Mode-S AE173B · Transponder Hex for 06-3841

Q: What is Mode-S code AE173B?

AE173B is an ICAO 24-bit transponder address. Assigned to 06-3841 .

Last known position

Most recent position reported by Mode-S AE173B.

Callsign history 2 distinct

Callsign	Airline	Flights	Last seen
BOMA51	-	2	2026-04-26
MAFIA94	-	1	2026-05-29

Recent flights last 3

Date	Flight	Route	Takeoff	Landing	Duration
2026-05-29	MAFIA94	-	May 29, 23:50 UTC	May 30, 01:05 UTC	1h 15m
2026-04-26	BOMA51	-	Apr 26, 18:30 UTC	Apr 26, 18:45 UTC	15m
2026-04-26	BOMA51	-	Apr 26, 01:05 UTC	Apr 26, 02:55 UTC	1h 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 06-3841 page for operator, model, and routing details .

Mode-S AE173B frequently asked

What is Mode-S code AE173B?

AE173B is an ICAO 24-bit transponder address. Assigned to 06-3841.

Is AE173B broadcasting right now?

No active broadcast right now. Last signal was 8h ago.

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

The same 24-bit identifier expressed in different bases: hex AE173B, octal 53413473, decimal 11,409,211.

What flights does AE173B operate?

Mode-S AE173B has broadcast 2 distinct callsigns, including BOMA51, MAFIA94.