Apparatus

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sensors Mode-S transponder

06A104

ICAO 24-bit transponder address · allocated to Qatar

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

Hex
06A104
Octal
01520404
Decimal
434,436
Country
QA
Tail
A7-ALP
Type
A359
No current signal · last broadcast 1h ago
Flights observed
89
Distinct callsigns
20
Country
QA
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 06A104.

Country allocation

The ICAO 24-bit address 06A104 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
QTR891 Qatar Airways 6 2026-06-03
QTR8Q Qatar Airways 4 2026-06-08
QTR840 Qatar Airways 4 2026-05-25
QTR957 Qatar Airways 3 2026-06-02
QTR92Q Qatar Airways 3 2026-06-05
QTR881 Qatar Airways 3 2026-05-20
QTR85R Qatar Airways 3 2026-06-05
QTR5G Qatar Airways 3 2026-05-11
QTR4R Qatar Airways 3 2026-05-31
QTR16K Qatar Airways 3 2026-05-26
QTR124 Qatar Airways 3 2026-05-31
QTR99X Qatar Airways 2 2026-05-14
QTR956 Qatar Airways 2 2026-06-02
QTR954 Qatar Airways 2 2026-04-27
QTR83K Qatar Airways 2 2026-06-05
QTR7T - 2 2026-05-19
QTR69G Qatar Airways 2 2026-04-26
QTR5N Qatar Airways 2 2026-05-13
QTR49Q Qatar Airways 2 2026-06-08
QTR3J Qatar Airways 2 2026-04-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-08 QTR8Q LHR → DOH Jun 8, 11:55 UTCJun 8, 13:00 UTC1h 5m
2026-06-08 QTR49Q CPH → DOH Jun 8, 05:15 UTCJun 8, 05:45 UTC30m
2026-06-07 QTR1237 RUH → DOH Jun 7, 22:40 UTCJun 7, 23:15 UTC35m
2026-06-07 QTR1236 DOH → RUH Jun 7, 18:50 UTCJun 7, 19:20 UTC30m
2026-06-07 QTR1241 RUH → DOH Jun 7, 13:45 UTCJun 7, 14:25 UTC40m
2026-06-06 QTR27G FCO → DOH Jun 6, 14:34 UTCJun 6, 19:19 UTC4h 45m
2026-06-05 QTR92Q MAN → DOH Jun 5, 23:00 UTCJun 6, 11:35 UTC12h 35m
2026-06-05 QTR85R ALG → DOH Jun 5, 20:15 UTCJun 5, 20:45 UTC30m
2026-06-05 QTR83K DOH → ARN Jun 5, 00:10 UTCJun 5, 00:45 UTC35m
2026-06-04 QTR83K DOH → ARN Jun 4, 21:05 UTCJun 4, 22:50 UTC1h 45m
2026-06-03 QTR891 HGH → DOH Jun 3, 21:10 UTCJun 4, 16:50 UTC19h 40m
2026-06-03 QTR891 HGH → DOH Jun 3, 19:35 UTCJun 4, 16:50 UTC21h 15m
2026-06-03 QTR891 HGH → DOH Jun 3, 03:50 UTCJun 3, 23:05 UTC19h 15m
2026-06-03 QTR891 HGH → DOH Jun 3, 01:35 UTCJun 3, 23:05 UTC21h 30m
2026-06-02 QTR957 CGK → DOH Jun 2, 11:45 UTCJun 3, 04:45 UTC17h 0m
2026-06-02 QTR956 DOH → CGK Jun 2, 00:10 UTCJun 2, 08:10 UTC8h 0m
2026-05-31 QTR7C DOH → JNB May 31, 23:10 UTCMay 31, 23:20 UTC10m
2026-05-31 QTR85R ALG → DOH May 31, 21:15 UTCMay 31, 21:25 UTC10m
2026-05-31 QTR85R ALG → DOH May 31, 17:35 UTCMay 31, 18:15 UTC40m
2026-05-31 QTR124 MXP → DOH May 31, 09:35 UTCMay 31, 14:45 UTC5h 10m
