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sensors Mode-S transponder

399011

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HEAR · DIAMOND DA-40 Club Star

Hex
399011
Octal
16310021
Decimal
3,772,433
Country
FR
Tail
F-HEAR
Type
DA40
No current signal · last broadcast 23h ago
Flights observed
158
Distinct callsigns
1
Country
FR
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S 399011.

Country allocation

The ICAO 24-bit address 399011 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
FHEAR - 158 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 FHEAR - Jul 13, 14:10 UTCJul 13, 15:20 UTC1h 10m
2026-07-13 FHEAR - Jul 13, 12:45 UTCJul 13, 13:30 UTC45m
2026-07-10 FHEAR - Jul 10, 07:10 UTCJul 10, 08:35 UTC1h 25m
2026-07-09 FHEAR - Jul 9, 15:20 UTCJul 9, 16:25 UTC1h 5m
2026-07-09 FHEAR - Jul 9, 13:30 UTCJul 9, 14:45 UTC1h 15m
2026-07-08 FHEAR - Jul 8, 15:45 UTCJul 8, 16:50 UTC1h 5m
2026-07-08 FHEAR - Jul 8, 13:00 UTCJul 8, 13:55 UTC55m
2026-07-08 FHEAR - Jul 8, 08:40 UTCJul 8, 10:10 UTC1h 30m
2026-07-08 FHEAR - Jul 8, 05:40 UTCJul 8, 07:35 UTC1h 55m
2026-07-07 FHEAR - Jul 7, 07:50 UTCJul 7, 08:25 UTC35m
2026-07-06 FHEAR CEQ → CEQ Jul 6, 15:05 UTCJul 6, 15:55 UTC50m
2026-07-04 FHEAR - Jul 4, 13:10 UTCJul 4, 13:45 UTC35m
2026-07-04 FHEAR CEQ → CEQ Jul 4, 09:50 UTCJul 4, 10:30 UTC40m
2026-07-04 FHEAR - Jul 4, 07:40 UTCJul 4, 08:35 UTC55m
2026-07-03 FHEAR - Jul 3, 13:25 UTCJul 3, 13:50 UTC25m
2026-07-03 FHEAR - Jul 3, 12:40 UTCJul 3, 12:55 UTC15m
2026-07-02 FHEAR CEQ → CEQ Jul 2, 14:15 UTCJul 2, 15:00 UTC45m
2026-07-02 FHEAR - Jul 2, 13:05 UTCJul 2, 13:25 UTC20m
2026-07-02 FHEAR - Jul 2, 11:25 UTCJul 2, 12:25 UTC1h 0m
2026-07-01 FHEAR CEQ → CEQ Jul 1, 12:00 UTCJul 1, 12:50 UTC50m
2026-07-01 FHEAR - Jul 1, 09:15 UTCJul 1, 09:45 UTC30m
2026-07-01 FHEAR - Jul 1, 08:25 UTCJul 1, 08:35 UTC10m
2026-06-30 FHEAR - Jun 30, 09:45 UTCJun 30, 10:40 UTC55m
2026-06-30 FHEAR - Jun 30, 06:55 UTCJun 30, 07:15 UTC20m
2026-06-30 FHEAR - Jun 30, 06:25 UTCJun 30, 06:45 UTC20m
2026-06-29 FHEAR CEQ → CEQ Jun 29, 12:45 UTCJun 29, 13:39 UTC55m
2026-06-29 FHEAR - Jun 29, 11:14 UTCJun 29, 11:55 UTC40m
2026-06-27 FHEAR - Jun 27, 11:04 UTCJun 27, 11:30 UTC25m
2026-06-27 FHEAR CEQ → CEQ Jun 27, 08:49 UTCJun 27, 09:44 UTC55m
2026-06-27 FHEAR CEQ → CEQ Jun 27, 07:45 UTCJun 27, 08:14 UTC30m
2026-06-26 FHEAR - Jun 26, 09:30 UTCJun 26, 10:10 UTC40m
2026-06-26 FHEAR CEQ → CEQ Jun 26, 07:30 UTCJun 26, 07:55 UTC25m
2026-06-25 FHEAR - Jun 25, 09:50 UTCJun 25, 10:30 UTC40m
2026-06-25 FHEAR - Jun 25, 06:55 UTCJun 25, 07:59 UTC1h 5m
2026-06-23 FHEAR CEQ → CEQ Jun 23, 09:59 UTCJun 23, 10:49 UTC50m
2026-06-23 FHEAR - Jun 23, 08:00 UTCJun 23, 08:35 UTC35m
2026-06-20 FHEAR - Jun 20, 13:34 UTCJun 20, 14:05 UTC30m
2026-06-20 FHEAR - Jun 20, 07:49 UTCJun 20, 09:24 UTC1h 35m
2026-06-19 FHEAR - Jun 19, 14:09 UTCJun 19, 14:54 UTC45m
2026-06-19 FHEAR - Jun 19, 12:34 UTCJun 19, 13:04 UTC30m
2026-06-19 FHEAR - Jun 19, 07:39 UTCJun 19, 09:04 UTC1h 25m
2026-06-18 FHEAR - Jun 18, 13:45 UTCJun 18, 15:10 UTC1h 25m
2026-06-18 FHEAR - Jun 18, 08:05 UTCJun 18, 09:25 UTC1h 20m
2026-06-17 FHEAR - Jun 17, 15:10 UTCJun 17, 15:55 UTC45m
2026-06-17 FHEAR - Jun 17, 13:40 UTCJun 17, 14:30 UTC50m
2026-06-17 FHEAR - Jun 17, 07:40 UTCJun 17, 08:15 UTC35m
2026-06-16 FHEAR - Jun 16, 11:15 UTCJun 16, 11:55 UTC40m
2026-06-13 FHEAR - Jun 13, 13:10 UTCJun 13, 14:20 UTC1h 10m
2026-06-13 FHEAR - Jun 13, 11:15 UTCJun 13, 11:25 UTC10m
2026-06-13 FHEAR - Jun 13, 10:30 UTCJun 13, 10:40 UTC10m

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

Mode-S 399011 frequently asked

What is Mode-S code 399011?
399011 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HEAR.
Where is Mode-S 399011 registered?
Mode-S code 399011 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 399011 broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 399011, octal 16310021, decimal 3,772,433.
What flights does 399011 operate?
Mode-S 399011 has broadcast 1 distinct callsign, including FHEAR.