Apparatus

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sensors Mode-S transponder

06A3B7

ICAO 24-bit transponder address · allocated to Qatar

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

Hex
06A3B7
Octal
01521667
Decimal
435,127
Country
QA
Tail
A7-BTD
Type
B77L
No current signal · last broadcast 5h ago
Flights observed
275
Distinct callsigns
20
Country
QA
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 06A3B7.

Country allocation

The ICAO 24-bit address 06A3B7 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
QTR8960 Qatar Airways 7 2026-05-24
QTR8943 - 7 2026-07-07
QTR8P - 6 2026-06-29
QTR8942 - 6 2026-07-06
QTR8441 - 6 2026-07-11
QTR8435 - 6 2026-07-03
QTR8961 - 5 2026-06-23
QTR8440 - 5 2026-07-11
QTR8274 Qatar Airways 5 2026-04-17
QTR8273 Qatar Airways 5 2026-04-16
QTR8242 - 5 2026-06-29
QTR8938 Qatar Airways 4 2026-04-15
QTR8434 - 4 2026-07-02
QTR8431 Qatar Airways 4 2026-06-22
QTR8430 - 4 2026-06-22
QTR8401 - 4 2026-07-13
QTR8238 Qatar Airways 4 2026-05-11
QTR8220 Qatar Airways 4 2026-06-14
QTR8981 Qatar Airways 3 2026-06-19
QTR8980 Qatar Airways 3 2026-06-19

