sensors Mode-S transponder

06A103

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-ALO · AIRBUS A-350-900

Hex
06A103
Octal
01520403
Decimal
434,435
Country
QA
Tail
A7-ALO
Type
A359
No current signal · last broadcast 5h ago
Flights observed
165
Distinct callsigns
20
Country
QA
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 06A103.

Country allocation

The ICAO 24-bit address 06A103 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
QTR954 Qatar Airways 9 2026-05-26
QTR956 Qatar Airways 7 2026-06-04
QTR891 - 7 2026-07-05
QTR957 Qatar Airways 6 2026-05-29
QTR955 Qatar Airways 6 2026-05-14
QTR890 - 5 2026-07-13
QTR83R - 5 2026-07-13
QTR74N Qatar Airways 5 2026-04-16
QTR69G Qatar Airways 5 2026-05-10
QTR49F Qatar Airways 5 2026-04-16
QTR30T Qatar Airways 5 2026-05-25
QTR92Q - 4 2026-07-04
QTR881 Qatar Airways 4 2026-06-02
QTR18M - 4 2026-07-13
QTR959 Qatar Airways 3 2026-06-03
QTR7C Qatar Airways 3 2026-05-13
QTR36G - 3 2026-07-03
QTR25J - 3 2026-07-08
QTR99X Qatar Airways 2 2026-05-20
QTR98E - 2 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 QTR890 - Jul 13, 23:15 UTCJul 14, 05:00 UTC5h 45m
2026-07-13 QTR18M - Jul 13, 14:25 UTCJul 13, 20:50 UTC6h 25m
2026-07-13 QTR83R - Jul 13, 07:40 UTCJul 13, 12:25 UTC4h 45m
2026-07-13 QTR83R - Jul 13, 05:10 UTCJul 13, 05:50 UTC40m
2026-07-12 QTR829 - Jul 12, 20:10 UTCJul 13, 02:01 UTC5h 50m
2026-07-12 QTR826 - Jul 12, 06:25 UTCJul 12, 13:10 UTC6h 45m
2026-07-11 QTR114 - Jul 11, 21:05 UTCJul 12, 00:15 UTC3h 10m
2026-07-11 QTR7K - Jul 11, 13:05 UTCJul 11, 13:35 UTC30m
2026-07-11 QTR1007 - Jul 11, 08:01 UTCJul 11, 08:45 UTC45m
2026-07-11 QTR59N - Jul 11, 05:20 UTCJul 11, 06:01 UTC40m
2026-07-10 QTR7F - Jul 10, 16:35 UTCJul 11, 01:40 UTC9h 6m
2026-07-10 QTR6F - Jul 10, 08:10 UTCJul 10, 13:40 UTC5h 30m
2026-07-10 QTR9B DOH → ZRH Jul 10, 00:35 UTCJul 10, 06:10 UTC5h 35m
2026-07-09 QTR2R - Jul 9, 08:20 UTCJul 9, 13:40 UTC5h 20m
2026-07-09 QTR53X DOH → ISU Jul 9, 02:50 UTCJul 9, 04:50 UTC2h 0m
2026-07-08 QTR53X DOH → ISU Jul 8, 23:40 UTCJul 9, 02:45 UTC3h 5m
2026-07-08 QTR18M - Jul 8, 14:25 UTCJul 8, 21:00 UTC6h 35m
2026-07-08 QTR83R - Jul 8, 05:20 UTCJul 8, 12:25 UTC7h 5m
2026-07-08 QTR25J - Jul 8, 00:50 UTCJul 8, 01:05 UTC15m
2026-07-07 QTR1K - Jul 7, 18:25 UTCJul 7, 19:20 UTC55m
2026-07-07 QTR7G - Jul 7, 09:40 UTCJul 7, 10:20 UTC40m
2026-07-07 QTR3C - Jul 7, 06:45 UTCJul 7, 07:35 UTC50m
2026-07-06 QTR41U MXP → DOH Jul 6, 21:20 UTCJul 7, 02:35 UTC5h 15m
2026-07-06 QTR93C DOH → MXP Jul 6, 13:05 UTCJul 6, 18:40 UTC5h 35m
2026-07-05 QTR891 - Jul 5, 20:10 UTCJul 6, 01:50 UTC5h 40m
2026-07-05 QTR891 - Jul 5, 04:50 UTCJul 6, 01:50 UTC21h 0m
2026-07-05 QTR891 - Jul 5, 03:05 UTCJul 6, 01:50 UTC22h 45m
2026-07-05 QTR891 - Jul 5, 01:15 UTCJul 5, 23:55 UTC22h 40m
2026-07-04 QTR890 - Jul 4, 23:25 UTCJul 5, 21:55 UTC22h 30m
2026-07-04 QTR27G FCO → DOH Jul 4, 14:30 UTCJul 4, 19:45 UTC5h 15m
2026-07-04 QTR92Q - Jul 4, 09:45 UTCJul 4, 11:45 UTC2h 0m
2026-07-04 QTR92Q - Jul 4, 06:05 UTCJul 4, 09:40 UTC3h 35m
2026-07-03 QTR827 - Jul 3, 20:15 UTCJul 4, 02:20 UTC6h 5m
2026-07-03 QTR826 - Jul 3, 08:30 UTCJul 3, 14:55 UTC6h 25m
2026-07-03 QTR36G - Jul 3, 02:05 UTCJul 3, 02:35 UTC30m
2026-07-02 QTR36G - Jul 2, 20:50 UTCJul 3, 00:50 UTC4h 0m
2026-07-02 QTR40W - Jul 2, 12:15 UTCJul 2, 18:20 UTC6h 5m
2026-07-01 QTR1K DOH → DOH Jul 1, 18:30 UTCJul 2, 01:10 UTC6h 40m
2026-06-30 QTR891 - Jun 30, 20:00 UTCJul 1, 01:25 UTC5h 25m
2026-06-30 QTR891 - Jun 30, 04:55 UTCJul 1, 01:25 UTC20h 30m
2026-06-30 QTR891 - Jun 30, 02:55 UTCJul 1, 01:25 UTC22h 30m
2026-06-30 QTR890 - Jun 30, 01:04 UTCJul 1, 00:45 UTC23h 40m
2026-06-29 QTR1L - Jun 29, 19:39 UTCJun 29, 20:35 UTC55m
2026-06-29 QTR97P - Jun 29, 16:15 UTCJun 29, 17:05 UTC50m
2026-06-05 QTR890 DOH → HGH Jun 5, 01:35 UTCJun 5, 20:30 UTC18h 55m
2026-06-04 QTR890 DOH → HGH Jun 4, 11:45 UTCJun 5, 04:50 UTC17h 5m
2026-06-04 QTR956 DOH → CGK Jun 4, 02:05 UTCJun 4, 08:05 UTC6h 0m
2026-06-03 QTR959 CGK → DOH Jun 3, 09:45 UTCJun 3, 09:50 UTC5m
2026-06-03 QTR959 CGK → DOH Jun 3, 05:55 UTCJun 3, 07:30 UTC1h 35m
2026-06-03 QTR959 CGK → DOH Jun 3, 02:05 UTCJun 3, 02:20 UTC15m

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

Mode-S 06A103 frequently asked

What is Mode-S code 06A103?
06A103 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-ALO.
Where is Mode-S 06A103 registered?
Mode-S code 06A103 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A103 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 06A103, octal 01520403, decimal 434,435.
What flights does 06A103 operate?
Mode-S 06A103 has broadcast 20 distinct callsigns, including QTR954, QTR956, QTR891, QTR957, QTR955.