Apparatus

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sensors Mode-S transponder

3949E5

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPF · BOEING 777-200

Hex
3949E5
Octal
16244745
Decimal
3,754,469
Country
FR
Tail
F-GSPF
Type
B772
No current signal · last broadcast Jul 26, 11:15 UTC
Flights observed
153
Distinct callsigns
20
Country
FR
Last broadcast
Jul 26, 11:15 UTC

Last known position

Most recent position reported by Mode-S 3949E5.

Country allocation

The ICAO 24-bit address 3949E5 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 - 13 2026-06-22
AFR877 - 12 2026-07-13
AFR284 Air France 12 2026-07-25
AFR283 Air France 12 2026-07-25
AFR829 - 10 2026-06-23
AFR837 - 8 2026-07-16
AFR378E - 6 2026-06-18
AFR59N Air France 5 2026-07-21
AFR58P Air France 5 2026-07-20
AFR377 - 5 2026-06-19
AFR940 Air France 3 2026-06-11
AFR89U - 3 2026-07-12
AFR874 Air France 3 2026-07-23
AFR805 - 3 2026-07-12
AFR465 Air France 3 2026-04-27
AFR442 Air France 3 2026-06-23
AFR218 Air France 3 2026-05-31
AFR217 Air France 3 2026-05-31
AFR088 - 3 2026-07-11
AFR923 - 2 2026-07-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 AFR836 CDG → NBO Jul 26, 08:20 UTCJul 26, 11:15 UTC2h 55m
2026-07-25 AFR283 CDG → NRT Jul 25, 20:00 UTCJul 26, 04:05 UTC8h 5m
2026-07-25 AFR284 NRT → CDG Jul 25, 09:15 UTCJul 25, 17:15 UTC8h 0m
2026-07-24 AFR327 YOW → CDG Jul 24, 21:20 UTCJul 25, 03:30 UTC6h 10m
2026-07-24 AFR328K CDG → YOW Jul 24, 11:40 UTCJul 24, 18:45 UTC7h 5m
2026-07-23 AFR874 CDG → ZNZ Jul 23, 11:20 UTCJul 24, 06:30 UTC19h 10m
2026-07-23 AFR874 CDG → ZNZ Jul 23, 09:20 UTCJul 24, 06:30 UTC21h 10m
2026-07-23 AFR874 CDG → ZNZ Jul 23, 08:50 UTCJul 24, 06:30 UTC21h 40m
2026-07-22 AFR327 YOW → CDG Jul 22, 21:50 UTCJul 23, 04:10 UTC6h 20m
2026-07-22 AFR328K CDG → YOW Jul 22, 11:45 UTCJul 22, 19:10 UTC7h 25m
2026-07-22 AFR33J ATL → CDG Jul 22, 00:20 UTCJul 22, 03:10 UTC2h 50m
2026-07-21 AFR32J - Jul 21, 12:40 UTCJul 21, 21:20 UTC8h 40m
2026-07-21 AFR59N DEN → CDG Jul 21, 00:40 UTCJul 21, 09:50 UTC9h 10m
2026-07-20 AFR58P CDG → DEN Jul 20, 12:10 UTCJul 20, 22:15 UTC10h 5m
2026-07-19 AFR923 - Jul 19, 09:20 UTCJul 20, 03:30 UTC18h 10m
2026-07-19 AFR923 - Jul 19, 09:05 UTCJul 20, 03:30 UTC18h 25m
2026-07-18 AFR283 CDG → NRT Jul 18, 19:45 UTCJul 19, 04:05 UTC8h 20m
2026-07-18 AFR284 - Jul 18, 09:50 UTCJul 18, 17:20 UTC7h 30m
2026-07-17 AFR283 CDG → NRT Jul 17, 20:50 UTCJul 18, 05:20 UTC8h 31m
2026-07-17 AFR284 - Jul 17, 10:20 UTCJul 17, 18:19 UTC8h 0m
