Apparatus

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sensors Mode-S transponder

393231

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-GMRR · ROBIN DR-400

Hex
393231
Octal
16231061
Decimal
3,748,401
Country
FR
Tail
F-GMRR
Type
DR40
Broadcasting now · callsign FGMRR · 3,100 ft
Flights observed
22
Distinct callsigns
1
Country
FR
Last broadcast
1h ago

Current position

393231 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 393231 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 1 distinct

Callsign Airline Flights Last seen
FGMRR - 22 2026-04-18

Recent flights last 22

DateFlightRouteTakeoffLandingDuration
2026-04-18 FGMRR - Apr 18, 15:00 UTCApr 18, 15:50 UTC50m
2026-04-18 FGMRR - Apr 18, 12:15 UTCApr 18, 12:35 UTC20m
2026-04-18 FGMRR - Apr 18, 10:05 UTCApr 18, 10:40 UTC35m
2026-04-18 FGMRR - Apr 18, 07:25 UTCApr 18, 07:55 UTC30m
2026-04-17 FGMRR - Apr 17, 17:25 UTCApr 17, 17:45 UTC20m
2026-04-17 FGMRR - Apr 17, 16:55 UTCApr 17, 17:15 UTC20m
2026-04-17 FGMRR - Apr 17, 15:20 UTCApr 17, 15:40 UTC20m
2026-04-17 FGMRR - Apr 17, 14:45 UTCApr 17, 15:15 UTC29m
2026-04-17 FGMRR - Apr 17, 13:45 UTCApr 17, 14:05 UTC20m
2026-04-17 FGMRR - Apr 17, 12:10 UTCApr 17, 12:40 UTC30m
2026-04-17 FGMRR - Apr 17, 09:20 UTCApr 17, 09:30 UTC10m
2026-04-17 FGMRR - Apr 17, 09:05 UTCApr 17, 09:15 UTC10m
2026-04-16 FGMRR - Apr 16, 17:20 UTCApr 16, 18:00 UTC40m
2026-04-16 FGMRR - Apr 16, 15:20 UTCApr 16, 15:50 UTC30m
2026-04-16 FGMRR - Apr 16, 13:50 UTCApr 16, 14:25 UTC35m
2026-04-16 FGMRR - Apr 16, 09:10 UTCApr 16, 09:50 UTC40m
2026-04-16 FGMRR - Apr 16, 07:49 UTCApr 16, 08:30 UTC40m
2026-04-15 FGMRR - Apr 15, 17:05 UTCApr 15, 17:40 UTC35m
2026-04-15 FGMRR - Apr 15, 13:10 UTCApr 15, 13:35 UTC25m
2026-04-15 FGMRR - Apr 15, 11:30 UTCApr 15, 12:25 UTC55m
2026-04-15 FGMRR - Apr 15, 09:15 UTCApr 15, 09:45 UTC30m
2026-04-15 FGMRR - Apr 15, 08:15 UTCApr 15, 08:45 UTC30m

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

Mode-S 393231 frequently asked

What is Mode-S code 393231?
393231 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-GMRR.
Where is Mode-S 393231 registered?
Mode-S code 393231 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 393231 broadcasting right now?
Yes. Mode-S 393231 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 393231, octal 16231061, decimal 3,748,401.
What flights does 393231 operate?
Mode-S 393231 has broadcast 1 distinct callsign, including FGMRR.