Apparatus

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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 1h ago
Flights observed
146
Distinct callsigns
20
Country
FR
Last broadcast
1h 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
AFR828 - 11 2026-07-11
AFR284 - 9 2026-07-13
AFR283 - 9 2026-07-13
AFR217 - 7 2026-06-29
AFR874 - 6 2026-07-12
AFR218 - 6 2026-06-29
AFR940 Air France 5 2026-05-24
AFR837 - 5 2026-07-08
AFR836 - 5 2026-07-14
AFR829 - 4 2026-07-12
AFR805 - 4 2026-07-06
AFR377 - 4 2026-06-24
AFR093 Air France 4 2026-04-18
AFR092 Air France 4 2026-04-17
AFR902 Air France 3 2026-06-06
AFR877 Air France 3 2026-06-19
AFR719 - 3 2026-07-01
AFR718 Air France 3 2026-07-01
AFR378E - 3 2026-06-23
AFR327 Air France 3 2026-06-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR836 - Jul 14, 08:55 UTCJul 14, 10:00 UTC1h 5m
2026-07-13 AFR283 - Jul 13, 19:50 UTCJul 14, 04:15 UTC8h 25m
2026-07-13 AFR284 - Jul 13, 09:30 UTCJul 13, 16:50 UTC7h 20m
2026-07-12 AFR874 - Jul 12, 12:10 UTCJul 13, 06:10 UTC18h 0m
2026-07-12 AFR874 - Jul 12, 10:05 UTCJul 13, 06:10 UTC20h 5m
2026-07-12 AFR874 - Jul 12, 08:45 UTCJul 13, 06:10 UTC21h 25m
2026-07-12 AFR829 - Jul 12, 00:20 UTCJul 12, 04:20 UTC4h 0m
2026-07-11 AFR828 - Jul 11, 17:50 UTCJul 11, 18:00 UTC10m
2026-07-11 AFR828 - Jul 11, 09:55 UTCJul 11, 13:25 UTC3h 30m
2026-07-09 AFR283 DEL → CDG Jul 9, 22:40 UTCJul 10, 07:20 UTC8h 40m
2026-07-09 AFR284 - Jul 9, 12:45 UTCJul 9, 20:20 UTC7h 35m
2026-07-08 AFR837 - Jul 8, 08:25 UTCJul 9, 03:45 UTC19h 20m
2026-07-08 AFR829 - Jul 8, 01:30 UTCJul 8, 04:35 UTC3h 5m
2026-07-07 AFR828 - Jul 7, 17:35 UTCJul 7, 17:45 UTC10m
2026-07-07 AFR828 - Jul 7, 09:50 UTCJul 7, 12:35 UTC2h 45m
2026-07-06 AFR805 - Jul 6, 15:00 UTCJul 7, 06:05 UTC15h 5m
2026-07-06 AFR33J - Jul 6, 01:00 UTCJul 6, 08:35 UTC7h 35m
2026-07-05 AFR32J CDG → ATL Jul 5, 12:25 UTCJul 5, 21:10 UTC8h 45m
2026-07-04 AFR283 DEL → CDG Jul 4, 19:50 UTCJul 5, 04:25 UTC8h 35m
2026-07-04 AFR284 - Jul 4, 09:30 UTCJul 4, 17:00 UTC7h 30m
2026-07-03 AFR283 DEL → CDG Jul 3, 19:55 UTCJul 4, 04:15 UTC8h 20m
2026-07-03 AFR284 - Jul 3, 09:25 UTCJul 3, 16:45 UTC7h 20m
2026-07-02 AFR837 - Jul 2, 08:20 UTCJul 3, 03:55 UTC19h 35m
2026-07-01 AFR719 - Jul 1, 23:30 UTCJul 2, 04:30 UTC5h 0m
2026-07-01 AFR718 CDG → DSS Jul 1, 15:55 UTCJul 1, 20:50 UTC4h 55m
2026-06-30 AFR828 - Jun 30, 10:05 UTCJul 1, 05:35 UTC19h 30m
2026-06-30 AFR828 - Jun 30, 09:40 UTCJul 1, 05:35 UTC19h 55m
2026-06-29 AFR217 - Jun 29, 20:09 UTCJun 30, 04:55 UTC8h 46m
2026-06-29 AFR218 - Jun 29, 09:25 UTCJun 29, 17:45 UTC8h 20m
2026-06-28 AFR283 DEL → CDG Jun 28, 20:04 UTCJun 29, 04:25 UTC8h 20m
2026-06-28 AFR284 - Jun 28, 09:34 UTCJun 28, 17:19 UTC7h 45m
2026-06-25 AFR343 YUL → CDG Jun 25, 21:20 UTCJun 26, 03:24 UTC6h 5m
2026-06-25 AFR342T - Jun 25, 09:14 UTCJun 25, 16:09 UTC6h 55m
2026-06-24 AFR719 - Jun 24, 23:04 UTCJun 25, 03:59 UTC4h 55m
2026-06-24 AFR718 CDG → DSS Jun 24, 15:24 UTCJun 24, 20:30 UTC5h 5m
2026-06-24 AFR377 - Jun 24, 06:25 UTCJun 24, 08:04 UTC1h 40m
2026-06-24 AFR377 - Jun 24, 01:09 UTCJun 24, 03:04 UTC1h 55m
2026-06-23 AFR378E - Jun 23, 13:59 UTCJun 23, 22:05 UTC8h 5m
2026-06-23 AFR89U MSP → CDG Jun 23, 07:29 UTCJun 23, 08:59 UTC1h 30m
2026-06-23 AFR89U MSP → CDG Jun 23, 01:25 UTCJun 23, 04:00 UTC2h 35m
2026-06-22 AFR088 CDG → SFO Jun 22, 14:49 UTCJun 22, 22:59 UTC8h 10m
2026-06-21 AFR804 - Jun 21, 14:34 UTCJun 22, 05:40 UTC15h 5m
2026-06-21 AFR59N DEN → CDG Jun 21, 02:35 UTCJun 21, 11:15 UTC8h 40m
2026-06-20 AFR58P - Jun 20, 11:49 UTCJun 20, 21:05 UTC9h 15m
2026-06-19 AFR877 JRO → CDG Jun 19, 12:04 UTCJun 20, 06:05 UTC18h 0m
2026-06-19 AFR877 JRO → CDG Jun 19, 10:04 UTCJun 20, 06:05 UTC20h 0m
2026-06-19 AFR877 JRO → CDG Jun 19, 09:09 UTCJun 20, 05:59 UTC20h 50m
2026-06-18 AFR283 DEL → CDG Jun 18, 20:05 UTCJun 19, 04:19 UTC8h 14m
2026-06-18 AFR284 - Jun 18, 10:10 UTCJun 18, 17:40 UTC7h 30m
2026-06-14 AFR837 - Jun 14, 08:15 UTCJun 15, 04:00 UTC19h 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-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 1h 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 AFR828, AFR284, AFR283, AFR217, AFR874.