Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

AE4FF6

ICAO 24-bit transponder address

Currently assigned to 168166 · SIKORSKY UH-60 Black Hawk

Hex
AE4FF6
Octal
53447766
Decimal
11,423,734
Tail
168166
Type
H60
No current signal · last broadcast 2d ago
Flights observed
2
Distinct callsigns
1
Country
-
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S AE4FF6.

Callsign history 1 distinct

Callsign Airline Flights Last seen
BT706 - 2 2026-04-13

Recent flights last 2

DateFlightRouteTakeoffLandingDuration
2026-04-13 BT706 - Apr 13, 03:20 UTCApr 13, 03:35 UTC15m
2026-04-13 BT706 - Apr 13, 00:20 UTCApr 13, 00:45 UTC25m

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 168166 page for operator, model, and routing details .

Mode-S AE4FF6 frequently asked

What is Mode-S code AE4FF6?
AE4FF6 is an ICAO 24-bit transponder address. Assigned to 168166.
Is AE4FF6 broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex AE4FF6, octal 53447766, decimal 11,423,734.
What flights does AE4FF6 operate?
Mode-S AE4FF6 has broadcast 1 distinct callsign, including BT706.