sensors Mode-S transponder
7C66CD
ICAO 24-bit transponder address · allocated to Australia
Currently assigned to VH-ULB · EMBRAER ERJ-190-100 · operated by NATIONAL JET EXPRESS PTY LTD
- Hex
- 7C66CD
- Octal
- 37063315
- Decimal
- 8,152,781
- Country
- AU
- Tail
- VH-ULB
- Type
- E190
- Flights observed
- 69
- Distinct callsigns
- 20
- Country
- AU
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 7C66CD 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| JTE105 | - | 10 | 2026-05-28 |
| JTE759 | National Jet Express | 6 | 2026-05-27 |
| JTE152 | - | 5 | 2026-05-11 |
| JTE123 | - | 5 | 2026-05-25 |
| JTE153 | - | 4 | 2026-05-11 |
| JTE122 | - | 4 | 2026-05-24 |
| JTE832 | - | 3 | 2026-04-29 |
| JTE942 | - | 2 | 2026-04-14 |
| JTE833 | - | 2 | 2026-04-15 |
| JTE817 | National Jet Express | 2 | 2026-05-26 |
| JTE816 | National Jet Express | 2 | 2026-05-26 |
| JTE807 | National Jet Express | 2 | 2026-05-28 |
| JTE806 | National Jet Express | 2 | 2026-05-28 |
| JTE758 | National Jet Express | 2 | 2026-04-22 |
| JTE757 | National Jet Express | 2 | 2026-05-27 |
| JTE3872 | - | 2 | 2026-05-14 |
| JTE1990 | - | 2 | 2026-05-26 |
| JTE150 | - | 2 | 2026-05-12 |
| JTE104 | - | 2 | 2026-04-16 |
| JTE943 | - | 1 | 2026-04-14 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-28 | JTE105 | PER → PER | May 28, 22:40 UTC | May 29, 09:40 UTC | 11h 0m |
| 2026-05-28 | JTE807 | KGI → PER | May 28, 06:25 UTC | May 28, 07:30 UTC | 1h 5m |
| 2026-05-28 | JTE806 | PER → KGI | May 28, 04:50 UTC | May 28, 05:35 UTC | 45m |
| 2026-05-27 | JTE759 | WUI → PER | May 27, 23:10 UTC | May 28, 02:05 UTC | 2h 55m |
| 2026-05-27 | JTE757 | WUI → PER | May 27, 11:20 UTC | May 27, 12:35 UTC | 1h 15m |
| 2026-05-27 | JTE756 | PER → WUI | May 27, 07:05 UTC | May 27, 07:30 UTC | 25m |
| 2026-05-26 | JTE1990 | PER → PER | May 26, 21:59 UTC | May 27, 02:29 UTC | 4h 30m |
| 2026-05-26 | JTE817 | KGI → PER | May 26, 07:59 UTC | May 26, 09:09 UTC | 1h 10m |
| 2026-05-26 | JTE816 | PER → KGI | May 26, 06:25 UTC | May 26, 07:10 UTC | 45m |
| 2026-05-25 | JTE763 | WUI → PER | May 25, 23:10 UTC | May 26, 02:10 UTC | 3h 0m |
| 2026-05-25 | JTE807 | KGI → PER | May 25, 07:10 UTC | May 25, 08:10 UTC | 1h 0m |
| 2026-05-25 | JTE806 | PER → KGI | May 25, 05:00 UTC | May 25, 05:45 UTC | 45m |
| 2026-05-25 | JTE123 | - | May 25, 01:55 UTC | May 25, 02:15 UTC | 20m |
| 2026-05-24 | JTE122 | - | May 24, 21:35 UTC | May 24, 21:50 UTC | 15m |
| 2026-05-23 | JTE182 | PER → PER | May 23, 00:15 UTC | May 23, 04:40 UTC | 4h 24m |
| 2026-05-21 | JTE105 | PER → PER | May 21, 22:45 UTC | May 22, 09:30 UTC | 10h 45m |
| 2026-05-20 | JTE759 | WUI → PER | May 20, 22:55 UTC | May 21, 02:00 UTC | 3h 5m |
| 2026-05-20 | JTE757 | WUI → PER | May 20, 07:15 UTC | May 20, 12:10 UTC | 4h 55m |
