Apparatus

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sensors Mode-S transponder

06A1BF

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-BEI · BOEING 777-300ER

Hex
06A1BF
Octal
01520677
Decimal
434,623
Country
QA
Tail
A7-BEI
Type
B77W
Broadcasting now · callsign QTR68T · 35,000 ft
Flights observed
132
Distinct callsigns
20
Country
QA
Last broadcast
1h ago

Current position

06A1BF is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 06A1BF 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 20 distinct

Callsign Airline Flights Last seen
QTR1V Qatar Airways 8 2026-06-04
QTR871 Qatar Airways 7 2026-06-13
QTR837 Qatar Airways 5 2026-04-26
QTR33W Qatar Airways 5 2026-06-04
QTR933 Qatar Airways 4 2026-05-16
QTR932 Qatar Airways 4 2026-05-15
QTR90C Qatar Airways 4 2026-06-14
QTR836 Qatar Airways 4 2026-04-26
QTR54E Qatar Airways 4 2026-06-11
QTR1J Qatar Airways 4 2026-04-17
QTR1191 Qatar Airways 3 2026-06-06
QTR875 Qatar Airways 2 2026-05-10
QTR870 Qatar Airways 2 2026-04-28
QTR859 Qatar Airways 2 2026-04-15
QTR858 Qatar Airways 2 2026-04-14
QTR848 Qatar Airways 2 2026-04-29
QTR807 - 2 2026-07-12
QTR806 - 2 2026-07-12
QTR74V - 2 2026-07-01
QTR65H Qatar Airways 2 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 QTR68T - Jul 13, 23:55 UTCJul 14, 07:45 UTC7h 50m
2026-07-13 QTR21X - Jul 13, 05:50 UTCJul 13, 20:25 UTC14h 35m
2026-07-12 QTR807 - Jul 12, 13:55 UTCJul 13, 00:05 UTC10h 10m
2026-07-12 QTR806 - Jul 12, 07:01 UTCJul 12, 10:05 UTC3h 5m
2026-07-11 VOZ001 - Jul 11, 04:55 UTCJul 11, 19:10 UTC14h 15m
2026-07-10 VOZ002 - Jul 10, 07:15 UTCJul 10, 20:25 UTC13h 10m
2026-07-09 QTR30J - Jul 9, 15:45 UTCJul 10, 03:55 UTC12h 10m
2026-07-09 QTR72P DOH → DFW Jul 9, 01:25 UTCJul 9, 12:50 UTC11h 25m
2026-07-08 QTR809 - Jul 8, 08:40 UTCJul 8, 18:55 UTC10h 15m
2026-07-07 QTR808 - Jul 7, 17:50 UTCJul 8, 03:50 UTC10h 0m
2026-07-04 QTR27R - Jul 4, 11:10 UTCJul 5, 01:20 UTC14h 10m
2026-07-04 QTR40X - Jul 4, 06:25 UTCJul 4, 07:00 UTC35m
2026-07-03 QTR56L - Jul 3, 11:15 UTCJul 3, 14:40 UTC3h 25m
2026-07-03 QTR36P - Jul 3, 05:00 UTCJul 3, 07:35 UTC2h 35m
2026-07-02 QTR16M - Jul 2, 12:25 UTCJul 3, 02:40 UTC14h 15m
2026-07-01 QTR74V - Jul 1, 17:55 UTCJul 2, 06:55 UTC13h 0m
2026-07-01 QTR120 - Jul 1, 08:50 UTCJul 1, 15:10 UTC6h 20m
2026-07-01 QTR119 - Jul 1, 02:00 UTCJul 1, 06:30 UTC4h 30m
2026-06-23 QTR77A IAD → DOH Jun 23, 01:20 UTCJun 23, 13:59 UTC12h 40m
2026-06-22 QTR18F - Jun 22, 05:54 UTCJun 22, 20:19 UTC14h 25m
2026-06-21 QTR16M - Jun 21, 12:35 UTCJun 22, 02:25 UTC13h 50m
