sensors Mode-S transponder

39A407

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HJAH · PILATUS PC-24

Hex
39A407
Octal
16322007
Decimal
3,777,543
Country
FR
Tail
F-HJAH
Type
PC24
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
1
Country
FR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 39A407.

Country allocation

The ICAO 24-bit address 39A407 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
FNY5560 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 FNY5560 - Apr 13, 19:50 UTCApr 13, 20:30 UTC40m
2026-04-13 FNY5560 FAO → LDV Apr 13, 18:00 UTCApr 13, 20:10 UTC2h 10m
2026-04-13 FNY5560 - Apr 13, 08:20 UTCApr 13, 09:15 UTC55m
2026-04-13 FNY5560 - Apr 13, 07:55 UTCApr 13, 09:15 UTC1h 20m
2026-04-13 FNY5560 - Apr 13, 07:20 UTCApr 13, 08:15 UTC55m

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

Mode-S 39A407 frequently asked

What is Mode-S code 39A407?
39A407 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HJAH.
Where is Mode-S 39A407 registered?
Mode-S code 39A407 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39A407 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39A407, octal 16322007, decimal 3,777,543.
What flights does 39A407 operate?
Mode-S 39A407 has broadcast 1 distinct callsign, including FNY5560.