sensors Mode-S transponder

06A391

ICAO 24-bit transponder address · allocated to Qatar

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

Hex
06A391
Octal
01521621
Decimal
435,089
Country
QA
Tail
A7-BTB
Type
B77L
Broadcasting now · callsign QTR8160 · 35,000 ft
Flights observed
133
Distinct callsigns
20
Country
QA
Last broadcast
6h ago

Current position

06A391 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 06A391 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
QTR8356 Qatar Airways 20 2026-04-20
QTR8357 Qatar Airways 18 2026-04-18
QTR8942 Qatar Airways 7 2026-05-25
QTR8139 Qatar Airways 6 2026-05-11
QTR8476 Qatar Airways 3 2026-04-26
QTR8440 Qatar Airways 3 2026-05-05
QTR8140 Qatar Airways 3 2026-05-12
QTR8094 Qatar Airways 3 2026-04-29
QTR8985 Qatar Airways 2 2026-04-18
QTR8984 Qatar Airways 2 2026-04-18
QTR8970 Qatar Airways 2 2026-05-13
QTR8965 Qatar Airways 2 2026-04-22
QTR8963 Qatar Airways 2 2026-05-07
QTR8949 Qatar Airways 2 2026-05-27
QTR8477 Qatar Airways 2 2026-04-26
QTR8452 Qatar Airways 2 2026-05-02
QTR8441 Qatar Airways 2 2026-05-05
QTR8437 Qatar Airways 2 2026-04-24
QTR8430 Qatar Airways 2 2026-05-23
QTR8405 Qatar Airways 2 2026-05-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 QTR8160 AMS → DOH May 29, 09:55 UTCMay 30, 01:10 UTC15h 15m
2026-05-29 QTR8159 GRU → BOG May 29, 06:05 UTCMay 29, 07:35 UTC1h 30m
2026-05-27 QTR8949 SZX → DOH May 27, 21:10 UTCMay 28, 02:10 UTC5h 0m
2026-05-27 QTR8949 SZX → DOH May 27, 20:30 UTCMay 27, 20:40 UTC10m
2026-05-27 QTR47V MXP → ORD May 27, 05:45 UTCMay 27, 06:25 UTC40m
2026-05-27 QTR8612 DOH → AMD May 27, 02:09 UTCMay 27, 03:04 UTC55m
2026-05-26 QTR8258 CDG → DOH May 26, 15:49 UTCMay 26, 22:15 UTC6h 25m
2026-05-25 QTR8257 DOH → PRG May 25, 22:05 UTCMay 26, 13:19 UTC15h 15m
2026-05-25 QTR8942 DOH → CAN May 25, 11:45 UTCMay 25, 15:00 UTC3h 15m
2026-05-25 QTR8262 LGG → CDG May 25, 01:55 UTCMay 25, 07:25 UTC5h 30m
2026-05-24 QTR6E - May 24, 04:35 UTCMay 24, 20:35 UTC16h 0m
2026-05-24 QTR8431 GRU → REC May 24, 02:15 UTCMay 24, 02:30 UTC15m
2026-05-23 QTR8430 DOH → HKG May 23, 20:00 UTCMay 23, 20:30 UTC30m
2026-05-23 QTR8430 DOH → HKG May 23, 14:45 UTCMay 23, 18:05 UTC3h 20m
2026-05-23 QTR38T - May 23, 02:40 UTCMay 23, 08:05 UTC5h 25m
2026-05-22 QTR8214 MAD → MXP May 22, 22:40 UTCMay 23, 00:10 UTC1h 30m
2026-05-22 QTR7X DOH → MEL May 22, 04:15 UTCMay 22, 19:10 UTC14h 55m
2026-05-22 QTR8435 GRU → SDU May 22, 02:10 UTCMay 22, 02:25 UTC15m
2026-05-21 QTR8040 DOH → FRA May 21, 17:50 UTCMay 21, 23:35 UTC5h 45m
2026-05-21 QTR8955 HAN → DOH May 21, 14:00 UTCMay 21, 14:15 UTC15m
2026-05-20 QTR8954 DOH → HAN May 20, 16:20 UTCMay 21, 12:10 UTC19h 50m
