Apparatus

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sensors Mode-S transponder

AE6406

ICAO 24-bit transponder address

Currently assigned to 64-13269 · Northrop T-38A Talon

Hex
AE6406
Octal
53462006
Decimal
11,428,870
Tail
64-13269
Type
T38
No current signal · last broadcast 1d ago
Flights observed
2
Distinct callsigns
2
Country
-
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S AE6406.

Callsign history 2 distinct

Callsign Airline Flights Last seen
RO01 - 1 2026-04-13
FM04 - 1 2026-04-13

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-13 RO01 - Apr 13, 21:10 UTCApr 13, 22:15 UTC1h 5m
2026-04-13 FM04 - Apr 13, 15:20 UTCApr 13, 15:55 UTC35m

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 64-13269 page for operator, model, and routing details .

Mode-S AE6406 frequently asked

What is Mode-S code AE6406?
AE6406 is an ICAO 24-bit transponder address. Assigned to 64-13269.
Is AE6406 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 AE6406, octal 53462006, decimal 11,428,870.
What flights does AE6406 operate?
Mode-S AE6406 has broadcast 2 distinct callsigns, including RO01, FM04.