Apparatus

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sensors Mode-S transponder

06A138

ICAO 24-bit transponder address · allocated to Qatar

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

Hex
06A138
Octal
01520470
Decimal
434,488
Country
QA
Tail
A7-BAV
Type
B77W
No current signal · last broadcast 11h ago
Flights observed
116
Distinct callsigns
20
Country
QA
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 06A138.

Country allocation

The ICAO 24-bit address 06A138 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
QTR928 Qatar Airways 24 2026-05-24
QTR929 Qatar Airways 18 2026-05-25
QTR3R Qatar Airways 11 2026-05-21
QTR69N Qatar Airways 10 2026-05-16
QTR62J Qatar Airways 5 2026-05-20
QTR841 Qatar Airways 4 2026-04-23
QTR77T Qatar Airways 4 2026-04-27
QTR60L - 4 2026-05-04
QTR5B Qatar Airways 4 2026-04-27
QTR934 Qatar Airways 3 2026-05-08
QTR52N Qatar Airways 3 2026-05-07
QTR935 Qatar Airways 2 2026-05-09
QTR892 Qatar Airways 2 2026-05-29
QTR53Y - 2 2026-05-07
QTR42Y Qatar Airways 2 2026-05-11
QTR1155 Qatar Airways 2 2026-04-30
QTR1154 Qatar Airways 2 2026-04-30
QTR893 Qatar Airways 1 2026-05-29
QTR875 Qatar Airways 1 2026-04-26
QTR874 Qatar Airways 1 2026-04-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 QTR893 PKX → DOH May 29, 17:20 UTCMay 29, 17:30 UTC10m
2026-05-29 QTR892 DOH → PKX May 29, 08:00 UTCMay 29, 08:15 UTC15m
2026-05-25 QTR929 MNL → DOH May 25, 16:30 UTCMay 25, 23:04 UTC6h 34m
2026-05-24 QTR928 DOH → MNL May 24, 20:40 UTCMay 25, 14:15 UTC17h 35m
2026-05-24 QTR928 DOH → MNL May 24, 18:20 UTCMay 25, 14:15 UTC19h 55m
2026-05-24 QTR928 DOH → MNL May 24, 16:15 UTCMay 25, 14:15 UTC22h 0m
2026-05-23 QTR928 DOH → MNL May 23, 21:05 UTCMay 24, 14:05 UTC17h 0m
2026-05-23 QTR928 DOH → MNL May 23, 18:45 UTCMay 24, 14:05 UTC19h 20m
2026-05-23 QTR928 DOH → MNL May 23, 16:45 UTCMay 24, 14:05 UTC21h 20m
2026-05-23 QTR928 DOH → MNL May 23, 06:20 UTCMay 23, 06:35 UTC15m
2026-05-23 QTR929 MNL → DOH May 23, 00:50 UTCMay 23, 01:10 UTC20m
2026-05-22 QTR929 MNL → DOH May 22, 16:40 UTCMay 22, 23:15 UTC6h 35m
2026-05-22 QTR928 DOH → MNL May 22, 07:35 UTCMay 22, 10:40 UTC3h 5m
2026-05-21 QTR928 DOH → MNL May 21, 10:05 UTCMay 22, 10:00 UTC23h 55m
2026-05-21 QTR3R DOH → BHX May 21, 08:05 UTCMay 22, 08:00 UTC23h 55m
2026-05-21 QTR3R DOH → BHX May 21, 07:35 UTCMay 21, 10:25 UTC2h 50m
2026-05-20 QTR62J MAN → DOH May 20, 15:20 UTCMay 21, 05:10 UTC13h 50m
2026-05-19 QTR3R DOH → BHX May 19, 09:40 UTCMay 20, 03:40 UTC18h 0m
2026-05-19 QTR3R DOH → BHX May 19, 07:35 UTCMay 20, 03:40 UTC20h 5m
