sensors Mode-S transponder

3949ED

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSPN · BOEING 777-200

Hex
3949ED
Octal
16244755
Decimal
3,754,477
Country
FR
Tail
F-GSPN
Type
B772
No current signal · last broadcast 3h ago
Flights observed
98
Distinct callsigns
20
Country
FR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 3949ED.

Country allocation

The ICAO 24-bit address 3949ED 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
AFR111 Air France 12 2026-05-21
AFR356G Air France 7 2026-05-29
AFR116 Air France 7 2026-05-20
AFR357E Air France 6 2026-05-29
AFR501 Air France 5 2026-05-13
AFR465 Air France 5 2026-05-25
AFR935 Air France 4 2026-05-23
AFR89U Air France 3 2026-05-19
AFR828 Air France 3 2026-05-11
AFR805 Air France 3 2026-04-18
AFR500 Air France 3 2026-05-12
AFR088 Air France 3 2026-05-18
AFR902 Air France 2 2026-05-10
AFR837 Air France 2 2026-04-28
AFR829 Air France 2 2026-05-12
AFR804 - 2 2026-04-17
AFR378E Air France 2 2026-05-23
AFR377 Air France 2 2026-05-24
AFR345M Air France 2 2026-05-06
AFR218 Air France 2 2026-05-03

