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 5h ago
Flights observed
189
Distinct callsigns
20
Country
FR
Last broadcast
5h 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 - 9 2026-07-08
AFR935 Air France 9 2026-06-07
AFR431 - 9 2026-07-12
AFR284 - 9 2026-07-08
AFR283 - 9 2026-07-08
AFR828 - 8 2026-07-01
AFR430 - 6 2026-07-11
AFR378E - 6 2026-06-15
AFR149 - 6 2026-07-04
AFR988 - 5 2026-07-07
AFR465 Air France 5 2026-05-23
AFR218 - 5 2026-07-03
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
AFR837 - 4 2026-07-06
AFR829 - 4 2026-06-19
AFR377 - 4 2026-06-16
AFR217 - 4 2026-07-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR442 - Jul 14, 13:05 UTCJul 14, 15:10 UTC2h 5m
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
2026-06-30 AFR375G - Jun 30, 20:50 UTCJul 1, 05:45 UTC8h 55m
2026-06-30 AFR374F - Jun 30, 09:15 UTCJun 30, 18:30 UTC9h 15m
2026-06-29 AFR149 - Jun 29, 14:25 UTCJun 30, 05:40 UTC15h 16m
2026-06-29 AFR35T ATL → CDG Jun 29, 03:14 UTCJun 29, 10:59 UTC7h 45m
2026-06-28 AFR34N CDG → ATL Jun 28, 15:34 UTCJun 29, 00:24 UTC8h 50m
2026-06-28 AFR431 - Jun 28, 02:39 UTCJun 28, 12:25 UTC9h 45m
2026-06-27 AFR430 - Jun 27, 12:15 UTCJun 27, 22:35 UTC10h 20m
2026-06-27 AFR89U MSP → CDG Jun 27, 01:35 UTCJun 27, 09:15 UTC7h 40m
2026-06-26 AFR088 CDG → SFO Jun 26, 14:59 UTCJun 26, 23:09 UTC8h 10m
2026-06-25 AFR132 - Jun 25, 14:09 UTCJun 26, 05:39 UTC15h 30m
2026-06-25 AFR89U MSP → CDG Jun 25, 01:24 UTCJun 25, 08:55 UTC7h 30m
2026-06-24 AFR088 CDG → SFO Jun 24, 14:20 UTCJun 24, 22:29 UTC8h 10m
2026-06-24 AFR33J ATL → CDG Jun 24, 01:30 UTCJun 24, 09:15 UTC7h 45m
2026-06-23 AFR32J CDG → ATL Jun 23, 14:04 UTCJun 23, 23:10 UTC9h 5m
2026-06-23 AFR359P YYZ → CDG Jun 23, 03:49 UTCJun 23, 10:35 UTC6h 45m
2026-06-22 AFR358P - Jun 22, 17:25 UTCJun 23, 01:04 UTC7h 40m
2026-06-22 AFR431 - Jun 22, 00:20 UTCJun 22, 13:54 UTC13h 35m
2026-06-21 AFR431 - Jun 21, 15:34 UTCJun 22, 13:54 UTC22h 20m
2026-06-21 AFR430 - Jun 21, 14:44 UTCJun 22, 13:29 UTC22h 45m
2026-06-20 AFR804 CDG → CDG Jun 20, 14:54 UTCJun 21, 05:54 UTC15h 0m
2026-06-20 AFR431 - Jun 20, 01:55 UTCJun 20, 11:44 UTC9h 50m
2026-06-19 AFR430 - Jun 19, 12:34 UTCJun 19, 22:39 UTC10h 5m

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 5h 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, AFR431, AFR284, AFR283.