sensors Mode-S transponder

33FC99

ICAO 24-bit transponder address · allocated to Italy

Currently assigned to MM62334 · PIAGGIO P-180 Avanti

Hex
33FC99
Octal
14776231
Decimal
3,407,001
Country
IT
Tail
MM62334
Type
P180
No current signal · last broadcast 14h ago
Flights observed
5
Distinct callsigns
1
Country
IT
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 33FC99.

Country allocation

The ICAO 24-bit address 33FC99 falls within the block assigned to Italy (IT) by ICAO Annex 10, Volume III. Every aircraft registered in Italy 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
IAM2860 - 5 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 IAM2860 - Apr 14, 09:35 UTCApr 14, 10:50 UTC1h 15m
2026-04-14 IAM2860 - Apr 14, 07:10 UTCApr 14, 08:20 UTC1h 10m
2026-04-13 IAM2860 - Apr 13, 09:35 UTCApr 13, 10:40 UTC1h 5m
2026-04-13 IAM2860 - Apr 13, 07:55 UTCApr 13, 08:20 UTC25m
2026-04-13 IAM2860 - Apr 13, 07:30 UTCApr 13, 08:15 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 MM62334 page for operator, model, and routing details .

Mode-S 33FC99 frequently asked

What is Mode-S code 33FC99?
33FC99 is an ICAO 24-bit transponder address. Allocated to Italy. Assigned to MM62334.
Where is Mode-S 33FC99 registered?
Mode-S code 33FC99 is allocated to Italy (IT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 33FC99 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 33FC99, octal 14776231, decimal 3,407,001.
What flights does 33FC99 operate?
Mode-S 33FC99 has broadcast 1 distinct callsign, including IAM2860.