sensors Mode-S transponder

3949EE

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPO · BOEING 777-200

Hex
3949EE
Octal
16244756
Decimal
3,754,478
Country
FR
Tail
F-GSPO
Type
B772
No current signal · last broadcast 1h ago
Flights observed
100
Distinct callsigns
20
Country
FR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3949EE.

Country allocation

The ICAO 24-bit address 3949EE 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
AFR989 - 6 2026-05-15
AFR935 Air France 6 2026-04-23
AFR284 Air France 6 2026-05-21
AFR283 Air France 6 2026-05-21
AFR465 Air France 5 2026-05-23
AFR378E Air France 5 2026-05-27
AFR111 Air France 5 2026-05-19
AFR010 Air France 5 2026-05-01
AFR149 Air France 4 2026-05-29
AFR116 Air France 4 2026-05-18
AFR009 - 4 2026-05-02
AFR940 Air France 3 2026-05-07
AFR926 Air France 3 2026-05-11
AFR828 Air France 3 2026-04-15
AFR377 Air France 3 2026-05-28
AFR357E Air France 3 2026-05-15
AFR356G Air France 3 2026-05-15
AFR218 Air France 3 2026-05-30
AFR829 Air France 2 2026-04-16
AFR501 Air France 2 2026-05-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFR218 CDG → BOM May 30, 09:40 UTCMay 30, 11:30 UTC1h 50m
2026-05-29 AFR149 LOS → CDG May 29, 13:55 UTCMay 30, 05:40 UTC15h 45m
2026-05-28 AFR805 COO → CDG May 28, 14:30 UTCMay 29, 05:50 UTC15h 20m
2026-05-28 AFR377 DTW → CDG May 28, 01:10 UTCMay 28, 08:20 UTC7h 10m
2026-05-27 AFR378E CDG → DTW May 27, 20:45 UTCMay 27, 22:35 UTC1h 50m
2026-05-27 AFR378E CDG → DTW May 27, 14:55 UTCMay 27, 20:40 UTC5h 45m
2026-05-27 AFR59N DEN → CDG May 27, 00:10 UTCMay 27, 09:10 UTC9h 0m
2026-05-26 AFR58P CDG → DEN May 26, 11:44 UTCMay 26, 21:20 UTC9h 35m
2026-05-26 AFR377 DTW → CDG May 26, 01:49 UTCMay 26, 08:50 UTC7h 0m
2026-05-25 AFR378E CDG → DTW May 25, 14:35 UTCMay 25, 22:49 UTC8h 14m
2026-05-24 AFR378E CDG → DTW May 24, 14:35 UTCMay 25, 08:25 UTC17h 50m
2026-05-23 AFR465 SSA → CDG May 23, 11:35 UTCMay 24, 06:30 UTC18h 55m
2026-05-23 AFR465 SSA → CDG May 23, 09:35 UTCMay 24, 06:30 UTC20h 55m
2026-05-23 AFR465 SSA → CDG May 23, 08:45 UTCMay 24, 06:30 UTC21h 45m
2026-05-22 AFR132 CDG → DFW May 22, 14:15 UTCMay 23, 05:30 UTC15h 14m
2026-05-21 AFR283 CDG → NRT May 21, 19:50 UTCMay 22, 04:10 UTC8h 20m
2026-05-21 AFR284 NRT → CDG May 21, 09:25 UTCMay 21, 17:30 UTC8h 5m
2026-05-20 AFR465 SSA → CDG May 20, 11:35 UTCMay 21, 05:50 UTC18h 15m
2026-05-20 AFR465 SSA → CDG May 20, 09:35 UTCMay 21, 05:50 UTC20h 15m
2026-05-20 AFR476 CDG → HAV May 20, 08:30 UTCMay 21, 05:50 UTC21h 20m
2026-05-19 AFR111 PVG → CDG May 19, 15:15 UTCMay 20, 03:40 UTC12h 25m
