sensors Mode-S transponder
06A1C6
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-CGA · GULFSTREAM G650
- Hex
- 06A1C6
- Octal
- 01520706
- Decimal
- 434,630
- Country
- QA
- Tail
- A7-CGA
- Type
- GLF6
- Flights observed
- 31
- Distinct callsigns
- 11
- Country
- QA
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 06A1C6 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 11 distinct
Recent flights last 31
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-01 | QQE230 | - | Jun 1, 03:05 UTC | Jun 1, 04:55 UTC | 1h 50m |
| 2026-05-31 | QQE230 | - | May 31, 22:00 UTC | May 31, 23:40 UTC | 1h 40m |
| 2026-05-31 | QQE230 | IAD → YYZ | May 31, 19:20 UTC | May 31, 20:20 UTC | 1h 0m |
| 2026-05-30 | QQE237 | - | May 30, 15:50 UTC | May 30, 22:40 UTC | 6h 50m |
| 2026-05-29 | QQE624 | HKG → LTN | May 29, 09:40 UTC | May 29, 21:05 UTC | 11h 26m |
| 2026-05-28 | QQE624 | - | May 28, 09:45 UTC | May 28, 15:30 UTC | 5h 45m |
| 2026-05-20 | QQE809 | - | May 20, 19:35 UTC | May 21, 01:30 UTC | 5h 55m |
| 2026-05-19 | QQE809 | - | May 19, 16:05 UTC | May 19, 19:40 UTC | 3h 35m |
| 2026-05-17 | QQE940 | - | May 17, 19:50 UTC | May 17, 23:10 UTC | 3h 20m |
| 2026-05-17 | QQE940 | - | May 17, 16:10 UTC | May 17, 16:20 UTC | 10m |
| 2026-05-13 | QQE988 | - | May 13, 17:35 UTC | May 13, 20:00 UTC | 2h 25m |
| 2026-05-11 | QQE988 | - | May 11, 10:15 UTC | May 11, 14:30 UTC | 4h 15m |
| 2026-05-10 | QQE988 | - | May 10, 06:15 UTC | May 10, 06:50 UTC | 35m |
| 2026-05-07 | QQE706 | - | May 7, 08:05 UTC | May 7, 13:15 UTC | 5h 10m |
| 2026-05-06 | QQE706 | HKG → TBS | May 6, 03:45 UTC | May 6, 12:50 UTC | 9h 5m |
| 2026-05-04 | QQE509 | - | May 4, 04:34 UTC | May 4, 09:00 UTC | 4h 25m |
| 2026-05-02 | QQE509 | - | May 2, 23:00 UTC | May 3, 00:40 UTC | 1h 40m |
| 2026-04-18 | QQE546 | - | Apr 18, 10:25 UTC | Apr 18, 10:40 UTC | 15m |
| 2026-04-17 | QQE546 | - | Apr 17, 14:35 UTC | Apr 17, 14:45 UTC | 10m |
| 2026-04-17 | QQE546 | - | Apr 17, 11:35 UTC | Apr 17, 12:10 UTC | 35m |
| 2026-04-17 | QQE546 | - | Apr 17, 10:25 UTC | Apr 17, 10:55 UTC | 30m |
| 2026-04-17 | QQE546 | - | Apr 17, 07:45 UTC | Apr 17, 09:15 UTC | 1h 30m |
| 2026-04-17 | QQE100 | - | Apr 17, 05:20 UTC | Apr 17, 06:20 UTC | 1h 0m |
| 2026-04-17 | QQE100 | - | Apr 17, 04:45 UTC | Apr 17, 05:15 UTC | 30m |
| 2026-04-16 | QQE100 | - | Apr 16, 20:25 UTC | Apr 16, 21:10 UTC | 45m |
| 2026-04-15 | QQE100 | - | Apr 15, 23:35 UTC | Apr 16, 00:30 UTC | 55m |
| 2026-04-15 | QQE100 | - | Apr 15, 17:05 UTC | Apr 15, 17:40 UTC | 35m |
| 2026-04-14 | QQE506 | - | Apr 14, 16:50 UTC | Apr 14, 17:25 UTC | 35m |
| 2026-04-14 | QQE506 | - | Apr 14, 15:40 UTC | Apr 14, 16:45 UTC | 1h 5m |
| 2026-04-13 | QQE506 | - | Apr 13, 12:20 UTC | Apr 13, 14:55 UTC | 2h 35m |
| 2026-04-13 | QQE506 | - | Apr 13, 11:50 UTC | Apr 13, 12:15 UTC | 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-CGA page for operator, model, and routing details .