Apparatus

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sensors Mode-S transponder

06A141

ICAO 24-bit transponder address · allocated to Qatar

Currently assigned to A7-BFH · BOEING 777-200LR

Hex
06A141
Octal
01520501
Decimal
434,497
Country
QA
Tail
A7-BFH
Type
B77L
No current signal · last broadcast Jul 26, 22:10 UTC
Flights observed
297
Distinct callsigns
20
Country
QA
Last broadcast
Jul 26, 22:10 UTC

Last known position

Most recent position reported by Mode-S 06A141.

Country allocation

The ICAO 24-bit address 06A141 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
QTR8142 - 12 2026-07-08
QTR8941 Qatar Airways 6 2026-07-17
QTR8403 Qatar Airways 6 2026-05-13
QTR8402 Qatar Airways 6 2026-05-12
QTR8473 Qatar Airways 5 2026-07-25
QTR8082 Qatar Airways 5 2026-05-21
QTR40L - 5 2026-06-18
QTR8A Qatar Airways 4 2026-04-17
QTR8948 Qatar Airways 4 2026-07-21
QTR8812 Qatar Airways 4 2026-07-20
QTR87J Qatar Airways 4 2026-06-19
QTR8472 Qatar Airways 4 2026-07-25
QTR8465 - 4 2026-07-11
QTR8464 - 4 2026-07-11
QTR8406 - 4 2026-07-04
QTR8175 Qatar Airways 4 2026-04-21
QTR8152 Qatar Airways 4 2026-06-01
QTR8099 Qatar Airways 4 2026-04-30
QTR72U Qatar Airways 4 2026-07-03
QTR6C Qatar Airways 4 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 QTR15R DOH → MLE Jul 26, 21:40 UTCJul 26, 22:10 UTC30m
2026-07-26 QTR32E - Jul 26, 16:05 UTCJul 26, 19:30 UTC3h 25m
2026-07-26 QTR8957 HAN → DOH Jul 26, 07:05 UTCJul 26, 13:30 UTC6h 25m
2026-07-25 QTR8956 DOH → HAN Jul 25, 22:00 UTCJul 26, 03:45 UTC5h 45m
2026-07-25 QTR8473 HKG → DOH Jul 25, 19:30 UTCJul 25, 20:20 UTC50m
2026-07-25 QTR8473 HKG → DOH Jul 25, 13:35 UTCJul 25, 19:25 UTC5h 50m
2026-07-25 QTR8473 HKG → DOH Jul 25, 12:20 UTCJul 25, 12:30 UTC10m
2026-07-25 QTR8472 DOH → HKG Jul 25, 09:15 UTCJul 25, 09:30 UTC15m
2026-07-25 QTR8472 DOH → HKG Jul 25, 00:30 UTCJul 25, 08:20 UTC7h 50m
2026-07-24 QTR8278 EDI → DUB Jul 24, 16:10 UTCJul 24, 21:55 UTC5h 45m
2026-07-24 QTR8277 DOH → MAD Jul 24, 09:10 UTCJul 24, 14:05 UTC4h 55m
2026-07-24 QTR8409 HKG → DOH Jul 24, 01:55 UTCJul 24, 05:50 UTC3h 55m
2026-07-24 QTR8409 HKG → DOH Jul 24, 00:10 UTCJul 24, 00:25 UTC15m
2026-07-23 QTR8408 SIN → HKG Jul 23, 21:55 UTCJul 23, 22:20 UTC25m
2026-07-23 QTR8408 SIN → HKG Jul 23, 14:30 UTCJul 23, 20:30 UTC6h 0m
2026-07-23 QTR35T - Jul 23, 12:05 UTCJul 23, 12:45 UTC40m
2026-07-23 QTR8726 DOH → DWC Jul 23, 07:40 UTCJul 23, 08:00 UTC20m
2026-07-22 QTR8949 SZX → DOH Jul 22, 20:50 UTCJul 23, 03:55 UTC7h 5m
