sensors Mode-S transponder
06A19F
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-BED · BOEING 777-300ER
- Hex
- 06A19F
- Octal
- 01520637
- Decimal
- 434,591
- Country
- QA
- Tail
- A7-BED
- Type
- B77W
- Flights observed
- 166
- Distinct callsigns
- 20
- Country
- QA
- Last broadcast
- Jul 26, 13:30 UTC
Current position
Country allocation
The ICAO 24-bit address 06A19F 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 |
|---|---|---|---|
| QTR1F | - | 6 | 2026-06-16 |
| QTR18F | Qatar Airways | 6 | 2026-07-25 |
| QTR21X | Qatar Airways | 5 | 2026-07-22 |
| QTR871 | Qatar Airways | 4 | 2026-06-20 |
| QTR838 | - | 4 | 2026-07-01 |
| QTR67H | Qatar Airways | 4 | 2026-06-16 |
| QTR65H | Qatar Airways | 4 | 2026-06-14 |
| QTR64V | - | 4 | 2026-07-16 |
| QTR1V | Qatar Airways | 4 | 2026-05-03 |
| QTR9W | - | 3 | 2026-07-16 |
| QTR93X | Qatar Airways | 3 | 2026-05-08 |
| QTR817 | Qatar Airways | 3 | 2026-05-23 |
| QTR814 | Qatar Airways | 3 | 2026-05-22 |
| QTR72P | Qatar Airways | 3 | 2026-06-24 |
| QTR65R | Qatar Airways | 3 | 2026-07-26 |
| QTR62J | Qatar Airways | 3 | 2026-04-17 |
| QTR33C | Qatar Airways | 3 | 2026-05-08 |
| QTR24T | Qatar Airways | 3 | 2026-04-18 |
| QTR1J | Qatar Airways | 3 | 2026-05-03 |
| QTR915 | - | 2 | 2026-07-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | QTR65R | SEA → DOH | Jul 26, 01:00 UTC | Jul 26, 13:30 UTC | 12h 31m |
| 2026-07-25 | QTR18F | BUD → DOH | Jul 25, 06:30 UTC | Jul 25, 07:00 UTC | 30m |
| 2026-07-24 | QTR32N | DOH → SJJ | Jul 24, 22:40 UTC | Jul 25, 02:25 UTC | 3h 45m |
| 2026-07-24 | QTR572 | DOH → BLR | Jul 24, 17:10 UTC | Jul 24, 20:50 UTC | 3h 40m |
| 2026-07-23 | QTR68T | SEA → DOH | Jul 23, 23:55 UTC | Jul 24, 14:15 UTC | 14h 20m |
| 2026-07-22 | QTR21X | DOH → SEA | Jul 22, 23:50 UTC | Jul 23, 20:50 UTC | 21h 0m |
| 2026-07-22 | QTR21X | DOH → SEA | Jul 22, 22:45 UTC | Jul 23, 20:50 UTC | 22h 5m |
| 2026-07-22 | QTR21X | DOH → SEA | Jul 22, 19:50 UTC | Jul 23, 19:45 UTC | 23h 55m |
| 2026-07-22 | QTR21X | DOH → SEA | Jul 22, 19:20 UTC | Jul 23, 16:35 UTC | 21h 15m |
| 2026-07-22 | QTR21X | DOH → SEA | Jul 22, 12:25 UTC | Jul 23, 11:45 UTC | 23h 20m |
| 2026-07-21 | QTR898 | DOH → PEK | Jul 21, 21:05 UTC | Jul 21, 21:45 UTC | 40m |
| 2026-07-21 | QTR6W | ORD → DOH | Jul 21, 01:20 UTC | Jul 21, 14:15 UTC | 12h 55m |
| 2026-07-20 | QTR18F | BUD → DOH | Jul 20, 06:30 UTC | Jul 20, 20:05 UTC | 13h 35m |
| 2026-07-19 | QTR3X | - | Jul 19, 12:30 UTC | Jul 19, 22:30 UTC | 10h 0m |
| 2026-07-19 | QTR915 | - | Jul 19, 05:35 UTC | Jul 19, 09:55 UTC | 4h 20m |
| 2026-07-18 | QTR914 | - | Jul 18, 07:20 UTC | Jul 18, 11:15 UTC | 3h 55m |