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 QTR8578 - Jul 14, 11:00 UTCJul 14, 11:50 UTC50m
2026-07-13 QTR8578 DOH → SYD Jul 13, 19:20 UTCJul 14, 08:45 UTC13h 25m
2026-07-13 QTR8401 - Jul 13, 11:15 UTCJul 13, 16:55 UTC5h 40m
2026-07-13 QTR8401 - Jul 13, 09:35 UTCJul 13, 09:45 UTC10m
2026-07-12 QTR8400 - Jul 12, 22:35 UTCJul 13, 07:05 UTC8h 30m
2026-07-12 QTR8288 - Jul 12, 15:25 UTCJul 12, 21:05 UTC5h 40m
2026-07-12 QTR8287 - Jul 12, 07:20 UTCJul 12, 13:30 UTC6h 10m
2026-07-11 QTR8441 - Jul 11, 23:40 UTCJul 12, 05:15 UTC5h 35m
2026-07-11 QTR8441 - Jul 11, 21:50 UTCJul 11, 22:01 UTC10m
2026-07-11 QTR8440 - Jul 11, 18:25 UTCJul 11, 18:55 UTC30m
2026-07-11 QTR8440 - Jul 11, 10:45 UTCJul 11, 16:40 UTC5h 55m
2026-07-10 QTR8624 - Jul 10, 21:15 UTCJul 11, 07:55 UTC10h 40m
2026-07-10 QTR30G - Jul 10, 13:20 UTCJul 10, 19:10 UTC5h 50m
2026-07-10 QTR40T - Jul 10, 03:55 UTCJul 10, 10:20 UTC6h 25m
2026-07-10 QTR23C - Jul 10, 01:35 UTCJul 10, 01:55 UTC20m
2026-07-09 QTR49L - Jul 9, 04:30 UTCJul 9, 04:55 UTC25m
2026-07-09 QTR8270 - Jul 9, 01:40 UTCJul 9, 02:15 UTC35m
2026-07-08 QTR8270 - Jul 8, 20:30 UTCJul 9, 00:25 UTC3h 55m
2026-07-08 QTR8270 LEJ → BRU Jul 8, 17:35 UTCJul 8, 18:25 UTC50m
2026-07-08 QTR8269 - Jul 8, 09:00 UTCJul 8, 14:30 UTC5h 30m
2026-07-08 QTR8429 - Jul 8, 01:40 UTCJul 8, 07:25 UTC5h 45m
2026-07-07 QTR8429 - Jul 7, 23:55 UTCJul 8, 00:10 UTC15m
2026-07-07 QTR8428 - Jul 7, 20:30 UTCJul 7, 21:05 UTC35m
2026-07-07 QTR8428 - Jul 7, 13:10 UTCJul 7, 18:50 UTC5h 40m
2026-07-07 QTR8725 SHJ → DOH Jul 7, 09:55 UTCJul 7, 10:40 UTC45m
2026-07-07 QTR8724 - Jul 7, 06:25 UTCJul 7, 07:30 UTC1h 5m
2026-07-07 QTR8943 - Jul 7, 03:20 UTCJul 7, 03:45 UTC25m
2026-07-06 QTR8943 - Jul 6, 21:10 UTCJul 7, 01:20 UTC4h 10m
2026-07-06 QTR8942 - Jul 6, 11:30 UTCJul 6, 15:35 UTC4h 5m
2026-07-05 QTR8371 - Jul 5, 11:30 UTCJul 6, 04:25 UTC16h 55m
2026-07-05 QTR8433 - Jul 5, 03:40 UTCJul 5, 10:00 UTC6h 20m
2026-07-05 QTR8433 - Jul 5, 02:10 UTCJul 5, 02:30 UTC20m
2026-07-04 QTR8432 - Jul 4, 23:05 UTCJul 4, 23:30 UTC25m
2026-07-04 QTR8432 - Jul 4, 19:55 UTCJul 4, 20:20 UTC25m
2026-07-04 QTR8432 - Jul 4, 10:25 UTCJul 4, 17:30 UTC7h 5m
2026-07-04 QTR38T - Jul 4, 02:55 UTCJul 4, 07:55 UTC5h 0m
2026-07-03 QTR8214 - Jul 3, 23:05 UTCJul 4, 00:35 UTC1h 30m
2026-07-03 QTR7X - Jul 3, 13:10 UTCJul 3, 19:45 UTC6h 35m
2026-07-03 QTR8435 - Jul 3, 06:15 UTCJul 3, 11:40 UTC5h 25m
2026-07-03 QTR8435 - Jul 3, 04:10 UTCJul 3, 04:25 UTC15m
2026-07-02 QTR8434 - Jul 2, 15:40 UTCJul 2, 23:25 UTC7h 45m
2026-07-02 QTR8427 GRU → RAO Jul 2, 06:45 UTCJul 2, 12:10 UTC5h 25m
2026-07-02 QTR8426 DOH → HKG Jul 2, 02:00 UTCJul 2, 02:35 UTC35m
2026-07-01 QTR8426 DOH → HKG Jul 1, 18:05 UTCJul 2, 01:15 UTC7h 10m
2026-07-01 QTR8660 DFW → XNA Jul 1, 03:05 UTCJul 1, 06:20 UTC3h 15m
2026-06-30 QTR8039 - Jun 30, 20:15 UTCJul 1, 00:30 UTC4h 15m
2026-06-30 QTR8045 MAD → MLN Jun 30, 13:05 UTCJun 30, 19:00 UTC5h 55m
2026-06-30 QTR8045 MAD → MLN Jun 30, 10:55 UTCJun 30, 11:30 UTC35m
2026-06-29 QTR8900 NGO → LAX Jun 29, 22:24 UTCJun 30, 05:10 UTC6h 45m
2026-06-29 QTR8242 - Jun 29, 19:44 UTCJun 29, 20:15 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-BTD page for operator, model, and routing details .

Mode-S 06A3B7 frequently asked

What is Mode-S code 06A3B7?
06A3B7 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BTD.
Where is Mode-S 06A3B7 registered?
Mode-S code 06A3B7 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A3B7 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A3B7, octal 01521667, decimal 435,127.
What flights does 06A3B7 operate?
Mode-S 06A3B7 has broadcast 20 distinct callsigns, including QTR8960, QTR8943, QTR8P, QTR8942, QTR8441.