sensors Mode-S transponder
06A1C9
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-CGD · GULFSTREAM G650
- Hex
- 06A1C9
- Octal
- 01520711
- Decimal
- 434,633
- Country
- QA
- Tail
- A7-CGD
- Type
- GLF6
- Flights observed
- 70
- Distinct callsigns
- 20
- Country
- QA
- Last broadcast
- 15d ago
Last known position
Country allocation
The ICAO 24-bit address 06A1C9 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 |
|---|---|---|---|
| QQE914 | - | 6 | 2026-04-15 |
| QQE983 | - | 5 | 2026-04-28 |
| QQE252 | - | 5 | 2026-05-15 |
| QQE506 | - | 4 | 2026-07-02 |
| QQE291 | - | 4 | 2026-05-25 |
| QQE917 | - | 3 | 2026-04-16 |
| QQE773 | - | 3 | 2026-06-22 |
| QQE548 | - | 3 | 2026-05-10 |
| QQE541 | - | 3 | 2026-06-03 |
| QQE273 | - | 3 | 2026-05-02 |
| QQE245 | - | 3 | 2026-06-01 |
| QQE982 | - | 2 | 2026-04-29 |
| QQE932 | - | 2 | 2026-04-22 |
| QQE769 | - | 2 | 2026-06-03 |
| QQE751 | - | 2 | 2026-05-27 |
| QQE726 | - | 2 | 2026-06-11 |
| QQE719 | - | 2 | 2026-06-08 |
| QQE705 | - | 2 | 2026-05-05 |
| QQE517 | - | 2 | 2026-05-17 |
| QQE306 | - | 2 | 2026-06-16 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-02 | QQE506 | - | Jul 2, 23:45 UTC | Jul 3, 02:00 UTC | 2h 15m |
| 2026-06-30 | QQE506 | - | Jun 30, 04:55 UTC | Jun 30, 11:30 UTC | 6h 35m |
| 2026-06-29 | QQE506 | - | Jun 29, 21:44 UTC | Jun 30, 03:55 UTC | 6h 11m |
| 2026-06-28 | QQE506 | - | Jun 28, 16:39 UTC | Jun 28, 18:40 UTC | 2h 0m |
| 2026-06-26 | QQE247 | - | Jun 26, 16:49 UTC | Jun 27, 00:20 UTC | 7h 30m |
| 2026-06-26 | QQE247 | - | Jun 26, 13:55 UTC | Jun 26, 14:44 UTC | 50m |
| 2026-06-22 | QQE773 | - | Jun 22, 19:19 UTC | Jun 22, 21:59 UTC | 2h 40m |
| 2026-06-22 | QQE773 | - | Jun 22, 15:05 UTC | Jun 22, 17:55 UTC | 2h 50m |
| 2026-06-22 | QQE773 | - | Jun 22, 10:49 UTC | Jun 22, 12:59 UTC | 2h 10m |
| 2026-06-21 | QQE714 | - | Jun 21, 11:49 UTC | Jun 21, 19:05 UTC | 7h 15m |
| 2026-06-20 | QQE279 | GOA → TEB | Jun 20, 06:24 UTC | Jun 20, 14:19 UTC | 7h 55m |
| 2026-06-19 | QQE279 | - | Jun 19, 07:54 UTC | Jun 19, 09:04 UTC | 1h 10m |
| 2026-06-17 | QQE740 | - | Jun 17, 19:35 UTC | Jun 18, 07:50 UTC | 12h 15m |
| 2026-06-16 | QQE306 | - | Jun 16, 15:35 UTC | Jun 16, 22:50 UTC | 7h 16m |
| 2026-06-15 | QQE306 | IBZ → MAD | Jun 15, 10:00 UTC | Jun 15, 10:45 UTC | 45m |
| 2026-06-15 | QQE755 | - | Jun 15, 02:35 UTC | Jun 15, 09:15 UTC | 6h 40m |
| 2026-06-12 | QQE220 | - | Jun 12, 17:40 UTC | Jun 13, 00:40 UTC | 7h 0m |
| 2026-06-11 | QQE726 | - | Jun 11, 03:20 UTC | Jun 11, 13:35 UTC | 10h 15m |
