sensors Mode-S transponder
7C4920
ICAO 24-bit transponder address · allocated to Australia
Currently assigned to VH-OQA · AIRBUS A-380-800 · operated by QANTAS AIRWAYS LIMITED
- Hex
- 7C4920
- Octal
- 37044440
- Decimal
- 8,145,184
- Country
- AU
- Tail
- VH-OQA
- Type
- A388
- Flights observed
- 139
- Distinct callsigns
- 15
- Country
- AU
- Last broadcast
- Jul 26, 17:45 UTC
Last known position
Country allocation
The ICAO 24-bit address 7C4920 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 15 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| QFA2 | - | 33 | 2026-07-14 |
| QFA1 | - | 33 | 2026-07-12 |
| QFA12 | Qantas | 17 | 2026-07-25 |
| QFA11 | Qantas | 13 | 2026-07-24 |
| QFA8 | Qantas | 12 | 2026-07-22 |
| QFA7 | Qantas | 11 | 2026-07-26 |
| QFA64 | Qantas | 5 | 2026-07-24 |
| QFA63 | Qantas | 4 | 2026-07-23 |
| QFA82 | Qantas | 3 | 2026-06-05 |
| QFA81 | Qantas | 2 | 2026-06-05 |
| QFA336 | - | 2 | 2026-06-23 |
| QFA94 | Qantas | 1 | 2026-05-31 |
| QFA93 | Qantas | 1 | 2026-06-01 |
| QFA6043 | - | 1 | 2026-06-21 |
| QFA6004 | Qantas | 1 | 2026-06-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | QFA7 | SYD → DFW | Jul 26, 02:55 UTC | Jul 26, 17:40 UTC | 14h 46m |
| 2026-07-25 | QFA12 | LAX → SYD | Jul 25, 20:15 UTC | Jul 25, 21:50 UTC | 1h 35m |
| 2026-07-25 | QFA12 | LAX → SYD | Jul 25, 07:50 UTC | Jul 25, 08:15 UTC | 25m |
| 2026-07-24 | QFA11 | SYD → LAX | Jul 24, 08:45 UTC | Jul 24, 21:55 UTC | 13h 10m |
| 2026-07-24 | QFA64 | JNB → SYD | Jul 24, 03:40 UTC | Jul 24, 05:10 UTC | 1h 30m |
| 2026-07-23 | QFA64 | JNB → SYD | Jul 23, 17:25 UTC | Jul 23, 17:35 UTC | 10m |
| 2026-07-23 | QFA63 | SYD → JNB | Jul 23, 00:35 UTC | Jul 23, 02:30 UTC | 1h 55m |
| 2026-07-22 | QFA8 | DFW → SYD | Jul 22, 04:55 UTC | Jul 22, 20:55 UTC | 16h 0m |
| 2026-07-21 | QFA7 | SYD → DFW | Jul 21, 02:35 UTC | Jul 21, 17:45 UTC | 15h 10m |
| 2026-07-20 | QFA12 | LAX → SYD | Jul 20, 07:20 UTC | Jul 20, 21:35 UTC | 14h 15m |
| 2026-07-19 | QFA11 | SYD → LAX | Jul 19, 08:00 UTC | Jul 19, 21:20 UTC | 13h 20m |
| 2026-07-18 | QFA64 | - | Jul 18, 17:15 UTC | Jul 19, 04:45 UTC | 11h 30m |
| 2026-07-18 | QFA63 | SYD → JNB | Jul 18, 00:25 UTC | Jul 18, 14:10 UTC | 13h 46m |
| 2026-07-17 | QFA12 | - | Jul 17, 07:35 UTC | Jul 17, 21:20 UTC | 13h 45m |
| 2026-07-15 | QFA11 | - | Jul 15, 08:20 UTC | Jul 15, 21:35 UTC | 13h 15m |
| 2026-07-14 | QFA2 | - | Jul 14, 12:05 UTC | Jul 14, 19:05 UTC | 7h 0m |
| 2026-07-13 | QFA2 | - | Jul 13, 20:55 UTC | Jul 14, 09:30 UTC | 12h 35m |
| 2026-07-12 | QFA1 | - | Jul 12, 16:01 UTC | Jul 13, 05:25 UTC | 13h 25m |
