sensors Mode-S transponder
76CDB1
ICAO 24-bit transponder address · allocated to Singapore
Currently assigned to 9V-SMQ · AIRBUS A-350-900
- Hex
- 76CDB1
- Octal
- 35546661
- Decimal
- 7,785,905
- Country
- SG
- Tail
- 9V-SMQ
- Type
- A359
- Flights observed
- 136
- Distinct callsigns
- 20
- Country
- SG
- Last broadcast
- 1h ago
Current position
Country allocation
The ICAO 24-bit address 76CDB1 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| SIA391 | Singapore Airlines | 7 | 2026-05-24 |
| SIA312 | Singapore Airlines | 7 | 2026-05-12 |
| SIA309 | Singapore Airlines | 7 | 2026-05-13 |
| SIA392 | Singapore Airlines | 6 | 2026-05-24 |
| SIA388 | Singapore Airlines | 6 | 2026-04-17 |
| SIA242 | Singapore Airlines | 6 | 2026-05-27 |
| SIA387 | Singapore Airlines | 5 | 2026-04-17 |
| SIA327 | - | 5 | 2026-04-13 |
| SIA962 | Singapore Airlines | 4 | 2026-05-08 |
| SIA328 | Singapore Airlines | 4 | 2026-04-13 |
| SIA241 | Singapore Airlines | 4 | 2026-05-27 |
| SIA956 | Singapore Airlines | 3 | 2026-05-08 |
| SIA432 | Singapore Airlines | 3 | 2026-05-25 |
| SIA324 | Singapore Airlines | 3 | 2026-05-25 |
| SIA314 | Singapore Airlines | 3 | 2026-05-29 |
| SIA208 | Singapore Airlines | 3 | 2026-05-14 |
| SIA126 | Singapore Airlines | 3 | 2026-05-16 |
| SIA125 | Singapore Airlines | 3 | 2026-05-16 |
| SIA963 | Singapore Airlines | 2 | 2026-05-08 |
| SIA957 | Singapore Airlines | 2 | 2026-05-08 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | SIA314 | SIN → LHR | May 29, 18:50 UTC | May 30, 04:15 UTC | 9h 25m |
| 2026-05-29 | SIA431 | MLE → SIN | May 29, 02:50 UTC | May 29, 12:35 UTC | 9h 45m |
| 2026-05-28 | SIA313 | LHR → SIN | May 28, 11:35 UTC | May 28, 23:25 UTC | 11h 50m |
| 2026-05-27 | SIA314 | SIN → LHR | May 27, 18:55 UTC | May 28, 08:40 UTC | 13h 45m |
| 2026-05-27 | SIA242 | SYD → SIN | May 27, 08:50 UTC | May 27, 09:25 UTC | 35m |
| 2026-05-27 | SIA241 | SIN → SYD | May 27, 06:15 UTC | May 27, 07:00 UTC | 46m |
| 2026-05-26 | SIA323 | AMS → SIN | May 26, 08:39 UTC | May 26, 20:45 UTC | 12h 5m |
| 2026-05-25 | SIA324 | SIN → AMS | May 25, 20:50 UTC | May 26, 05:30 UTC | 8h 40m |
| 2026-05-25 | SIA324 | SIN → AMS | May 25, 16:35 UTC | May 25, 16:50 UTC | 15m |
| 2026-05-25 | SIA432 | SIN → MLE | May 25, 02:35 UTC | May 25, 12:35 UTC | 10h 0m |
| 2026-05-24 | SIA391 | IST → SIN | May 24, 11:10 UTC | May 24, 20:10 UTC | 9h 0m |
| 2026-05-24 | SIA392 | SIN → IST | May 24, 04:50 UTC | May 24, 05:05 UTC | 15m |
| 2026-05-23 | SIA392 | SIN → IST | May 23, 18:30 UTC | May 24, 04:10 UTC | 9h 40m |
| 2026-05-23 | SIA242 | SYD → SIN | May 23, 16:15 UTC | May 23, 16:25 UTC | 10m |
| 2026-05-23 | SIA242 | SYD → SIN | May 23, 08:30 UTC | May 23, 09:05 UTC | 35m |
| 2026-05-23 | SIA241 | SIN → SYD | May 23, 05:40 UTC | May 23, 06:30 UTC | 50m |
| 2026-05-22 | SIA391 | IST → SIN | May 22, 11:15 UTC | May 22, 20:25 UTC | 9h 10m |
