sensors Mode-S transponder

A84C2A

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N63366 · CESSNA 172 Skyhawk · operated by PURDUE AVIATION LLC

Hex
A84C2A
Octal
52046052
Decimal
11,029,546
Country
US
Tail
N63366
Type
C172
No current signal · last broadcast 23h ago
Flights observed
5
Distinct callsigns
1
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A84C2A.

Country allocation

The ICAO 24-bit address A84C2A 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
N63366 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 N63366 LAF → LAF Apr 13, 23:00 UTCApr 13, 23:35 UTC35m
2026-04-13 N63366 - Apr 13, 19:45 UTCApr 13, 19:55 UTC10m
2026-04-13 N63366 LAF → LAF Apr 13, 18:40 UTCApr 13, 19:55 UTC1h 15m
2026-04-13 N63366 - Apr 13, 13:40 UTCApr 13, 14:45 UTC1h 5m
2026-04-12 N63366 - Apr 12, 17:50 UTCApr 12, 20:00 UTC2h 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 N63366 page for operator, model, and routing details .

Mode-S A84C2A frequently asked

What is Mode-S code A84C2A?
A84C2A is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N63366.
Where is Mode-S A84C2A registered?
Mode-S code A84C2A 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 A84C2A broadcasting right now?
No active broadcast right now. Last signal was 23h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A84C2A, octal 52046052, decimal 11,029,546.
What flights does A84C2A operate?
Mode-S A84C2A has broadcast 1 distinct callsign, including N63366.