2026-05-19 AFR111 PVG → CDG May 19, 08:00 UTCMay 20, 03:40 UTC19h 40m
2026-05-18 AFR116 CDG → PVG May 18, 23:35 UTCMay 19, 23:30 UTC23h 55m
2026-05-18 AFR116 CDG → PVG May 18, 21:50 UTCMay 19, 19:40 UTC21h 50m
2026-05-17 AFR501 ABJ → ACC May 17, 00:10 UTCMay 17, 11:35 UTC11h 25m
2026-05-16 AFR500 ACC → ABJ May 16, 08:46 UTCMay 16, 19:30 UTC10h 45m
2026-05-15 AFR357E YYZ → CDG May 15, 22:15 UTCMay 16, 05:10 UTC6h 55m
2026-05-15 AFR356G CDG → YYZ May 15, 12:15 UTCMay 15, 19:45 UTC7h 29m
2026-05-15 AFR989 - May 15, 02:00 UTCMay 15, 03:40 UTC1h 40m
2026-05-14 AFR989 - May 14, 20:55 UTCMay 14, 21:05 UTC10m
2026-05-14 AFR988 POB → POB May 14, 09:25 UTCMay 14, 16:00 UTC6h 35m
2026-05-13 AFR149 LOS → CDG May 13, 14:51 UTCMay 14, 06:15 UTC15h 25m
2026-05-11 AFR926 CDG → LBV May 11, 09:35 UTCMay 12, 03:50 UTC18h 15m
2026-05-11 AFR926 CDG → LBV May 11, 09:15 UTCMay 12, 03:50 UTC18h 36m
2026-05-09 AFR971 LAD → CDG May 9, 23:00 UTCMay 10, 07:25 UTC8h 25m
2026-05-09 AFR972 CDG → LAD May 9, 11:45 UTCMay 9, 19:49 UTC8h 5m
2026-05-08 AFR217 BOM → CDG May 8, 21:20 UTCMay 9, 05:45 UTC8h 25m
2026-05-08 AFR218 CDG → BOM May 8, 17:10 UTCMay 8, 17:55 UTC45m
2026-05-08 AFR218 CDG → BOM May 8, 09:25 UTCMay 8, 16:30 UTC7h 5m
2026-05-07 AFR132 CDG → DFW May 7, 13:55 UTCMay 8, 05:14 UTC15h 19m
2026-05-07 AFR940 CDG → COO May 7, 05:40 UTCMay 7, 08:15 UTC2h 35m
2026-05-06 AFR940 CDG → COO May 6, 11:35 UTCMay 7, 08:15 UTC20h 40m
2026-05-06 AFR940 CDG → COO May 6, 09:35 UTCMay 7, 08:15 UTC22h 40m
2026-05-05 AFR111 PVG → CDG May 5, 15:25 UTCMay 6, 03:40 UTC12h 15m
2026-05-05 AFR111 PVG → CDG May 5, 08:05 UTCMay 6, 03:40 UTC19h 35m
2026-05-05 AFR111 PVG → CDG May 5, 01:50 UTCMay 6, 01:30 UTC23h 40m
2026-05-04 AFR116 CDG → PVG May 4, 23:35 UTCMay 5, 23:30 UTC23h 55m
2026-05-04 AFR116 CDG → PVG May 4, 21:55 UTCMay 5, 15:50 UTC17h 55m
2026-05-03 AFR081 SFO → CDG May 3, 03:55 UTCMay 3, 14:10 UTC10h 15m
2026-05-02 AFR82M CDG → SFO May 2, 14:15 UTCMay 3, 01:10 UTC10h 55m

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

Mode-S 3949EE frequently asked

What is Mode-S code 3949EE?
3949EE is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPO.
Where is Mode-S 3949EE registered?
Mode-S code 3949EE is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949EE broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3949EE, octal 16244756, decimal 3,754,478.
What flights does 3949EE operate?
Mode-S 3949EE has broadcast 20 distinct callsigns, including AFR989, AFR935, AFR284, AFR283, AFR465.