| 2026-07-17 | QTR55Y | - | Jul 17, 16:55 UTC | Jul 18, 05:15 UTC | 12h 21m |
| 2026-07-16 | QTR9W | PER → DOH | Jul 16, 14:50 UTC | Jul 17, 01:45 UTC | 10h 55m |
| 2026-07-16 | QTR64V | - | Jul 16, 02:10 UTC | Jul 16, 10:35 UTC | 8h 25m |
| 2026-07-15 | QTR64V | - | Jul 15, 23:55 UTC | Jul 16, 00:45 UTC | 50m |
| 2026-07-15 | QTR38A | - | Jul 15, 05:10 UTC | Jul 15, 05:45 UTC | 35m |
| 2026-07-14 | QTR15K | - | Jul 14, 18:15 UTC | Jul 15, 00:20 UTC | 6h 4m |
| 2026-07-13 | QTR74G | - | Jul 13, 22:40 UTC | Jul 14, 05:30 UTC | 6h 50m |
| 2026-07-13 | QTR809 | - | Jul 13, 09:15 UTC | Jul 13, 19:25 UTC | 10h 10m |
| 2026-07-12 | QTR808 | - | Jul 12, 18:01 UTC | Jul 13, 03:50 UTC | 9h 50m |
| 2026-07-12 | QTR6W | - | Jul 12, 02:25 UTC | Jul 12, 15:25 UTC | 13h 0m |
| 2026-07-11 | QTR18F | - | Jul 11, 06:10 UTC | Jul 11, 19:30 UTC | 13h 20m |
| 2026-07-10 | QTR9W | - | Jul 10, 14:45 UTC | Jul 11, 01:30 UTC | 10h 45m |
| 2026-07-10 | QTR64V | - | Jul 10, 00:20 UTC | Jul 10, 10:40 UTC | 10h 20m |
| 2026-07-09 | QTR5B | - | Jul 9, 15:30 UTC | Jul 9, 19:20 UTC | 3h 50m |
| 2026-07-09 | QTR77T | - | Jul 9, 06:50 UTC | Jul 9, 10:55 UTC | 4h 5m |
| 2026-07-07 | QTR8M | - | Jul 7, 13:05 UTC | Jul 8, 02:30 UTC | 13h 25m |
| 2026-07-06 | QTR5M | - | Jul 6, 17:55 UTC | Jul 7, 07:00 UTC | 13h 5m |
| 2026-07-06 | QTR65R | IAD → DOH | Jul 6, 01:20 UTC | Jul 6, 13:40 UTC | 12h 20m |
| 2026-07-05 | QTR18F | - | Jul 5, 08:15 UTC | Jul 5, 19:55 UTC | 11h 40m |
| 2026-07-05 | QTR18F | - | Jul 5, 06:05 UTC | Jul 5, 06:35 UTC | 30m |
| 2026-07-04 | QTR3X | - | Jul 4, 12:15 UTC | Jul 5, 01:05 UTC | 12h 50m |
| 2026-07-04 | QTR915 | - | Jul 4, 05:30 UTC | Jul 4, 09:50 UTC | 4h 20m |
| 2026-07-03 | QTR914 | - | Jul 3, 07:35 UTC | Jul 3, 11:10 UTC | 3h 35m |
| 2026-07-02 | QTR55Y | - | Jul 2, 17:20 UTC | Jul 3, 05:45 UTC | 12h 25m |
| 2026-07-02 | QTR839 | BKK → DOH | Jul 2, 03:20 UTC | Jul 2, 09:20 UTC | 6h 0m |
| 2026-07-01 | QTR838 | - | Jul 1, 17:40 UTC | Jul 1, 22:40 UTC | 5h 0m |
| 2026-07-01 | QTR838 | - | Jul 1, 17:00 UTC | Jul 1, 17:35 UTC | 35m |
| 2026-07-01 | QTR65R | - | Jul 1, 00:50 UTC | Jul 1, 13:20 UTC | 12h 30m |
| 2026-06-30 | QTR18F | DOH → IAD | Jun 30, 05:45 UTC | Jun 30, 19:10 UTC | 13h 25m |
| 2026-06-29 | QTR893 | - | Jun 29, 18:49 UTC | Jun 30, 02:45 UTC | 7h 56m |
| 2026-06-29 | QTR892 | - | Jun 29, 05:59 UTC | Jun 29, 06:09 UTC | 10m |
| 2026-06-28 | QTR892 | - | Jun 28, 22:55 UTC | Jun 28, 23:44 UTC | 50m |
| 2026-06-28 | QTR1186 | DOH → JED | Jun 28, 13:04 UTC | Jun 28, 19:04 UTC | 6h 0m |
| 2026-06-27 | QTR9W | - | Jun 27, 14:49 UTC | Jun 28, 01:29 UTC | 10h 40m |
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-BED page for operator, model, and routing details .