sensors Mode-S transponder

06A1CB

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-CGF · GULFSTREAM G650

Hex
06A1CB
Octal
01520713
Decimal
434,635
Country
QA
Tail
A7-CGF
Type
GLF6
No current signal · last broadcast 12h ago
Flights observed
5
Distinct callsigns
1
Country
QA
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 06A1CB.

Country allocation

The ICAO 24-bit address 06A1CB 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
QQE717 - 5 2026-04-14

Recent flights last 5

DateFlightRouteTakeoffLandingDuration
2026-04-14 QQE717 - Apr 14, 10:05 UTCApr 14, 10:30 UTC25m
2026-04-14 QQE717 - Apr 14, 05:55 UTCApr 14, 06:30 UTC35m
2026-04-13 QQE717 - Apr 13, 11:00 UTCApr 13, 11:50 UTC50m
2026-04-13 QQE717 - Apr 13, 07:55 UTCApr 13, 11:50 UTC3h 55m
2026-04-13 QQE717 - Apr 13, 05:00 UTCApr 13, 08:00 UTC3h 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 A7-CGF page for operator, model, and routing details .

Mode-S 06A1CB frequently asked

What is Mode-S code 06A1CB?
06A1CB is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-CGF.
Where is Mode-S 06A1CB registered?
Mode-S code 06A1CB is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A1CB broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A1CB, octal 01520713, decimal 434,635.
What flights does 06A1CB operate?
Mode-S 06A1CB has broadcast 1 distinct callsign, including QQE717.