sensors Mode-S transponder
06A3B6
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-BTC · BOEING 777-200LR
- Hex
- 06A3B6
- Octal
- 01521666
- Decimal
- 435,126
- Country
- QA
- Tail
- A7-BTC
- Type
- B77L
- Flights observed
- 143
- Distinct callsigns
- 20
- Country
- QA
- Last broadcast
- 6h ago
Last known position
Country allocation
The ICAO 24-bit address 06A3B6 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 |
|---|---|---|---|
| QTR8242 | Qatar Airways | 8 | 2026-05-13 |
| QTR8411 | Qatar Airways | 7 | 2026-05-12 |
| QTR8175 | - | 6 | 2026-04-13 |
| QTR8410 | Qatar Airways | 5 | 2026-05-11 |
| QTR8408 | Qatar Airways | 5 | 2026-04-16 |
| QTR8P | Qatar Airways | 4 | 2026-05-13 |
| QTR8942 | Qatar Airways | 4 | 2026-05-20 |
| QTR8428 | Qatar Airways | 4 | 2026-05-22 |
| QTR8278 | Qatar Airways | 4 | 2026-04-18 |
| QTR8943 | Qatar Airways | 3 | 2026-04-30 |
| QTR8409 | Qatar Airways | 3 | 2026-04-17 |
| QTR8403 | Qatar Airways | 3 | 2026-05-06 |
| QTR8402 | Qatar Airways | 3 | 2026-05-05 |
| QTR8277 | Qatar Airways | 3 | 2026-04-17 |
| QTR8253 | Qatar Airways | 3 | 2026-04-18 |
| QTR8160 | Qatar Airways | 3 | 2026-05-03 |
| QTR75J | Qatar Airways | 3 | 2026-05-17 |
| QTR38T | - | 3 | 2026-05-07 |
| QTR91Y | Qatar Airways | 2 | 2026-05-26 |
| QTR8919 | Qatar Airways | 2 | 2026-05-19 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | QTR8218 | DFW → FLL | May 29, 16:30 UTC | May 29, 22:10 UTC | 5h 40m |
| 2026-05-28 | QTR8217 | DFW → JAX | May 28, 18:05 UTC | May 29, 13:15 UTC | 19h 10m |
| 2026-05-28 | QTR8217 | DFW → JAX | May 28, 16:15 UTC | May 29, 13:15 UTC | 21h 0m |
| 2026-05-28 | QTR8412 | GRU → SJP | May 28, 05:05 UTC | May 28, 12:45 UTC | 7h 40m |
| 2026-05-27 | QTR93M | DOH → LGW | May 27, 20:45 UTC | May 28, 01:25 UTC | 4h 40m |
| 2026-05-27 | QTR8439 | THE → GRU | May 27, 02:54 UTC | May 27, 06:44 UTC | 3h 50m |
| 2026-05-27 | QTR8439 | THE → GRU | May 27, 00:55 UTC | May 27, 01:09 UTC | 15m |
| 2026-05-26 | QTR8500 | - | May 26, 22:29 UTC | May 26, 23:05 UTC | 35m |
| 2026-05-26 | QTR8500 | - | May 26, 17:04 UTC | May 26, 20:29 UTC | 3h 25m |
| 2026-05-26 | QTR91Y | DOH → FCO | May 26, 07:15 UTC | May 26, 13:15 UTC | 6h 0m |
| 2026-05-25 | QTR91Y | DOH → FCO | May 25, 20:15 UTC | May 26, 04:04 UTC | 7h 50m |
| 2026-05-25 | QTR61C | LGG → ORD | May 25, 09:20 UTC | May 25, 17:55 UTC | 8h 35m |
| 2026-05-25 | QTR61C | LGG → ORD | May 25, 04:55 UTC | May 25, 07:30 UTC | 2h 35m |
| 2026-05-24 | QTR8151 | PTY → LGG | May 24, 15:45 UTC | May 24, 21:45 UTC | 6h 0m |
| 2026-05-24 | QTR8151 | PTY → LGG | May 24, 05:05 UTC | May 24, 12:30 UTC | 7h 25m |
| 2026-05-23 | QTR8150 | PTY → LGG | May 23, 17:45 UTC | May 24, 02:05 UTC | 8h 21m |
| 2026-05-23 | QTR24A | DOH → AMS | May 23, 11:45 UTC | May 23, 14:30 UTC | 2h 45m |
| 2026-05-22 | QTR8429 | GRU → POA | May 22, 23:55 UTC | May 23, 00:05 UTC | 10m |
