Apparatus

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sensors Mode-S transponder

06A101

ICAO 24-bit transponder address · allocated to Qatar

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

Hex
06A101
Octal
01520401
Decimal
434,433
Country
QA
Tail
A7-ALM
Type
A359
No current signal · last broadcast 1d ago
Flights observed
223
Distinct callsigns
20
Country
QA
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 06A101.

Country allocation

The ICAO 24-bit address 06A101 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
QTR99X - 6 2026-06-25
QTR85R - 6 2026-07-11
QTR7C - 6 2026-07-12
QTR74N Qatar Airways 6 2026-06-11
QTR50K - 6 2026-07-05
QTR124 - 6 2026-06-17
QTR93P Qatar Airways 5 2026-07-25
QTR92Q - 5 2026-07-07
QTR69G Qatar Airways 5 2026-05-04
QTR36G - 5 2026-07-14
QTR9T - 4 2026-07-03
QTR955 Qatar Airways 4 2026-07-26
QTR954 Qatar Airways 4 2026-07-26
QTR8X Qatar Airways 4 2026-07-23
QTR88T - 4 2026-07-15
QTR841 Qatar Airways 4 2026-05-26
QTR56K Qatar Airways 4 2026-07-23
QTR4T Qatar Airways 4 2026-07-21
QTR4R Qatar Airways 4 2026-06-16
QTR49F Qatar Airways 4 2026-06-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QTR955 CGK → DOH Jul 26, 18:05 UTCJul 26, 22:15 UTC4h 10m
2026-07-26 QTR954 DOH → CGK Jul 26, 07:50 UTCJul 26, 15:35 UTC7h 45m
2026-07-25 QTR93P MPM → DOH Jul 25, 19:30 UTCJul 25, 20:10 UTC40m
2026-07-24 QTR41N - Jul 24, 22:25 UTCJul 24, 22:45 UTC20m
2026-07-24 QTR27G FCO → DOH Jul 24, 14:55 UTCJul 24, 19:55 UTC5h 0m
2026-07-23 QTR8X CMB → DOH Jul 23, 14:55 UTCJul 23, 21:00 UTC6h 5m
2026-07-23 QTR56K DOH → ZRH Jul 23, 08:45 UTCJul 23, 12:45 UTC4h 0m
2026-07-22 QTR1164 DOH → RUH Jul 22, 11:10 UTCJul 22, 11:20 UTC10m
2026-07-21 QTR4T NCE → DOH Jul 21, 15:50 UTCJul 21, 19:25 UTC3h 35m
2026-07-21 QTR055 DOH → BER Jul 21, 06:35 UTCJul 21, 07:20 UTC45m
2026-07-20 QTR194 - Jul 20, 14:55 UTCJul 20, 21:35 UTC6h 40m
2026-07-20 QTR43F - Jul 20, 06:30 UTCJul 20, 13:00 UTC6h 30m
2026-07-19 QTR1436 ALG → DOH Jul 19, 21:55 UTCJul 20, 03:40 UTC5h 45m
2026-07-19 QTR1435 - Jul 19, 14:50 UTCJul 19, 15:30 UTC40m
2026-07-18 QTR18M - Jul 18, 15:05 UTCJul 18, 21:50 UTC6h 45m
2026-07-18 QTR83R - Jul 18, 08:25 UTCJul 18, 13:00 UTC4h 35m
2026-07-17 QTR8X CMB → DOH Jul 17, 14:30 UTCJul 17, 20:25 UTC5h 55m
2026-07-17 QTR56K - Jul 17, 12:25 UTCJul 17, 12:45 UTC20m
2026-07-17 QTR56K - Jul 17, 08:45 UTCJul 17, 12:19 UTC3h 35m
2026-07-16 QTR93P - Jul 16, 20:09 UTCJul 16, 20:55 UTC45m
2026-07-15 QTR41N - Jul 15, 22:55 UTCJul 15, 23:15 UTC20m
2026-07-15 QTR88T - Jul 15, 06:35 UTCJul 15, 06:55 UTC20m
2026-07-14 QTR36G - Jul 14, 20:40 UTCJul 15, 03:10 UTC6h 29m
2026-07-14 QTR40W - Jul 14, 12:15 UTCJul 14, 18:15 UTC6h 0m
2026-07-14 QTR1007 - Jul 14, 08:45 UTCJul 14, 09:10 UTC25m
2026-07-14 QTR59N - Jul 14, 05:15 UTCJul 14, 06:05 UTC50m
2026-07-14 QTR41U - Jul 14, 02:35 UTCJul 14, 02:50 UTC15m
2026-07-13 QTR41U - Jul 13, 21:30 UTCJul 14, 00:55 UTC3h 25m
2026-07-13 QTR1P SYD → DOH Jul 13, 13:20 UTCJul 13, 14:00 UTC40m
2026-07-12 QTR36G - Jul 12, 20:50 UTCJul 13, 03:05 UTC6h 15m
2026-07-12 QTR40W DOH → AMS Jul 12, 12:15 UTCJul 12, 18:55 UTC6h 40m
2026-07-12 QTR7C - Jul 12, 01:50 UTCJul 12, 02:45 UTC55m
2026-07-11 QTR7C - Jul 11, 23:10 UTCJul 11, 23:20 UTC10m
2026-07-11 QTR85R - Jul 11, 20:40 UTCJul 11, 20:50 UTC10m
2026-07-11 QTR1165 - Jul 11, 12:40 UTCJul 11, 13:10 UTC30m
2026-07-11 QTR1164 - Jul 11, 09:40 UTCJul 11, 10:10 UTC30m
2026-07-10 QTR7C - Jul 10, 22:55 UTCJul 11, 02:30 UTC3h 35m
2026-07-10 QTR85R - Jul 10, 20:55 UTCJul 10, 21:05 UTC10m
2026-07-10 QTR85R - Jul 10, 16:55 UTCJul 10, 18:00 UTC1h 5m
2026-07-10 QTR67G - Jul 10, 14:10 UTCJul 10, 14:40 UTC30m
2026-07-10 QTR67G - Jul 10, 09:10 UTCJul 10, 12:55 UTC3h 45m
2026-07-10 QTR8J - Jul 10, 02:55 UTCJul 10, 06:50 UTC3h 55m
2026-07-10 QTR8J - Jul 10, 00:50 UTCJul 10, 02:45 UTC1h 55m
2026-07-09 QTR83K - Jul 9, 17:20 UTCJul 9, 20:50 UTC3h 30m
2026-07-09 QTR47Q - Jul 9, 11:30 UTCJul 9, 12:00 UTC30m
2026-07-09 QTR5E - Jul 9, 00:15 UTCJul 9, 07:30 UTC7h 15m
2026-07-08 QTR93P - Jul 8, 19:25 UTCJul 8, 20:05 UTC40m
2026-07-07 QTR41N - Jul 7, 22:35 UTCJul 7, 22:45 UTC10m
2026-07-07 QTR27G FCO → DOH Jul 7, 14:30 UTCJul 7, 19:35 UTC5h 5m
2026-07-07 QTR92Q - Jul 7, 08:55 UTCJul 7, 12:05 UTC3h 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-ALM page for operator, model, and routing details .

Mode-S 06A101 frequently asked

What is Mode-S code 06A101?
06A101 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-ALM.
Where is Mode-S 06A101 registered?
Mode-S code 06A101 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A101 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A101, octal 01520401, decimal 434,433.
What flights does 06A101 operate?
Mode-S 06A101 has broadcast 20 distinct callsigns, including QTR99X, QTR85R, QTR7C, QTR74N, QTR50K.