Apparatus

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sensors Mode-S transponder

3949E3

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPD · BOEING 777-200

Hex
3949E3
Octal
16244743
Decimal
3,754,467
Country
FR
Tail
F-GSPD
Type
B772
No current signal · last broadcast Jul 26, 11:55 UTC
Flights observed
140
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 11:55 UTC

Last known position

Most recent position reported by Mode-S 3949E3.

Country allocation

The ICAO 24-bit address 3949E3 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
AFR218 Air France 11 2026-07-21
AFR217 Air France 10 2026-07-21
AFR116 Air France 10 2026-05-22
AFR837 Air France 9 2026-07-25
AFR283 Air France 9 2026-07-23
AFR111 Air France 9 2026-05-22
AFR828 Air France 6 2026-05-27
AFR836 - 5 2026-06-19
AFR378E - 5 2026-06-14
AFR377 - 5 2026-06-15
AFR284 Air France 5 2026-07-23
AFR829 Air France 3 2026-05-28
AFR59N - 3 2026-06-13
AFR58P - 3 2026-06-12
AFR465 Air France 3 2026-05-13
AFR442 Air France 3 2026-05-10
AFR805 Air France 2 2026-04-26
AFR443 Air France 2 2026-05-11
AFR35T Air France 2 2026-06-16
AFR34N Air France 2 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFR926 CDG → LBV Jul 26, 09:40 UTCJul 26, 11:55 UTC2h 15m
2026-07-25 AFR837 DLA → CDG Jul 25, 08:50 UTCJul 26, 03:55 UTC19h 5m
2026-07-24 AFR837 DLA → CDG Jul 24, 08:50 UTCJul 25, 03:45 UTC18h 55m
2026-07-24 AFR837 DLA → CDG Jul 24, 08:40 UTCJul 25, 03:45 UTC19h 5m
2026-07-23 AFR283 CDG → NRT Jul 23, 19:50 UTCJul 24, 04:15 UTC8h 25m
2026-07-23 AFR284 NRT → CDG Jul 23, 09:30 UTCJul 23, 16:50 UTC7h 20m
2026-07-22 AFR345M YUL → CDG Jul 22, 23:45 UTCJul 23, 06:00 UTC6h 15m
2026-07-22 AFR344 CDG → YUL Jul 22, 12:15 UTCJul 22, 19:15 UTC7h 0m
2026-07-21 AFR217 BOM → CDG Jul 21, 20:15 UTCJul 22, 05:25 UTC9h 10m
2026-07-21 AFR218 CDG → BOM Jul 21, 09:20 UTCJul 21, 17:35 UTC8h 15m
2026-07-20 AFR217 BOM → CDG Jul 20, 20:10 UTCJul 21, 05:35 UTC9h 25m
2026-07-20 AFR218 CDG → BOM Jul 20, 09:30 UTCJul 20, 17:40 UTC8h 10m
2026-07-19 AFR217 BOM → CDG Jul 19, 21:00 UTCJul 20, 06:05 UTC9h 5m
2026-07-19 AFR218 CDG → BOM Jul 19, 10:40 UTCJul 19, 18:50 UTC8h 10m
2026-07-10 AFR89U - Jul 10, 02:15 UTCJul 10, 09:50 UTC7h 35m
2026-07-09 AFR088 - Jul 9, 15:25 UTCJul 9, 23:30 UTC8h 5m
2026-06-23 AFR217 - Jun 23, 20:24 UTCJun 24, 05:29 UTC9h 5m
2026-06-23 AFR218 - Jun 23, 09:34 UTCJun 23, 17:15 UTC7h 40m
2026-06-22 AFR132 - Jun 22, 14:19 UTCJun 23, 05:24 UTC15h 5m
2026-06-21 AFR63J - Jun 21, 22:00 UTCJun 22, 04:24 UTC6h 25m
