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sensors Mode-S transponder

398438

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HBBY · TECNAM P-2002 Sierra

Hex
398438
Octal
16302070
Decimal
3,769,400
Country
FR
Tail
F-HBBY
Type
SIRA
No current signal · last broadcast 9h ago
Flights observed
153
Distinct callsigns
1
Country
FR
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 398438.

Country allocation

The ICAO 24-bit address 398438 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
FHBBY - 153 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 FHBBY - Jul 17, 16:55 UTCJul 17, 17:20 UTC25m
2026-07-15 FHBBY - Jul 15, 09:20 UTCJul 15, 09:45 UTC25m
2026-07-14 FHBBY - Jul 14, 17:40 UTCJul 14, 19:20 UTC1h 40m
2026-07-14 FHBBY - Jul 14, 15:30 UTCJul 14, 15:45 UTC15m
2026-07-14 FHBBY - Jul 14, 13:40 UTCJul 14, 14:55 UTC1h 15m
2026-07-13 FHBBY - Jul 13, 18:10 UTCJul 13, 18:40 UTC30m
2026-07-13 FHBBY - Jul 13, 07:45 UTCJul 13, 09:00 UTC1h 15m
2026-07-12 FHBBY - Jul 12, 07:20 UTCJul 12, 08:50 UTC1h 30m
2026-07-12 FHBBY - Jul 12, 04:10 UTCJul 12, 05:25 UTC1h 15m
2026-07-11 FHBBY - Jul 11, 15:00 UTCJul 11, 15:20 UTC20m
2026-07-09 FHBBY - Jul 9, 16:00 UTCJul 9, 16:55 UTC55m
2026-07-09 FHBBY - Jul 9, 09:05 UTCJul 9, 10:20 UTC1h 15m
2026-07-08 FHBBY - Jul 8, 17:45 UTCJul 8, 18:10 UTC25m
2026-07-08 FHBBY - Jul 8, 15:10 UTCJul 8, 15:50 UTC40m
2026-07-07 FHBBY - Jul 7, 19:10 UTCJul 7, 19:45 UTC35m
2026-07-07 FHBBY - Jul 7, 16:35 UTCJul 7, 18:25 UTC1h 50m
2026-07-06 FHBBY - Jul 6, 17:35 UTCJul 6, 18:05 UTC30m
2026-07-05 FHBBY - Jul 5, 13:30 UTCJul 5, 16:10 UTC2h 40m
2026-07-05 FHBBY - Jul 5, 09:10 UTCJul 5, 10:40 UTC1h 30m
2026-07-04 FHBBY - Jul 4, 19:05 UTCJul 4, 19:25 UTC20m
2026-07-04 FHBBY - Jul 4, 17:35 UTCJul 4, 18:15 UTC40m
2026-07-04 FHBBY - Jul 4, 16:35 UTCJul 4, 16:55 UTC20m
2026-07-04 FHBBY - Jul 4, 14:40 UTCJul 4, 16:00 UTC1h 20m
2026-07-04 FHBBY - Jul 4, 13:05 UTCJul 4, 13:55 UTC50m
2026-07-04 FHBBY - Jul 4, 10:25 UTCJul 4, 11:20 UTC55m
2026-07-04 FHBBY - Jul 4, 09:35 UTCJul 4, 09:55 UTC20m
2026-07-04 FHBBY - Jul 4, 07:20 UTCJul 4, 08:40 UTC1h 20m
2026-07-03 FHBBY - Jul 3, 17:15 UTCJul 3, 17:40 UTC25m
2026-07-03 FHBBY - Jul 3, 16:10 UTCJul 3, 16:40 UTC30m
2026-07-03 FHBBY - Jul 3, 14:30 UTCJul 3, 15:05 UTC35m
2026-07-03 FHBBY - Jul 3, 12:40 UTCJul 3, 14:00 UTC1h 20m
2026-07-03 FHBBY - Jul 3, 11:10 UTCJul 3, 12:05 UTC55m
2026-06-29 FHBBY - Jun 29, 18:39 UTCJun 29, 19:09 UTC30m
2026-06-29 FHBBY - Jun 29, 16:55 UTCJun 29, 17:49 UTC55m
2026-06-28 FHBBY - Jun 28, 17:00 UTCJun 28, 17:25 UTC25m
2026-06-28 FHBBY - Jun 28, 15:44 UTCJun 28, 16:19 UTC35m
2026-06-28 FHBBY - Jun 28, 12:29 UTCJun 28, 13:00 UTC30m
2026-06-28 FHBBY - Jun 28, 11:19 UTCJun 28, 11:55 UTC35m
2026-06-27 FHBBY - Jun 27, 10:50 UTCJun 27, 12:04 UTC1h 15m
2026-06-24 FHBBY - Jun 24, 19:24 UTCJun 24, 19:39 UTC15m
2026-06-19 FHBBY - Jun 19, 06:59 UTCJun 19, 07:29 UTC30m
2026-06-15 FHBBY - Jun 15, 10:20 UTCJun 15, 11:15 UTC55m
2026-06-15 FHBBY - Jun 15, 09:05 UTCJun 15, 10:15 UTC1h 10m
2026-06-13 FHBBY - Jun 13, 13:35 UTCJun 13, 15:30 UTC1h 55m
2026-06-13 FHBBY - Jun 13, 11:20 UTCJun 13, 12:15 UTC55m
2026-06-12 FHBBY - Jun 12, 17:10 UTCJun 12, 17:50 UTC40m
2026-06-12 FHBBY - Jun 12, 15:10 UTCJun 12, 15:35 UTC25m
2026-06-12 FHBBY - Jun 12, 14:01 UTCJun 12, 14:30 UTC30m
2026-06-12 FHBBY - Jun 12, 10:50 UTCJun 12, 12:50 UTC2h 0m
2026-06-12 FHBBY - Jun 12, 07:35 UTCJun 12, 07:55 UTC20m

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

Mode-S 398438 frequently asked

What is Mode-S code 398438?
398438 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HBBY.
Where is Mode-S 398438 registered?
Mode-S code 398438 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 398438 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 398438, octal 16302070, decimal 3,769,400.
What flights does 398438 operate?
Mode-S 398438 has broadcast 1 distinct callsign, including FHBBY.