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 AFR357E YYZ → CDG May 29, 22:20 UTCMay 30, 05:10 UTC6h 50m
2026-05-29 AFR356G CDG → YYZ May 29, 12:00 UTCMay 29, 19:25 UTC7h 26m
2026-05-29 AFR53M IAD → CDG May 29, 02:00 UTCMay 29, 08:55 UTC6h 55m
2026-05-28 AFR52X CDG → IAD May 28, 15:40 UTCMay 28, 23:20 UTC7h 40m
2026-05-27 AFR149 LOS → CDG May 27, 14:30 UTCMay 28, 05:40 UTC15h 10m
2026-05-26 AFR763 PTP → CDG May 26, 14:24 UTCMay 27, 09:05 UTC18h 41m
2026-05-25 AFR465 SSA → CDG May 25, 17:20 UTCMay 26, 06:20 UTC12h 59m
2026-05-25 AFR465 SSA → CDG May 25, 09:25 UTCMay 26, 06:20 UTC20h 55m
2026-05-24 AFR357E YYZ → CDG May 24, 23:00 UTCMay 25, 05:10 UTC6h 10m
2026-05-24 AFR356G CDG → YYZ May 24, 12:15 UTCMay 24, 19:45 UTC7h 30m
2026-05-24 AFR377 DTW → CDG May 24, 01:25 UTCMay 24, 08:40 UTC7h 15m
2026-05-23 AFR378E CDG → DTW May 23, 14:15 UTCMay 23, 22:20 UTC8h 5m
2026-05-23 AFR935 TNR → CDG May 23, 04:35 UTCMay 23, 08:35 UTC4h 0m
2026-05-22 AFR935 TNR → CDG May 22, 11:20 UTCMay 23, 08:35 UTC21h 15m
2026-05-22 AFR935 TNR → CDG May 22, 09:20 UTCMay 23, 08:35 UTC23h 14m
2026-05-22 AFR935 TNR → CDG May 22, 09:00 UTCMay 23, 07:15 UTC22h 15m
2026-05-21 AFR111 PVG → CDG May 21, 15:15 UTCMay 22, 03:30 UTC12h 15m
2026-05-21 AFR111 PVG → CDG May 21, 08:05 UTCMay 22, 03:30 UTC19h 25m
2026-05-21 AFR111 PVG → CDG May 21, 01:55 UTCMay 22, 01:15 UTC23h 20m
2026-05-20 AFR116 CDG → PVG May 20, 23:20 UTCMay 21, 23:15 UTC23h 55m
2026-05-20 AFR116 CDG → PVG May 20, 22:00 UTCMay 21, 15:40 UTC17h 40m
2026-05-19 AFR357E YYZ → CDG May 19, 23:50 UTCMay 20, 06:40 UTC6h 51m
2026-05-19 AFR356G CDG → YYZ May 19, 13:45 UTCMay 19, 21:20 UTC7h 35m
2026-05-19 AFR89U MSP → CDG May 19, 02:55 UTCMay 19, 10:20 UTC7h 25m
2026-05-18 AFR088 CDG → SFO May 18, 14:30 UTCMay 18, 23:15 UTC8h 44m
2026-05-16 AFR971 LAD → CDG May 16, 23:00 UTCMay 17, 08:10 UTC9h 10m
2026-05-16 AFR972 CDG → LAD May 16, 12:21 UTCMay 16, 20:10 UTC7h 50m
2026-05-16 AFR89U MSP → CDG May 16, 01:45 UTCMay 16, 09:16 UTC7h 31m
2026-05-15 AFR088 CDG → SFO May 15, 14:50 UTCMay 15, 23:20 UTC8h 30m
2026-05-15 AFR89U MSP → CDG May 15, 01:35 UTCMay 15, 09:15 UTC7h 40m
2026-05-14 AFR088 CDG → SFO May 14, 14:20 UTCMay 14, 22:50 UTC8h 30m
2026-05-14 AFR009 - May 14, 04:10 UTCMay 14, 10:40 UTC6h 30m
2026-05-13 AFR010 CDG → JFK May 13, 16:50 UTCMay 14, 00:25 UTC7h 35m
2026-05-13 AFR501 ABJ → ACC May 13, 00:25 UTCMay 13, 10:50 UTC10h 25m
2026-05-12 AFR500 ACC → ABJ May 12, 08:40 UTCMay 12, 20:01 UTC11h 20m
2026-05-12 AFR829 COF → COF May 12, 02:45 UTCMay 12, 05:10 UTC2h 25m
2026-05-11 AFR828 CDG → NBO May 11, 17:25 UTCMay 11, 17:35 UTC10m
2026-05-11 AFR828 CDG → NBO May 11, 09:45 UTCMay 11, 12:35 UTC2h 50m
2026-05-10 AFR902 CDG → NSI May 10, 22:09 UTCMay 11, 05:15 UTC7h 5m
2026-05-10 AFR902 CDG → NSI May 10, 11:15 UTCMay 10, 12:54 UTC1h 40m
2026-05-09 AFR1U JFK → CDG May 9, 20:49 UTCMay 10, 03:40 UTC6h 50m
2026-05-09 AFR2N CDG → JFK May 9, 07:05 UTCMay 9, 14:20 UTC7h 15m
2026-05-08 AFR187 CDG → LAS May 8, 00:05 UTCMay 8, 14:10 UTC14h 5m
2026-05-07 AFR186 LAS → CDG May 7, 08:20 UTCMay 7, 21:05 UTC12h 45m
2026-05-07 AFR829 COF → COF May 7, 02:05 UTCMay 7, 05:20 UTC3h 15m
2026-05-06 AFR828 CDG → NBO May 6, 09:40 UTCMay 6, 12:35 UTC2h 55m
2026-05-06 AFR345M YUL → CDG May 6, 04:10 UTCMay 6, 05:55 UTC1h 45m
2026-05-05 AFR345M YUL → CDG May 5, 23:40 UTCMay 6, 00:40 UTC1h 0m
2026-05-05 AFR344 CDG → YUL May 5, 12:20 UTCMay 5, 19:20 UTC7h 0m
2026-05-05 AFR377 DTW → CDG May 5, 01:40 UTCMay 5, 09:00 UTC7h 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-GSPN page for operator, model, and routing details .

Mode-S 3949ED frequently asked

What is Mode-S code 3949ED?
3949ED is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSPN.
Where is Mode-S 3949ED registered?
Mode-S code 3949ED is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3949ED broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3949ED, octal 16244755, decimal 3,754,477.
What flights does 3949ED operate?
Mode-S 3949ED has broadcast 20 distinct callsigns, including AFR111, AFR356G, AFR116, AFR357E, AFR501.