Mode-S AE7807 · Transponder Hex for 21-30806

Q: What is Mode-S code AE7807?

AE7807 is an ICAO 24-bit transponder address. Assigned to 21-30806 .

Last known position

Most recent position reported by Mode-S AE7807.

Callsign history 2 distinct

Callsign	Airline	Flights	Last seen
MERK71	-	2	2026-04-23
NOOK38	-	1	2026-05-18

Recent flights last 3

Date	Flight	Route	Takeoff	Landing	Duration
2026-05-18	NOOK38	-	May 18, 15:00 UTC	May 18, 15:10 UTC	10m
2026-04-23	MERK71	-	Apr 23, 01:50 UTC	Apr 23, 02:40 UTC	50m
2026-04-22	MERK71	-	Apr 22, 23:40 UTC	Apr 23, 00:15 UTC	35m

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 21-30806 page for operator, model, and routing details .

Mode-S AE7807 frequently asked

What is Mode-S code AE7807?

AE7807 is an ICAO 24-bit transponder address. Assigned to 21-30806.

Is AE7807 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 AE7807, octal 53474007, decimal 11,433,991.

What flights does AE7807 operate?

Mode-S AE7807 has broadcast 2 distinct callsigns, including MERK71, NOOK38.