2026-07-21 QTR8948 DOH → SZX Jul 21, 23:55 UTCJul 22, 15:35 UTC15h 40m
2026-07-21 QTR87M BER → DOH Jul 21, 13:10 UTCJul 21, 20:00 UTC6h 50m
2026-07-21 QTR59K DOH → BER Jul 21, 01:50 UTCJul 21, 08:40 UTC6h 50m
2026-07-20 QTR8813 PTY → LGG Jul 20, 07:35 UTCJul 20, 09:45 UTC2h 10m
2026-07-20 QTR8812 AUS → BOG Jul 20, 02:05 UTCJul 20, 04:40 UTC2h 35m
2026-07-19 QTR8812 AUS → BOG Jul 19, 06:20 UTCJul 20, 04:40 UTC22h 20m
2026-07-19 QTR8433 - Jul 19, 04:25 UTCJul 20, 04:15 UTC23h 50m
2026-07-19 QTR8433 - Jul 19, 02:35 UTCJul 19, 02:55 UTC20m
2026-07-18 QTR8432 - Jul 18, 22:55 UTCJul 18, 23:25 UTC30m
2026-07-18 QTR8432 - Jul 18, 19:55 UTCJul 18, 20:15 UTC20m
2026-07-18 QTR8432 - Jul 18, 12:20 UTCJul 18, 17:30 UTC5h 10m
2026-07-17 QTR8941 CAN → DOH Jul 17, 12:50 UTCJul 18, 04:35 UTC15h 46m
2026-07-17 QTR15R - Jul 17, 05:20 UTCJul 17, 08:25 UTC3h 5m
2026-07-16 QTR32E - Jul 16, 23:29 UTCJul 17, 02:54 UTC3h 25m
2026-07-16 QTR76G - Jul 16, 15:25 UTCJul 16, 21:05 UTC5h 40m
2026-07-16 QTR76G ORD → MXP Jul 16, 05:05 UTCJul 16, 13:20 UTC8h 15m
2026-07-15 QTR31T MXP → ORD Jul 15, 18:00 UTCJul 16, 02:45 UTC8h 45m
2026-07-15 QTR31T - Jul 15, 06:55 UTCJul 15, 13:00 UTC6h 5m
2026-07-14 QTR20X - Jul 14, 19:30 UTCJul 15, 02:05 UTC6h 34m
2026-07-14 QTR29G - Jul 14, 12:20 UTCJul 14, 16:15 UTC3h 55m
2026-07-14 QTR29G - Jul 14, 11:35 UTCJul 14, 12:15 UTC40m
2026-07-14 QTR29G - Jul 14, 08:55 UTCJul 14, 09:35 UTC40m
2026-07-14 QTR8939 - Jul 14, 03:40 UTCJul 14, 04:00 UTC20m
2026-07-13 QTR8939 - Jul 13, 22:00 UTCJul 14, 03:35 UTC5h 35m
2026-07-13 QTR8938 - Jul 13, 09:35 UTCJul 13, 15:35 UTC6h 0m
2026-07-13 QTR8680 - Jul 13, 00:35 UTCJul 13, 06:35 UTC6h 0m
2026-07-11 QTR8465 - Jul 11, 20:25 UTCJul 12, 02:05 UTC5h 40m
2026-07-11 QTR8465 - Jul 11, 18:40 UTCJul 11, 18:50 UTC10m
2026-07-11 QTR8464 - Jul 11, 07:50 UTCJul 11, 16:15 UTC8h 25m
2026-07-10 QTR8240 - Jul 10, 20:45 UTCJul 11, 02:40 UTC5h 55m
2026-07-10 QTR8240 - Jul 10, 16:30 UTCJul 10, 18:05 UTC1h 35m
2026-07-10 QTR91P - Jul 10, 08:45 UTCJul 10, 14:30 UTC5h 45m

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

Mode-S 06A141 frequently asked

What is Mode-S code 06A141?
06A141 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BFH.
Where is Mode-S 06A141 registered?
Mode-S code 06A141 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A141 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A141, octal 01520501, decimal 434,497.
What flights does 06A141 operate?
Mode-S 06A141 has broadcast 20 distinct callsigns, including QTR8142, QTR8941, QTR8403, QTR8402, QTR8473.