sensors Mode-S transponder

39856C

ICAO 24-bit transponder address · allocated to France

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

Hex
39856C
Octal
16302554
Decimal
3,769,708
Country
FR
Tail
F-HBLM
Type
E190
No current signal · last broadcast 17h ago
Flights observed
17
Distinct callsigns
13
Country
FR
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 39856C.

Country allocation

The ICAO 24-bit address 39856C 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 13 distinct

Callsign Airline Flights Last seen
AFR99WB - 2 2026-04-14
AFR7496 - 2 2026-04-13
AFR45PP - 2 2026-04-14
AFR1192 - 2 2026-04-13
AFR91RA - 1 2026-04-13
AFR88NM - 1 2026-04-13
AFR7497 Air France 1 2026-04-14
AFR53SP - 1 2026-04-13
AFR46TD - 1 2026-04-13
AFR41XR - 1 2026-04-13
AFR32VQ - 1 2026-04-12
AFR23CY - 1 2026-04-12
AFR1507 - 1 2026-04-13

Recent flights last 17

DateFlightRouteTakeoffLandingDuration
2026-04-14 AFR45PP - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 AFR45PP - Apr 14, 08:40 UTCApr 14, 09:05 UTC25m
2026-04-14 AFR99WB - Apr 14, 07:10 UTCApr 14, 07:30 UTC20m
2026-04-14 AFR99WB - Apr 14, 06:55 UTCApr 14, 07:10 UTC15m
2026-04-14 AFR7497 PUF → CDG Apr 14, 05:15 UTCApr 14, 06:00 UTC45m
2026-04-13 AFR7496 - Apr 13, 19:45 UTCApr 13, 19:55 UTC10m
2026-04-13 AFR7496 - Apr 13, 18:50 UTCApr 13, 19:55 UTC1h 5m
2026-04-13 AFR88NM - Apr 13, 16:50 UTCApr 13, 17:40 UTC50m
2026-04-13 AFR91RA - Apr 13, 15:00 UTCApr 13, 15:50 UTC50m
2026-04-13 AFR1507 - Apr 13, 12:50 UTCApr 13, 13:35 UTC45m
2026-04-13 AFR46TD - Apr 13, 11:05 UTCApr 13, 11:55 UTC50m
2026-04-13 AFR41XR - Apr 13, 09:00 UTCApr 13, 09:45 UTC45m
2026-04-13 AFR1192 - Apr 13, 07:55 UTCApr 13, 08:05 UTC10m
2026-04-13 AFR1192 - Apr 13, 07:20 UTCApr 13, 08:05 UTC45m
2026-04-13 AFR53SP NUE → CDG Apr 13, 04:40 UTCApr 13, 05:50 UTC1h 10m
2026-04-12 AFR32VQ - Apr 12, 19:25 UTCApr 12, 20:15 UTC50m
2026-04-12 AFR23CY - Apr 12, 17:15 UTCApr 12, 17:55 UTC40m

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

Mode-S 39856C frequently asked

What is Mode-S code 39856C?
39856C is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HBLM.
Where is Mode-S 39856C registered?
Mode-S code 39856C is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39856C broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 39856C, octal 16302554, decimal 3,769,708.
What flights does 39856C operate?
Mode-S 39856C has broadcast 13 distinct callsigns, including AFR99WB, AFR7496, AFR45PP, AFR1192, AFR91RA.