sensors Mode-S transponder

A5ED02

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N481HC · BEECH 200 Super King Air · operated by IHC HEALTH SERVICES INC

Hex
A5ED02
Octal
51366402
Decimal
10,874,114
Country
US
Tail
N481HC
Type
BE20
No current signal · last broadcast 18h ago
Flights observed
7
Distinct callsigns
1
Country
US
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S A5ED02.

Country allocation

The ICAO 24-bit address A5ED02 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
LN481HC - 7 2026-04-14

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 LN481HC - Apr 14, 07:20 UTCApr 14, 07:45 UTC25m
2026-04-14 LN481HC - Apr 14, 05:20 UTCApr 14, 05:35 UTC15m
2026-04-13 LN481HC - Apr 13, 22:50 UTCApr 13, 23:30 UTC40m
2026-04-13 LN481HC - Apr 13, 21:45 UTCApr 13, 22:15 UTC30m
2026-04-13 LN481HC - Apr 13, 02:40 UTCApr 13, 03:10 UTC30m
2026-04-13 LN481HC - Apr 13, 00:20 UTCApr 13, 01:10 UTC50m
2026-04-12 LN481HC - Apr 12, 23:55 UTCApr 13, 01:10 UTC1h 15m

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 N481HC page for operator, model, and routing details .

Mode-S A5ED02 frequently asked

What is Mode-S code A5ED02?
A5ED02 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N481HC.
Where is Mode-S A5ED02 registered?
Mode-S code A5ED02 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 A5ED02 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A5ED02, octal 51366402, decimal 10,874,114.
What flights does A5ED02 operate?
Mode-S A5ED02 has broadcast 1 distinct callsign, including LN481HC.