Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE4A18

ICAO 24-bit transponder address

Currently assigned to 166143 · Raytheon T-6B Texan II

Hex
AE4A18
Octal
53445030
Decimal
11,422,232
Tail
166143
Type
TEX2
No current signal · last broadcast 1d ago
Flights observed
4
Distinct callsigns
2
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE4A18.

Callsign history 2 distinct

Callsign Airline Flights Last seen
RNGR734 - 2 2026-04-17
BOMR734 - 2 2026-04-15

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-17 RNGR734 - Apr 17, 16:25 UTCApr 17, 16:35 UTC10m
2026-04-17 RNGR734 - Apr 17, 15:20 UTCApr 17, 15:50 UTC30m
2026-04-15 BOMR734 - Apr 15, 23:10 UTCApr 15, 23:35 UTC25m
2026-04-15 BOMR734 - Apr 15, 22:00 UTCApr 15, 23:00 UTC1h 0m

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 166143 page for operator, model, and routing details .

Mode-S AE4A18 frequently asked

What is Mode-S code AE4A18?
AE4A18 is an ICAO 24-bit transponder address. Assigned to 166143.
Is AE4A18 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 AE4A18, octal 53445030, decimal 11,422,232.
What flights does AE4A18 operate?
Mode-S AE4A18 has broadcast 2 distinct callsigns, including RNGR734, BOMR734.