Mode-S AE5D70 · Transponder Hex for 16-20871

Q: What is Mode-S code AE5D70?

AE5D70 is an ICAO 24-bit transponder address. Assigned to 16-20871 .

Last known position

Most recent position reported by Mode-S AE5D70.

Callsign history 2 distinct

Callsign	Airline	Flights	Last seen
R20871	-	2	2026-05-22
EVAC871	-	1	2026-05-10

Recent flights last 3

Date	Flight	Route	Takeoff	Landing	Duration
2026-05-22	R20871	-	May 22, 13:35 UTC	May 22, 13:45 UTC	10m
2026-05-10	R20871	-	May 10, 08:00 UTC	May 10, 08:30 UTC	30m
2026-05-10	EVAC871	-	May 10, 06:10 UTC	May 10, 06:35 UTC	25m

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 16-20871 page for operator, model, and routing details .

Mode-S AE5D70 frequently asked

What is Mode-S code AE5D70?

AE5D70 is an ICAO 24-bit transponder address. Assigned to 16-20871.

Is AE5D70 broadcasting right now?

No active broadcast right now. Last signal was 11d ago.

Hex, octal, and decimal Mode-S codes: what's the difference?

The same 24-bit identifier expressed in different bases: hex AE5D70, octal 53456560, decimal 11,427,184.

What flights does AE5D70 operate?

Mode-S AE5D70 has broadcast 2 distinct callsigns, including R20871, EVAC871.