Apparatus

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sensors Mode-S transponder

398239

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HARZ

Hex
398239
Octal
16301071
Decimal
3,768,889
Country
FR
Tail
F-HARZ
Type
PIVI
No current signal · last broadcast 1d ago
Flights observed
106
Distinct callsigns
1
Country
FR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 398239.

Country allocation

The ICAO 24-bit address 398239 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
FHARZ - 106 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 FHARZ - Jul 16, 16:55 UTCJul 16, 17:05 UTC10m
2026-07-16 FHARZ - Jul 16, 14:55 UTCJul 16, 15:40 UTC45m
2026-07-15 FHARZ - Jul 15, 07:20 UTCJul 15, 07:45 UTC25m
2026-07-13 FHARZ - Jul 13, 14:15 UTCJul 13, 15:15 UTC1h 0m
2026-07-13 FHARZ - Jul 13, 10:45 UTCJul 13, 11:05 UTC20m
2026-07-13 FHARZ - Jul 13, 09:45 UTCJul 13, 10:00 UTC15m
2026-07-12 FHARZ - Jul 12, 15:15 UTCJul 12, 15:45 UTC30m
2026-07-11 FHARZ - Jul 11, 14:10 UTCJul 11, 15:00 UTC50m
2026-07-11 FHARZ - Jul 11, 09:50 UTCJul 11, 10:10 UTC20m
2026-07-11 FHARZ - Jul 11, 08:05 UTCJul 11, 08:25 UTC20m
2026-07-09 FHARZ - Jul 9, 13:20 UTCJul 9, 14:45 UTC1h 25m
2026-07-08 FHARZ - Jul 8, 13:35 UTCJul 8, 14:45 UTC1h 10m
2026-07-08 FHARZ - Jul 8, 10:30 UTCJul 8, 11:45 UTC1h 15m
2026-07-08 FHARZ - Jul 8, 08:15 UTCJul 8, 09:35 UTC1h 20m
2026-07-07 FHARZ - Jul 7, 11:55 UTCJul 7, 12:10 UTC15m
2026-07-07 FHARZ - Jul 7, 10:10 UTCJul 7, 11:20 UTC1h 10m
2026-07-06 FHARZ - Jul 6, 18:20 UTCJul 6, 18:50 UTC30m
2026-07-06 FHARZ - Jul 6, 15:55 UTCJul 6, 16:45 UTC50m
2026-07-06 FHARZ - Jul 6, 08:40 UTCJul 6, 09:55 UTC1h 15m
2026-07-05 FHARZ - Jul 5, 15:20 UTCJul 5, 15:45 UTC25m
2026-07-05 FHARZ - Jul 5, 12:45 UTCJul 5, 14:00 UTC1h 15m
2026-07-05 FHARZ - Jul 5, 09:05 UTCJul 5, 09:45 UTC40m
2026-07-04 FHARZ - Jul 4, 11:05 UTCJul 4, 11:55 UTC50m
2026-07-04 FHARZ - Jul 4, 08:55 UTCJul 4, 09:15 UTC20m
2026-07-04 FHARZ - Jul 4, 07:55 UTCJul 4, 08:20 UTC25m
2026-07-01 FHARZ - Jul 1, 14:20 UTCJul 1, 15:35 UTC1h 15m
2026-07-01 FHARZ - Jul 1, 07:35 UTCJul 1, 08:45 UTC1h 10m
2026-06-27 FHARZ - Jun 27, 12:45 UTCJun 27, 13:49 UTC1h 5m
2026-06-27 FHARZ - Jun 27, 09:24 UTCJun 27, 09:40 UTC15m
2026-06-23 FHARZ - Jun 23, 10:29 UTCJun 23, 11:10 UTC40m
2026-06-23 FHARZ - Jun 23, 08:25 UTCJun 23, 08:59 UTC35m
2026-06-21 FHARZ - Jun 21, 09:35 UTCJun 21, 10:34 UTC1h 0m
2026-06-20 FHARZ - Jun 20, 15:24 UTCJun 20, 15:44 UTC20m
2026-06-20 FHARZ - Jun 20, 12:24 UTCJun 20, 12:54 UTC30m
2026-06-20 FHARZ - Jun 20, 08:44 UTCJun 20, 09:19 UTC35m
2026-06-19 FHARZ - Jun 19, 09:44 UTCJun 19, 10:39 UTC55m
2026-06-18 FHARZ - Jun 18, 13:15 UTCJun 18, 15:25 UTC2h 10m
2026-06-18 FHARZ - Jun 18, 10:55 UTCJun 18, 11:20 UTC25m
2026-06-18 FHARZ - Jun 18, 08:55 UTCJun 18, 10:25 UTC1h 30m
2026-06-17 FHARZ - Jun 17, 16:25 UTCJun 17, 16:50 UTC25m
2026-06-17 FHARZ - Jun 17, 08:15 UTCJun 17, 09:45 UTC1h 30m
2026-06-16 FHARZ - Jun 16, 14:20 UTCJun 16, 16:25 UTC2h 5m
2026-06-13 FHARZ - Jun 13, 10:05 UTCJun 13, 10:30 UTC25m
2026-06-12 FHARZ - Jun 12, 16:05 UTCJun 12, 16:20 UTC15m
2026-06-12 FHARZ - Jun 12, 15:25 UTCJun 12, 15:45 UTC20m
2026-06-12 FHARZ - Jun 12, 12:50 UTCJun 12, 14:05 UTC1h 15m
2026-06-12 FHARZ - Jun 12, 08:00 UTCJun 12, 09:00 UTC1h 0m
2026-06-07 FHARZ - Jun 7, 13:40 UTCJun 7, 13:50 UTC10m
2026-06-07 FHARZ - Jun 7, 10:35 UTCJun 7, 11:45 UTC1h 10m
2026-06-07 FHARZ - Jun 7, 08:00 UTCJun 7, 09:15 UTC1h 15m

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

Mode-S 398239 frequently asked

What is Mode-S code 398239?
398239 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HARZ.
Where is Mode-S 398239 registered?
Mode-S code 398239 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 398239 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 398239, octal 16301071, decimal 3,768,889.
What flights does 398239 operate?
Mode-S 398239 has broadcast 1 distinct callsign, including FHARZ.