Mode-S AE4D3F · Transponder Hex for 168553

Q: What is Mode-S code AE4D3F?

AE4D3F is an ICAO 24-bit transponder address. Assigned to 168553 .

Last known position

Most recent position reported by Mode-S AE4D3F.

Callsign history 2 distinct

Callsign	Airline	Flights	Last seen
BT11	-	3	2026-04-17
NITE11	-	1	2026-04-16

Recent flights last 4

Date	Flight	Route	Takeoff	Landing	Duration
2026-04-17	BT11	-	Apr 17, 04:50 UTC	Apr 17, 05:15 UTC	25m
2026-04-17	BT11	-	Apr 17, 01:20 UTC	Apr 17, 03:10 UTC	1h 50m
2026-04-16	BT11	-	Apr 16, 23:55 UTC	Apr 17, 01:15 UTC	1h 20m
2026-04-16	NITE11	-	Apr 16, 18:20 UTC	Apr 16, 19:10 UTC	50m

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 168553 page for operator, model, and routing details .

Mode-S AE4D3F frequently asked

What is Mode-S code AE4D3F?

AE4D3F is an ICAO 24-bit transponder address. Assigned to 168553.

Is AE4D3F 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 AE4D3F, octal 53446477, decimal 11,423,039.

What flights does AE4D3F operate?

Mode-S AE4D3F has broadcast 2 distinct callsigns, including BT11, NITE11.