| 2026-07-12 | QFA1 | - | Jul 12, 05:25 UTC | Jul 12, 09:20 UTC | 3h 55m |
| 2026-07-11 | QFA2 | - | Jul 11, 18:10 UTC | Jul 11, 19:05 UTC | 55m |
| 2026-07-10 | QFA2 | - | Jul 10, 20:25 UTC | Jul 11, 08:50 UTC | 12h 25m |
| 2026-07-09 | QFA1 | - | Jul 9, 16:15 UTC | Jul 10, 05:40 UTC | 13h 25m |
| 2026-07-09 | QFA1 | - | Jul 9, 05:20 UTC | Jul 9, 05:55 UTC | 35m |
| 2026-07-08 | QFA2 | - | Jul 8, 18:25 UTC | Jul 8, 19:05 UTC | 40m |
| 2026-07-07 | QFA2 | - | Jul 7, 20:10 UTC | Jul 8, 08:30 UTC | 12h 20m |
| 2026-07-06 | QFA1 | - | Jul 6, 15:50 UTC | Jul 7, 05:20 UTC | 13h 30m |
| 2026-07-06 | QFA1 | - | Jul 6, 05:35 UTC | Jul 6, 06:10 UTC | 35m |
| 2026-07-05 | QFA8 | DFW → SYD | Jul 5, 04:30 UTC | Jul 5, 20:30 UTC | 16h 0m |
| 2026-07-04 | QFA7 | - | Jul 4, 02:30 UTC | Jul 4, 17:15 UTC | 14h 45m |
| 2026-07-03 | QFA12 | - | Jul 3, 19:40 UTC | Jul 3, 21:15 UTC | 1h 35m |
| 2026-07-03 | QFA12 | - | Jul 3, 07:00 UTC | Jul 3, 07:25 UTC | 25m |
| 2026-07-01 | QFA11 | - | Jul 1, 10:00 UTC | Jul 1, 22:40 UTC | 12h 40m |
| 2026-06-29 | QFA2 | - | Jun 29, 18:34 UTC | Jun 29, 19:09 UTC | 35m |
| 2026-06-29 | QFA2 | - | Jun 29, 12:09 UTC | Jun 29, 12:20 UTC | 10m |
| 2026-06-28 | QFA2 | - | Jun 28, 20:25 UTC | Jun 29, 09:00 UTC | 12h 35m |
| 2026-06-27 | QFA1 | - | Jun 27, 17:59 UTC | Jun 28, 07:09 UTC | 13h 10m |
| 2026-06-27 | QFA1 | - | Jun 27, 05:15 UTC | Jun 27, 05:49 UTC | 35m |
| 2026-06-26 | QFA12 | - | Jun 26, 07:00 UTC | Jun 26, 21:04 UTC | 14h 5m |
| 2026-06-24 | QFA11 | - | Jun 24, 12:30 UTC | Jun 25, 01:04 UTC | 12h 35m |
| 2026-06-23 | QFA6004 | BNE → SYD | Jun 23, 09:29 UTC | Jun 23, 10:24 UTC | 55m |
| 2026-06-23 | QFA336 | - | Jun 23, 05:04 UTC | Jun 23, 06:19 UTC | 1h 15m |
| 2026-06-22 | QFA336 | - | Jun 22, 08:25 UTC | Jun 22, 20:44 UTC | 12h 20m |
| 2026-06-21 | QFA6043 | DFW → LGW | Jun 21, 20:54 UTC | Jun 22, 05:29 UTC | 8h 35m |
| 2026-06-21 | QFA7 | SYD → DFW | Jun 21, 02:50 UTC | Jun 21, 17:29 UTC | 14h 40m |
| 2026-06-20 | QFA2 | - | Jun 20, 12:04 UTC | Jun 20, 12:14 UTC | 10m |
| 2026-06-19 | QFA2 | - | Jun 19, 21:34 UTC | Jun 20, 09:49 UTC | 12h 15m |
| 2026-06-18 | QFA1 | - | Jun 18, 18:10 UTC | Jun 19, 07:25 UTC | 13h 14m |
| 2026-06-18 | QFA1 | - | Jun 18, 08:00 UTC | Jun 18, 09:50 UTC | 1h 50m |
| 2026-06-17 | QFA2 | - | Jun 17, 18:25 UTC | Jun 17, 19:05 UTC | 40m |
| 2026-06-16 | QFA2 | - | Jun 16, 20:30 UTC | Jun 17, 08:40 UTC | 12h 10m |
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-OQA page for operator, model, and routing details .