sensors Mode-S transponder
7C8071
ICAO 24-bit transponder address · allocated to Australia
Currently assigned to VH-ZNN · BOEING 787-9 Dreamliner · operated by QANTAS AIRWAYS LIMITED
- Hex
- 7C8071
- Octal
- 37100161
- Decimal
- 8,159,345
- Country
- AU
- Tail
- VH-ZNN
- Type
- B789
- Flights observed
- 92
- Distinct callsigns
- 20
- Country
- AU
- Last broadcast
- 1d ago
Last known position
Country allocation
The ICAO 24-bit address 7C8071 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 |
|---|---|---|---|
| QFA219 | Qantas | 16 | 2026-05-25 |
| QFA34 | Qantas | 11 | 2026-05-15 |
| QFA10 | Qantas | 11 | 2026-05-24 |
| QFA33 | Qantas | 7 | 2026-04-16 |
| QFA4 | - | 6 | 2026-05-19 |
| QFA3 | - | 6 | 2026-05-18 |
| QFA255 | Qantas | 5 | 2026-05-25 |
| QFA93 | Qantas | 4 | 2026-05-28 |
| QFA94 | Qantas | 3 | 2026-05-06 |
| QFA73 | Qantas | 2 | 2026-04-17 |
| QFA647 | Qantas | 2 | 2026-04-22 |
| QFA6001 | - | 2 | 2026-05-27 |
| QFA6 | - | 2 | 2026-05-22 |
| QFA5 | Qantas | 2 | 2026-05-20 |
| QFA28 | Qantas | 2 | 2026-04-21 |
| QFA27 | Qantas | 2 | 2026-04-21 |
| QFA256 | Qantas | 2 | 2026-05-26 |
| QFA76 | Qantas | 1 | 2026-04-28 |
| QFA75 | Qantas | 1 | 2026-04-27 |
| QFA74 | Qantas | 1 | 2026-04-18 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-28 | QFA93 | MEL → LAX | May 28, 00:20 UTC | May 28, 13:55 UTC | 13h 35m |
| 2026-05-27 | QFA6001 | SYD → MEL | May 27, 20:55 UTC | May 27, 21:55 UTC | 1h 0m |
| 2026-05-26 | QFA256 | CDG → SIN | May 26, 22:39 UTC | May 27, 05:55 UTC | 7h 15m |
| 2026-05-26 | QFA256 | CDG → SIN | May 26, 07:19 UTC | May 26, 19:25 UTC | 12h 5m |
| 2026-05-25 | QFA255 | SYD → SIN | May 25, 14:40 UTC | May 26, 03:45 UTC | 13h 5m |
| 2026-05-25 | QFA219 | PER → SIN | May 25, 06:35 UTC | May 25, 11:10 UTC | 4h 35m |
| 2026-05-24 | QFA10 | LHR → MEL | May 24, 11:10 UTC | May 25, 03:40 UTC | 16h 30m |
| 2026-05-23 | QFA219 | PER → SIN | May 23, 14:50 UTC | May 24, 03:50 UTC | 13h 0m |
| 2026-05-23 | QFA255 | SYD → SIN | May 23, 04:10 UTC | May 23, 04:45 UTC | 35m |
| 2026-05-22 | QFA6 | PER → SYD | May 22, 02:45 UTC | May 22, 06:25 UTC | 3h 40m |
| 2026-05-21 | QFA6 | - | May 21, 09:05 UTC | May 22, 00:10 UTC | 15h 5m |
| 2026-05-20 | QFA5 | SYD → FRA | May 20, 11:50 UTC | May 21, 03:50 UTC | 16h 0m |
| 2026-05-20 | QFA5 | SYD → FRA | May 20, 04:25 UTC | May 20, 09:05 UTC | 4h 41m |
| 2026-05-19 | QFA4 | - | May 19, 19:00 UTC | May 19, 22:10 UTC | 3h 10m |
| 2026-05-19 | QFA4 | JFK → AKL | May 19, 00:50 UTC | May 19, 17:15 UTC | 16h 25m |
| 2026-05-18 | QFA3 | - | May 18, 05:20 UTC | May 18, 20:30 UTC | 15h 9m |
| 2026-05-18 | QFA3 | SYD → AKL | May 18, 00:05 UTC | May 18, 02:45 UTC | 2h 40m |
| 2026-05-17 | QFA4 | - | May 17, 19:05 UTC | May 17, 22:01 UTC | 2h 55m |
