sensors Mode-S transponder
76CD71
ICAO 24-bit transponder address · allocated to Singapore
Currently assigned to 9V-SKQ · AIRBUS A-380-800
- Hex
- 76CD71
- Octal
- 35546561
- Decimal
- 7,785,841
- Country
- SG
- Tail
- 9V-SKQ
- Type
- A388
- Flights observed
- 190
- Distinct callsigns
- 14
- Country
- SG
- Last broadcast
- 3h ago
Last known position
Country allocation
The ICAO 24-bit address 76CD71 falls within the block assigned to Singapore (SG) by ICAO Annex 10, Volume III. Every aircraft registered in Singapore 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SIA424 | - | 23 | 2026-07-01 |
| SIA423 | Singapore Airlines | 19 | 2026-07-01 |
| SIA322 | - | 17 | 2026-07-13 |
| SIA317 | - | 16 | 2026-07-11 |
| SIA326 | - | 15 | 2026-07-12 |
| SIA325 | - | 15 | 2026-07-12 |
| SIA308 | - | 15 | 2026-07-04 |
| SIA403 | Singapore Airlines | 14 | 2026-06-20 |
| SIA406 | - | 13 | 2026-06-20 |
| SIA893 | - | 12 | 2026-07-10 |
| SIA892 | - | 12 | 2026-07-10 |
| SIA319 | Singapore Airlines | 12 | 2026-07-04 |
| SIA830 | - | 4 | 2026-06-24 |
| SIA833 | Singapore Airlines | 3 | 2026-05-24 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-13 | SIA322 | - | Jul 13, 15:30 UTC | Jul 14, 04:30 UTC | 13h 0m |
| 2026-07-12 | SIA325 | - | Jul 12, 20:01 UTC | Jul 13, 07:35 UTC | 11h 35m |
| 2026-07-12 | SIA326 | - | Jul 12, 05:25 UTC | Jul 12, 17:35 UTC | 12h 10m |
| 2026-07-11 | SIA317 | - | Jul 11, 11:30 UTC | Jul 11, 23:35 UTC | 12h 5m |
| 2026-07-10 | SIA322 | - | Jul 10, 15:25 UTC | Jul 11, 04:30 UTC | 13h 5m |
| 2026-07-10 | SIA893 | - | Jul 10, 10:50 UTC | Jul 10, 11:25 UTC | 35m |
| 2026-07-10 | SIA893 | - | Jul 10, 08:20 UTC | Jul 10, 08:35 UTC | 15m |
| 2026-07-10 | SIA892 | - | Jul 10, 05:20 UTC | Jul 10, 05:40 UTC | 20m |
| 2026-07-10 | SIA892 | - | Jul 10, 02:15 UTC | Jul 10, 02:40 UTC | 25m |
| 2026-07-09 | SIA317 | - | Jul 9, 10:55 UTC | Jul 9, 23:10 UTC | 12h 15m |
| 2026-07-08 | SIA322 | - | Jul 8, 15:35 UTC | Jul 9, 04:35 UTC | 13h 0m |
| 2026-07-08 | SIA893 | - | Jul 8, 11:25 UTC | Jul 8, 11:45 UTC | 20m |
| 2026-07-08 | SIA893 | - | Jul 8, 08:35 UTC | Jul 8, 08:50 UTC | 15m |
| 2026-07-08 | SIA892 | - | Jul 8, 05:20 UTC | Jul 8, 05:35 UTC | 15m |
| 2026-07-08 | SIA892 | - | Jul 8, 02:20 UTC | Jul 8, 02:45 UTC | 25m |
| 2026-07-04 | SIA319 | LHR → SIN | Jul 4, 22:55 UTC | Jul 5, 11:10 UTC | 12h 15m |
| 2026-07-04 | SIA308 | - | Jul 4, 01:30 UTC | Jul 4, 14:45 UTC | 13h 15m |
| 2026-07-02 | SIA319 | LHR → SIN | Jul 2, 19:55 UTC | Jul 3, 08:10 UTC | 12h 15m |
| 2026-07-02 | SIA308 | - | Jul 2, 01:40 UTC | Jul 2, 14:50 UTC | 13h 10m |
