sensors Mode-S transponder

A117FC

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N17MW · operated by WIECHMAN MATTHEW T

Hex
A117FC
Octal
50213774
Decimal
10,557,436
Country
US
Tail
N17MW
No current signal · last broadcast 2h ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S A117FC.

Country allocation

The ICAO 24-bit address A117FC 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
N17MW - 5 2026-04-29

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-29 N17MW - Apr 29, 20:25 UTCApr 29, 21:00 UTC35m
2026-04-28 N17MW - Apr 28, 19:20 UTCApr 28, 20:05 UTC45m
2026-04-25 N17MW - Apr 25, 19:15 UTCApr 25, 20:15 UTC1h 0m
2026-04-24 N17MW - Apr 24, 17:50 UTCApr 24, 18:35 UTC45m
2026-04-24 N17MW - Apr 24, 15:20 UTCApr 24, 15:50 UTC30m

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 N17MW page for operator, model, and routing details .

Mode-S A117FC frequently asked

What is Mode-S code A117FC?
A117FC is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N17MW.
Where is Mode-S A117FC registered?
Mode-S code A117FC 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 A117FC broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A117FC, octal 50213774, decimal 10,557,436.
What flights does A117FC operate?
Mode-S A117FC has broadcast 1 distinct callsign, including N17MW.