sensors Mode-S transponder
06A0DC
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-BAS · BOEING 777-300ER
- Hex
- 06A0DC
- Octal
- 01520334
- Decimal
- 434,396
- Country
- QA
- Tail
- A7-BAS
- Type
- B77W
- Flights observed
- 213
- Distinct callsigns
- 20
- Country
- QA
- Last broadcast
- Jul 26, 23:00 UTC
Current position
Country allocation
The ICAO 24-bit address 06A0DC 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 |
|---|---|---|---|
| QTR22Y | - | 21 | 2026-07-05 |
| QTR55J | - | 19 | 2026-07-05 |
| QTR3R | - | 10 | 2026-07-09 |
| QTR642 | Qatar Airways | 9 | 2026-07-04 |
| QTR62J | - | 9 | 2026-07-08 |
| QTR643 | Qatar Airways | 7 | 2026-07-04 |
| QTR60L | - | 6 | 2026-04-15 |
| QTR56U | - | 6 | 2026-07-09 |
| QTR875 | Qatar Airways | 5 | 2026-07-23 |
| QTR27L | Qatar Airways | 5 | 2026-07-25 |
| QTR874 | Qatar Airways | 4 | 2026-07-26 |
| QTR79Q | - | 4 | 2026-07-09 |
| QTR69N | Qatar Airways | 4 | 2026-04-15 |
| QTR401 | - | 4 | 2026-07-17 |
| QTR8H | Qatar Airways | 3 | 2026-07-03 |
| QTR841 | Qatar Airways | 3 | 2026-05-01 |
| QTR827 | - | 3 | 2026-06-30 |
| QTR826 | - | 3 | 2026-06-30 |
| QTR73P | - | 3 | 2026-07-14 |
| QTR37Y | - | 3 | 2026-07-17 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | QTR874 | DOH → CAN | Jul 26, 02:30 UTC | Jul 26, 23:00 UTC | 20h 31m |
| 2026-07-25 | QTR27L | BEY → DOH | Jul 25, 10:50 UTC | Jul 25, 13:20 UTC | 2h 30m |
| 2026-07-25 | QTR416 | DOH → BEY | Jul 25, 06:05 UTC | Jul 25, 08:25 UTC | 2h 20m |
| 2026-07-24 | QTR38F | ORD → BRU | Jul 24, 23:25 UTC | Jul 25, 02:00 UTC | 2h 35m |
| 2026-07-24 | QTR2J | DOH → DFW | Jul 24, 18:00 UTC | Jul 24, 18:50 UTC | 50m |
| 2026-07-24 | QTR2J | DOH → DFW | Jul 24, 17:45 UTC | Jul 24, 17:50 UTC | 5m |
| 2026-07-24 | QTR56L | DOH → PRG | Jul 24, 11:05 UTC | Jul 24, 15:10 UTC | 4h 5m |
| 2026-07-24 | QTR36P | DOH → BUD | Jul 24, 04:55 UTC | Jul 24, 08:35 UTC | 3h 40m |
| 2026-07-23 | QTR875 | CAN → DOH | Jul 23, 03:55 UTC | Jul 23, 21:25 UTC | 17h 30m |
| 2026-07-23 | QTR874 | DOH → CAN | Jul 23, 01:50 UTC | Jul 23, 21:25 UTC | 19h 35m |
| 2026-07-22 | QTR74X | - | Jul 22, 14:35 UTC | Jul 22, 21:15 UTC | 6h 40m |
| 2026-07-22 | QTR66Y | - | Jul 22, 10:20 UTC | Jul 22, 12:10 UTC | 1h 50m |
| 2026-07-22 | QTR66Y | - | Jul 22, 05:20 UTC | Jul 22, 05:25 UTC | 5m |
| 2026-07-21 | QTR929 | MNL → DOH | Jul 21, 16:25 UTC | Jul 21, 19:55 UTC | 3h 30m |
| 2026-07-21 | QTR928 | DOH → MNL | Jul 21, 05:15 UTC | Jul 21, 13:55 UTC | 8h 40m |
| 2026-07-20 | QTR875 | CAN → DOH | Jul 20, 07:05 UTC | Jul 21, 01:20 UTC | 18h 15m |
| 2026-07-20 | QTR875 | CAN → DOH | Jul 20, 06:10 UTC | Jul 21, 01:20 UTC | 19h 10m |
