Apparatus

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sensors Mode-S transponder

06A3B6

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-BTC · BOEING 777-200LR

Hex
06A3B6
Octal
01521666
Decimal
435,126
Country
QA
Tail
A7-BTC
Type
B77L
No current signal · last broadcast 1h ago
Flights observed
271
Distinct callsigns
20
Country
QA
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 06A3B6.

Country allocation

The ICAO 24-bit address 06A3B6 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
QTR8242 - 11 2026-07-06
QTR8411 Qatar Airways 8 2026-06-30
QTR8408 Qatar Airways 8 2026-06-04
QTR8410 - 7 2026-06-30
QTR8P - 6 2026-07-06
QTR8175 - 6 2026-04-13
QTR8943 - 5 2026-07-13
QTR8942 - 5 2026-07-13
QTR8919 Qatar Airways 5 2026-07-07
QTR8403 Qatar Airways 5 2026-06-03
QTR8402 Qatar Airways 5 2026-06-02
QTR8278 Qatar Airways 5 2026-06-05
QTR8471 - 4 2026-07-09
QTR8455 - 4 2026-06-28
QTR8454 - 4 2026-06-28
QTR8428 Qatar Airways 4 2026-05-22
QTR8409 Qatar Airways 4 2026-06-04
QTR8394 - 4 2026-06-18
QTR8277 Qatar Airways 4 2026-06-05
QTR8244 Qatar Airways 4 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 QTR8943 - Jul 13, 22:35 UTCJul 14, 04:35 UTC6h 0m
2026-07-13 QTR8943 - Jul 13, 21:45 UTCJul 13, 21:55 UTC10m
2026-07-13 QTR8942 - Jul 13, 11:15 UTCJul 13, 17:15 UTC6h 0m
2026-07-12 QTR29Y - Jul 12, 23:35 UTCJul 13, 09:25 UTC9h 50m
2026-07-12 QTR76R BRU → DOH Jul 12, 14:35 UTCJul 12, 20:50 UTC6h 15m
2026-07-12 QTR57L - Jul 12, 04:55 UTCJul 12, 11:25 UTC6h 30m
2026-07-11 QTR8007 - Jul 11, 06:15 UTCJul 11, 20:40 UTC14h 25m
2026-07-11 QTR8007 - Jul 11, 01:10 UTCJul 11, 02:00 UTC50m
2026-07-10 QTR8007 - Jul 10, 14:40 UTCJul 10, 19:15 UTC4h 35m
2026-07-09 QTR8006 - Jul 9, 20:10 UTCJul 10, 12:15 UTC16h 5m
2026-07-09 QTR8471 - Jul 9, 17:15 UTCJul 9, 17:35 UTC20m
2026-07-09 QTR8471 - Jul 9, 12:00 UTCJul 9, 15:45 UTC3h 45m
2026-07-09 QTR8471 - Jul 9, 10:20 UTCJul 9, 10:30 UTC10m
2026-07-08 QTR8470 - Jul 8, 23:55 UTCJul 9, 08:20 UTC8h 25m
2026-07-08 QTR8479 - Jul 8, 15:05 UTCJul 8, 21:50 UTC6h 45m
2026-07-08 QTR8479 - Jul 8, 14:20 UTCJul 8, 14:30 UTC10m
2026-07-08 QTR8478 - Jul 8, 11:15 UTCJul 8, 11:35 UTC20m
2026-07-08 QTR8478 - Jul 8, 00:25 UTCJul 8, 10:25 UTC10h 0m
2026-07-07 QTR8919 CRK → AKL Jul 7, 12:30 UTCJul 7, 21:20 UTC8h 50m
2026-07-07 QTR8919 CRK → AKL Jul 7, 10:15 UTCJul 7, 10:45 UTC30m
2026-07-07 QTR8919 CRK → AKL Jul 7, 09:25 UTCJul 7, 09:35 UTC10m