2026-06-20 QTR74V - Jun 20, 21:19 UTCJun 21, 07:34 UTC10h 15m
2026-06-20 QTR17E - Jun 20, 02:49 UTCJun 20, 12:19 UTC9h 30m
2026-06-19 QTR20R DOH → JFK Jun 19, 07:59 UTCJun 19, 19:59 UTC12h 0m
2026-06-19 QTR3X - Jun 19, 00:45 UTCJun 19, 01:04 UTC20m
2026-06-18 QTR3X - Jun 18, 12:35 UTCJun 18, 21:50 UTC9h 15m
2026-06-18 QTR915 - Jun 18, 05:35 UTCJun 18, 10:15 UTC4h 40m
2026-06-17 QTR914 ADL → AKL Jun 17, 07:35 UTCJun 17, 11:20 UTC3h 45m
2026-06-16 QTR55Y - Jun 16, 20:35 UTCJun 17, 05:35 UTC9h 0m
2026-06-16 QTR1241 - Jun 16, 06:50 UTCJun 16, 11:05 UTC4h 15m
2026-06-15 QTR42M AMS → DOH Jun 15, 21:14 UTCJun 16, 02:54 UTC5h 40m
2026-06-15 QTR037 DOH → CDG Jun 15, 02:30 UTCJun 15, 19:10 UTC16h 40m
2026-06-14 QTR90C DOH → IAD Jun 14, 17:15 UTCJun 15, 00:20 UTC7h 4m
2026-06-14 QTR1169 - Jun 14, 05:30 UTCJun 14, 09:30 UTC4h 0m
2026-06-14 QTR25J - Jun 14, 01:00 UTCJun 14, 01:10 UTC10m
2026-06-13 QTR1K - Jun 13, 18:20 UTCJun 13, 19:00 UTC40m
2026-06-13 QTR871 PVG → DOH Jun 13, 01:15 UTCJun 13, 01:35 UTC20m
2026-06-12 QTR871 PVG → DOH Jun 12, 04:30 UTCJun 12, 23:40 UTC19h 10m
2026-06-11 QTR65H DOH → MIA Jun 11, 20:10 UTCJun 11, 20:35 UTC25m
2026-06-11 QTR65H DOH → MIA Jun 11, 14:45 UTCJun 11, 18:25 UTC3h 40m
2026-06-11 QTR54E DOH → CDG Jun 11, 08:40 UTCJun 11, 11:50 UTC3h 10m
2026-06-10 QTR54E DOH → CDG Jun 10, 16:20 UTCJun 11, 11:50 UTC19h 30m
2026-06-10 QTR54E DOH → CDG Jun 10, 15:10 UTCJun 11, 11:50 UTC20h 40m
2026-06-10 QTR54E DOH → CDG Jun 10, 12:20 UTCJun 11, 11:45 UTC23h 25m
2026-06-10 QTR73P DOH → KUL Jun 10, 02:45 UTCJun 10, 07:45 UTC5h 0m
2026-06-08 QTR893 PKX → DOH Jun 8, 17:10 UTCJun 8, 17:30 UTC20m
2026-06-08 QTR892 DOH → PKX Jun 8, 07:50 UTCJun 8, 08:00 UTC10m
2026-06-07 QTR3R DOH → BHX Jun 7, 07:40 UTCJun 7, 07:55 UTC15m
2026-06-07 QTR62J MAN → DOH Jun 7, 04:20 UTCJun 7, 04:55 UTC35m
2026-06-06 QTR1191 JED → DOH Jun 6, 10:04 UTCJun 6, 10:34 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-BEI page for operator, model, and routing details .

Mode-S 06A1BF frequently asked

What is Mode-S code 06A1BF?
06A1BF is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BEI.
Where is Mode-S 06A1BF registered?
Mode-S code 06A1BF is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A1BF broadcasting right now?
Yes. Mode-S 06A1BF is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A1BF, octal 01520677, decimal 434,623.
What flights does 06A1BF operate?
Mode-S 06A1BF has broadcast 20 distinct callsigns, including QTR1V, QTR871, QTR837, QTR33W, QTR933.