sensors Mode-S transponder

3949E0

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPA · BOEING 777-200

Hex
3949E0
Octal
16244740
Decimal
3,754,464
Country
FR
Tail
F-GSPA
Type
B772
No current signal · last broadcast 3h ago
Flights observed
67
Distinct callsigns
20
Country
FR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3949E0.

Country allocation

The ICAO 24-bit address 3949E0 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
AFR940 Air France 5 2026-05-24
AFR217 Air France 5 2026-05-29
AFR093 Air France 4 2026-04-18
AFR092 Air France 4 2026-04-17
AFR836 Air France 3 2026-05-19
AFR828 Air France 3 2026-05-15
AFR218 Air France 3 2026-05-29
AFR111 Air France 3 2026-05-09
AFR989 - 2 2026-05-17
AFR988 Air France 2 2026-05-16
AFR805 Air France 2 2026-05-21
AFR465 Air France 2 2026-05-11
AFR357E Air France 2 2026-05-10
AFR356G Air France 2 2026-05-10
AFR933 Air France 1 2026-05-14
AFR930 Air France 1 2026-05-13
AFR926 Air France 1 2026-05-25
AFR923 Air France 1 2026-05-26
AFR837 Air France 1 2026-04-16
AFR829 Air France 1 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFR217 BOM → CDG May 29, 20:05 UTCMay 30, 05:35 UTC9h 30m
2026-05-29 AFR218 CDG → BOM May 29, 09:15 UTCMay 29, 17:25 UTC8h 10m
2026-05-28 AFR343 YUL → CDG May 28, 21:05 UTCMay 29, 03:30 UTC6h 25m
2026-05-28 AFR342T CDG → YUL May 28, 09:20 UTCMay 28, 16:00 UTC6h 40m
2026-05-27 AFR217 BOM → CDG May 27, 20:05 UTCMay 28, 05:25 UTC9h 20m
2026-05-27 AFR218 CDG → BOM May 27, 09:20 UTCMay 27, 17:40 UTC8h 20m
2026-05-26 AFR149 LOS → CDG May 26, 15:00 UTCMay 27, 06:04 UTC15h 5m
2026-05-26 AFR923 LBV → CDG May 26, 00:54 UTCMay 26, 03:25 UTC2h 30m
2026-05-25 AFR926 CDG → LBV May 25, 09:15 UTCMay 25, 16:00 UTC6h 45m
2026-05-24 AFR940 CDG → COO May 24, 10:05 UTCMay 25, 04:50 UTC18h 45m
2026-05-24 AFR940 CDG → COO May 24, 08:35 UTCMay 25, 04:50 UTC20h 15m
2026-05-22 AFR217 BOM → CDG May 22, 20:50 UTCMay 23, 06:05 UTC9h 14m
2026-05-22 AFR218 CDG → BOM May 22, 09:30 UTCMay 22, 18:20 UTC8h 50m
2026-05-21 AFR805 COO → CDG May 21, 15:10 UTCMay 22, 05:45 UTC14h 35m
2026-05-21 AFR940 CDG → COO May 21, 04:05 UTCMay 21, 06:25 UTC2h 20m
2026-05-20 AFR940 CDG → COO May 20, 10:05 UTCMay 21, 06:25 UTC20h 20m
2026-05-20 AFR940 CDG → COO May 20, 09:05 UTCMay 21, 06:25 UTC21h 20m
2026-05-19 AFR836 CDG → NBO May 19, 08:10 UTCMay 20, 03:50 UTC19h 40m
2026-05-18 AFR719 DSS → CDG May 18, 23:25 UTCMay 19, 04:30 UTC5h 5m
2026-05-18 AFR718 CDG → DSS May 18, 15:25 UTCMay 18, 20:30 UTC5h 4m
2026-05-17 AFR283 CDG → NRT May 17, 20:01 UTCMay 18, 04:20 UTC8h 20m
