sensors Mode-S transponder

39BB23

ICAO 24-bit transponder address · allocated to France

Currently assigned to F-HOZD · AIRBUS A220-300

Hex
39BB23
Octal
16335443
Decimal
3,783,459
Country
FR
Tail
F-HOZD
Type
BCS3
No current signal · last broadcast 12h ago
Flights observed
16
Distinct callsigns
9
Country
FR
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 39BB23.

Country allocation

The ICAO 24-bit address 39BB23 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 9 distinct

Callsign Airline Flights Last seen
AFR49YT - 3 2026-04-13
AFR1889 - 3 2026-04-13
AFR11UW - 3 2026-04-13
AFR13AB Air France 2 2026-04-13
AFR96EU - 1 2026-04-14
AFR87LF - 1 2026-04-13
AFR1610 - 1 2026-04-12
AFR1213 - 1 2026-04-14
AFR1212 - 1 2026-04-14

Recent flights last 16

DateFlightRouteTakeoffLandingDuration
2026-04-14 AFR96EU - Apr 14, 10:55 UTCApr 14, 11:05 UTC10m
2026-04-14 AFR1213 - Apr 14, 08:05 UTCApr 14, 09:05 UTC1h 0m
2026-04-14 AFR1212 CDG → LIN Apr 14, 05:35 UTCApr 14, 06:45 UTC1h 10m
2026-04-13 AFR87LF - Apr 13, 17:35 UTCApr 13, 18:45 UTC1h 10m
2026-04-13 AFR49YT - Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 AFR49YT - Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 AFR49YT - Apr 13, 15:10 UTCApr 13, 16:15 UTC1h 5m
2026-04-13 AFR1889 - Apr 13, 12:20 UTCApr 13, 13:40 UTC1h 20m
2026-04-13 AFR1889 - Apr 13, 11:55 UTCApr 13, 13:40 UTC1h 45m
2026-04-13 AFR1889 - Apr 13, 11:05 UTCApr 13, 12:15 UTC1h 10m
2026-04-13 AFR11UW - Apr 13, 08:20 UTCApr 13, 09:45 UTC1h 25m
2026-04-13 AFR11UW - Apr 13, 07:55 UTCApr 13, 09:45 UTC1h 50m
2026-04-13 AFR11UW - Apr 13, 07:15 UTCApr 13, 08:15 UTC1h 0m
2026-04-13 AFR13AB HAM → CDG Apr 13, 04:20 UTCApr 13, 05:25 UTC1h 5m
2026-04-13 AFR13AB HAM → CDG Apr 13, 04:10 UTCApr 13, 04:15 UTC5m
2026-04-12 AFR1610 - Apr 12, 18:55 UTCApr 12, 20:00 UTC1h 5m

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

Mode-S 39BB23 frequently asked

What is Mode-S code 39BB23?
39BB23 is an ICAO 24-bit transponder address. Allocated to France. Assigned to F-HOZD.
Where is Mode-S 39BB23 registered?
Mode-S code 39BB23 is allocated to France (FR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 39BB23 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 39BB23, octal 16335443, decimal 3,783,459.
What flights does 39BB23 operate?
Mode-S 39BB23 has broadcast 9 distinct callsigns, including AFR49YT, AFR1889, AFR11UW, AFR13AB, AFR96EU.