Apparatus

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sensors Mode-S transponder

AE63CF

ICAO 24-bit transponder address

Currently assigned to 64-13206 · Northrop T-38A Talon

Hex
AE63CF
Octal
53461717
Decimal
11,428,815
Tail
64-13206
Type
T38
No current signal · last broadcast 10d ago
Flights observed
4
Distinct callsigns
3
Country
-
Last broadcast
10d ago

Last known position

Most recent position reported by Mode-S AE63CF.

Callsign history 3 distinct

Callsign Airline Flights Last seen
RIBEYE2 - 2 2026-04-27
FAST36 - 1 2026-04-24
FAST34 - 1 2026-04-28

Recent flights last 4

DateFlightRouteTakeoffLandingDuration
2026-04-28 FAST34 - Apr 28, 19:55 UTCApr 28, 20:30 UTC35m
2026-04-27 RIBEYE2 - Apr 27, 17:15 UTCApr 27, 17:55 UTC40m
2026-04-24 FAST36 - Apr 24, 20:10 UTCApr 24, 20:30 UTC20m
2026-04-24 RIBEYE2 - Apr 24, 17:20 UTCApr 24, 17:35 UTC15m

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 64-13206 page for operator, model, and routing details .

Mode-S AE63CF frequently asked

What is Mode-S code AE63CF?
AE63CF is an ICAO 24-bit transponder address. Assigned to 64-13206.
Is AE63CF broadcasting right now?
No active broadcast right now. Last signal was 10d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE63CF, octal 53461717, decimal 11,428,815.
What flights does AE63CF operate?
Mode-S AE63CF has broadcast 3 distinct callsigns, including RIBEYE2, FAST36, FAST34.