sensors Mode-S transponder

398577

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HBLX · EMBRAER ERJ-190-100

Hex
398577
Octal
16302567
Decimal
3,769,719
Country
FR
Tail
F-HBLX
Type
E190
No current signal · last broadcast 12h ago
Flights observed
11
Distinct callsigns
7
Country
FR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 398577.

Country allocation

The ICAO 24-bit address 398577 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 7 distinct

Callsign Airline Flights Last seen
AFR53PG - 3 2026-04-14
AFR42PR Air France 2 2026-04-13
AFR37VC - 2 2026-04-14
AFR35UN - 1 2026-04-13
AFR19HU - 1 2026-04-13
AFR1486 - 1 2026-04-13
AFR1453 - 1 2026-04-12

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 AFR53PG - Apr 14, 09:10 UTCApr 14, 10:10 UTC1h 0m
2026-04-14 AFR53PG - Apr 14, 08:55 UTCApr 14, 09:05 UTC10m
2026-04-14 AFR37VC - Apr 14, 07:10 UTCApr 14, 07:30 UTC20m
2026-04-14 AFR37VC - Apr 14, 06:15 UTCApr 14, 07:10 UTC55m
2026-04-13 AFR35UN - Apr 13, 19:45 UTCApr 13, 20:10 UTC25m
2026-04-13 AFR19HU EDI → CDG Apr 13, 16:35 UTCApr 13, 18:00 UTC1h 25m
2026-04-13 AFR1486 - Apr 13, 13:50 UTCApr 13, 15:15 UTC1h 25m
2026-04-13 AFR42PR NCL → CDG Apr 13, 11:55 UTCApr 13, 12:05 UTC10m
2026-04-13 AFR42PR NCL → CDG Apr 13, 10:40 UTCApr 13, 12:05 UTC1h 25m
2026-04-13 AFR53PG - Apr 13, 08:40 UTCApr 13, 09:45 UTC1h 5m
2026-04-12 AFR1453 - Apr 12, 17:15 UTCApr 12, 18:00 UTC45m

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

Mode-S 398577 frequently asked

What is Mode-S code 398577?
398577 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HBLX.
Where is Mode-S 398577 registered?
Mode-S code 398577 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 398577 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 398577, octal 16302567, decimal 3,769,719.
What flights does 398577 operate?
Mode-S 398577 has broadcast 7 distinct callsigns, including AFR53PG, AFR42PR, AFR37VC, AFR35UN, AFR19HU.