| 2026-06-09 | QQE726 | - | Jun 9, 15:00 UTC | Jun 9, 15:50 UTC | 50m |
| 2026-06-08 | QQE719 | - | Jun 8, 07:20 UTC | Jun 8, 17:20 UTC | 10h 0m |
| 2026-06-07 | QQE719 | - | Jun 7, 10:15 UTC | Jun 7, 12:30 UTC | 2h 15m |
| 2026-06-03 | QQE769 | VNY → FAB | Jun 3, 22:40 UTC | Jun 4, 08:10 UTC | 9h 30m |
| 2026-06-03 | QQE769 | SJC → VNY | Jun 3, 19:55 UTC | Jun 3, 20:40 UTC | 45m |
| 2026-06-03 | QQE541 | HKG → SJC | Jun 3, 03:15 UTC | Jun 3, 18:50 UTC | 15h 35m |
| 2026-06-02 | QQE541 | - | Jun 2, 17:30 UTC | Jun 2, 18:00 UTC | 30m |
| 2026-06-02 | QQE541 | - | Jun 2, 07:15 UTC | Jun 2, 11:00 UTC | 3h 45m |
| 2026-06-01 | QQE245 | - | Jun 1, 03:40 UTC | Jun 1, 11:20 UTC | 7h 40m |
| 2026-05-31 | QQE245 | - | May 31, 13:50 UTC | May 31, 14:20 UTC | 30m |
| 2026-05-30 | QQE245 | - | May 30, 21:10 UTC | May 31, 12:10 UTC | 15h 0m |
| 2026-05-29 | QQE915 | - | May 29, 07:25 UTC | May 29, 14:30 UTC | 7h 5m |
| 2026-05-27 | QQE751 | - | May 27, 23:15 UTC | May 28, 11:15 UTC | 12h 0m |
| 2026-05-26 | QQE751 | - | May 26, 09:09 UTC | May 26, 19:25 UTC | 10h 15m |
| 2026-05-25 | QQE291 | - | May 25, 04:15 UTC | May 25, 05:40 UTC | 1h 25m |
| 2026-05-24 | QQE291 | - | May 24, 15:10 UTC | May 24, 15:40 UTC | 30m |
| 2026-05-24 | QQE291 | TEB → YOW | May 24, 11:40 UTC | May 24, 12:40 UTC | 1h 0m |
| 2026-05-22 | QQE291 | HND → TEB | May 22, 05:15 UTC | May 22, 16:50 UTC | 11h 35m |
| 2026-05-17 | QQE517 | LAS → HND | May 17, 19:25 UTC | May 18, 06:35 UTC | 11h 10m |
| 2026-05-16 | QQE517 | - | May 16, 20:05 UTC | May 17, 00:45 UTC | 4h 39m |
| 2026-05-15 | QQE252 | - | May 15, 20:50 UTC | May 15, 22:15 UTC | 1h 25m |
| 2026-05-15 | QQE252 | TEB → FTY | May 15, 15:10 UTC | May 15, 16:50 UTC | 1h 40m |
| 2026-05-14 | QQE252 | - | May 14, 15:01 UTC | May 14, 17:20 UTC | 2h 20m |
| 2026-05-12 | QQE252 | - | May 12, 12:45 UTC | May 12, 22:05 UTC | 9h 20m |
| 2026-05-12 | QQE252 | - | May 12, 05:55 UTC | May 12, 11:05 UTC | 5h 10m |
| 2026-05-10 | QQE548 | - | May 10, 08:50 UTC | May 10, 09:05 UTC | 15m |
| 2026-05-06 | QQE548 | - | May 6, 12:01 UTC | May 6, 12:15 UTC | 15m |
| 2026-05-06 | QQE548 | - | May 6, 10:45 UTC | May 6, 11:05 UTC | 20m |
| 2026-05-05 | QQE705 | - | May 5, 07:05 UTC | May 5, 11:00 UTC | 3h 55m |
| 2026-05-04 | QQE705 | MAN → GVA | May 4, 10:55 UTC | May 4, 12:20 UTC | 1h 25m |
| 2026-05-03 | QQE710 | - | May 3, 12:40 UTC | May 3, 20:05 UTC | 7h 25m |
| 2026-05-02 | QQE273 | - | May 2, 20:25 UTC | May 2, 21:00 UTC | 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-CGD page for operator, model, and routing details .