sensors Mode-S transponder

06A3AF

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-GQB · AGUSTA AW-139

Hex
06A3AF
Octal
01521657
Decimal
435,119
Country
QA
Tail
A7-GQB
Type
A139
No current signal · last broadcast 17h ago
Flights observed
9
Distinct callsigns
1
Country
QA
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 06A3AF.

Country allocation

The ICAO 24-bit address 06A3AF falls within the block assigned to Qatar (QA) by ICAO Annex 10, Volume III. Every aircraft registered in Qatar receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 1 distinct

Callsign Airline Flights Last seen
A7GQB - 9 2026-04-14

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 A7GQB - Apr 14, 05:30 UTCApr 14, 05:55 UTC25m
2026-04-13 A7GQB - Apr 13, 14:50 UTCApr 13, 15:30 UTC40m
2026-04-13 A7GQB - Apr 13, 14:35 UTCApr 13, 14:45 UTC10m
2026-04-13 A7GQB - Apr 13, 12:40 UTCApr 13, 13:05 UTC25m
2026-04-13 A7GQB - Apr 13, 12:20 UTCApr 13, 12:30 UTC10m
2026-04-13 A7GQB - Apr 13, 12:05 UTCApr 13, 12:15 UTC10m
2026-04-13 A7GQB - Apr 13, 05:05 UTCApr 13, 05:50 UTC45m
2026-04-13 A7GQB - Apr 13, 02:55 UTCApr 13, 03:15 UTC20m
2026-04-13 A7GQB - Apr 13, 02:20 UTCApr 13, 02:50 UTC30m

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 A7-GQB page for operator, model, and routing details .

Mode-S 06A3AF frequently asked

What is Mode-S code 06A3AF?
06A3AF is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-GQB.
Where is Mode-S 06A3AF registered?
Mode-S code 06A3AF is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A3AF broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A3AF, octal 01521657, decimal 435,119.
What flights does 06A3AF operate?
Mode-S 06A3AF has broadcast 1 distinct callsign, including A7GQB.