Apparatus

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sensors Mode-S transponder

3949F0

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPQ · BOEING 777-200

Hex
3949F0
Octal
16244760
Decimal
3,754,480
Country
FR
Tail
F-GSPQ
Type
B772
No current signal · last broadcast 1h ago
Flights observed
176
Distinct callsigns
20
Country
FR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3949F0.

Country allocation

The ICAO 24-bit address 3949F0 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
AFR501 - 9 2026-07-08
AFR935 Air France 8 2026-05-21
AFR149 - 7 2026-07-07
AFR132 - 7 2026-07-01
AFR874 Air France 6 2026-06-23
AFR284 - 6 2026-07-02
AFR283 - 6 2026-07-02
AFR82M Air France 5 2026-04-15
AFR378E - 5 2026-07-10
AFR377 - 5 2026-07-11
AFR218 - 5 2026-06-19
AFR217 - 5 2026-06-19
AFR89U - 4 2026-07-07
AFR837 Air France 4 2026-05-14
AFR805 Air France 4 2026-05-17
AFR500 - 4 2026-07-08
AFR431 - 4 2026-07-05
AFR430 - 4 2026-07-04
AFR332 Air France 4 2026-04-16
AFR088 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR59N - Jul 14, 01:05 UTCJul 14, 02:00 UTC55m
2026-07-13 AFR58P - Jul 13, 12:50 UTCJul 13, 22:20 UTC9h 30m
2026-07-12 AFR902 - Jul 12, 12:05 UTCJul 13, 06:40 UTC18h 35m
2026-07-11 AFR327 - Jul 11, 21:45 UTCJul 12, 04:05 UTC6h 20m
2026-07-11 AFR328K - Jul 11, 12:20 UTCJul 11, 19:25 UTC7h 5m
2026-07-11 AFR377 - Jul 11, 02:15 UTCJul 11, 09:10 UTC6h 55m
2026-07-10 AFR378E - Jul 10, 15:50 UTCJul 10, 23:50 UTC8h 0m
2026-07-10 AFR35T ATL → CDG Jul 10, 03:05 UTCJul 10, 10:55 UTC7h 50m
2026-07-09 AFR34N - Jul 9, 15:35 UTCJul 10, 00:20 UTC8h 45m
2026-07-08 AFR501 - Jul 8, 18:45 UTCJul 9, 11:05 UTC16h 20m
2026-07-08 AFR501 - Jul 8, 10:05 UTCJul 9, 10:00 UTC23h 55m
2026-07-08 AFR500 - Jul 8, 08:50 UTCJul 9, 03:20 UTC18h 30m
2026-07-07 AFR149 - Jul 7, 14:00 UTCJul 8, 05:05 UTC15h 5m
2026-07-07 AFR89U - Jul 7, 01:15 UTCJul 7, 08:55 UTC7h 40m
2026-07-06 AFR088 - Jul 6, 14:40 UTCJul 6, 22:55 UTC8h 15m
2026-07-06 AFR359P - Jul 6, 03:45 UTCJul 6, 10:25 UTC6h 40m
2026-07-05 AFR358P - Jul 5, 17:00 UTCJul 6, 00:35 UTC7h 35m
2026-07-05 AFR431 - Jul 5, 01:45 UTCJul 5, 11:40 UTC9h 55m
2026-07-04 AFR430 - Jul 4, 12:35 UTCJul 4, 22:50 UTC10h 15m
2026-07-03 AFR763 - Jul 3, 15:00 UTCJul 4, 09:05 UTC18h 5m
2026-07-02 AFR283 DEL → CDG Jul 2, 19:50 UTCJul 3, 04:35 UTC8h 45m
2026-07-02 AFR284 - Jul 2, 09:25 UTCJul 2, 17:05 UTC7h 40m
2026-07-01 AFR132 - Jul 1, 14:40 UTCJul 2, 06:15 UTC15h 35m
2026-07-01 AFR35T ATL → CDG Jul 1, 02:50 UTCJul 1, 10:45 UTC7h 55m
2026-06-30 AFR34N CDG → ATL Jun 30, 14:50 UTCJun 30, 23:35 UTC8h 45m
2026-06-30 AFR431 - Jun 30, 01:30 UTCJun 30, 11:20 UTC9h 50m
2026-06-29 AFR430 - Jun 29, 12:09 UTCJun 29, 22:35 UTC10h 25m
2026-06-28 AFR705 - Jun 28, 16:49 UTCJun 29, 08:54 UTC16h 5m
2026-06-28 AFR89U MSP → CDG Jun 28, 01:19 UTCJun 28, 09:05 UTC7h 45m
2026-06-27 AFR088 CDG → SFO Jun 27, 14:29 UTCJun 27, 22:40 UTC8h 10m
2026-06-27 AFR377 - Jun 27, 01:19 UTCJun 27, 08:29 UTC7h 10m
2026-06-26 AFR378E - Jun 26, 14:35 UTCJun 26, 22:25 UTC7h 50m
2026-06-26 AFR89U MSP → CDG Jun 26, 02:14 UTCJun 26, 09:59 UTC7h 45m
2026-06-25 AFR088 CDG → SFO Jun 25, 15:29 UTCJun 25, 23:34 UTC8h 5m
2026-06-25 AFR431 - Jun 25, 02:19 UTCJun 25, 12:10 UTC9h 50m
2026-06-24 AFR430 - Jun 24, 12:20 UTCJun 24, 22:29 UTC10h 10m
2026-06-23 AFR874 CDG → ZNZ Jun 23, 16:44 UTCJun 24, 06:25 UTC13h 40m
2026-06-23 AFR874 CDG → ZNZ Jun 23, 10:04 UTCJun 24, 06:25 UTC20h 20m
2026-06-23 AFR874 CDG → ZNZ Jun 23, 08:50 UTCJun 24, 06:25 UTC21h 35m
2026-06-22 AFR848 - Jun 22, 11:09 UTCJun 23, 05:45 UTC18h 35m
2026-06-21 AFR874 CDG → ZNZ Jun 21, 16:34 UTCJun 22, 06:19 UTC13h 45m
2026-06-21 AFR874 CDG → ZNZ Jun 21, 10:04 UTCJun 22, 06:19 UTC20h 15m
2026-06-21 AFR874 CDG → ZNZ Jun 21, 08:40 UTCJun 22, 06:19 UTC21h 40m
2026-06-20 AFR63J - Jun 20, 21:05 UTCJun 21, 03:30 UTC6h 25m
2026-06-20 AFR062 - Jun 20, 11:05 UTCJun 20, 17:59 UTC6h 55m
2026-06-19 AFR217 - Jun 19, 20:19 UTCJun 20, 05:19 UTC9h 0m
2026-06-19 AFR218 - Jun 19, 09:19 UTCJun 19, 17:39 UTC8h 20m
2026-06-18 AFR836 - Jun 18, 10:10 UTCJun 19, 05:14 UTC19h 4m
2026-06-17 AFR217 - Jun 17, 20:10 UTCJun 18, 05:25 UTC9h 15m
2026-06-17 AFR218 - Jun 17, 09:15 UTCJun 17, 17:45 UTC8h 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-GSPQ page for operator, model, and routing details .

Mode-S 3949F0 frequently asked

What is Mode-S code 3949F0?
3949F0 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPQ.
Where is Mode-S 3949F0 registered?
Mode-S code 3949F0 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949F0 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 3949F0, octal 16244760, decimal 3,754,480.
What flights does 3949F0 operate?
Mode-S 3949F0 has broadcast 20 distinct callsigns, including AFR501, AFR935, AFR149, AFR132, AFR874.