sensors Mode-S transponder
7C67D3
ICAO 24-bit transponder address · allocated to Australia
Currently assigned to VH-USL · CESSNA 172 Skyhawk · operated by AERO-STAR AVIATION PTY LTD
- Hex
- 7C67D3
- Octal
- 37063723
- Decimal
- 8,153,043
- Country
- AU
- Tail
- VH-USL
- Type
- C172
- Flights observed
- 168
- Distinct callsigns
- 1
- Country
- AU
- Last broadcast
- Jul 23, 05:30 UTC
Current position
Country allocation
The ICAO 24-bit address 7C67D3 falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| USL | - | 168 | 2026-07-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | USL | - | Jul 23, 04:35 UTC | Jul 23, 05:25 UTC | 50m |
| 2026-07-23 | USL | - | Jul 23, 02:30 UTC | Jul 23, 02:45 UTC | 15m |
| 2026-07-23 | USL | - | Jul 23, 00:25 UTC | Jul 23, 00:45 UTC | 20m |
| 2026-07-21 | USL | - | Jul 21, 07:00 UTC | Jul 21, 07:15 UTC | 15m |
| 2026-07-21 | USL | - | Jul 21, 05:20 UTC | Jul 21, 05:40 UTC | 20m |
| 2026-07-21 | USL | - | Jul 21, 00:55 UTC | Jul 21, 01:25 UTC | 30m |
| 2026-07-20 | USL | - | Jul 20, 23:10 UTC | Jul 21, 00:10 UTC | 1h 0m |
| 2026-07-20 | USL | - | Jul 20, 01:05 UTC | Jul 20, 03:55 UTC | 2h 50m |
| 2026-07-19 | USL | - | Jul 19, 23:00 UTC | Jul 19, 23:05 UTC | 5m |
| 2026-07-19 | USL | - | Jul 19, 22:20 UTC | Jul 19, 22:45 UTC | 25m |
| 2026-07-19 | USL | - | Jul 19, 05:10 UTC | Jul 19, 05:25 UTC | 15m |
| 2026-07-19 | USL | - | Jul 19, 03:00 UTC | Jul 19, 03:30 UTC | 30m |
| 2026-07-19 | USL | - | Jul 19, 00:55 UTC | Jul 19, 01:55 UTC | 1h 0m |
| 2026-07-08 | USL | - | Jul 8, 06:35 UTC | Jul 8, 06:55 UTC | 20m |
| 2026-07-08 | USL | - | Jul 8, 04:40 UTC | Jul 8, 05:05 UTC | 25m |
| 2026-07-08 | USL | - | Jul 8, 01:25 UTC | Jul 8, 01:50 UTC | 25m |
| 2026-07-07 | USL | - | Jul 7, 23:20 UTC | Jul 7, 23:35 UTC | 15m |
| 2026-07-07 | USL | - | Jul 7, 22:50 UTC | Jul 7, 23:10 UTC | 20m |
| 2026-07-07 | USL | - | Jul 7, 04:50 UTC | Jul 7, 05:45 UTC | 55m |
| 2026-07-07 | USL | - | Jul 7, 01:30 UTC | Jul 7, 03:45 UTC | 2h 15m |
| 2026-07-06 | USL | - | Jul 6, 03:20 UTC | Jul 6, 06:10 UTC | 2h 50m |
| 2026-07-05 | USL | - | Jul 5, 01:45 UTC | Jul 5, 02:25 UTC | 40m |
| 2026-07-02 | USL | - | Jul 2, 23:30 UTC | Jul 2, 23:40 UTC | 10m |
| 2026-06-29 | USL | - | Jun 29, 04:20 UTC | Jun 29, 04:55 UTC | 35m |
| 2026-06-29 | USL | - | Jun 29, 02:45 UTC | Jun 29, 03:14 UTC | 30m |
| 2026-06-29 | USL | - | Jun 29, 01:14 UTC | Jun 29, 01:44 UTC | 30m |
| 2026-06-28 | USL | - | Jun 28, 22:55 UTC | Jun 28, 22:59 UTC | 5m |
| 2026-06-28 | USL | - | Jun 28, 22:24 UTC | Jun 28, 22:45 UTC | 20m |
| 2026-06-28 | USL | - | Jun 28, 03:40 UTC | Jun 28, 04:05 UTC | 25m |
| 2026-06-28 | USL | - | Jun 28, 02:05 UTC | Jun 28, 02:44 UTC | 40m |
| 2026-06-28 | USL | - | Jun 28, 00:15 UTC | Jun 28, 01:15 UTC | 1h 0m |
| 2026-06-27 | USL | - | Jun 27, 03:49 UTC | Jun 27, 04:24 UTC | 35m |
| 2026-06-26 | USL | - | Jun 26, 04:30 UTC | Jun 26, 05:24 UTC | 55m |
| 2026-06-26 | USL | - | Jun 26, 02:05 UTC | Jun 26, 02:54 UTC | 50m |
| 2026-06-25 | USL | - | Jun 25, 23:59 UTC | Jun 26, 00:39 UTC | 40m |
| 2026-06-25 | USL | - | Jun 25, 03:59 UTC | Jun 25, 05:00 UTC | 1h 0m |
| 2026-06-25 | USL | - | Jun 25, 01:19 UTC | Jun 25, 02:25 UTC | 1h 5m |
| 2026-06-24 | USL | - | Jun 24, 23:54 UTC | Jun 25, 00:29 UTC | 35m |
| 2026-06-24 | USL | - | Jun 24, 06:50 UTC | Jun 24, 07:50 UTC | 1h 0m |
| 2026-06-24 | USL | - | Jun 24, 04:44 UTC | Jun 24, 05:20 UTC | 35m |
| 2026-06-24 | USL | - | Jun 24, 03:24 UTC | Jun 24, 04:05 UTC | 40m |
| 2026-06-23 | USL | - | Jun 23, 23:34 UTC | Jun 24, 00:15 UTC | 40m |
| 2026-06-23 | USL | - | Jun 23, 03:34 UTC | Jun 23, 04:14 UTC | 40m |
| 2026-06-23 | USL | - | Jun 23, 01:40 UTC | Jun 23, 02:20 UTC | 40m |
| 2026-06-22 | USL | - | Jun 22, 23:24 UTC | Jun 23, 00:15 UTC | 50m |
| 2026-06-22 | USL | - | Jun 22, 06:05 UTC | Jun 22, 06:45 UTC | 40m |
| 2026-06-22 | USL | - | Jun 22, 04:30 UTC | Jun 22, 04:59 UTC | 30m |
| 2026-06-22 | USL | - | Jun 22, 01:25 UTC | Jun 22, 02:10 UTC | 45m |
| 2026-06-21 | USL | - | Jun 21, 23:24 UTC | Jun 22, 00:04 UTC | 40m |
| 2026-06-21 | USL | - | Jun 21, 06:24 UTC | Jun 21, 06:55 UTC | 30m |
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 VH-USL page for operator, model, and routing details .