2026-06-21 AFR062 - Jun 21, 11:30 UTCJun 21, 19:20 UTC7h 50m
2026-06-20 AFR283 - Jun 20, 19:55 UTCJun 21, 04:14 UTC8h 20m
2026-06-20 AFR284 - Jun 20, 09:19 UTCJun 20, 16:44 UTC7h 25m
2026-06-19 AFR836 - Jun 19, 08:20 UTCJun 20, 03:49 UTC19h 30m
2026-06-19 AFR669 JIB → CDG Jun 19, 00:10 UTCJun 19, 03:24 UTC3h 15m
2026-06-17 AFR668 CDG → JIB Jun 17, 21:35 UTCJun 18, 00:25 UTC2h 50m
2026-06-16 AFR345M YUL → CDG Jun 16, 23:35 UTCJun 17, 05:45 UTC6h 10m
2026-06-16 AFR344 - Jun 16, 13:40 UTCJun 16, 20:20 UTC6h 41m
2026-06-16 AFR35T ATL → CDG Jun 16, 02:45 UTCJun 16, 10:25 UTC7h 40m
2026-06-15 AFR34N CDG → ATL Jun 15, 15:00 UTCJun 16, 00:00 UTC9h 0m
2026-06-15 AFR377 - Jun 15, 01:30 UTCJun 15, 08:25 UTC6h 55m
2026-06-14 AFR378E - Jun 14, 14:00 UTCJun 14, 21:50 UTC7h 50m
2026-06-13 AFR149 - Jun 13, 13:50 UTCJun 14, 05:30 UTC15h 41m
2026-06-13 AFR59N DEN → CDG Jun 13, 00:20 UTCJun 13, 09:05 UTC8h 44m
2026-06-12 AFR58P - Jun 12, 11:50 UTCJun 12, 21:20 UTC9h 30m
2026-06-12 AFR33J - Jun 12, 00:15 UTCJun 12, 08:15 UTC8h 1m
2026-06-11 AFR32J CDG → ATL Jun 11, 12:50 UTCJun 11, 21:25 UTC8h 35m
2026-06-11 AFR59N DEN → CDG Jun 11, 00:10 UTCJun 11, 08:50 UTC8h 40m
2026-06-10 AFR58P CDG → DEN Jun 10, 11:50 UTCJun 10, 21:30 UTC9h 40m
2026-06-10 AFR377 DTW → CDG Jun 10, 01:20 UTCJun 10, 08:30 UTC7h 10m
2026-06-09 AFR378E CDG → DTW Jun 9, 14:10 UTCJun 9, 22:10 UTC8h 0m
2026-06-09 AFR35T ATL → CDG Jun 9, 02:45 UTCJun 9, 10:40 UTC7h 55m
2026-06-08 AFR34N CDG → ATL Jun 8, 15:15 UTCJun 8, 23:50 UTC8h 35m
2026-06-07 AFR159X DFW → CDG Jun 7, 22:30 UTCJun 8, 07:15 UTC8h 45m
2026-06-07 AFR158M CDG → DFW Jun 7, 09:35 UTCJun 7, 19:25 UTC9h 50m
2026-06-06 AFR33J ATL → CDG Jun 6, 00:10 UTCJun 6, 07:50 UTC7h 40m
2026-06-05 AFR32J CDG → ATL Jun 5, 12:20 UTCJun 5, 21:15 UTC8h 55m
2026-06-04 AFR343 YUL → CDG Jun 4, 21:20 UTCJun 5, 03:30 UTC6h 10m
2026-06-04 AFR342T CDG → YUL Jun 4, 09:15 UTCJun 4, 16:20 UTC7h 5m
2026-06-03 AFR283 CDG → NRT Jun 3, 19:55 UTCJun 4, 04:30 UTC8h 35m

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

Mode-S 3949E3 frequently asked

What is Mode-S code 3949E3?
3949E3 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPD.
Where is Mode-S 3949E3 registered?
Mode-S code 3949E3 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949E3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:55 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3949E3, octal 16244743, decimal 3,754,467.
What flights does 3949E3 operate?
Mode-S 3949E3 has broadcast 20 distinct callsigns, including AFR218, AFR217, AFR116, AFR837, AFR283.