Apparatus

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sensors Mode-S transponder

3949F7

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPX · BOEING 777-200

Hex
3949F7
Octal
16244767
Decimal
3,754,487
Country
FR
Tail
F-GSPX
Type
B772
No current signal · last broadcast 1h ago
Flights observed
189
Distinct callsigns
20
Country
FR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 3949F7.

Country allocation

The ICAO 24-bit address 3949F7 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 - 17 2026-06-21
AFR217 - 15 2026-07-11
AFR501 - 10 2026-07-13
AFR218 - 10 2026-07-11
AFR877 - 7 2026-07-10
AFR111 Air France 7 2026-05-29
AFR431 - 6 2026-07-03
AFR378E - 6 2026-07-13
AFR377 - 6 2026-07-14
AFR805 - 5 2026-07-03
AFR706 Air France 5 2026-05-10
AFR500 - 5 2026-07-12
AFR934 - 4 2026-06-20
AFR829 - 4 2026-06-29
AFR116 Air France 4 2026-05-28
AFR940 Air France 3 2026-05-16
AFR82M Air France 3 2026-06-02
AFR828 Air France 3 2026-05-20
AFR804 - 3 2026-04-16
AFR705 - 3 2026-06-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 AFR377 - Jul 14, 01:35 UTCJul 14, 03:45 UTC2h 10m
2026-07-13 AFR378E - Jul 13, 14:35 UTCJul 13, 22:20 UTC7h 45m
2026-07-13 AFR501 - Jul 13, 00:30 UTCJul 13, 11:00 UTC10h 30m
2026-07-12 AFR500 - Jul 12, 08:40 UTCJul 12, 20:15 UTC11h 35m
2026-07-11 AFR217 - Jul 11, 20:10 UTCJul 12, 05:05 UTC8h 55m
2026-07-11 AFR218 - Jul 11, 09:45 UTCJul 11, 17:30 UTC7h 45m
2026-07-10 AFR877 - Jul 10, 12:05 UTCJul 11, 06:30 UTC18h 26m
2026-07-10 AFR877 - Jul 10, 09:50 UTCJul 11, 06:30 UTC20h 40m
2026-07-10 AFR877 - Jul 10, 08:45 UTCJul 11, 06:30 UTC21h 45m
2026-07-10 AFR217 - Jul 10, 01:50 UTCJul 10, 05:15 UTC3h 25m
2026-07-09 AFR217 - Jul 9, 20:15 UTCJul 10, 01:40 UTC5h 25m
2026-07-09 AFR218 - Jul 9, 09:25 UTCJul 9, 17:40 UTC8h 15m
2026-07-08 AFR719 - Jul 8, 23:10 UTCJul 9, 04:05 UTC4h 55m
2026-07-08 AFR718 CDG → DSS Jul 8, 15:30 UTCJul 8, 20:30 UTC5h 0m
2026-07-08 AFR443 - Jul 8, 01:40 UTCJul 8, 12:05 UTC10h 25m
2026-07-07 AFR442 CDG → GIG Jul 7, 22:20 UTCJul 7, 22:35 UTC15m
2026-07-07 AFR442 CDG → GIG Jul 7, 11:55 UTCJul 7, 21:35 UTC9h 40m
2026-07-07 AFR377 - Jul 7, 01:35 UTCJul 7, 08:45 UTC7h 10m
2026-07-06 AFR378E - Jul 6, 14:45 UTCJul 6, 22:55 UTC8h 10m
2026-07-06 AFR501 - Jul 6, 08:40 UTCJul 6, 11:05 UTC2h 25m
2026-07-05 AFR501 - Jul 5, 23:20 UTCJul 6, 03:20 UTC4h 0m
2026-07-05 AFR500 - Jul 5, 08:40 UTCJul 5, 20:05 UTC11h 25m
2026-07-04 AFR217 - Jul 4, 20:05 UTCJul 5, 05:10 UTC9h 5m
2026-07-04 AFR218 - Jul 4, 09:30 UTCJul 4, 17:40 UTC8h 10m
2026-07-03 AFR805 - Jul 3, 14:45 UTCJul 4, 05:55 UTC15h 10m
2026-07-03 AFR431 - Jul 3, 01:45 UTCJul 3, 11:35 UTC9h 50m
2026-07-02 AFR430 - Jul 2, 12:10 UTCJul 2, 22:35 UTC10h 25m
2026-07-02 AFR377 - Jul 2, 01:50 UTCJul 2, 08:45 UTC6h 55m
2026-07-01 AFR378E - Jul 1, 14:45 UTCJul 1, 22:55 UTC8h 10m
2026-07-01 AFR501 - Jul 1, 00:50 UTCJul 1, 11:25 UTC10h 35m
2026-06-30 AFR501 - Jun 30, 09:50 UTCJul 1, 09:45 UTC23h 55m
2026-06-30 AFR500 - Jun 30, 09:10 UTCJul 1, 02:45 UTC17h 35m
2026-06-29 AFR829 - Jun 29, 09:50 UTCJun 30, 04:25 UTC18h 36m
2026-06-29 AFR829 - Jun 29, 09:40 UTCJun 30, 04:25 UTC18h 46m
2026-06-28 AFR805 - Jun 28, 14:34 UTCJun 29, 05:45 UTC15h 10m
2026-06-27 AFR149A - Jun 27, 14:49 UTCJun 28, 08:59 UTC18h 10m
2026-06-26 AFR217 - Jun 26, 22:29 UTCJun 27, 07:24 UTC8h 55m
2026-06-26 AFR218 - Jun 26, 11:49 UTCJun 26, 20:10 UTC8h 20m
2026-06-25 AFR217 - Jun 25, 20:25 UTCJun 26, 05:19 UTC8h 55m
2026-06-25 AFR218 - Jun 25, 09:29 UTCJun 25, 17:49 UTC8h 20m
2026-06-24 AFR343 YUL → CDG Jun 24, 21:24 UTCJun 25, 03:29 UTC6h 5m
2026-06-24 AFR342T - Jun 24, 09:19 UTCJun 24, 16:19 UTC7h 0m
2026-06-22 AFR877 JRO → CDG Jun 22, 17:04 UTCJun 23, 10:44 UTC17h 40m
2026-06-22 AFR877 JRO → CDG Jun 22, 12:05 UTCJun 23, 10:44 UTC22h 40m
2026-06-22 AFR877 JRO → CDG Jun 22, 09:49 UTCJun 23, 09:45 UTC23h 55m
2026-06-22 AFR877 JRO → CDG Jun 22, 09:14 UTCJun 23, 07:45 UTC22h 30m
2026-06-21 AFR345M YUL → CDG Jun 21, 23:55 UTCJun 22, 06:10 UTC6h 15m
2026-06-21 AFR344 - Jun 21, 12:04 UTCJun 21, 19:05 UTC7h 0m
2026-06-21 AFR935 - Jun 21, 05:40 UTCJun 21, 08:49 UTC3h 10m
2026-06-20 AFR935 - Jun 20, 09:49 UTCJun 21, 08:49 UTC23h 0m

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

Mode-S 3949F7 frequently asked

What is Mode-S code 3949F7?
3949F7 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPX.
Where is Mode-S 3949F7 registered?
Mode-S code 3949F7 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949F7 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 3949F7, octal 16244767, decimal 3,754,487.
What flights does 3949F7 operate?
Mode-S 3949F7 has broadcast 20 distinct callsigns, including AFR935, AFR217, AFR501, AFR218, AFR877.