sensors Mode-S transponder

3949F9

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPZ · BOEING 777-200

Hex
3949F9
Octal
16244771
Decimal
3,754,489
Country
FR
Tail
F-GSPZ
Type
B772
No current signal · last broadcast 7h ago
Flights observed
95
Distinct callsigns
20
Country
FR
Last broadcast
7h ago

Last known position

Most recent position reported by Mode-S 3949F9.

Country allocation

The ICAO 24-bit address 3949F9 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
AFR935 Air France 6 2026-05-11
AFR187 Air France 6 2026-05-20
AFR186 Air France 6 2026-05-19
AFR706 Air France 5 2026-05-13
AFR359P - 5 2026-05-24
AFR378E Air France 4 2026-04-24
AFR358P Air France 4 2026-05-23
AFR081 - 4 2026-04-14
AFR377 Air France 3 2026-04-25
AFR357E Air France 3 2026-05-25
AFR356G Air France 3 2026-05-25
AFR33J Air France 3 2026-04-13
AFR111 Air France 3 2026-05-27
AFR82M - 2 2026-04-13
AFR828 Air France 2 2026-05-08
AFR719 Air France 2 2026-05-03
AFR718 Air France 2 2026-05-03
AFR705 Air France 2 2026-04-18
AFR501 Air France 2 2026-05-29
AFR500 Air France 2 2026-05-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 AFR476 CDG → HAV May 30, 10:15 UTCMay 30, 13:30 UTC3h 15m
2026-05-29 AFR501 ABJ → ACC May 29, 01:25 UTCMay 29, 11:30 UTC10h 5m
2026-05-28 AFR500 ACC → ABJ May 28, 08:55 UTCMay 28, 20:50 UTC11h 55m
2026-05-27 AFR111 PVG → CDG May 27, 08:20 UTCMay 28, 03:45 UTC19h 25m
2026-05-27 AFR111 PVG → CDG May 27, 08:00 UTCMay 28, 03:45 UTC19h 45m
2026-05-27 AFR111 PVG → CDG May 27, 00:19 UTCMay 28, 00:05 UTC23h 45m
2026-05-26 AFR116 CDG → PVG May 26, 21:59 UTCMay 27, 15:35 UTC17h 35m
2026-05-25 AFR357E YYZ → CDG May 25, 23:24 UTCMay 26, 06:10 UTC6h 45m
2026-05-25 AFR356G CDG → YYZ May 25, 13:10 UTCMay 25, 20:50 UTC7h 39m
2026-05-24 AFR132 CDG → DFW May 24, 14:55 UTCMay 24, 18:45 UTC3h 50m
2026-05-24 AFR359P - May 24, 04:00 UTCMay 24, 10:40 UTC6h 40m
2026-05-23 AFR358P CDG → YYZ May 23, 17:30 UTCMay 24, 00:55 UTC7h 26m
2026-05-23 AFR093 MIA → CDG May 23, 04:25 UTCMay 23, 12:10 UTC7h 45m
2026-05-22 AFR092 CDG → MIA May 22, 16:20 UTCMay 23, 01:40 UTC9h 20m
2026-05-22 AFR359P YYZ → CDG May 22, 04:35 UTCMay 22, 10:45 UTC6h 10m
2026-05-21 AFR358P CDG → YYZ May 21, 18:30 UTCMay 22, 01:50 UTC7h 20m
2026-05-20 AFR187 CDG → LAS May 20, 00:05 UTCMay 20, 14:05 UTC14h 1m
2026-05-19 AFR186 LAS → CDG May 19, 08:45 UTCMay 19, 21:35 UTC12h 50m
2026-05-18 AFR923 LBV → CDG May 18, 09:05 UTCMay 19, 04:00 UTC18h 54m
2026-05-17 AFR187 CDG → LAS May 17, 00:15 UTCMay 17, 14:35 UTC14h 20m
2026-05-16 AFR186 LAS → CDG May 16, 08:05 UTCMay 16, 21:05 UTC13h 0m
