Apparatus

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sensors Mode-S transponder

06A077

ICAO 24-bit transponder address · allocated to Qatar

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

Hex
06A077
Octal
01520167
Decimal
434,295
Country
QA
Tail
A7-BAJ
Type
B77W
No current signal · last broadcast Jul 26, 21:45 UTC
Flights observed
174
Distinct callsigns
20
Country
QA
Last broadcast
Jul 26, 21:45 UTC

Last known position

Most recent position reported by Mode-S 06A077.

Country allocation

The ICAO 24-bit address 06A077 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
QTR1396 - 13 2026-07-18
QTR46M - 10 2026-07-18
QTR90C Qatar Airways 6 2026-07-25
QTR840 Qatar Airways 6 2026-05-06
QTR829 Qatar Airways 6 2026-05-11
QTR828 Qatar Airways 6 2026-05-11
QTR36A Qatar Airways 6 2026-07-26
QTR892 - 5 2026-07-01
QTR872 - 4 2026-07-19
QTR55J Qatar Airways 4 2026-04-16
QTR52N Qatar Airways 4 2026-07-24
QTR25C Qatar Airways 4 2026-04-28
QTR956 Qatar Airways 3 2026-07-23
QTR871 - 3 2026-07-20
QTR869 Qatar Airways 3 2026-07-22
QTR403 Qatar Airways 3 2026-05-19
QTR27L Qatar Airways 3 2026-05-27
QTR22X Qatar Airways 3 2026-05-21
QTR1R Qatar Airways 3 2026-07-25
QTR18J Qatar Airways 3 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QTR830 DOH → BKK Jul 26, 17:45 UTCJul 26, 21:45 UTC4h 0m
2026-07-26 QTR36A LHR → LHR Jul 26, 03:00 UTCJul 26, 09:30 UTC6h 31m
2026-07-25 QTR90C DOH → IAD Jul 25, 16:45 UTCJul 25, 23:45 UTC7h 0m
2026-07-25 QTR1R DOH → ATH Jul 25, 04:15 UTCJul 25, 04:25 UTC10m
2026-07-24 QTR1R DOH → ATH Jul 24, 22:00 UTCJul 25, 02:35 UTC4h 35m
2026-07-24 QTR52N ATL → DOH Jul 24, 18:40 UTCJul 24, 18:50 UTC10m
2026-07-24 QTR52N ATL → DOH Jul 24, 11:50 UTCJul 24, 18:10 UTC6h 20m
2026-07-24 QTR8H LHE → DOH Jul 24, 06:35 UTCJul 24, 09:35 UTC3h 0m
2026-07-24 QTR18H DOH → LAX Jul 24, 01:30 UTCJul 24, 04:25 UTC2h 55m
2026-07-23 QTR957 CGK → DOH Jul 23, 11:50 UTCJul 23, 19:25 UTC7h 35m
2026-07-23 QTR956 DOH → CGK Jul 23, 08:25 UTCJul 23, 08:45 UTC20m
2026-07-22 QTR869 DME → DOH Jul 22, 15:20 UTCJul 23, 07:40 UTC16h 20m
2026-07-22 QTR869 DME → DOH Jul 22, 03:50 UTCJul 23, 03:05 UTC23h 15m
2026-07-22 QTR869 DME → DOH Jul 22, 01:50 UTCJul 23, 01:25 UTC23h 35m
2026-07-22 QTR870 DOH → PVG Jul 22, 01:20 UTCJul 22, 18:40 UTC17h 20m
2026-07-21 QTR23V DOH → ARN Jul 21, 17:15 UTCJul 21, 20:10 UTC2h 55m
2026-07-21 QTR73C - Jul 21, 12:05 UTCJul 21, 14:35 UTC2h 30m
2026-07-21 QTR36A LHR → LHR Jul 21, 05:05 UTCJul 21, 08:55 UTC3h 50m