2026-05-20 QTR8031 MUC → DOH May 20, 14:20 UTCMay 21, 12:10 UTC21h 50m
2026-05-20 QTR8031 MUC → DOH May 20, 13:15 UTCMay 21, 12:10 UTC22h 55m
2026-05-19 QTR8030 MUC → RFD May 19, 21:50 UTCMay 20, 10:50 UTC13h 1m
2026-05-19 QTR8401 HKG → DOH May 19, 19:50 UTCMay 19, 20:05 UTC15m
2026-05-18 QTR8400 IKA → HKG May 18, 22:20 UTCMay 19, 16:55 UTC18h 35m
2026-05-18 QTR8400 IKA → HKG May 18, 18:20 UTCMay 19, 16:55 UTC22h 34m
2026-05-18 QTR8398 DOH → HYD May 18, 16:30 UTCMay 19, 14:20 UTC21h 49m
2026-05-17 QTR8941 CAN → DOH May 17, 20:01 UTCMay 18, 12:05 UTC16h 5m
2026-05-17 QTR8940 DOH → CAN May 17, 11:30 UTCMay 17, 14:25 UTC2h 55m
2026-05-16 QTR20X - May 16, 19:40 UTCMay 17, 01:25 UTC5h 45m
2026-05-15 QTR29G - May 15, 20:10 UTCMay 16, 13:55 UTC17h 46m
2026-05-14 QTR8942 DOH → CAN May 14, 21:40 UTCMay 15, 14:45 UTC17h 5m
2026-05-14 QTR8942 DOH → CAN May 14, 01:20 UTCMay 14, 14:55 UTC13h 35m
2026-05-13 QTR8942 DOH → CAN May 13, 18:30 UTCMay 14, 14:55 UTC20h 25m
2026-05-13 QTR8942 DOH → CAN May 13, 17:10 UTCMay 14, 14:55 UTC21h 45m
2026-05-13 QTR8970 DOH → SGN May 13, 15:10 UTCMay 14, 14:15 UTC23h 5m
2026-05-13 QTR8970 DOH → SGN May 13, 13:35 UTCMay 14, 12:15 UTC22h 40m
2026-05-13 QTR8595 ORD → LGG May 13, 09:35 UTCMay 13, 10:05 UTC30m
2026-05-12 QTR8140 ORD → HNL May 12, 02:50 UTCMay 12, 03:25 UTC35m
2026-05-11 QTR8140 ORD → HNL May 11, 13:40 UTCMay 11, 22:35 UTC8h 55m
2026-05-11 QTR8139 MXP → ORD May 11, 08:10 UTCMay 11, 09:40 UTC1h 30m
2026-05-10 QTR8139 MXP → ORD May 10, 17:30 UTCMay 11, 05:15 UTC11h 45m
2026-05-10 QTR8139 MXP → ORD May 10, 08:50 UTCMay 10, 14:34 UTC5h 45m
2026-05-09 QTR20X - May 9, 18:50 UTCMay 10, 00:55 UTC6h 5m
2026-05-08 QTR79U - May 8, 22:05 UTCMay 9, 13:40 UTC15h 35m
2026-05-08 QTR8942 DOH → CAN May 8, 01:24 UTCMay 8, 15:20 UTC13h 55m
2026-05-07 QTR8961 PVG → DOH May 7, 13:00 UTCMay 8, 02:44 UTC13h 45m
2026-05-07 QTR8963 PVG → DOH May 7, 00:10 UTCMay 7, 14:05 UTC13h 55m
2026-05-06 QTR8963 PVG → DOH May 6, 13:20 UTCMay 7, 01:20 UTC11h 59m

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

Mode-S 06A391 frequently asked

What is Mode-S code 06A391?
06A391 is an ICAO 24-bit transponder address. Allocated to Qatar. Assigned to A7-BTB.
Where is Mode-S 06A391 registered?
Mode-S code 06A391 is allocated to Qatar (QA). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 06A391 broadcasting right now?
Yes. Mode-S 06A391 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 06A391, octal 01521621, decimal 435,089.
What flights does 06A391 operate?
Mode-S 06A391 has broadcast 20 distinct callsigns, including QTR8356, QTR8357, QTR8942, QTR8139, QTR8476.