Apparatus

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sensors Mode-S transponder

39AC8F

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HLEP · EVEKTOR SportStar

Hex
39AC8F
Octal
16326217
Decimal
3,779,727
Country
FR
Tail
F-HLEP
Type
EVSS
No current signal · last broadcast 6h ago
Flights observed
23
Distinct callsigns
1
Country
FR
Last broadcast
6h ago

Last known position

Most recent position reported by Mode-S 39AC8F.

Country allocation

The ICAO 24-bit address 39AC8F 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
FHLEP - 23 2026-04-18

Recent flights last 23

DateFlightRouteTakeoffLandingDuration
2026-04-18 FHLEP - Apr 18, 13:20 UTCApr 18, 14:25 UTC1h 5m
2026-04-18 FHLEP - Apr 18, 10:45 UTCApr 18, 11:10 UTC25m
2026-04-17 FHLEP - Apr 17, 16:25 UTCApr 17, 17:15 UTC50m
2026-04-17 FHLEP - Apr 17, 14:10 UTCApr 17, 14:45 UTC35m
2026-04-17 FHLEP - Apr 17, 09:20 UTCApr 17, 10:10 UTC50m
2026-04-16 FHLEP - Apr 16, 17:15 UTCApr 16, 17:30 UTC15m
2026-04-16 FHLEP - Apr 16, 16:20 UTCApr 16, 17:10 UTC50m
2026-04-16 FHLEP - Apr 16, 13:44 UTCApr 16, 14:55 UTC1h 10m
2026-04-16 FHLEP - Apr 16, 12:05 UTCApr 16, 12:24 UTC20m
2026-04-16 FHLEP - Apr 16, 11:09 UTCApr 16, 11:20 UTC10m
2026-04-16 FHLEP - Apr 16, 09:59 UTCApr 16, 11:04 UTC1h 5m
2026-04-16 FHLEP - Apr 16, 08:00 UTCApr 16, 08:54 UTC55m
2026-04-15 FHLEP - Apr 15, 17:05 UTCApr 15, 18:00 UTC55m
2026-04-15 FHLEP - Apr 15, 14:20 UTCApr 15, 14:30 UTC10m
2026-04-15 FHLEP - Apr 15, 11:40 UTCApr 15, 12:40 UTC1h 0m
2026-04-15 FHLEP - Apr 15, 10:10 UTCApr 15, 10:20 UTC10m
2026-04-15 FHLEP - Apr 15, 09:10 UTCApr 15, 09:30 UTC20m
2026-04-14 FHLEP - Apr 14, 16:50 UTCApr 14, 17:20 UTC30m
2026-04-14 FHLEP - Apr 14, 16:30 UTCApr 14, 16:45 UTC15m
2026-04-14 FHLEP - Apr 14, 13:50 UTCApr 14, 14:35 UTC45m
2026-04-14 FHLEP - Apr 14, 10:10 UTCApr 14, 10:25 UTC15m
2026-04-14 FHLEP - Apr 14, 07:10 UTCApr 14, 07:35 UTC25m
2026-04-14 FHLEP - Apr 14, 06:30 UTCApr 14, 07:10 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-HLEP page for operator, model, and routing details .

Mode-S 39AC8F frequently asked

What is Mode-S code 39AC8F?
39AC8F is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HLEP.
Where is Mode-S 39AC8F registered?
Mode-S code 39AC8F is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39AC8F broadcasting right now?
No active broadcast right now. Last signal was 6h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39AC8F, octal 16326217, decimal 3,779,727.
What flights does 39AC8F operate?
Mode-S 39AC8F has broadcast 1 distinct callsign, including FHLEP.