Mode-S AE172B · Transponder Hex for 06-3825

Q: What is Mode-S code AE172B?

AE172B is an ICAO 24-bit transponder address. Assigned to 06-3825 .

Last known position

Most recent position reported by Mode-S AE172B.

Callsign history 3 distinct

Callsign	Airline	Flights	Last seen
RIPSAW5	-	1	2026-06-17
DUDE18	-	1	2026-06-16
BIGCAT7	-	1	2026-06-11

Recent flights last 3

Date	Flight	Route	Takeoff	Landing	Duration
2026-06-17	RIPSAW5	-	Jun 17, 17:40 UTC	Jun 17, 18:00 UTC	20m
2026-06-16	DUDE18	-	Jun 16, 14:25 UTC	Jun 16, 14:55 UTC	30m
2026-06-11	BIGCAT7	-	Jun 11, 20:45 UTC	Jun 11, 21:45 UTC	1h 0m

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 06-3825 page for operator, model, and routing details .

Mode-S AE172B frequently asked

What is Mode-S code AE172B?

AE172B is an ICAO 24-bit transponder address. Assigned to 06-3825.

Is AE172B broadcasting right now?

No active broadcast right now. Last signal was 28d ago.

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

The same 24-bit identifier expressed in different bases: hex AE172B, octal 53413453, decimal 11,409,195.

What flights does AE172B operate?

Mode-S AE172B has broadcast 3 distinct callsigns, including RIPSAW5, DUDE18, BIGCAT7.