| 2026-05-22 | SIA392 | SIN → IST | May 22, 04:40 UTC | May 22, 04:55 UTC | 15m |
| 2026-05-21 | SIA392 | SIN → IST | May 21, 18:25 UTC | May 22, 04:05 UTC | 9h 40m |
| 2026-05-20 | SIA337 | CDG → SIN | May 20, 20:45 UTC | May 21, 09:15 UTC | 12h 30m |
| 2026-05-20 | SIA338 | SIN → CDG | May 20, 06:00 UTC | May 20, 18:40 UTC | 12h 40m |
| 2026-05-20 | SIA955 | CGK → SIN | May 20, 03:00 UTC | May 20, 04:10 UTC | 1h 10m |
| 2026-05-20 | SIA952 | SIN → CGK | May 20, 01:05 UTC | May 20, 01:30 UTC | 25m |
| 2026-05-20 | SIA952 | SIN → CGK | May 20, 00:05 UTC | May 20, 00:30 UTC | 25m |
| 2026-05-19 | SIA351 | CPH → SIN | May 19, 10:15 UTC | May 19, 22:15 UTC | 12h 0m |
| 2026-05-18 | SIA352 | SIN → CPH | May 18, 16:45 UTC | May 19, 05:25 UTC | 12h 39m |
| 2026-05-18 | SIA919 | MNL → SIN | May 18, 09:15 UTC | May 18, 10:35 UTC | 1h 20m |
| 2026-05-18 | SIA912 | SIN → MNL | May 18, 05:50 UTC | May 18, 07:15 UTC | 1h 25m |
| 2026-05-17 | SIA377 | MXP → SIN | May 17, 11:45 UTC | May 17, 23:20 UTC | 11h 35m |
| 2026-05-17 | SIA377 | MXP → SIN | May 17, 08:40 UTC | May 17, 09:45 UTC | 1h 5m |
| 2026-05-17 | SIA378 | SIN → BCN | May 17, 05:50 UTC | May 17, 07:05 UTC | 1h 15m |
| 2026-05-16 | SIA378 | SIN → BCN | May 16, 15:50 UTC | May 17, 04:15 UTC | 12h 25m |
| 2026-05-16 | SIA125 | KUL → SIN | May 16, 13:01 UTC | May 16, 13:25 UTC | 25m |
| 2026-05-16 | SIA126 | SIN → KUL | May 16, 10:50 UTC | May 16, 11:35 UTC | 45m |
| 2026-05-16 | SIA875 | HKG → SIN | May 16, 07:51 UTC | May 16, 08:11 UTC | 20m |
| 2026-05-16 | SIA875 | HKG → SIN | May 16, 05:20 UTC | May 16, 05:35 UTC | 15m |
| 2026-05-16 | SIA874 | SIN → HKG | May 16, 03:00 UTC | May 16, 03:15 UTC | 15m |
| 2026-05-15 | SIA874 | SIN → HKG | May 15, 23:55 UTC | May 16, 00:20 UTC | 25m |
| 2026-05-15 | SIA391 | IST → SIN | May 15, 04:20 UTC | May 15, 20:20 UTC | 15h 59m |
| 2026-05-15 | SIA391 | IST → SIN | May 15, 00:25 UTC | May 15, 20:20 UTC | 19h 54m |
| 2026-05-14 | SIA391 | IST → SIN | May 14, 23:15 UTC | May 15, 20:20 UTC | 21h 4m |
| 2026-05-14 | SIA391 | IST → SIN | May 14, 20:20 UTC | May 15, 20:15 UTC | 23h 54m |
| 2026-05-14 | SIA392 | SIN → IST | May 14, 20:10 UTC | May 15, 17:00 UTC | 20h 49m |
| 2026-05-14 | SIA208 | MEL → SIN | May 14, 11:15 UTC | May 14, 12:25 UTC | 1h 10m |
| 2026-05-14 | SIA207 | SIN → MEL | May 14, 02:35 UTC | May 14, 09:35 UTC | 7h 0m |
| 2026-05-13 | SIA309 | LGW → SIN | May 13, 09:20 UTC | May 13, 21:35 UTC | 12h 15m |
| 2026-05-12 | SIA312 | SIN → LGW | May 12, 16:35 UTC | May 13, 06:05 UTC | 13h 30m |
| 2026-05-12 | SIA895 | HKG → SIN | May 12, 13:51 UTC | May 12, 14:10 UTC | 20m |
| 2026-05-12 | SIA895 | HKG → SIN | May 12, 11:15 UTC | May 12, 11:30 UTC | 15m |
| 2026-05-12 | SIA894 | SIN → HKG | May 12, 08:45 UTC | May 12, 09:00 UTC | 15m |
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-SMQ page for operator, model, and routing details .