sensors Mode-S transponder

ADFE54

ICAO 24-bit transponder address

Currently assigned to 94-00325 · Beech C-12V Huron

Hex
ADFE54
Octal
53377124
Decimal
11,402,836
Tail
94-00325
Type
BE20
No current signal · last broadcast 1d ago
Flights observed
3
Distinct callsigns
2
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ADFE54.

Callsign history 2 distinct

Callsign Airline Flights Last seen
PAT479 - 2 2026-04-13
PAT477 - 1 2026-04-12

Recent flights last 3

DateFlightRouteTakeoffLandingDuration
2026-04-13 PAT479 - Apr 13, 16:55 UTCApr 13, 18:25 UTC1h 30m
2026-04-13 PAT479 - Apr 13, 12:55 UTCApr 13, 14:40 UTC1h 45m
2026-04-12 PAT477 - Apr 12, 17:15 UTCApr 12, 19:00 UTC1h 45m

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 94-00325 page for operator, model, and routing details .

Mode-S ADFE54 frequently asked

What is Mode-S code ADFE54?
ADFE54 is an ICAO 24-bit transponder address. Assigned to 94-00325.
Is ADFE54 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 ADFE54, octal 53377124, decimal 11,402,836.
What flights does ADFE54 operate?
Mode-S ADFE54 has broadcast 2 distinct callsigns, including PAT479, PAT477.