sensors Mode-S transponder
06A141
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-BFH · BOEING 777-200LR
- Hex
- 06A141
- Octal
- 01520501
- Decimal
- 434,497
- Country
- QA
- Tail
- A7-BFH
- Type
- B77L
- Flights observed
- 139
- Distinct callsigns
- 20
- Country
- QA
- Last broadcast
- 2h ago
Last known position
Country allocation
The ICAO 24-bit address 06A141 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 |
|---|---|---|---|
| QTR8142 | Qatar Airways | 7 | 2026-05-20 |
| QTR8403 | Qatar Airways | 6 | 2026-05-13 |
| QTR8402 | Qatar Airways | 6 | 2026-05-12 |
| QTR8082 | Qatar Airways | 5 | 2026-05-21 |
| QTR8A | Qatar Airways | 4 | 2026-04-17 |
| QTR8175 | Qatar Airways | 4 | 2026-04-21 |
| QTR8152 | Qatar Airways | 4 | 2026-06-01 |
| QTR8099 | Qatar Airways | 4 | 2026-04-30 |
| QTR6C | Qatar Airways | 4 | 2026-04-15 |
| QTR40L | Qatar Airways | 4 | 2026-04-21 |
| QTR38T | - | 4 | 2026-05-14 |
| QTR8464 | Qatar Airways | 3 | 2026-05-23 |
| QTR8244 | - | 3 | 2026-04-17 |
| QTR8083 | Qatar Airways | 3 | 2026-04-17 |
| QTR98J | - | 2 | 2026-04-13 |
| QTR8942 | Qatar Airways | 2 | 2026-05-30 |
| QTR8917 | Qatar Airways | 2 | 2026-04-22 |
| QTR8834 | Qatar Airways | 2 | 2026-05-07 |
| QTR8812 | Qatar Airways | 2 | 2026-05-29 |
| QTR87J | Qatar Airways | 2 | 2026-05-22 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-02 | QTR8440 | DOH → STN | Jun 2, 11:20 UTC | Jun 2, 16:15 UTC | 4h 55m |
| 2026-06-01 | QTR8153 | ORD → LGG | Jun 1, 21:55 UTC | Jun 2, 06:10 UTC | 8h 15m |
| 2026-06-01 | QTR8153 | ORD → LGG | Jun 1, 11:10 UTC | Jun 1, 19:40 UTC | 8h 30m |
| 2026-06-01 | QTR8152 | LGG → DOH | Jun 1, 06:55 UTC | Jun 1, 08:40 UTC | 1h 45m |
| 2026-05-31 | QTR8152 | LGG → DOH | May 31, 18:50 UTC | Jun 1, 03:25 UTC | 8h 35m |
| 2026-05-30 | QTR8152 | LGG → DOH | May 30, 21:00 UTC | May 31, 15:50 UTC | 18h 50m |
| 2026-05-30 | QTR8152 | LGG → DOH | May 30, 14:20 UTC | May 31, 14:15 UTC | 23h 55m |
| 2026-05-30 | QTR8942 | DOH → CAN | May 30, 12:20 UTC | May 31, 12:15 UTC | 23h 55m |
| 2026-05-30 | QTR8942 | DOH → CAN | May 30, 11:45 UTC | May 31, 01:11 UTC | 13h 26m |
| 2026-05-29 | QTR8813 | PTY → LGG | May 29, 18:55 UTC | May 30, 08:20 UTC | 13h 25m |
| 2026-05-29 | QTR8812 | AUS → BOG | May 29, 14:35 UTC | May 29, 16:05 UTC | 1h 30m |
| 2026-05-28 | QTR8812 | AUS → BOG | May 28, 18:25 UTC | May 29, 16:05 UTC | 21h 40m |
| 2026-05-28 | QTR8471 | MEL → BNE | May 28, 12:40 UTC | May 28, 18:25 UTC | 5h 45m |
| 2026-05-28 | QTR8470 | BNE → PER | May 28, 09:50 UTC | May 28, 10:20 UTC | 30m |
| 2026-05-28 | QTR8470 | BNE → PER | May 28, 04:35 UTC | May 28, 07:45 UTC | 3h 10m |
| 2026-05-27 | QTR8256 | - | May 27, 19:00 UTC | May 28, 01:00 UTC | 6h 0m |
| 2026-05-27 | QTR8256 | - | May 27, 15:50 UTC | May 27, 16:25 UTC | 35m |
| 2026-05-26 | QTR38J | - | May 26, 21:25 UTC | May 27, 13:15 UTC | 15h 50m |