2026-05-31 QTR4R LHE → DOH May 31, 00:30 UTCMay 31, 00:40 UTC10m
2026-05-30 QTR4R LHE → DOH May 30, 01:05 UTCMay 31, 00:40 UTC23h 35m
2026-05-29 QTR2V DOH → MAN May 29, 16:05 UTCMay 30, 01:10 UTC9h 5m
2026-05-28 QTR24G DOH → MCT May 28, 17:40 UTCMay 28, 19:20 UTC1h 40m
2026-05-27 QTR8Q LHR → DOH May 27, 17:05 UTCMay 27, 20:55 UTC3h 50m
2026-05-26 QTR49Q CPH → DOH May 26, 22:20 UTCMay 27, 12:30 UTC14h 10m
2026-05-26 QTR16K CPH → DOH May 26, 19:25 UTCMay 26, 20:09 UTC45m
2026-05-25 QTR840 DOH → HKT May 25, 02:20 UTCMay 25, 18:30 UTC16h 10m
2026-05-24 QTR840 DOH → HKT May 24, 17:10 UTCMay 25, 17:00 UTC23h 50m
2026-05-24 QTR840 DOH → HKT May 24, 16:45 UTCMay 25, 03:45 UTC11h 0m
2026-05-24 QTR840 DOH → HKT May 24, 01:55 UTCMay 24, 18:10 UTC16h 15m
2026-05-23 QTR25A DOH → BRU May 23, 18:40 UTCMay 23, 19:10 UTC30m
2026-05-22 QTR957 CGK → DOH May 22, 15:25 UTCMay 22, 15:55 UTC30m
2026-05-22 QTR957 CGK → DOH May 22, 11:40 UTCMay 22, 11:55 UTC15m
2026-05-22 QTR956 DOH → CGK May 22, 02:35 UTCMay 22, 07:50 UTC5h 15m
2026-05-21 QTR8Q LHR → DOH May 21, 20:20 UTCMay 21, 20:55 UTC35m
2026-05-21 QTR8Q LHR → DOH May 21, 17:15 UTCMay 21, 19:10 UTC1h 55m
2026-05-20 QTR881 CKG → DOH May 20, 21:40 UTCMay 21, 12:40 UTC15h 0m
2026-05-20 QTR881 CKG → DOH May 20, 03:05 UTCMay 21, 00:55 UTC21h 51m
2026-05-20 QTR881 CKG → DOH May 20, 01:10 UTCMay 21, 00:55 UTC23h 46m
2026-05-19 QTR2R MAN → DOH May 19, 09:05 UTCMay 19, 13:40 UTC4h 35m
2026-05-19 QTR7T - May 19, 02:15 UTCMay 19, 05:45 UTC3h 30m
2026-05-18 QTR27G FCO → DOH May 18, 14:40 UTCMay 18, 19:10 UTC4h 29m
2026-05-17 QTR92Q MAN → DOH May 17, 19:50 UTCMay 18, 12:00 UTC16h 10m
2026-05-17 QTR891 HGH → DOH May 17, 03:30 UTCMay 17, 23:05 UTC19h 35m
2026-05-17 QTR891 HGH → DOH May 17, 01:20 UTCMay 17, 23:05 UTC21h 45m
2026-05-16 QTR890 DOH → HGH May 16, 23:40 UTCMay 17, 23:00 UTC23h 20m
2026-05-16 QTR124 MXP → DOH May 16, 09:45 UTCMay 16, 14:31 UTC4h 45m
2026-05-15 QTR4R LHE → DOH May 15, 15:15 UTCMay 16, 06:20 UTC15h 6m
2026-05-14 QTR99X DOH → CPH May 14, 14:40 UTCMay 14, 16:45 UTC2h 5m

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

Mode-S 06A104 frequently asked

What is Mode-S code 06A104?
06A104 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-ALP.
Where is Mode-S 06A104 registered?
Mode-S code 06A104 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A104 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A104, octal 01520404, decimal 434,436.
What flights does 06A104 operate?
Mode-S 06A104 has broadcast 20 distinct callsigns, including QTR891, QTR8Q, QTR840, QTR957, QTR92Q.