Apparatus

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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
Broadcasting now · callsign AFR923 · 40,000 ft
Flights observed
180
Distinct callsigns
20
Country
FR
Last broadcast
25m ago

Current position

3949F9 is currently broadcasting. Map zoomed to live position.

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 - 8 2026-06-16
AFR378E - 8 2026-07-08
AFR988 - 7 2026-07-13
AFR501 - 7 2026-07-07
AFR377 - 7 2026-07-09
AFR33J - 7 2026-07-02
AFR359P - 6 2026-06-28
AFR187 Air France 6 2026-05-20
AFR186 Air France 6 2026-05-19
AFR989 - 5 2026-07-14
AFR706 Air France 5 2026-05-13
AFR500 - 5 2026-07-07
AFR358P - 5 2026-06-27
AFR32J Air France 5 2026-07-01
AFR284 - 5 2026-06-25
AFR283 - 5 2026-06-25
AFR705 - 4 2026-06-19
AFR328K - 4 2026-07-09
AFR327 - 4 2026-07-09
AFR217 - 4 2026-07-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR926 - Jul 14, 09:45 UTCJul 15, 02:15 UTC16h 29m
2026-07-14 AFR989 - Jul 14, 01:30 UTCJul 14, 03:25 UTC1h 55m
2026-07-13 AFR989 - Jul 13, 20:40 UTCJul 13, 20:50 UTC10m
2026-07-13 AFR988 - Jul 13, 16:15 UTCJul 13, 16:35 UTC20m
2026-07-13 AFR988 - Jul 13, 09:55 UTCJul 13, 11:25 UTC1h 30m
2026-07-12 AFR217 - Jul 12, 20:05 UTCJul 13, 05:15 UTC9h 10m
2026-07-12 AFR218 - Jul 12, 09:20 UTCJul 12, 17:25 UTC8h 5m
2026-07-11 AFR989 - Jul 11, 21:35 UTCJul 12, 04:40 UTC7h 5m
2026-07-11 AFR988 - Jul 11, 18:35 UTCJul 11, 18:50 UTC15m
2026-07-11 AFR988 - Jul 11, 12:30 UTCJul 11, 14:00 UTC1h 30m
2026-07-11 AFR347F - Jul 11, 03:30 UTCJul 11, 08:45 UTC5h 15m
2026-07-11 AFR347F - Jul 11, 02:40 UTCJul 11, 03:25 UTC45m
2026-07-10 AFR346 - Jul 10, 16:45 UTCJul 10, 23:50 UTC7h 6m
2026-07-09 AFR327 YOW → CDG Jul 9, 22:00 UTCJul 10, 04:15 UTC6h 15m
2026-07-09 AFR328K - Jul 9, 12:05 UTCJul 9, 19:25 UTC7h 20m
2026-07-09 AFR377 - Jul 9, 01:35 UTCJul 9, 08:45 UTC7h 10m
2026-07-08 AFR378E - Jul 8, 14:50 UTCJul 8, 22:45 UTC7h 55m
2026-07-07 AFR501 - Jul 7, 23:35 UTCJul 8, 11:20 UTC11h 45m
2026-07-07 AFR500 - Jul 7, 08:40 UTCJul 7, 20:05 UTC11h 25m
2026-07-06 AFR327 - Jul 6, 21:15 UTCJul 7, 03:35 UTC6h 20m
2026-07-06 AFR328K - Jul 6, 11:35 UTCJul 6, 18:40 UTC7h 5m
2026-07-06 AFR377 - Jul 6, 01:30 UTCJul 6, 08:30 UTC7h 0m
2026-07-05 AFR378E - Jul 5, 14:35 UTCJul 5, 22:35 UTC8h 0m
2026-07-04 AFR501 - Jul 4, 18:55 UTCJul 5, 11:20 UTC16h 25m
2026-07-04 AFR501 - Jul 4, 10:20 UTCJul 5, 10:15 UTC23h 55m
2026-07-04 AFR500 - Jul 4, 08:55 UTCJul 5, 03:25 UTC18h 30m
2026-07-03 AFR837 - Jul 3, 08:45 UTCJul 4, 03:55 UTC19h 10m
2026-07-02 AFR327 - Jul 2, 22:15 UTCJul 3, 04:15 UTC6h 0m
2026-07-02 AFR328K - Jul 2, 11:30 UTCJul 2, 19:05 UTC7h 35m
2026-07-02 AFR33J ATL → CDG Jul 2, 00:25 UTCJul 2, 08:30 UTC8h 5m
2026-07-01 AFR32J CDG → ATL Jul 1, 12:35 UTCJul 1, 21:40 UTC9h 5m
2026-07-01 AFR89U MSP → CDG Jul 1, 02:10 UTCJul 1, 09:20 UTC7h 10m
2026-06-30 AFR088 CDG → SFO Jun 30, 14:15 UTCJun 30, 22:45 UTC8h 30m
2026-06-30 AFR377 - Jun 30, 01:35 UTCJun 30, 08:35 UTC7h 0m
2026-06-29 AFR378E - Jun 29, 15:00 UTCJun 29, 23:05 UTC8h 5m
2026-06-29 AFR11E - Jun 29, 05:20 UTCJun 29, 11:39 UTC6h 20m
2026-06-28 AFR012 CDG → JFK Jun 28, 18:55 UTCJun 29, 02:25 UTC7h 30m
2026-06-28 AFR359P - Jun 28, 03:55 UTCJun 28, 10:39 UTC6h 45m
2026-06-27 AFR358P - Jun 27, 17:04 UTCJun 28, 00:25 UTC7h 20m
2026-06-26 AFR501 - Jun 26, 17:25 UTCJun 27, 11:09 UTC17h 45m
2026-06-26 AFR501 - Jun 26, 10:20 UTCJun 27, 10:14 UTC23h 55m
2026-06-26 AFR500 - Jun 26, 09:10 UTCJun 27, 03:04 UTC17h 55m
2026-06-25 AFR283 - Jun 25, 21:20 UTCJun 26, 05:24 UTC8h 5m
2026-06-25 AFR284 - Jun 25, 10:25 UTCJun 25, 18:00 UTC7h 35m
2026-06-24 AFR989 - Jun 24, 01:49 UTCJun 24, 03:44 UTC1h 55m
2026-06-23 AFR988 - Jun 23, 16:09 UTCJun 23, 16:24 UTC15m
2026-06-23 AFR988 - Jun 23, 09:45 UTCJun 23, 11:54 UTC2h 10m
2026-06-22 AFR805 - Jun 22, 15:20 UTCJun 23, 06:19 UTC15h 0m
2026-06-22 AFR89U MSP → CDG Jun 22, 03:35 UTCJun 22, 11:04 UTC7h 30m
2026-06-21 AFR088 CDG → SFO Jun 21, 16:30 UTCJun 22, 00:50 UTC8h 20m

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?
Yes. Mode-S 3949F9 is currently airborne.
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, AFR378E, AFR988, AFR501, AFR377.