| 2026-05-26 | QTR8421 | HKG → DOH | May 26, 19:34 UTC | May 26, 19:45 UTC | 10m |
| 2026-05-26 | QTR8022 | MUC → DOH | May 26, 11:30 UTC | May 26, 17:30 UTC | 6h 0m |
| 2026-05-25 | QTR8242 | DUB → GLA | May 25, 19:50 UTC | May 26, 00:35 UTC | 4h 45m |
| 2026-05-25 | QTR8P | MLE → DOH | May 25, 02:00 UTC | May 25, 17:10 UTC | 15h 10m |
| 2026-05-24 | QTR8435 | GRU → SDU | May 24, 23:45 UTC | May 24, 23:46 UTC | 1m |
| 2026-05-24 | QTR8434 | GRU → REC | May 24, 05:05 UTC | May 24, 20:20 UTC | 15h 15m |
| 2026-05-24 | QTR8465 | HKG → DOH | May 24, 03:00 UTC | May 24, 03:15 UTC | 15m |
| 2026-05-23 | QTR8464 | DOH → SYD | May 23, 23:25 UTC | May 23, 23:50 UTC | 25m |
| 2026-05-23 | QTR44T | ORD → DOH | May 23, 02:20 UTC | May 23, 21:25 UTC | 19h 5m |
| 2026-05-23 | QTR44T | ORD → DOH | May 23, 02:05 UTC | May 23, 21:25 UTC | 19h 20m |
| 2026-05-22 | QTR87J | DOH → BRU | May 22, 14:45 UTC | May 22, 23:05 UTC | 8h 20m |
| 2026-05-22 | QTR87J | DOH → BRU | May 22, 06:20 UTC | May 22, 10:35 UTC | 4h 15m |
| 2026-05-21 | QTR8417 | HKG → DOH | May 21, 06:15 UTC | May 21, 20:45 UTC | 14h 30m |
| 2026-05-21 | QTR8417 | HKG → DOH | May 21, 04:10 UTC | May 21, 04:25 UTC | 15m |
| 2026-05-21 | QTR8082 | MAD → OVD | May 21, 01:05 UTC | May 21, 01:45 UTC | 40m |
| 2026-05-20 | QTR8142 | MST → DOH | May 20, 10:05 UTC | May 20, 22:45 UTC | 12h 40m |
| 2026-05-19 | QTR8142 | MST → DOH | May 19, 23:20 UTC | May 20, 07:40 UTC | 8h 21m |
| 2026-05-19 | QTR8142 | MST → DOH | May 19, 17:25 UTC | May 19, 20:45 UTC | 3h 20m |
| 2026-05-19 | QTR8142 | MST → DOH | May 19, 08:30 UTC | May 19, 14:10 UTC | 5h 40m |
| 2026-05-18 | QTR8141 | ATL → ORD | May 18, 13:15 UTC | May 19, 05:15 UTC | 15h 59m |
| 2026-05-17 | QTR8262 | LGG → CDG | May 17, 22:55 UTC | May 18, 04:30 UTC | 5h 35m |
| 2026-05-17 | QTR6E | - | May 17, 02:55 UTC | May 17, 18:30 UTC | 15h 35m |
| 2026-05-17 | QTR8465 | HKG → DOH | May 17, 00:55 UTC | May 17, 01:10 UTC | 15m |
| 2026-05-16 | QTR8464 | DOH → SYD | May 16, 19:40 UTC | May 16, 20:05 UTC | 25m |
| 2026-05-16 | QTR8464 | DOH → SYD | May 16, 02:40 UTC | May 16, 17:40 UTC | 15h 1m |
| 2026-05-15 | QTR8397 | - | May 15, 06:20 UTC | May 16, 02:45 UTC | 20h 24m |
| 2026-05-15 | QTR8355 | LHR → CPH | May 15, 05:40 UTC | May 16, 02:45 UTC | 21h 4m |
| 2026-05-14 | QTR8355 | LHR → CPH | May 14, 21:55 UTC | May 15, 01:10 UTC | 3h 15m |
| 2026-05-14 | QTR8358 | LHR → MXP | May 14, 13:50 UTC | May 14, 17:55 UTC | 4h 5m |
| 2026-05-14 | QTR38T | - | May 14, 02:30 UTC | May 14, 07:40 UTC | 5h 10m |
| 2026-05-13 | QTR8214 | MAD → MXP | May 13, 22:00 UTC | May 13, 23:40 UTC | 1h 40m |
| 2026-05-13 | QTR7X | DOH → MEL | May 13, 02:10 UTC | May 13, 19:35 UTC | 17h 25m |
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-BFH page for operator, model, and routing details .