sensors Mode-S transponder
06A1E8
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-BFK · BOEING 777-200LR
- Hex
- 06A1E8
- Octal
- 01520750
- Decimal
- 434,664
- Country
- QA
- Tail
- A7-BFK
- Type
- B77L
- Flights observed
- 143
- Distinct callsigns
- 20
- Country
- QA
- Last broadcast
- 4h ago
Current position
Country allocation
The ICAO 24-bit address 06A1E8 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 |
|---|---|---|---|
| QTR8358 | Qatar Airways | 9 | 2026-04-15 |
| QTR8359 | Qatar Airways | 7 | 2026-04-16 |
| QTR8408 | Qatar Airways | 6 | 2026-05-17 |
| QTR8412 | Qatar Airways | 5 | 2026-04-16 |
| QTR43E | - | 5 | 2026-04-18 |
| QTR8960 | Qatar Airways | 4 | 2026-05-28 |
| QTR8471 | Qatar Airways | 4 | 2026-05-14 |
| QTR8439 | Qatar Airways | 4 | 2026-05-20 |
| QTR8409 | Qatar Airways | 4 | 2026-05-21 |
| QTR8356 | Qatar Airways | 4 | 2026-05-11 |
| QTR8413 | Qatar Airways | 3 | 2026-04-17 |
| QTR8357 | Qatar Airways | 3 | 2026-05-11 |
| QTR8286 | Qatar Airways | 3 | 2026-05-24 |
| QTR8270 | Qatar Airways | 3 | 2026-04-18 |
| QTR8980 | Qatar Airways | 2 | 2026-05-08 |
| QTR8962 | Qatar Airways | 2 | 2026-05-29 |
| QTR8838 | Qatar Airways | 2 | 2026-05-16 |
| QTR87J | Qatar Airways | 2 | 2026-04-24 |
| QTR8474 | Qatar Airways | 2 | 2026-05-01 |
| QTR8470 | Qatar Airways | 2 | 2026-05-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | QTR59K | DOH → BER | May 30, 09:45 UTC | May 30, 15:55 UTC | 6h 10m |
| 2026-05-29 | QTR8962 | DOH → PVG | May 29, 10:55 UTC | May 30, 03:10 UTC | 16h 15m |
| 2026-05-28 | QTR8962 | DOH → PVG | May 28, 22:40 UTC | May 29, 14:20 UTC | 15h 40m |
| 2026-05-28 | QTR8961 | PVG → DOH | May 28, 12:05 UTC | May 29, 11:50 UTC | 23h 45m |
| 2026-05-28 | QTR8960 | DOH → PVG | May 28, 09:50 UTC | May 29, 01:55 UTC | 16h 5m |
| 2026-05-28 | QTR8960 | DOH → PVG | May 28, 02:05 UTC | May 29, 01:55 UTC | 23h 50m |
| 2026-05-28 | QTR8960 | DOH → PVG | May 28, 01:10 UTC | May 28, 23:55 UTC | 22h 45m |
| 2026-05-27 | QTR8960 | DOH → PVG | May 27, 21:05 UTC | May 28, 13:10 UTC | 16h 5m |
| 2026-05-27 | QTR8939 | CAN → DOH | May 27, 04:55 UTC | May 28, 02:05 UTC | 21h 10m |
| 2026-05-26 | QTR89C | - | May 26, 13:00 UTC | May 26, 15:35 UTC | 2h 35m |
| 2026-05-26 | QTR8234 | ORK → LHR | May 26, 09:25 UTC | May 26, 10:54 UTC | 1h 30m |
| 2026-05-25 | QTR50Q | FCO → DOH | May 25, 13:40 UTC | May 26, 06:44 UTC | 17h 4m |
| 2026-05-25 | QTR8401 | HKG → DOH | May 25, 11:40 UTC | May 25, 11:55 UTC | 15m |
| 2026-05-25 | QTR8400 | IKA → HKG | May 25, 08:15 UTC | May 25, 09:00 UTC | 45m |
| 2026-05-25 | QTR8400 | IKA → HKG | May 25, 02:55 UTC | May 25, 05:40 UTC | 2h 45m |
| 2026-05-24 | QTR8286 | STN → CDG | May 24, 20:45 UTC | May 24, 21:15 UTC | 30m |
| 2026-05-24 | QTR8286 | STN → CDG | May 24, 14:55 UTC | May 24, 19:00 UTC | 4h 5m |
