Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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
187
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
QTR69N - 14 2026-07-11
QTR3R - 12 2026-06-23
QTR875 - 11 2026-07-07
QTR77T Qatar Airways 6 2026-06-27
QTR62J - 6 2026-06-22
QTR933 - 5 2026-07-13
QTR5B Qatar Airways 5 2026-06-27
QTR22Y - 5 2026-07-08
QTR932 - 4 2026-07-12
QTR841 Qatar Airways 4 2026-04-23
QTR6T - 4 2026-07-10
QTR60L - 4 2026-05-04
QTR55J - 4 2026-07-08
QTR52N - 4 2026-06-26
QTR934 Qatar Airways 3 2026-05-08
QTR874 - 3 2026-07-02
QTR80C - 3 2026-07-09
QTR60F - 3 2026-07-09

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 QTR933 - Jul 13, 11:15 UTCJul 13, 19:40 UTC8h 25m
2026-07-12 QTR932 - Jul 12, 23:45 UTCJul 13, 09:00 UTC9h 15m
2026-07-12 QTR933 - Jul 12, 15:10 UTCJul 12, 19:20 UTC4h 10m
2026-07-12 QTR933 - Jul 12, 11:10 UTCJul 12, 15:05 UTC3h 55m
2026-07-11 QTR932 - Jul 11, 23:35 UTCJul 12, 08:50 UTC9h 15m
2026-07-11 QTR69N - Jul 11, 08:25 UTCJul 11, 15:30 UTC7h 5m
2026-07-10 QTR6T - Jul 10, 22:15 UTCJul 11, 05:05 UTC6h 50m
2026-07-10 QTR933 - Jul 10, 11:35 UTCJul 10, 20:00 UTC8h 25m
2026-07-10 QTR932 - Jul 10, 00:15 UTCJul 10, 09:15 UTC9h 0m
2026-07-09 QTR60F - Jul 9, 15:20 UTCJul 9, 21:45 UTC6h 25m
2026-07-09 QTR80C - Jul 9, 06:05 UTCJul 9, 13:10 UTC7h 5m
2026-07-08 QTR22Y - Jul 8, 22:50 UTCJul 9, 03:25 UTC4h 35m
2026-07-08 QTR55J - Jul 8, 17:50 UTCJul 8, 20:40 UTC2h 50m
2026-07-08 QTR8H LHE → DOH Jul 8, 06:00 UTCJul 8, 08:55 UTC2h 55m
2026-07-08 QTR18H - Jul 8, 01:05 UTCJul 8, 03:40 UTC2h 35m
2026-07-07 QTR60F - Jul 7, 16:20 UTCJul 7, 22:45 UTC6h 25m
2026-07-07 QTR80C - Jul 7, 04:50 UTCJul 7, 12:10 UTC7h 20m
2026-07-07 QTR875 - Jul 7, 01:10 UTCJul 7, 01:25 UTC15m
2026-07-06 QTR875 - Jul 6, 19:05 UTCJul 6, 23:35 UTC4h 30m
2026-07-06 QTR875 - Jul 6, 00:05 UTCJul 6, 23:35 UTC23h 30m
2026-07-05 QTR875 - Jul 5, 23:45 UTCJul 6, 21:35 UTC21h 50m
2026-07-05 QTR56U - Jul 5, 17:40 UTCJul 5, 20:40 UTC3h 0m
2026-07-05 QTR79Q - Jul 5, 12:40 UTCJul 5, 15:00 UTC2h 20m
2026-07-04 QTR1185 - Jul 4, 22:20 UTCJul 5, 04:30 UTC6h 10m
2026-07-04 QTR1C LHR → DOH Jul 4, 12:30 UTCJul 4, 19:15 UTC6h 45m
2026-07-04 QTR73P DOH → KUL Jul 4, 02:15 UTCJul 4, 07:00 UTC4h 45m
2026-07-03 QTR88R - Jul 3, 14:50 UTCJul 3, 20:25 UTC5h 35m
2026-07-03 QTR3E DOH → AMS Jul 3, 05:35 UTCJul 3, 12:30 UTC6h 55m
2026-07-02 QTR875 - Jul 2, 18:35 UTCJul 3, 01:15 UTC6h 40m
2026-07-02 QTR875 - Jul 2, 02:05 UTCJul 3, 01:15 UTC23h 10m
2026-07-02 QTR874 - Jul 2, 00:20 UTCJul 2, 21:30 UTC21h 10m
2026-07-01 QTR60F - Jul 1, 14:35 UTCJul 1, 20:55 UTC6h 20m
2026-07-01 QTR80C - Jul 1, 05:15 UTCJul 1, 12:05 UTC6h 50m
2026-06-30 QTR1083 KWI → DOH Jun 30, 13:35 UTCJun 30, 17:40 UTC4h 5m
2026-06-29 QTR23V - Jun 29, 20:15 UTCJun 29, 20:40 UTC25m
2026-06-29 QTR73C - Jun 29, 12:55 UTCJun 29, 15:19 UTC2h 25m
2026-06-28 QTR8H LHE → DOH Jun 28, 23:44 UTCJun 29, 08:04 UTC8h 20m
2026-06-28 QTR69N MAN → DOH Jun 28, 07:29 UTCJun 28, 14:19 UTC6h 50m
2026-06-27 QTR6T DOH → MAN Jun 27, 22:04 UTCJun 28, 05:09 UTC7h 5m
2026-06-27 QTR5B JFK → IAH Jun 27, 15:14 UTCJun 27, 19:15 UTC4h 0m
2026-06-27 QTR77T DOH → VIE Jun 27, 11:09 UTCJun 27, 11:44 UTC35m
2026-06-27 QTR77T DOH → VIE Jun 27, 07:45 UTCJun 27, 08:35 UTC50m
2026-06-26 QTR1R DOH → ATH Jun 26, 21:04 UTCJun 27, 03:30 UTC6h 25m
2026-06-26 QTR52N DOH → MAN Jun 26, 11:40 UTCJun 26, 18:29 UTC6h 50m
2026-06-25 QTR1U - Jun 25, 23:59 UTCJun 26, 08:20 UTC8h 20m
2026-06-25 QTR933 - Jun 25, 10:59 UTCJun 25, 19:29 UTC8h 30m
2026-06-24 QTR932 - Jun 24, 23:34 UTCJun 25, 08:24 UTC8h 50m
2026-06-24 QTR65H DOH → MIA Jun 24, 20:24 UTCJun 24, 20:49 UTC25m
2026-06-24 QTR65H DOH → MIA Jun 24, 14:55 UTCJun 24, 18:55 UTC4h 0m
2026-06-24 QTR54E DOH → CDG Jun 24, 05:40 UTCJun 24, 12:04 UTC6h 25m

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, QTR69N, QTR3R, QTR875.