Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE4A1A

ICAO 24-bit transponder address

Currently assigned to 166145 · Raytheon T-6B Texan II

Hex
AE4A1A
Octal
53445032
Decimal
11,422,234
Tail
166145
Type
TEX2
No current signal · last broadcast 1d ago
Flights observed
2
Distinct callsigns
1
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE4A1A.

Callsign history 1 distinct

Callsign Airline Flights Last seen
RNGR732 - 2 2026-04-13

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-13 RNGR732 - Apr 13, 15:50 UTCApr 13, 16:05 UTC15m
2026-04-13 RNGR732 - Apr 13, 15:25 UTCApr 13, 16:05 UTC40m

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 166145 page for operator, model, and routing details .

Mode-S AE4A1A frequently asked

What is Mode-S code AE4A1A?
AE4A1A is an ICAO 24-bit transponder address. Assigned to 166145.
Is AE4A1A 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 AE4A1A, octal 53445032, decimal 11,422,234.
What flights does AE4A1A operate?
Mode-S AE4A1A has broadcast 1 distinct callsign, including RNGR732.