sensors Mode-S transponder

AE54E9

ICAO 24-bit transponder address

Currently assigned to 166215 · Raytheon T-6B Texan II

Hex
AE54E9
Octal
53452351
Decimal
11,425,001
Tail
166215
Type
TEX2
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 AE54E9.

Callsign history 1 distinct

Callsign Airline Flights Last seen
RN215 - 5 2026-04-13

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-13 RN215 - Apr 13, 21:20 UTCApr 13, 21:35 UTC15m
2026-04-13 RN215 - Apr 13, 17:45 UTCApr 13, 19:15 UTC1h 30m
2026-04-13 RN215 - Apr 13, 16:15 UTCApr 13, 16:25 UTC10m
2026-04-13 RN215 - Apr 13, 15:50 UTCApr 13, 16:25 UTC35m
2026-04-13 RN215 - Apr 13, 15:00 UTCApr 13, 16:15 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 166215 page for operator, model, and routing details .

Mode-S AE54E9 frequently asked

What is Mode-S code AE54E9?
AE54E9 is an ICAO 24-bit transponder address. Assigned to 166215.
Is AE54E9 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 AE54E9, octal 53452351, decimal 11,425,001.
What flights does AE54E9 operate?
Mode-S AE54E9 has broadcast 1 distinct callsign, including RN215.