| 2026-05-22 | QTR8429 | GRU → POA | May 22, 18:15 UTC | May 22, 22:05 UTC | 3h 50m |
| 2026-05-22 | QTR8428 | GRU → MGF | May 22, 13:35 UTC | May 22, 14:10 UTC | 35m |
| 2026-05-21 | QTR8428 | GRU → MGF | May 21, 22:25 UTC | May 22, 11:15 UTC | 12h 50m |
| 2026-05-21 | QTR8428 | GRU → MGF | May 21, 14:20 UTC | May 22, 11:15 UTC | 20h 55m |
| 2026-05-21 | QTR8428 | GRU → MGF | May 21, 12:10 UTC | May 22, 11:15 UTC | 23h 5m |
| 2026-05-20 | QTR8942 | DOH → CAN | May 20, 20:15 UTC | May 21, 15:00 UTC | 18h 45m |
| 2026-05-20 | QTR8917 | LGG → DOH | May 20, 16:20 UTC | May 20, 17:45 UTC | 1h 25m |
| 2026-05-20 | QTR8916 | NGO → MEX | May 20, 00:30 UTC | May 20, 10:45 UTC | 10h 16m |
| 2026-05-19 | QTR8919 | CRK → AKL | May 19, 13:20 UTC | May 19, 22:05 UTC | 8h 45m |
| 2026-05-19 | QTR8919 | CRK → AKL | May 19, 09:30 UTC | May 19, 11:15 UTC | 1h 45m |
| 2026-05-19 | QTR8918 | BNE → SYD | May 19, 06:10 UTC | May 19, 06:20 UTC | 10m |
| 2026-05-19 | QTR8918 | BNE → SYD | May 19, 00:45 UTC | May 19, 03:40 UTC | 2h 55m |
| 2026-05-18 | QTR57R | - | May 18, 15:00 UTC | May 18, 20:15 UTC | 5h 14m |
| 2026-05-17 | QTR75J | DOH → BLR | May 17, 17:50 UTC | May 18, 12:10 UTC | 18h 20m |
| 2026-05-17 | QTR75J | DOH → BLR | May 17, 15:35 UTC | May 18, 12:10 UTC | 20h 35m |
| 2026-05-17 | QTR75J | DOH → BLR | May 17, 14:40 UTC | May 18, 12:10 UTC | 21h 30m |
| 2026-05-17 | QTR8953 | HAN → DOH | May 17, 08:40 UTC | May 17, 18:35 UTC | 9h 55m |
| 2026-05-16 | QTR8833 | ACC → DOH | May 16, 06:41 UTC | May 16, 22:25 UTC | 15h 44m |
| 2026-05-16 | QTR8832 | MIA → AMS | May 16, 01:20 UTC | May 16, 02:55 UTC | 1h 35m |
| 2026-05-14 | QTR8561 | DFW → JAX | May 14, 07:00 UTC | May 14, 14:20 UTC | 7h 20m |
| 2026-05-13 | QTR8242 | DUB → GLA | May 13, 20:35 UTC | May 14, 02:25 UTC | 5h 50m |
| 2026-05-13 | QTR8242 | DUB → GLA | May 13, 15:10 UTC | May 13, 17:00 UTC | 1h 50m |
| 2026-05-13 | QTR8P | MLE → DOH | May 13, 12:35 UTC | May 13, 12:40 UTC | 5m |
| 2026-05-12 | QTR8411 | GRU → NVT | May 12, 21:35 UTC | May 13, 01:45 UTC | 4h 10m |
| 2026-05-12 | QTR8411 | GRU → NVT | May 12, 19:35 UTC | May 12, 19:45 UTC | 10m |
| 2026-05-11 | QTR8410 | GRU → BEL | May 11, 21:35 UTC | May 12, 15:35 UTC | 18h 0m |
| 2026-05-11 | QTR8410 | GRU → BEL | May 11, 20:35 UTC | May 12, 15:35 UTC | 19h 0m |
| 2026-05-11 | QTR8045 | MAD → MLN | May 11, 03:40 UTC | May 11, 17:40 UTC | 14h 1m |
| 2026-05-11 | QTR8045 | MAD → MLN | May 11, 01:30 UTC | May 11, 02:05 UTC | 35m |
| 2026-05-10 | QTR8912 | DOH → MFM | May 10, 12:49 UTC | May 10, 16:00 UTC | 3h 10m |
| 2026-05-08 | QTR23W | - | May 8, 16:00 UTC | May 8, 21:30 UTC | 5h 30m |
| 2026-05-07 | QTR79A | MXP → ORD | May 7, 22:00 UTC | May 8, 13:20 UTC | 15h 20m |
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-BTC page for operator, model, and routing details .