sensors Mode-S transponder

ADFEC9

ICAO 24-bit transponder address

Currently assigned to 84-00182 · Beech C-12U Huron

Hex
ADFEC9
Octal
53377311
Decimal
11,402,953
Tail
84-00182
Type
BE20
No current signal · last broadcast 1d ago
Flights observed
5
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S ADFEC9.

Callsign history 1 distinct

Callsign Airline Flights Last seen
PAT454 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 PAT454 - Apr 13, 21:50 UTCApr 13, 23:45 UTC1h 55m
2026-04-13 PAT454 - Apr 13, 19:50 UTCApr 13, 21:15 UTC1h 25m
2026-04-13 PAT454 - Apr 13, 18:50 UTCApr 13, 20:10 UTC1h 20m
2026-04-13 PAT454 - Apr 13, 16:30 UTCApr 13, 17:40 UTC1h 10m
2026-04-13 PAT454 - Apr 13, 12:55 UTCApr 13, 15:30 UTC2h 35m

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 84-00182 page for operator, model, and routing details .

Mode-S ADFEC9 frequently asked

What is Mode-S code ADFEC9?
ADFEC9 is an ICAO 24-bit transponder address. Assigned to 84-00182.
Is ADFEC9 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 ADFEC9, octal 53377311, decimal 11,402,953.
What flights does ADFEC9 operate?
Mode-S ADFEC9 has broadcast 1 distinct callsign, including PAT454.