2026-05-17 AFR284 NRT → CDG May 17, 09:20 UTCMay 17, 17:10 UTC7h 50m
2026-05-17 AFR989 - May 17, 01:55 UTCMay 17, 03:35 UTC1h 40m
2026-05-16 AFR989 - May 16, 20:55 UTCMay 16, 21:10 UTC15m
2026-05-16 AFR988 POB → POB May 16, 16:00 UTCMay 16, 16:15 UTC15m
2026-05-16 AFR988 POB → POB May 16, 09:21 UTCMay 16, 10:50 UTC1h 30m
2026-05-16 AFR829 COF → COF May 16, 01:35 UTCMay 16, 05:15 UTC3h 40m
2026-05-15 AFR828 CDG → NBO May 15, 09:35 UTCMay 15, 12:50 UTC3h 15m
2026-05-14 AFR933 LAD → CDG May 14, 21:45 UTCMay 15, 06:10 UTC8h 25m
2026-05-13 AFR930 CDG → LAD May 13, 21:05 UTCMay 14, 06:50 UTC9h 45m
2026-05-13 AFR59N DEN → CDG May 13, 00:15 UTCMay 13, 09:00 UTC8h 45m
2026-05-12 AFR58P CDG → DEN May 12, 12:10 UTCMay 12, 21:50 UTC9h 40m
2026-05-11 AFR465 SSA → CDG May 11, 10:05 UTCMay 12, 05:45 UTC19h 41m
2026-05-11 AFR465 SSA → CDG May 11, 08:40 UTCMay 12, 05:45 UTC21h 6m
2026-05-10 AFR357E YYZ → CDG May 10, 22:55 UTCMay 11, 05:30 UTC6h 35m
2026-05-10 AFR356G CDG → YYZ May 10, 12:59 UTCMay 10, 20:35 UTC7h 35m
2026-05-09 AFR111 PVG → CDG May 9, 15:10 UTCMay 10, 03:35 UTC12h 25m
2026-05-09 AFR111 PVG → CDG May 9, 07:40 UTCMay 10, 03:35 UTC19h 55m
2026-05-09 AFR111 PVG → CDG May 9, 00:05 UTCMay 9, 23:55 UTC23h 50m
2026-05-08 AFR116 CDG → PVG May 8, 21:40 UTCMay 9, 15:25 UTC17h 45m
2026-05-05 AFR327 YOW → CDG May 5, 21:30 UTCMay 6, 03:45 UTC6h 15m
2026-05-05 AFR328K CDG → YOW May 5, 11:35 UTCMay 5, 18:40 UTC7h 5m
2026-05-04 AFR357E YYZ → CDG May 4, 22:30 UTCMay 5, 05:20 UTC6h 50m
2026-05-04 AFR356G CDG → YYZ May 4, 12:30 UTCMay 4, 20:05 UTC7h 36m
2026-05-03 AFR706 ABJ → DSS May 3, 16:45 UTCMay 4, 07:45 UTC15h 0m
2026-05-03 AFR377 DTW → CDG May 3, 02:45 UTCMay 3, 10:00 UTC7h 14m
2026-05-02 AFR378E CDG → DTW May 2, 15:45 UTCMay 2, 23:30 UTC7h 45m
2026-04-22 AFR805 COO → CDG Apr 22, 14:50 UTCApr 23, 05:50 UTC15h 0m
2026-04-19 AFR217 BOM → CDG Apr 19, 14:05 UTCApr 20, 09:25 UTC19h 20m
2026-04-19 AFR217 BOM → CDG Apr 19, 13:00 UTCApr 20, 09:25 UTC20h 25m

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

Mode-S 3949E0 frequently asked

What is Mode-S code 3949E0?
3949E0 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPA.
Where is Mode-S 3949E0 registered?
Mode-S code 3949E0 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949E0 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 3949E0, octal 16244740, decimal 3,754,464.
What flights does 3949E0 operate?
Mode-S 3949E0 has broadcast 20 distinct callsigns, including AFR940, AFR217, AFR093, AFR092, AFR836.