sensors Mode-S transponder

AAF4EE

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N805FA · PILATUS PC-12 · operated by MICHAEL KENNEDY

Hex
AAF4EE
Octal
52572356
Decimal
11,203,822
Country
US
Tail
N805FA
Type
PC12
No current signal · last broadcast 1d ago
Flights observed
8
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AAF4EE.

Country allocation

The ICAO 24-bit address AAF4EE falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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
N805FA - 8 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 N805FA - Apr 13, 22:25 UTCApr 13, 23:30 UTC1h 5m
2026-04-13 N805FA - Apr 13, 20:35 UTCApr 13, 21:45 UTC1h 10m
2026-04-13 N805FA - Apr 13, 19:50 UTCApr 13, 20:00 UTC10m
2026-04-13 N805FA - Apr 13, 19:30 UTCApr 13, 20:00 UTC30m
2026-04-13 N805FA - Apr 13, 18:00 UTCApr 13, 18:30 UTC30m
2026-04-13 N805FA - Apr 13, 09:45 UTCApr 13, 09:55 UTC10m
2026-04-13 N805FA - Apr 13, 08:55 UTCApr 13, 09:30 UTC35m
2026-04-13 N805FA - Apr 13, 07:00 UTCApr 13, 07:40 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 N805FA page for operator, model, and routing details .

Mode-S AAF4EE frequently asked

What is Mode-S code AAF4EE?
AAF4EE is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N805FA.
Where is Mode-S AAF4EE registered?
Mode-S code AAF4EE is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is AAF4EE broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AAF4EE, octal 52572356, decimal 11,203,822.
What flights does AAF4EE operate?
Mode-S AAF4EE has broadcast 1 distinct callsign, including N805FA.