sensors Mode-S transponder

A5EA75

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N480VA · operated by VERTICAL ADVANTAGE HELICOPTERS

Hex
A5EA75
Octal
51365165
Decimal
10,873,461
Country
US
Tail
N480VA
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 A5EA75.

Country allocation

The ICAO 24-bit address A5EA75 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
N480VA - 5 2026-04-23

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-23 N480VA - Apr 23, 19:50 UTCApr 23, 20:55 UTC1h 5m
2026-04-23 N480VA - Apr 23, 18:05 UTCApr 23, 18:50 UTC45m
2026-04-23 N480VA - Apr 23, 14:00 UTCApr 23, 14:25 UTC25m
2026-04-23 N480VA - Apr 23, 12:35 UTCApr 23, 12:50 UTC15m
2026-04-15 N480VA - Apr 15, 13:45 UTCApr 15, 14:55 UTC1h 9m

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 N480VA page for operator, model, and routing details .

Mode-S A5EA75 frequently asked

What is Mode-S code A5EA75?
A5EA75 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N480VA.
Where is Mode-S A5EA75 registered?
Mode-S code A5EA75 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 A5EA75 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 A5EA75, octal 51365165, decimal 10,873,461.
What flights does A5EA75 operate?
Mode-S A5EA75 has broadcast 1 distinct callsign, including N480VA.