sensors Mode-S transponder

AC24E2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N8817J · PIPER PA-28-140/150/160/180 · operated by MY BIRD IS BIGGER THAN YOURS LLC

Hex
AC24E2
Octal
53022342
Decimal
11,281,634
Country
US
Tail
N8817J
Type
P28A
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AC24E2.

Country allocation

The ICAO 24-bit address AC24E2 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
FTT8 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 FTT8 - Apr 13, 18:25 UTCApr 13, 19:45 UTC1h 20m
2026-04-13 FTT8 - Apr 13, 16:50 UTCApr 13, 17:40 UTC50m
2026-04-13 FTT8 - Apr 13, 14:40 UTCApr 13, 14:50 UTC10m
2026-04-13 FTT8 - Apr 13, 12:25 UTCApr 13, 13:15 UTC50m
2026-04-12 FTT8 - Apr 12, 18:35 UTCApr 12, 19:45 UTC1h 10m

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 N8817J page for operator, model, and routing details .

Mode-S AC24E2 frequently asked

What is Mode-S code AC24E2?
AC24E2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N8817J.
Where is Mode-S AC24E2 registered?
Mode-S code AC24E2 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 AC24E2 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 AC24E2, octal 53022342, decimal 11,281,634.
What flights does AC24E2 operate?
Mode-S AC24E2 has broadcast 1 distinct callsign, including FTT8.