2026-05-15 AFR283 CDG → NRT May 15, 19:50 UTCMay 16, 04:05 UTC8h 15m
2026-05-15 AFR284 NRT → CDG May 15, 09:45 UTCMay 15, 17:30 UTC7h 44m
2026-05-13 AFR706 ABJ → DSS May 13, 17:05 UTCMay 14, 08:00 UTC14h 55m
2026-05-12 AFR217 BOM → CDG May 12, 10:20 UTCMay 13, 05:45 UTC19h 25m
2026-05-12 AFR217 BOM → CDG May 12, 09:20 UTCMay 13, 05:45 UTC20h 25m
2026-05-11 AFR935 TNR → CDG May 11, 04:50 UTCMay 11, 09:00 UTC4h 10m
2026-05-10 AFR935 TNR → CDG May 10, 12:19 UTCMay 11, 09:00 UTC20h 41m
2026-05-10 AFR935 TNR → CDG May 10, 10:19 UTCMay 11, 09:00 UTC22h 41m
2026-05-10 AFR935 TNR → CDG May 10, 09:24 UTCMay 11, 08:15 UTC22h 50m
2026-05-09 AFR283 CDG → NRT May 9, 19:45 UTCMay 10, 04:25 UTC8h 40m
2026-05-09 AFR284 NRT → CDG May 9, 09:35 UTCMay 9, 17:15 UTC7h 40m
2026-05-09 AFR829 COF → COF May 9, 01:40 UTCMay 9, 05:05 UTC3h 25m
2026-05-08 AFR828 CDG → NBO May 8, 17:25 UTCMay 8, 17:35 UTC10m
2026-05-08 AFR828 CDG → NBO May 8, 09:34 UTCMay 8, 13:20 UTC3h 45m
2026-05-07 AFR935 TNR → CDG May 7, 05:20 UTCMay 7, 08:40 UTC3h 20m
2026-05-06 AFR935 TNR → CDG May 6, 10:20 UTCMay 7, 08:40 UTC22h 20m
2026-05-06 AFR934 CDG → TNR May 6, 08:50 UTCMay 7, 08:15 UTC23h 25m
2026-05-05 AFR989 NSI → CDG May 5, 21:05 UTCMay 6, 04:15 UTC7h 10m
2026-05-05 AFR988 POB → POB May 5, 09:05 UTCMay 5, 10:45 UTC1h 40m
2026-05-04 AFR343 YUL → CDG May 4, 21:15 UTCMay 5, 03:35 UTC6h 20m
2026-05-04 AFR342T CDG → YUL May 4, 09:00 UTCMay 4, 16:00 UTC7h 0m
2026-05-03 AFR719 DSS → CDG May 3, 23:30 UTCMay 4, 04:09 UTC4h 40m
2026-05-03 AFR718 CDG → DSS May 3, 15:40 UTCMay 3, 21:10 UTC5h 30m
2026-05-02 AFR501 ABJ → ACC May 2, 18:40 UTCMay 3, 10:45 UTC16h 4m
2026-05-02 AFR500 ACC → ABJ May 2, 08:30 UTCMay 3, 08:15 UTC23h 44m
2026-05-01 AFR719 DSS → CDG May 1, 23:05 UTCMay 2, 03:50 UTC4h 46m
2026-05-01 AFR718 CDG → DSS May 1, 15:15 UTCMay 1, 20:40 UTC5h 25m
2026-05-01 AFR443 GIG → CDG May 1, 01:30 UTCMay 1, 11:55 UTC10h 25m
2026-04-30 AFR442 CDG → GIG Apr 30, 11:50 UTCApr 30, 22:45 UTC10h 55m

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

Mode-S 3949F9 frequently asked

What is Mode-S code 3949F9?
3949F9 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPZ.
Where is Mode-S 3949F9 registered?
Mode-S code 3949F9 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949F9 broadcasting right now?
No active broadcast right now. Last signal was 7h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3949F9, octal 16244771, decimal 3,754,489.
What flights does 3949F9 operate?
Mode-S 3949F9 has broadcast 20 distinct callsigns, including AFR935, AFR187, AFR186, AFR706, AFR359P.