2026-05-19 QTR62J MAN → DOH May 19, 02:40 UTCMay 19, 05:35 UTC2h 55m
2026-05-18 QTR20K DOH → STN May 18, 20:25 UTCMay 18, 20:45 UTC20m
2026-05-17 QTR929 MNL → DOH May 17, 16:30 UTCMay 17, 23:05 UTC6h 35m
2026-05-17 QTR928 DOH → MNL May 17, 08:30 UTCMay 17, 14:40 UTC6h 10m
2026-05-16 QTR928 DOH → MNL May 16, 12:11 UTCMay 17, 10:40 UTC22h 30m
2026-05-16 QTR69N LOS → DOH May 16, 10:05 UTCMay 17, 08:40 UTC22h 35m
2026-05-16 QTR69N LOS → DOH May 16, 08:51 UTCMay 16, 12:45 UTC3h 55m
2026-05-15 QTR6T DOH → MAN May 15, 15:05 UTCMay 16, 06:01 UTC14h 56m
2026-05-14 QTR3R DOH → BHX May 14, 08:05 UTCMay 15, 03:40 UTC19h 35m
2026-05-14 QTR3R DOH → BHX May 14, 07:25 UTCMay 15, 03:40 UTC20h 15m
2026-05-14 QTR62J MAN → DOH May 14, 02:35 UTCMay 14, 05:15 UTC2h 40m
2026-05-13 QTR3R DOH → BHX May 13, 07:35 UTCMay 13, 12:40 UTC5h 5m
2026-05-12 QTR62J MAN → DOH May 12, 15:10 UTCMay 13, 05:20 UTC14h 10m
2026-05-11 QTR42Y DOH → OSL May 11, 15:25 UTCMay 12, 03:30 UTC12h 6m
2026-05-10 QTR3R DOH → BHX May 10, 08:05 UTCMay 11, 03:35 UTC19h 30m
2026-05-10 QTR3R DOH → BHX May 10, 07:25 UTCMay 11, 03:35 UTC20h 10m
2026-05-10 QTR62J MAN → DOH May 10, 02:30 UTCMay 10, 05:10 UTC2h 40m
2026-05-09 QTR935 MNL → DOH May 9, 02:45 UTCMay 9, 07:30 UTC4h 45m
2026-05-08 QTR934 DOH → MNL May 8, 19:50 UTCMay 9, 00:30 UTC4h 40m
2026-05-08 QTR934 DOH → MNL May 8, 00:05 UTCMay 9, 00:00 UTC23h 55m
2026-05-07 QTR53Y - May 7, 22:05 UTCMay 8, 21:10 UTC23h 5m
2026-05-07 QTR53Y - May 7, 21:10 UTCMay 8, 20:00 UTC22h 50m
2026-05-07 QTR52N ATL → DOH May 7, 14:35 UTCMay 7, 18:45 UTC4h 10m
2026-05-06 QTR52N ATL → DOH May 6, 23:00 UTCMay 7, 18:45 UTC19h 45m
2026-05-06 QTR52N ATL → DOH May 6, 17:25 UTCMay 7, 16:00 UTC22h 35m
2026-05-06 QTR892 DOH → PKX May 6, 08:25 UTCMay 6, 08:40 UTC15m
2026-05-05 QTR69N LOS → DOH May 5, 12:05 UTCMay 6, 08:40 UTC20h 35m
2026-05-05 QTR69N LOS → DOH May 5, 10:05 UTCMay 6, 08:40 UTC22h 35m
2026-05-05 QTR69N LOS → DOH May 5, 09:00 UTCMay 5, 13:35 UTC4h 35m
2026-05-04 QTR60L - May 4, 23:05 UTCMay 4, 23:20 UTC15m
2026-05-04 QTR935 MNL → DOH May 4, 02:19 UTCMay 4, 11:15 UTC8h 55m

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

Mode-S 06A138 frequently asked

What is Mode-S code 06A138?
06A138 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BAV.
Where is Mode-S 06A138 registered?
Mode-S code 06A138 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A138 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A138, octal 01520470, decimal 434,488.
What flights does 06A138 operate?
Mode-S 06A138 has broadcast 20 distinct callsigns, including QTR928, QTR929, QTR3R, QTR69N, QTR62J.