| 2026-05-19 | JTE1990 | PER → PER | May 19, 22:00 UTC | May 20, 05:20 UTC | 7h 21m |
| 2026-05-18 | JTE105 | PER → PER | May 18, 23:20 UTC | May 19, 10:55 UTC | 11h 35m |
| 2026-05-17 | JTE122 | PER → PER | May 17, 22:10 UTC | May 18, 02:25 UTC | 4h 15m |
| 2026-05-14 | JTE105 | PER → PER | May 14, 22:40 UTC | May 15, 09:40 UTC | 11h 0m |
| 2026-05-14 | JTE3872 | PER → PER | May 14, 00:20 UTC | May 14, 08:05 UTC | 7h 45m |
| 2026-05-13 | JTE505 | BNE → ADL | May 13, 16:05 UTC | May 13, 17:00 UTC | 55m |
| 2026-05-12 | JTE150 | - | May 12, 22:50 UTC | May 12, 23:35 UTC | 45m |
| 2026-05-12 | JTE105 | - | May 12, 09:55 UTC | May 12, 11:05 UTC | 1h 10m |
| 2026-05-11 | JTE153 | - | May 11, 09:05 UTC | May 11, 10:25 UTC | 1h 20m |
| 2026-05-11 | JTE152 | - | May 11, 06:55 UTC | May 11, 07:35 UTC | 40m |
| 2026-05-10 | JTE123 | PER → PER | May 10, 21:30 UTC | May 11, 01:45 UTC | 4h 15m |
| 2026-05-07 | JTE123 | PER → PER | May 7, 21:30 UTC | May 8, 02:09 UTC | 4h 40m |
| 2026-05-07 | JTE3872 | PER → PER | May 7, 00:10 UTC | May 7, 07:20 UTC | 7h 10m |
| 2026-05-04 | JTE152 | PER → PER | May 4, 06:55 UTC | May 4, 07:35 UTC | 40m |
| 2026-05-03 | JTE123 | PER → PER | May 3, 21:29 UTC | May 4, 02:00 UTC | 4h 30m |
| 2026-04-30 | JTE105 | PER → PER | Apr 30, 22:40 UTC | May 1, 09:35 UTC | 10h 55m |
| 2026-04-30 | JTE767 | WUI → PER | Apr 30, 07:40 UTC | Apr 30, 12:15 UTC | 4h 35m |
| 2026-04-29 | JTE759 | WUI → PER | Apr 29, 23:40 UTC | Apr 30, 02:35 UTC | 2h 55m |
| 2026-04-29 | JTE832 | PER → PER | Apr 29, 00:25 UTC | Apr 29, 03:19 UTC | 2h 55m |
| 2026-04-27 | JTE105 | PER → PER | Apr 27, 23:15 UTC | Apr 28, 11:05 UTC | 11h 50m |
| 2026-04-27 | JTE153 | - | Apr 27, 09:20 UTC | Apr 27, 10:15 UTC | 55m |
| 2026-04-27 | JTE152 | - | Apr 27, 07:15 UTC | Apr 27, 08:00 UTC | 45m |
| 2026-04-26 | JTE122 | PER → PER | Apr 26, 21:40 UTC | Apr 27, 02:15 UTC | 4h 35m |
| 2026-04-23 | JTE105 | PER → PER | Apr 23, 23:00 UTC | Apr 24, 09:30 UTC | 10h 30m |
| 2026-04-23 | JTE759 | WUI → PER | Apr 23, 01:45 UTC | Apr 23, 03:00 UTC | 1h 15m |
| 2026-04-22 | JTE758 | PER → WUI | Apr 22, 23:25 UTC | Apr 23, 00:05 UTC | 40m |
| 2026-04-22 | JTE151 | - | Apr 22, 09:20 UTC | Apr 22, 10:25 UTC | 1h 5m |
| 2026-04-21 | JTE150 | - | Apr 21, 22:50 UTC | Apr 21, 23:35 UTC | 45m |
| 2026-04-21 | JTE3870 | PER → PER | Apr 21, 00:00 UTC | Apr 21, 07:00 UTC | 7h 0m |
| 2026-04-20 | JTE153 | - | Apr 20, 09:10 UTC | Apr 20, 10:15 UTC | 1h 5m |
| 2026-04-20 | JTE152 | - | Apr 20, 07:00 UTC | Apr 20, 07:45 UTC | 45m |
| 2026-04-19 | JTE122 | PER → PER | Apr 19, 21:25 UTC | Apr 20, 02:00 UTC | 4h 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 VH-ULB page for operator, model, and routing details .