2026-07-16 AFR837 - Jul 16, 09:20 UTCJul 17, 03:55 UTC18h 35m
2026-07-16 AFR837 CDG → CDG Jul 16, 08:40 UTCJul 17, 03:55 UTC19h 15m
2026-07-15 AFR283 - Jul 15, 19:50 UTCJul 16, 04:15 UTC8h 25m
2026-07-15 AFR284 - Jul 15, 09:45 UTCJul 15, 17:25 UTC7h 40m
2026-07-14 AFR283 - Jul 14, 20:10 UTCJul 15, 04:45 UTC8h 34m
2026-07-14 AFR284 - Jul 14, 10:10 UTCJul 14, 17:45 UTC7h 35m
2026-07-13 AFR877 - Jul 13, 11:20 UTCJul 14, 06:50 UTC19h 30m
2026-07-13 AFR877 - Jul 13, 09:20 UTCJul 14, 06:50 UTC21h 30m
2026-07-13 AFR877 - Jul 13, 09:00 UTCJul 14, 06:50 UTC21h 50m
2026-07-12 AFR805 - Jul 12, 14:30 UTCJul 13, 05:20 UTC14h 50m
2026-07-12 AFR89U - Jul 12, 02:40 UTCJul 12, 10:20 UTC7h 40m
2026-07-11 AFR088 - Jul 11, 14:45 UTCJul 11, 23:00 UTC8h 15m
2026-06-29 AFR33J ATL → CDG Jun 29, 00:10 UTCJun 29, 07:59 UTC7h 50m
2026-06-28 AFR32J CDG → ATL Jun 28, 12:55 UTCJun 28, 21:45 UTC8h 50m
2026-06-28 AFR59N DEN → CDG Jun 28, 01:25 UTCJun 28, 10:04 UTC8h 40m
2026-06-27 AFR58P - Jun 27, 12:39 UTCJun 27, 21:59 UTC9h 20m
2026-06-26 AFR877 JRO → CDG Jun 26, 11:20 UTCJun 27, 06:30 UTC19h 10m
2026-06-26 AFR877 JRO → CDG Jun 26, 09:20 UTCJun 27, 06:30 UTC21h 10m
2026-06-26 AFR669 - Jun 26, 00:20 UTCJun 26, 03:20 UTC3h 0m
2026-06-24 AFR668 - Jun 24, 21:40 UTCJun 25, 01:24 UTC3h 45m
2026-06-24 AFR443 - Jun 24, 01:34 UTCJun 24, 11:59 UTC10h 25m
2026-06-23 AFR442 CDG → GIG Jun 23, 22:15 UTCJun 23, 22:34 UTC20m
2026-06-23 AFR442 CDG → GIG Jun 23, 11:49 UTCJun 23, 20:44 UTC8h 55m
2026-06-23 AFR829 - Jun 23, 01:40 UTCJun 23, 04:55 UTC3h 15m
2026-06-22 AFR828 - Jun 22, 17:34 UTCJun 22, 17:44 UTC10m
2026-06-22 AFR828 - Jun 22, 09:45 UTCJun 22, 13:14 UTC3h 30m
2026-06-21 AFR902 - Jun 21, 12:10 UTCJun 22, 05:44 UTC17h 35m
2026-06-19 AFR345M YUL → CDG Jun 19, 23:39 UTCJun 20, 05:49 UTC6h 10m
2026-06-19 AFR344 - Jun 19, 12:04 UTCJun 19, 18:54 UTC6h 50m
2026-06-19 AFR377 - Jun 19, 01:24 UTCJun 19, 08:29 UTC7h 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-GSPF page for operator, model, and routing details .

Mode-S 3949E5 frequently asked

What is Mode-S code 3949E5?
3949E5 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPF.
Where is Mode-S 3949E5 registered?
Mode-S code 3949E5 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949E5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 11:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3949E5, octal 16244745, decimal 3,754,469.
What flights does 3949E5 operate?
Mode-S 3949E5 has broadcast 20 distinct callsigns, including AFR828, AFR877, AFR284, AFR283, AFR829.