| 2026-05-23 | QTR72B | - | May 23, 21:30 UTC | May 24, 12:40 UTC | 15h 10m |
| 2026-05-23 | QTR8407 | HKG → DOH | May 23, 19:30 UTC | May 23, 19:45 UTC | 15m |
| 2026-05-23 | QTR8406 | SIN → HKG | May 23, 04:25 UTC | May 23, 17:05 UTC | 12h 40m |
| 2026-05-22 | QTR32E | - | May 22, 22:00 UTC | May 22, 22:45 UTC | 45m |
| 2026-05-22 | QTR8278 | EDI → DUB | May 22, 18:30 UTC | May 22, 19:05 UTC | 35m |
| 2026-05-22 | QTR8278 | EDI → DUB | May 22, 13:55 UTC | May 22, 16:40 UTC | 2h 45m |
| 2026-05-22 | QTR8277 | DOH → MAD | May 22, 05:25 UTC | May 22, 05:55 UTC | 30m |
| 2026-05-21 | QTR8409 | HKG → DOH | May 21, 19:20 UTC | May 21, 19:35 UTC | 15m |
| 2026-05-21 | QTR8409 | HKG → DOH | May 21, 17:30 UTC | May 21, 17:40 UTC | 10m |
| 2026-05-21 | QTR8840 | - | May 21, 14:30 UTC | May 21, 15:00 UTC | 30m |
| 2026-05-20 | QTR93M | DOH → LGW | May 20, 20:25 UTC | May 21, 12:15 UTC | 15h 50m |
| 2026-05-20 | QTR8439 | THE → GRU | May 20, 03:10 UTC | May 20, 17:35 UTC | 14h 26m |
| 2026-05-20 | QTR8439 | THE → GRU | May 20, 00:15 UTC | May 20, 00:25 UTC | 10m |
| 2026-05-19 | QTR8500 | - | May 19, 02:05 UTC | May 19, 21:00 UTC | 18h 55m |
| 2026-05-18 | QTR8409 | HKG → DOH | May 18, 04:20 UTC | May 18, 15:15 UTC | 10h 55m |
| 2026-05-18 | QTR8409 | HKG → DOH | May 18, 02:15 UTC | May 18, 02:30 UTC | 15m |
| 2026-05-17 | QTR8408 | SIN → HKG | May 17, 23:20 UTC | May 17, 23:40 UTC | 20m |
| 2026-05-17 | QTR8408 | SIN → HKG | May 17, 20:05 UTC | May 17, 20:30 UTC | 25m |
| 2026-05-17 | QTR8408 | SIN → HKG | May 17, 12:05 UTC | May 17, 17:01 UTC | 4h 55m |
| 2026-05-16 | QTR86U | KRT → DOH | May 16, 13:41 UTC | May 17, 03:25 UTC | 13h 45m |
| 2026-05-16 | QTR8838 | LUX → DOH | May 16, 07:51 UTC | May 16, 09:51 UTC | 2h 0m |
| 2026-05-15 | QTR8838 | LUX → DOH | May 15, 15:55 UTC | May 16, 05:56 UTC | 14h 1m |
| 2026-05-14 | QTR8471 | MEL → BNE | May 14, 18:05 UTC | May 15, 13:10 UTC | 19h 5m |
| 2026-05-14 | QTR8471 | MEL → BNE | May 14, 16:05 UTC | May 15, 13:10 UTC | 21h 5m |
| 2026-05-14 | QTR8471 | MEL → BNE | May 14, 14:35 UTC | May 15, 13:10 UTC | 22h 35m |
| 2026-05-14 | QTR8471 | MEL → BNE | May 14, 12:30 UTC | May 14, 12:40 UTC | 10m |
| 2026-05-14 | QTR8470 | BNE → PER | May 14, 09:10 UTC | May 14, 09:40 UTC | 30m |
| 2026-05-14 | QTR8470 | BNE → PER | May 14, 04:10 UTC | May 14, 07:15 UTC | 3h 5m |
| 2026-05-13 | QTR8661 | DEL → DOH | May 13, 05:00 UTC | May 13, 05:35 UTC | 35m |
| 2026-05-13 | QTR8660 | DFW → XNA | May 13, 00:55 UTC | May 13, 01:25 UTC | 30m |
| 2026-05-11 | QTR8357 | KUL → DOH | May 11, 22:35 UTC | May 12, 14:50 UTC | 16h 16m |
| 2026-05-11 | QTR8357 | KUL → DOH | May 11, 16:05 UTC | May 12, 14:50 UTC | 22h 46m |
| 2026-05-11 | QTR8357 | KUL → DOH | May 11, 15:45 UTC | May 12, 12:30 UTC | 20h 46m |
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-BFK page for operator, model, and routing details .