2026-07-21 QTR36A LHR → LHR Jul 21, 02:25 UTCJul 21, 02:40 UTC15m
2026-07-20 QTR90C DOH → IAD Jul 20, 19:35 UTCJul 21, 00:10 UTC4h 34m
2026-07-20 QTR90C DOH → IAD Jul 20, 17:25 UTCJul 20, 18:15 UTC50m
2026-07-20 QTR1191 JED → DOH Jul 20, 05:10 UTCJul 20, 11:00 UTC5h 50m
2026-07-20 QTR871 - Jul 20, 01:35 UTCJul 20, 01:50 UTC15m
2026-07-19 QTR871 - Jul 19, 23:25 UTCJul 20, 00:10 UTC45m
2026-07-19 QTR872 - Jul 19, 07:15 UTCJul 19, 22:15 UTC15h 0m
2026-07-18 QTR1396 - Jul 18, 20:05 UTCJul 19, 03:05 UTC7h 0m
2026-07-18 QTR1396 - Jul 18, 17:20 UTCJul 18, 17:45 UTC25m
2026-07-18 QTR1395 - Jul 18, 15:00 UTCJul 18, 15:25 UTC25m
2026-07-18 QTR46M - Jul 18, 08:40 UTCJul 18, 13:35 UTC4h 55m
2026-07-17 QTR1396 - Jul 17, 20:10 UTCJul 18, 00:50 UTC4h 40m
2026-07-17 QTR1396 - Jul 17, 17:30 UTCJul 17, 18:00 UTC30m
2026-07-17 QTR1395 - Jul 17, 15:20 UTCJul 17, 15:44 UTC25m
2026-07-16 QTR871 - Jul 16, 07:55 UTCJul 17, 01:59 UTC18h 5m
2026-07-16 QTR872 - Jul 16, 06:00 UTCJul 17, 01:59 UTC20h 0m
2026-07-12 QTR839 - Jul 12, 03:25 UTCJul 12, 09:20 UTC5h 55m
2026-07-11 QTR838 - Jul 11, 17:00 UTCJul 11, 23:20 UTC6h 20m
2026-07-11 QTR411 - Jul 11, 11:45 UTCJul 11, 14:05 UTC2h 20m
2026-07-11 QTR410 - Jul 11, 06:05 UTCJul 11, 08:05 UTC2h 0m
2026-07-10 - - Jul 10, 20:20 UTCJul 11, 03:05 UTC6h 45m
2026-07-10 QTR46M - Jul 10, 06:05 UTCJul 10, 06:25 UTC20m
2026-07-09 QTR872 - Jul 9, 06:10 UTCJul 10, 01:25 UTC19h 15m
2026-07-08 QTR1396 - Jul 8, 20:10 UTCJul 9, 02:45 UTC6h 35m
2026-07-08 QTR1395 DOH → CMN Jul 8, 15:15 UTCJul 8, 15:35 UTC20m
2026-07-08 QTR46M - Jul 8, 06:10 UTCJul 8, 13:40 UTC7h 30m
2026-07-07 QTR1396 - Jul 7, 20:10 UTCJul 8, 03:00 UTC6h 50m
2026-07-07 QTR46M - Jul 7, 06:00 UTCJul 7, 13:00 UTC7h 0m
2026-07-06 QTR957 - Jul 6, 11:35 UTCJul 6, 19:15 UTC7h 40m
2026-07-06 QTR956 - Jul 6, 08:00 UTCJul 6, 08:20 UTC20m
2026-07-06 QTR956 - Jul 6, 00:05 UTCJul 6, 07:30 UTC7h 25m
2026-07-05 QTR99X - Jul 5, 14:40 UTCJul 5, 19:50 UTC5h 10m

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

Mode-S 06A077 frequently asked

What is Mode-S code 06A077?
06A077 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BAJ.
Where is Mode-S 06A077 registered?
Mode-S code 06A077 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A077 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A077, octal 01520167, decimal 434,295.
What flights does 06A077 operate?
Mode-S 06A077 has broadcast 20 distinct callsigns, including QTR1396, QTR46M, QTR90C, QTR840, QTR829.