| 2026-07-01 | SIA423 | BOM → SIN | Jul 1, 22:25 UTC | Jul 1, 23:30 UTC | 1h 5m |
| 2026-07-01 | SIA423 | BOM → SIN | Jul 1, 18:35 UTC | Jul 1, 18:50 UTC | 15m |
| 2026-07-01 | SIA424 | - | Jul 1, 15:25 UTC | Jul 1, 15:55 UTC | 30m |
| 2026-07-01 | SIA424 | - | Jul 1, 11:20 UTC | Jul 1, 11:55 UTC | 35m |
| 2026-06-30 | SIA319 | LHR → SIN | Jun 30, 19:55 UTC | Jul 1, 08:35 UTC | 12h 40m |
| 2026-06-30 | SIA308 | - | Jun 30, 01:25 UTC | Jun 30, 14:30 UTC | 13h 6m |
| 2026-06-29 | SIA893 | - | Jun 29, 10:55 UTC | Jun 29, 11:20 UTC | 25m |
| 2026-06-29 | SIA893 | - | Jun 29, 08:24 UTC | Jun 29, 08:39 UTC | 15m |
| 2026-06-29 | SIA892 | - | Jun 29, 05:34 UTC | Jun 29, 05:59 UTC | 25m |
| 2026-06-29 | SIA892 | - | Jun 29, 02:35 UTC | Jun 29, 02:54 UTC | 20m |
| 2026-06-28 | SIA317 | LHR → SIN | Jun 28, 10:55 UTC | Jun 28, 22:59 UTC | 12h 5m |
| 2026-06-27 | SIA322 | SIN → LHR | Jun 27, 15:34 UTC | Jun 28, 04:35 UTC | 13h 0m |
| 2026-06-27 | SIA893 | - | Jun 27, 10:45 UTC | Jun 27, 11:14 UTC | 30m |
| 2026-06-27 | SIA893 | - | Jun 27, 08:20 UTC | Jun 27, 08:29 UTC | 10m |
| 2026-06-27 | SIA892 | - | Jun 27, 05:35 UTC | Jun 27, 05:55 UTC | 20m |
| 2026-06-27 | SIA892 | - | Jun 27, 02:29 UTC | Jun 27, 02:50 UTC | 20m |
| 2026-06-26 | SIA423 | BOM → SIN | Jun 26, 19:35 UTC | Jun 26, 23:34 UTC | 4h 0m |
| 2026-06-26 | SIA424 | - | Jun 26, 15:45 UTC | Jun 26, 16:00 UTC | 15m |
| 2026-06-26 | SIA424 | - | Jun 26, 11:34 UTC | Jun 26, 14:59 UTC | 3h 25m |
| 2026-06-25 | SIA325 | FRA → SIN | Jun 25, 20:09 UTC | Jun 26, 07:39 UTC | 11h 30m |
| 2026-06-25 | SIA326 | - | Jun 25, 05:44 UTC | Jun 25, 17:54 UTC | 12h 10m |
| 2026-06-24 | SIA830 | - | Jun 24, 02:45 UTC | Jun 24, 14:55 UTC | 12h 10m |
| 2026-06-23 | SIA423 | BOM → SIN | Jun 23, 20:29 UTC | Jun 24, 00:25 UTC | 3h 55m |
| 2026-06-23 | SIA424 | - | Jun 23, 15:50 UTC | Jun 23, 16:05 UTC | 15m |
| 2026-06-23 | SIA424 | - | Jun 23, 11:24 UTC | Jun 23, 14:55 UTC | 3h 30m |
| 2026-06-22 | SIA325 | FRA → SIN | Jun 22, 20:04 UTC | Jun 23, 07:29 UTC | 11h 25m |
| 2026-06-22 | SIA326 | - | Jun 22, 05:20 UTC | Jun 22, 17:40 UTC | 12h 20m |
| 2026-06-21 | SIA893 | - | Jun 21, 10:54 UTC | Jun 21, 11:55 UTC | 1h 0m |
| 2026-06-21 | SIA893 | - | Jun 21, 08:15 UTC | Jun 21, 08:30 UTC | 15m |
| 2026-06-21 | SIA892 | - | Jun 21, 05:20 UTC | Jun 21, 05:44 UTC | 25m |
| 2026-06-21 | SIA892 | - | Jun 21, 02:20 UTC | Jun 21, 02:45 UTC | 25m |
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 9V-SKQ page for operator, model, and routing details .