23:00 UTCMay 23, 03:20 UTC4h 19m
2026-05-22 AFR116 CDG → PVG May 22, 01:30 UTCMay 22, 23:45 UTC22h 15m
2026-05-21 AFR116 CDG → PVG May 21, 21:50 UTCMay 22, 02:15 UTC4h 25m
2026-05-21 AFR187 CDG → LAS May 21, 00:10 UTCMay 21, 14:10 UTC14h 0m
2026-05-20 AFR186 LAS → CDG May 20, 08:00 UTCMay 20, 20:30 UTC12h 30m
2026-05-19 AFR829 COF → COF May 19, 02:10 UTCMay 19, 05:15 UTC3h 5m
2026-05-18 AFR828 CDG → NBO May 18, 17:30 UTCMay 18, 17:40 UTC10m
2026-05-18 AFR828 CDG → NBO May 18, 09:55 UTCMay 18, 13:15 UTC3h 20m
2026-05-17 AFR217 BOM → CDG May 17, 21:10 UTCMay 18, 06:55 UTC9h 45m
2026-05-17 AFR218 CDG → BOM May 17, 09:20 UTCMay 17, 18:20 UTC9h 0m
2026-05-15 AFR149 LOS → CDG May 15, 14:05 UTCMay 16, 05:56 UTC15h 50m
2026-05-15 AFR377 DTW → CDG May 15, 01:25 UTCMay 15, 08:40 UTC7h 15m
2026-05-14 AFR378E CDG → DTW May 14, 14:05 UTCMay 14, 22:05 UTC8h 0m
2026-05-13 AFR465 SSA → CDG May 13, 16:35 UTCMay 14, 05:30 UTC12h 55m
2026-05-13 AFR465 SSA → CDG May 13, 08:50 UTCMay 14, 05:30 UTC20h 40m
2026-05-13 AFR465 SSA → CDG May 13, 08:30 UTCMay 14, 05:30 UTC21h 0m
2026-05-11 AFR443 GIG → CDG May 11, 02:10 UTCMay 11, 12:10 UTC10h 0m
2026-05-10 AFR442 CDG → GIG May 10, 23:00 UTCMay 10, 23:19 UTC20m
2026-05-10 AFR442 CDG → GIG May 10, 12:05 UTCMay 10, 22:15 UTC10h 10m
2026-05-08 AFR111 PVG → CDG May 8, 15:10 UTCMay 9, 03:20 UTC12h 10m
2026-05-08 AFR111 PVG → CDG May 8, 08:05 UTCMay 9, 03:20 UTC19h 15m
2026-05-08 AFR116 CDG → PVG May 8, 01:49 UTCMay 8, 19:15 UTC17h 25m
2026-05-07 AFR116 CDG → PVG May 7, 22:50 UTCMay 8, 19:15 UTC20h 25m
2026-05-07 AFR116 CDG → PVG May 7, 22:10 UTCMay 8, 19:15 UTC21h 5m
2026-05-04 AFR111 PVG → CDG May 4, 08:50 UTCMay 5, 03:25 UTC18h 36m
2026-05-04 AFR111 PVG → CDG May 4, 08:35 UTCMay 5, 03:25 UTC18h 51m
2026-05-04 AFR111 PVG → CDG May 4, 00:50 UTCMay 4, 23:50 UTC23h 1m
2026-05-03 AFR116 CDG → PVG May 3, 22:49 UTCMay 4, 22:45 UTC23h 56m
2026-05-03 AFR116 CDG → PVG May 3, 22:09 UTCMay 4, 15:35 UTC17h 25m
2026-05-03 AFR187 CDG → LAS May 3, 00:10 UTCMay 3, 14:15 UTC14h 4m
2026-05-02 AFR186 LAS → CDG May 2, 08:20 UTCMay 2, 21:10 UTC12h 50m
2026-05-01 AFR283 CDG → NRT May 1, 19:50 UTCMay 2, 04:20 UTC8h 30m
2026-05-01 AFR284 NRT → CDG May 1, 09:35 UTCMay 1, 17:15 UTC7h 40m
2026-04-29 AFR837 DLA → CDG Apr 29, 08:50 UTCApr 30, 03:40 UTC18h 50m
2026-04-29 AFR837 DLA → CDG Apr 29, 08:15 UTCApr 30, 03:40 UTC19h 25m
2026-04-28 AFR377 DTW → CDG Apr 28, 01:40 UTCApr 28, 09:05 UTC7h 25m
2026-04-27 AFR378E CDG → DTW Apr 27, 14:45 UTCApr 27, 22:30 UTC7h 45m
2026-04-26 AFR805 COO → CDG Apr 26, 14:45 UTCApr 27, 05:50 UTC15h 5m
2026-04-26 AFR377 DTW → CDG Apr 26, 01:30 UTCApr 26, 08:50 UTC7h 20m

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-GSPD page for operator, model, and routing details .

Mode-S 3949E3 frequently asked

What is Mode-S code 3949E3?
3949E3 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPD.
Where is Mode-S 3949E3 registered?
Mode-S code 3949E3 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949E3 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3949E3, octal 16244743, decimal 3,754,467.
What flights does 3949E3 operate?
Mode-S 3949E3 has broadcast 20 distinct callsigns, including AFR116, AFR111, AFR218, AFR837, AFR828.