2026-07-06 QTR8918 BNE → SYD Jul 6, 22:40 UTCJul 7, 04:20 UTC5h 40m
2026-07-06 QTR8242 BUD → DOH Jul 6, 15:35 UTCJul 6, 20:20 UTC4h 45m
2026-07-06 QTR8P - Jul 6, 08:20 UTCJul 6, 13:25 UTC5h 5m
2026-07-05 QTR8435 - Jul 5, 22:20 UTCJul 6, 05:10 UTC6h 50m
2026-07-05 QTR8435 - Jul 5, 21:30 UTCJul 5, 21:50 UTC20m
2026-07-05 QTR8434 - Jul 5, 18:30 UTCJul 5, 18:45 UTC15m
2026-07-05 QTR8434 - Jul 5, 10:25 UTCJul 5, 16:30 UTC6h 5m
2026-07-05 QTR99R - Jul 5, 04:35 UTCJul 5, 08:25 UTC3h 50m
2026-07-04 QTR87M - Jul 4, 20:20 UTCJul 5, 01:55 UTC5h 35m
2026-07-04 QTR59K - Jul 4, 11:25 UTCJul 4, 17:55 UTC6h 30m
2026-07-03 QTR30V - Jul 3, 22:40 UTCJul 4, 08:05 UTC9h 25m
2026-07-03 QTR12B AMS → DOH Jul 3, 11:25 UTCJul 3, 16:55 UTC5h 30m
2026-07-03 QTR99E - Jul 3, 02:20 UTCJul 3, 08:35 UTC6h 15m
2026-07-02 QTR46U FRA → DOH Jul 2, 18:15 UTCJul 2, 23:40 UTC5h 25m
2026-07-02 QTR90G - Jul 2, 09:35 UTCJul 2, 15:30 UTC5h 55m
2026-07-01 QTR8242 - Jul 1, 21:15 UTCJul 2, 00:30 UTC3h 15m
2026-07-01 QTR8242 BUD → OSL Jul 1, 15:40 UTCJul 1, 18:20 UTC2h 40m
2026-07-01 QTR8P DOH → BUD Jul 1, 08:15 UTCJul 1, 13:05 UTC4h 50m
2026-06-30 QTR8411 GRU → NVT Jun 30, 22:05 UTCJul 1, 05:35 UTC7h 30m
2026-06-30 QTR8410 - Jun 30, 19:00 UTCJun 30, 19:20 UTC20m
2026-06-30 QTR8410 - Jun 30, 11:30 UTCJun 30, 18:15 UTC6h 45m
2026-06-30 QTR8955 - Jun 30, 03:10 UTCJun 30, 09:35 UTC6h 25m
2026-06-29 QTR8954 - Jun 29, 18:19 UTCJun 30, 01:09 UTC6h 50m
2026-06-29 QTR8291 VIE → DOH Jun 29, 11:25 UTCJun 29, 16:15 UTC4h 50m
2026-06-29 QTR8291 BUD → VIE Jun 29, 07:59 UTCJun 29, 08:35 UTC35m
2026-06-29 QTR8290 - Jun 29, 01:10 UTCJun 29, 05:54 UTC4h 45m
2026-06-28 QTR8455 - Jun 28, 15:05 UTCJun 28, 21:50 UTC6h 45m
2026-06-28 QTR8455 - Jun 28, 14:19 UTCJun 28, 14:34 UTC15m
2026-06-28 QTR8454 - Jun 28, 10:55 UTCJun 28, 11:19 UTC25m

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-BTC page for operator, model, and routing details .

Mode-S 06A3B6 frequently asked

What is Mode-S code 06A3B6?
06A3B6 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BTC.
Where is Mode-S 06A3B6 registered?
Mode-S code 06A3B6 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A3B6 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A3B6, octal 01521666, decimal 435,126.
What flights does 06A3B6 operate?
Mode-S 06A3B6 has broadcast 20 distinct callsigns, including QTR8242, QTR8411, QTR8408, QTR8410, QTR8P.