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sensors Mode-S transponder

3A1E37

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-OHRX · BEECH 1900

Hex
3A1E37
Octal
16417067
Decimal
3,808,823
Country
FR
Tail
F-OHRX
Type
B190
No current signal · last broadcast Jul 21, 05:00 UTC
Flights observed
26
Distinct callsigns
1
Country
FR
Last broadcast
Jul 21, 05:00 UTC

Last known position

Most recent position reported by Mode-S 3A1E37.

Country allocation

The ICAO 24-bit address 3A1E37 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
FOHRX - 26 2026-07-21

Recent flights last 26

DateFlightRouteTakeoffLandingDuration
2026-07-21 FOHRX - Jul 21, 04:40 UTCJul 21, 05:00 UTC20m
2026-07-21 FOHRX - Jul 21, 03:25 UTCJul 21, 03:45 UTC20m
2026-07-20 FOHRX - Jul 20, 03:20 UTCJul 20, 03:50 UTC30m
2026-07-19 FOHRX - Jul 19, 16:20 UTCJul 19, 16:40 UTC20m
2026-07-18 FOHRX - Jul 18, 20:15 UTCJul 18, 21:00 UTC45m
2026-07-18 FOHRX - Jul 18, 17:50 UTCJul 18, 18:30 UTC40m
2026-07-10 FOHRX - Jul 10, 03:00 UTCJul 10, 03:45 UTC45m
2026-07-10 FOHRX - Jul 10, 01:45 UTCJul 10, 02:25 UTC40m
2026-07-07 FOHRX - Jul 7, 06:10 UTCJul 7, 06:35 UTC25m
2026-07-07 FOHRX - Jul 7, 04:35 UTCJul 7, 04:55 UTC20m
2026-07-02 FOHRX - Jul 2, 19:30 UTCJul 2, 19:50 UTC20m
2026-07-02 FOHRX - Jul 2, 18:10 UTCJul 2, 18:30 UTC20m
2026-06-30 FOHRX - Jun 30, 18:35 UTCJun 30, 19:30 UTC55m
2026-06-30 FOHRX - Jun 30, 17:10 UTCJun 30, 17:55 UTC45m
2026-06-28 FOHRX - Jun 28, 00:45 UTCJun 28, 00:59 UTC15m
2026-06-26 FOHRX - Jun 26, 18:29 UTCJun 26, 18:54 UTC25m
2026-06-25 FOHRX - Jun 25, 01:19 UTCJun 25, 01:54 UTC35m
2026-06-21 FOHRX - Jun 21, 16:10 UTCJun 21, 16:39 UTC30m
2026-06-19 FOHRX - Jun 19, 20:14 UTCJun 19, 20:59 UTC45m
2026-04-30 FOHRX - Apr 30, 20:05 UTCApr 30, 20:15 UTC10m
2026-04-23 FOHRX - Apr 23, 01:50 UTCApr 23, 02:25 UTC35m
2026-04-19 FOHRX - Apr 19, 17:40 UTCApr 19, 18:05 UTC25m
2026-04-17 FOHRX - Apr 17, 02:45 UTCApr 17, 02:59 UTC15m
2026-04-14 FOHRX - Apr 14, 23:50 UTCApr 15, 00:05 UTC15m
2026-04-13 FOHRX - Apr 13, 01:25 UTCApr 13, 02:20 UTC55m
2026-04-12 FOHRX - Apr 12, 17:55 UTCApr 12, 18:55 UTC1h 0m

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

Mode-S 3A1E37 frequently asked

What is Mode-S code 3A1E37?
3A1E37 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-OHRX.
Where is Mode-S 3A1E37 registered?
Mode-S code 3A1E37 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3A1E37 broadcasting right now?
No active broadcast right now. Last signal was Jul 21, 05:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3A1E37, octal 16417067, decimal 3,808,823.
What flights does 3A1E37 operate?
Mode-S 3A1E37 has broadcast 1 distinct callsign, including FOHRX.