sensors Mode-S transponder
06A1DB
ICAO 24-bit transponder address · allocated to Qatar
Currently assigned to A7-CHB · GULFSTREAM G700
- Hex
- 06A1DB
- Octal
- 01520733
- Decimal
- 434,651
- Country
- QA
- Tail
- A7-CHB
- Type
- GA7C
- Flights observed
- 35
- Distinct callsigns
- 13
- Country
- QA
- Last broadcast
- 4d ago
Last known position
Country allocation
The ICAO 24-bit address 06A1DB 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 |
|---|---|---|---|
| QQE754 | - | 6 | 2026-06-16 |
| QQE937 | - | 4 | 2026-05-03 |
| QQE510 | - | 3 | 2026-06-03 |
| QQE240 | - | 3 | 2026-06-01 |
| QQE235 | - | 3 | 2026-06-07 |
| QQE218 | - | 3 | 2026-06-14 |
| QQE202 | - | 3 | 2026-05-07 |
| QQE798 | - | 2 | 2026-05-13 |
| QQE716 | - | 2 | 2026-06-08 |
| QQE526 | - | 2 | 2026-05-23 |
| QQE305 | - | 2 | 2026-05-29 |
| QQE748 | - | 1 | 2026-06-01 |
| QQE214 | - | 1 | 2026-05-29 |
Recent flights last 35
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-06-16 | QQE754 | - | Jun 16, 15:24 UTC | Jun 16, 21:50 UTC | 6h 26m |
| 2026-06-14 | QQE218 | - | Jun 14, 09:40 UTC | Jun 14, 20:40 UTC | 11h 0m |
| 2026-06-14 | QQE218 | - | Jun 14, 05:50 UTC | Jun 14, 06:25 UTC | 35m |
| 2026-06-13 | QQE218 | - | Jun 13, 06:00 UTC | Jun 13, 11:55 UTC | 5h 55m |
| 2026-06-08 | QQE716 | - | Jun 8, 20:55 UTC | Jun 9, 06:50 UTC | 9h 55m |
| 2026-06-08 | QQE716 | SJC → LAX | Jun 8, 18:05 UTC | Jun 8, 19:00 UTC | 55m |
| 2026-06-07 | QQE235 | - | Jun 7, 20:35 UTC | Jun 7, 21:25 UTC | 50m |
| 2026-06-07 | QQE235 | - | Jun 7, 18:00 UTC | Jun 7, 19:10 UTC | 1h 10m |
| 2026-06-06 | QQE235 | - | Jun 6, 07:05 UTC | Jun 6, 07:20 UTC | 15m |
| 2026-06-03 | QQE510 | - | Jun 3, 07:20 UTC | Jun 3, 07:50 UTC | 30m |
| 2026-06-02 | QQE510 | - | Jun 2, 17:15 UTC | Jun 2, 19:55 UTC | 2h 40m |
| 2026-06-01 | QQE510 | - | Jun 1, 22:05 UTC | Jun 1, 23:45 UTC | 1h 40m |
| 2026-06-01 | QQE748 | - | Jun 1, 12:45 UTC | Jun 1, 20:30 UTC | 7h 45m |
| 2026-06-01 | QQE240 | - | Jun 1, 05:40 UTC | Jun 1, 06:15 UTC | 35m |
| 2026-05-31 | QQE240 | FOR → MCO | May 31, 18:35 UTC | Jun 1, 02:05 UTC | 7h 30m |
| 2026-05-30 | QQE240 | - | May 30, 20:55 UTC | May 30, 23:05 UTC | 2h 10m |
| 2026-05-29 | QQE214 | - | May 29, 13:55 UTC | May 29, 22:15 UTC | 8h 20m |
| 2026-05-29 | QQE305 | - | May 29, 09:50 UTC | May 29, 10:35 UTC | 45m |
| 2026-05-28 | QQE305 | - | May 28, 22:40 UTC | May 29, 09:05 UTC | 10h 25m |
| 2026-05-28 | QQE754 | - | May 28, 13:40 UTC | May 28, 14:40 UTC | 1h 0m |
| 2026-05-27 | QQE754 | - | May 27, 07:10 UTC | May 27, 08:05 UTC | 55m |
| 2026-05-24 | QQE754 | LIS → MAD | May 24, 16:35 UTC | May 24, 17:30 UTC | 55m |
| 2026-05-24 | QQE754 | BCN → LIS | May 24, 12:25 UTC | May 24, 13:50 UTC | 1h 25m |
| 2026-05-23 | QQE754 | MAD → BCN | May 23, 12:05 UTC | May 23, 13:00 UTC | 55m |
| 2026-05-23 | QQE526 | - | May 23, 03:45 UTC | May 23, 10:00 UTC | 6h 15m |
| 2026-05-22 | QQE526 | SAV → TEB | May 22, 01:50 UTC | May 22, 03:30 UTC | 1h 40m |
| 2026-05-13 | QQE798 | - | May 13, 14:51 UTC | May 13, 16:15 UTC | 1h 25m |
| 2026-05-08 | QQE798 | - | May 8, 18:25 UTC | May 8, 20:40 UTC | 2h 15m |
| 2026-05-07 | QQE202 | - | May 7, 16:15 UTC | May 7, 18:10 UTC | 1h 55m |
| 2026-05-07 | QQE202 | MAD → MIA | May 7, 05:05 UTC | May 7, 13:45 UTC | 8h 40m |
| 2026-05-06 | QQE202 | - | May 6, 22:25 UTC | May 7, 03:05 UTC | 4h 40m |
| 2026-05-03 | QQE937 | - | May 3, 18:55 UTC | May 3, 19:15 UTC | 20m |
| 2026-05-01 | QQE937 | - | May 1, 10:30 UTC | May 1, 15:25 UTC | 4h 55m |
| 2026-05-01 | QQE937 | - | May 1, 05:30 UTC | May 1, 07:15 UTC | 1h 45m |
| 2026-04-30 | QQE937 | - | Apr 30, 11:05 UTC | Apr 30, 12:20 UTC | 1h 15m |
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-CHB page for operator, model, and routing details .