| 2026-05-17 | QFA4 | JFK → AKL | May 17, 00:05 UTC | May 17, 16:45 UTC | 16h 40m |
| 2026-05-16 | QFA3 | - | May 16, 04:45 UTC | May 16, 20:00 UTC | 15h 16m |
| 2026-05-16 | QFA3 | - | May 16, 00:00 UTC | May 16, 02:35 UTC | 2h 35m |
| 2026-05-15 | QFA34 | PER → SYD | May 15, 02:45 UTC | May 15, 06:25 UTC | 3h 40m |
| 2026-05-14 | QFA34 | PER → SYD | May 14, 08:45 UTC | May 15, 00:30 UTC | 15h 45m |
| 2026-05-13 | QFA255 | SYD → SIN | May 13, 14:40 UTC | May 14, 03:30 UTC | 12h 50m |
| 2026-05-13 | QFA219 | PER → SIN | May 13, 06:20 UTC | May 13, 10:45 UTC | 4h 25m |
| 2026-05-12 | QFA10 | LHR → MEL | May 12, 11:20 UTC | May 13, 03:20 UTC | 16h 0m |
| 2026-05-11 | QFA219 | PER → SIN | May 11, 14:30 UTC | May 12, 03:45 UTC | 13h 15m |
| 2026-05-11 | QFA219 | PER → SIN | May 11, 06:15 UTC | May 11, 09:40 UTC | 3h 25m |
| 2026-05-10 | QFA10 | LHR → MEL | May 10, 11:35 UTC | May 11, 03:40 UTC | 16h 5m |
| 2026-05-09 | QFA219 | PER → SIN | May 9, 14:30 UTC | May 10, 03:45 UTC | 13h 15m |
| 2026-05-09 | QFA255 | SYD → SIN | May 9, 04:15 UTC | May 9, 04:50 UTC | 35m |
| 2026-05-09 | QFA6001 | SYD → EZE | May 9, 00:10 UTC | May 9, 01:15 UTC | 1h 5m |
| 2026-05-08 | QFA16 | LAX → BNE | May 8, 05:29 UTC | May 8, 18:55 UTC | 13h 25m |
| 2026-05-07 | QFA93 | MEL → LAX | May 7, 00:30 UTC | May 7, 14:15 UTC | 13h 45m |
| 2026-05-06 | QFA94 | LAX → MEL | May 6, 05:25 UTC | May 6, 20:25 UTC | 14h 59m |
| 2026-05-05 | QFA93 | MEL → LAX | May 5, 00:10 UTC | May 5, 13:30 UTC | 13h 20m |
| 2026-05-04 | QFA94 | LAX → MEL | May 4, 20:20 UTC | May 4, 20:50 UTC | 30m |
| 2026-05-04 | QFA94 | LAX → MEL | May 4, 05:25 UTC | May 4, 20:15 UTC | 14h 51m |
| 2026-05-01 | QFA93 | MEL → LAX | May 1, 00:30 UTC | May 1, 13:45 UTC | 13h 15m |
| 2026-04-30 | QFA22 | NRT → SYD | Apr 30, 02:00 UTC | Apr 30, 18:50 UTC | 16h 50m |
| 2026-04-29 | QFA21 | SYD → NRT | Apr 29, 04:05 UTC | Apr 29, 19:20 UTC | 15h 16m |
| 2026-04-29 | QFA6153 | BNE → MEL | Apr 29, 00:54 UTC | Apr 29, 01:59 UTC | 1h 5m |
| 2026-04-28 | QFA76 | YVR → SYD | Apr 28, 05:25 UTC | Apr 28, 20:05 UTC | 14h 40m |
| 2026-04-27 | QFA75 | SYD → YVR | Apr 27, 10:45 UTC | Apr 28, 00:25 UTC | 13h 40m |
| 2026-04-27 | QFA34 | PER → SYD | Apr 27, 03:10 UTC | Apr 27, 06:55 UTC | 3h 45m |
| 2026-04-26 | QFA34 | PER → SYD | Apr 26, 08:50 UTC | Apr 27, 01:05 UTC | 16h 15m |
| 2026-04-25 | QFA255 | SYD → SIN | Apr 25, 14:45 UTC | Apr 26, 04:00 UTC | 13h 15m |
| 2026-04-25 | QFA219 | PER → SIN | Apr 25, 11:15 UTC | Apr 25, 11:30 UTC | 15m |
| 2026-04-25 | QFA219 | PER → SIN | Apr 25, 06:15 UTC | Apr 25, 06:50 UTC | 35m |
| 2026-04-24 | QFA10 | LHR → MEL | Apr 24, 11:15 UTC | Apr 25, 03:10 UTC | 15h 55m |
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-ZNN page for operator, model, and routing details .