sensors Mode-S transponder

394A0B

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GSQL · BOEING 777-300ER

Hex
394A0B
Octal
16245013
Decimal
3,754,507
Country
FR
Tail
F-GSQL
Type
B77W
Broadcasting now · callsign AFR274 · 31,000 ft
Flights observed
7
Distinct callsigns
4
Country
FR
Last broadcast
12h ago

Current position

394A0B is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 394A0B 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 4 distinct

Callsign Airline Flights Last seen
AFR4085 Air France 2 2026-04-13
AFR11E Air France 2 2026-04-14
AFR012 Air France 2 2026-04-13
AFR24X Air France 1 2026-04-12

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 AFR11E JFK → CDG Apr 14, 10:20 UTCApr 14, 11:05 UTC45m
2026-04-14 AFR11E JFK → CDG Apr 14, 05:25 UTCApr 14, 07:00 UTC1h 35m
2026-04-13 AFR012 CDG → JFK Apr 13, 19:50 UTCApr 13, 20:40 UTC50m
2026-04-13 AFR012 CDG → JFK Apr 13, 19:05 UTCApr 13, 20:10 UTC1h 5m
2026-04-13 AFR4085 JFK → CDG Apr 13, 12:20 UTCApr 13, 14:00 UTC1h 40m
2026-04-13 AFR4085 JFK → CDG Apr 13, 04:20 UTCApr 13, 07:10 UTC2h 50m
2026-04-12 AFR24X CDG → LAX Apr 12, 19:35 UTCApr 12, 20:15 UTC40m

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

Mode-S 394A0B frequently asked

What is Mode-S code 394A0B?
394A0B is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GSQL.
Where is Mode-S 394A0B registered?
Mode-S code 394A0B is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 394A0B broadcasting right now?
Yes. Mode-S 394A0B is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 394A0B, octal 16245013, decimal 3,754,507.
What flights does 394A0B operate?
Mode-S 394A0B has broadcast 4 distinct callsigns, including AFR4085, AFR11E, AFR012, AFR24X.