Apparatus

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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 Jul 26, 19:25 UTC
Flights observed
211
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 19:25 UTC

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
AFR828 Air France 10 2026-07-19
AFR431 Air France 10 2026-07-24
AFR989 - 9 2026-07-08
AFR935 Air France 9 2026-06-07
AFR284 - 9 2026-07-08
AFR283 - 9 2026-07-08
AFR430 Air France 7 2026-07-23
AFR378E Air France 7 2026-07-22
AFR149 - 6 2026-07-04
AFR988 - 5 2026-07-07
AFR829 Air France 5 2026-07-20
AFR500 Air France 5 2026-07-26
AFR465 Air France 5 2026-05-23
AFR377 Air France 5 2026-07-23
AFR218 - 5 2026-07-03
AFR132 Air France 5 2026-07-25
AFR111 Air France 5 2026-05-19
AFR010 Air France 5 2026-05-01
AFR926 Air France 4 2026-06-01
AFR902 - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFR500 ACC → ABJ Jul 26, 08:30 UTCJul 26, 19:25 UTC10h 55m
2026-07-25 AFR132 CDG → DFW Jul 25, 14:40 UTCJul 26, 05:00 UTC14h 20m
2026-07-25 AFR359P - Jul 25, 03:40 UTCJul 25, 10:30 UTC6h 50m
2026-07-24 AFR358P CDG → YYZ Jul 24, 17:25 UTCJul 25, 00:50 UTC7h 25m
2026-07-24 AFR431 SJO → CDG Jul 24, 02:05 UTCJul 24, 12:35 UTC10h 30m
2026-07-23 AFR430 CDG → SJO Jul 23, 12:15 UTCJul 23, 22:25 UTC10h 10m
2026-07-23 AFR377 DTW → CDG Jul 23, 01:35 UTCJul 23, 08:50 UTC7h 15m
2026-07-22 AFR378E CDG → DTW Jul 22, 14:25 UTCJul 22, 22:40 UTC8h 15m
2026-07-22 AFR501 ABJ → ACC Jul 22, 00:35 UTCJul 22, 10:25 UTC9h 50m
2026-07-21 AFR500 ACC → ABJ Jul 21, 08:35 UTCJul 21, 20:00 UTC11h 25m
2026-07-21 AFR841 FDF → ORY Jul 21, 01:30 UTCJul 21, 03:35 UTC2h 5m
2026-07-20 AFR842 ORY → FDF Jul 20, 08:05 UTCJul 20, 09:10 UTC1h 5m
2026-07-20 AFR829 COF → COF Jul 20, 02:05 UTCJul 20, 05:15 UTC3h 10m
2026-07-19 AFR828 CDG → NBO Jul 19, 17:55 UTCJul 19, 18:10 UTC15m
2026-07-19 AFR828 CDG → NBO Jul 19, 10:15 UTCJul 19, 13:00 UTC2h 45m
2026-07-18 AFR805 - Jul 18, 15:20 UTCJul 19, 07:15 UTC15h 55m
2026-07-17 AFR4199 LOS → CDG Jul 17, 15:40 UTCJul 18, 06:10 UTC14h 31m
2026-07-16 AFR874 - Jul 16, 11:34 UTCJul 17, 07:00 UTC19h 25m
2026-07-16 AFR874 - Jul 16, 09:45 UTCJul 17, 07:00 UTC21h 15m
2026-07-15 AFR719 - Jul 15, 23:50 UTCJul 16, 04:35 UTC4h 45m
2026-07-15 AFR718 - Jul 15, 16:05 UTCJul 15, 21:20 UTC5h 15m
2026-07-15 AFR443 - Jul 15, 02:20 UTCJul 15, 12:50 UTC10h 30m
2026-07-14 AFR442 - Jul 14, 13:05 UTCJul 14, 23:55 UTC10h 49m
2026-07-12 AFR431 SJO → CDG Jul 12, 01:55 UTCJul 12, 12:05 UTC10h 10m
2026-07-11 AFR430 - Jul 11, 13:25 UTCJul 11, 23:40 UTC10h 15m
2026-07-11 AFR902 - Jul 11, 08:30 UTCJul 11, 10:20 UTC1h 50m
2026-07-11 AFR902 - Jul 11, 03:30 UTCJul 11, 03:40 UTC10m
2026-07-11 AFR902 - Jul 11, 01:10 UTCJul 11, 01:30 UTC20m
2026-07-10 AFR902 - Jul 10, 16:10 UTCJul 10, 17:55 UTC1h 45m
2026-07-10 AFR501 - Jul 10, 00:35 UTCJul 10, 11:15 UTC10h 40m
2026-07-09 AFR500 - Jul 9, 09:00 UTCJul 9, 20:00 UTC11h 0m
2026-07-08 AFR283 - Jul 8, 19:50 UTCJul 9, 04:20 UTC8h 30m
2026-07-08 AFR284 - Jul 8, 09:15 UTCJul 8, 16:40 UTC7h 25m
2026-07-08 AFR989 - Jul 8, 01:40 UTCJul 8, 03:30 UTC1h 50m
2026-07-07 AFR989 - Jul 7, 20:45 UTCJul 7, 20:55 UTC10m
2026-07-07 AFR988 - Jul 7, 16:25 UTCJul 7, 16:35 UTC10m
2026-07-07 AFR988 - Jul 7, 09:55 UTCJul 7, 11:25 UTC1h 30m
2026-07-06 AFR837 - Jul 6, 09:35 UTCJul 7, 03:50 UTC18h 15m
2026-07-06 AFR837 - Jul 6, 08:30 UTCJul 7, 03:50 UTC19h 20m
2026-07-05 AFR283 - Jul 5, 19:50 UTCJul 5, 20:20 UTC30m
2026-07-05 AFR284 - Jul 5, 09:50 UTCJul 5, 17:20 UTC7h 30m
2026-07-04 AFR149 - Jul 4, 14:20 UTCJul 5, 05:35 UTC15h 15m
2026-07-03 AFR217 - Jul 3, 20:10 UTCJul 4, 05:30 UTC9h 20m
2026-07-03 AFR218 - Jul 3, 09:25 UTCJul 3, 17:45 UTC8h 20m
2026-07-02 AFR989 NSI → CDG Jul 2, 21:10 UTCJul 3, 03:50 UTC6h 40m
2026-07-02 AFR988 - Jul 2, 16:45 UTCJul 2, 16:55 UTC10m
2026-07-02 AFR988 - Jul 2, 10:10 UTCJul 2, 11:35 UTC1h 25m
2026-07-02 AFR829A - Jul 2, 02:20 UTCJul 2, 06:00 UTC3h 40m
2026-07-01 AFR828 - Jul 1, 19:15 UTCJul 1, 19:25 UTC10m
2026-07-01 AFR828 - Jul 1, 11:15 UTCJul 1, 14:45 UTC3h 30m

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 Jul 26, 19:25 UTC.
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 AFR828, AFR431, AFR989, AFR935, AFR284.