sensors Mode-S transponder
06A1DC
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-CHC · GULFSTREAM G700
- Hex
- 06A1DC
- Octal
- 01520734
- Decimal
- 434,652
- Country
- QA
- Tail
- A7-CHC
- Type
- GA7C
- Flights observed
- 32
- Distinct callsigns
- 13
- Country
- QA
- Last broadcast
- 23h ago
Last known position
Country allocation
The ICAO 24-bit address 06A1DC 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 13 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| QQE202 | - | 5 | 2026-04-23 |
| QQE268 | - | 4 | 2026-05-19 |
| QQE508 | - | 3 | 2026-05-23 |
| QQE211 | - | 3 | 2026-05-15 |
| QQE951 | - | 2 | 2026-04-29 |
| QQE945 | - | 2 | 2026-06-06 |
| QQE750 | - | 2 | 2026-04-25 |
| QQE711 | - | 2 | 2026-06-04 |
| QQE529 | - | 2 | 2026-05-05 |
| QQE528 | - | 2 | 2026-04-30 |
| QQE526 | - | 2 | 2026-05-09 |
| QQE507 | - | 2 | 2026-05-07 |
| QQE580 | - | 1 | 2026-05-29 |
Recent flights last 32
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-06 | QQE945 | - | Jun 6, 10:14 UTC | Jun 6, 13:00 UTC | 2h 45m |
| 2026-06-04 | QQE945 | - | Jun 4, 17:45 UTC | Jun 4, 18:55 UTC | 1h 10m |
| 2026-06-04 | QQE711 | HND → NCE | Jun 4, 02:40 UTC | Jun 4, 14:40 UTC | 12h 0m |
| 2026-06-03 | QQE711 | - | Jun 3, 17:35 UTC | Jun 4, 00:25 UTC | 6h 50m |
| 2026-05-29 | QQE580 | - | May 29, 11:25 UTC | May 29, 19:55 UTC | 8h 30m |
| 2026-05-23 | QQE508 | - | May 23, 12:50 UTC | May 23, 13:25 UTC | 35m |
| 2026-05-22 | QQE508 | ZRH → DEL | May 22, 10:00 UTC | May 22, 17:05 UTC | 7h 5m |
| 2026-05-22 | QQE508 | BCN → ZRH | May 22, 06:25 UTC | May 22, 07:50 UTC | 1h 25m |
| 2026-05-19 | QQE268 | TEB → BCN | May 19, 00:10 UTC | May 19, 07:10 UTC | 7h 0m |
| 2026-05-17 | QQE268 | - | May 17, 22:05 UTC | May 18, 01:35 UTC | 3h 30m |
| 2026-05-17 | QQE268 | - | May 17, 15:20 UTC | May 17, 15:40 UTC | 20m |
| 2026-05-17 | QQE268 | - | May 17, 12:25 UTC | May 17, 13:50 UTC | 1h 25m |
| 2026-05-15 | QQE211 | - | May 15, 10:45 UTC | May 15, 20:10 UTC | 9h 24m |
| 2026-05-12 | QQE211 | - | May 12, 21:45 UTC | May 13, 09:40 UTC | 11h 55m |
| 2026-05-11 | QQE211 | - | May 11, 19:25 UTC | May 11, 21:25 UTC | 2h 0m |
| 2026-05-09 | QQE526 | DEL → RST | May 9, 20:30 UTC | May 10, 13:44 UTC | 17h 15m |
| 2026-05-08 | QQE526 | - | May 8, 17:25 UTC | May 8, 18:15 UTC | 50m |
| 2026-05-07 | QQE507 | - | May 7, 07:25 UTC | May 7, 08:35 UTC | 1h 10m |
| 2026-05-07 | QQE507 | - | May 7, 06:20 UTC | May 7, 06:30 UTC | 10m |
| 2026-05-05 | QQE529 | - | May 5, 10:00 UTC | May 5, 10:40 UTC | 40m |
| 2026-05-03 | QQE529 | - | May 3, 01:35 UTC | May 3, 04:40 UTC | 3h 4m |
| 2026-04-30 | QQE528 | - | Apr 30, 14:25 UTC | Apr 30, 19:20 UTC | 4h 55m |
| 2026-04-29 | QQE528 | - | Apr 29, 08:15 UTC | Apr 29, 10:50 UTC | 2h 36m |
| 2026-04-29 | QQE951 | - | Apr 29, 00:00 UTC | Apr 29, 07:20 UTC | 7h 20m |
| 2026-04-28 | QQE951 | - | Apr 28, 01:25 UTC | Apr 28, 07:50 UTC | 6h 25m |
| 2026-04-25 | QQE750 | - | Apr 25, 22:50 UTC | Apr 26, 06:50 UTC | 8h 0m |
| 2026-04-25 | QQE750 | - | Apr 25, 19:00 UTC | Apr 25, 21:25 UTC | 2h 25m |
| 2026-04-23 | QQE202 | - | Apr 23, 04:15 UTC | Apr 23, 15:50 UTC | 11h 36m |
| 2026-04-23 | QQE202 | - | Apr 23, 03:10 UTC | Apr 23, 03:40 UTC | 30m |
| 2026-04-21 | QQE202 | - | Apr 21, 02:10 UTC | Apr 21, 02:30 UTC | 20m |
| 2026-04-20 | QQE202 | - | Apr 20, 13:20 UTC | Apr 20, 16:50 UTC | 3h 30m |
| 2026-04-18 | QQE202 | - | Apr 18, 17:50 UTC | Apr 18, 22:10 UTC | 4h 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-CHC page for operator, model, and routing details .