| 2026-07-20 | QTR875 | CAN → DOH | Jul 20, 03:05 UTC | Jul 21, 01:20 UTC | 22h 14m |
| 2026-07-20 | QTR874 | DOH → CAN | Jul 20, 02:15 UTC | Jul 21, 01:00 UTC | 22h 44m |
| 2026-07-19 | QTR60F | - | Jul 19, 14:00 UTC | Jul 19, 20:40 UTC | 6h 40m |
| 2026-07-18 | QTR80C | - | Jul 18, 18:05 UTC | Jul 19, 12:00 UTC | 17h 55m |
| 2026-07-17 | QTR401 | - | Jul 17, 17:44 UTC | Jul 17, 18:15 UTC | 30m |
| 2026-07-17 | QTR37Y | - | Jul 17, 13:45 UTC | Jul 17, 14:04 UTC | 20m |
| 2026-07-15 | QTR893 | - | Jul 15, 18:10 UTC | Jul 16, 02:20 UTC | 8h 10m |
| 2026-07-15 | QTR892 | - | Jul 15, 06:00 UTC | Jul 15, 06:15 UTC | 15m |
| 2026-07-14 | QTR892 | - | Jul 14, 23:15 UTC | Jul 15, 00:05 UTC | 50m |
| 2026-07-14 | QTR1C | - | Jul 14, 11:40 UTC | Jul 14, 18:20 UTC | 6h 40m |
| 2026-07-14 | QTR73P | - | Jul 14, 00:00 UTC | Jul 14, 07:00 UTC | 7h 0m |
| 2026-07-13 | QTR1187 | - | Jul 13, 13:25 UTC | Jul 13, 19:40 UTC | 6h 15m |
| 2026-07-12 | QTR38F | - | Jul 12, 18:10 UTC | Jul 13, 02:30 UTC | 8h 20m |
| 2026-07-12 | QTR27L | - | Jul 12, 07:45 UTC | Jul 12, 15:35 UTC | 7h 50m |
| 2026-07-11 | QTR929 | - | Jul 11, 16:30 UTC | Jul 11, 23:00 UTC | 6h 30m |
| 2026-07-11 | QTR928 | - | Jul 11, 05:20 UTC | Jul 11, 14:15 UTC | 8h 55m |
| 2026-07-10 | QTR875 | - | Jul 10, 18:15 UTC | Jul 11, 01:20 UTC | 7h 5m |
| 2026-07-09 | QTR874 | - | Jul 9, 23:40 UTC | Jul 10, 05:20 UTC | 5h 40m |
| 2026-07-09 | QTR56U | - | Jul 9, 17:55 UTC | Jul 9, 20:45 UTC | 2h 50m |
| 2026-07-09 | QTR79Q | - | Jul 9, 14:35 UTC | Jul 9, 15:20 UTC | 45m |
| 2026-07-09 | QTR3R | - | Jul 9, 05:50 UTC | Jul 9, 10:25 UTC | 4h 35m |
| 2026-07-08 | QTR62J | - | Jul 8, 23:10 UTC | Jul 8, 23:55 UTC | 45m |
| 2026-07-08 | QTR1C | LHR → DOH | Jul 8, 11:45 UTC | Jul 8, 18:15 UTC | 6h 30m |
| 2026-07-08 | QTR73P | DOH → KUL | Jul 8, 00:15 UTC | Jul 8, 07:15 UTC | 7h 0m |
| 2026-07-07 | QTR56U | - | Jul 7, 17:25 UTC | Jul 7, 20:45 UTC | 3h 20m |
| 2026-07-07 | QTR79Q | - | Jul 7, 12:30 UTC | Jul 7, 15:05 UTC | 2h 35m |
| 2026-07-07 | QTR831 | - | Jul 7, 02:25 UTC | Jul 7, 08:30 UTC | 6h 5m |
| 2026-07-06 | QTR830 | - | Jul 6, 18:00 UTC | Jul 6, 18:45 UTC | 45m |
| 2026-07-06 | QTR56L | - | Jul 6, 11:35 UTC | Jul 6, 15:05 UTC | 3h 30m |
| 2026-07-05 | QTR22Y | DAC → DOH | Jul 5, 22:55 UTC | Jul 6, 03:30 UTC | 4h 35m |
| 2026-07-05 | QTR55J | - | Jul 5, 15:55 UTC | Jul 5, 20:30 UTC | 4h 35m |
| 2026-07-05 | QTR27L | - | Jul 5, 10:35 UTC | Jul 5, 13:40 UTC | 3h 5m |
| 2026-07-05 | QTR7J | DOH → FRA | Jul 5, 05:55 UTC | Jul 5, 08:30 UTC | 2h 35m |
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-BAS page for operator, model, and routing details .