sensors Mode-S transponder
511167
ICAO 24-bit transponder address · allocated to Estonia
Currently assigned to ES-SKI · PILATUS PC-12
- Hex
- 511167
- Octal
- 24210547
- Decimal
- 5,312,871
- Country
- EE
- Tail
- ES-SKI
- Type
- PC12
- Flights observed
- 30
- Distinct callsigns
- 3
- Country
- EE
- Last broadcast
- 50m ago
Current position
Country allocation
The ICAO 24-bit address 511167 falls within the block assigned to Estonia (EE) by ICAO Annex 10, Volume III. Every aircraft registered in Estonia 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 3 distinct
Recent flights last 30
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | ESSKI | - | May 30, 11:30 UTC | May 30, 11:45 UTC | 15m |
| 2026-05-28 | ESSKI | TLL → VIE | May 28, 09:20 UTC | May 28, 12:20 UTC | 3h 0m |
| 2026-05-26 | DMS811 | VNO → TLL | May 26, 14:35 UTC | May 26, 16:15 UTC | 1h 40m |
| 2026-05-26 | DMS811 | TLL → VNO | May 26, 09:19 UTC | May 26, 10:29 UTC | 1h 10m |
| 2026-05-25 | ESSKI | - | May 25, 11:20 UTC | May 25, 11:50 UTC | 30m |
| 2026-05-25 | DMS811 | - | May 25, 09:25 UTC | May 25, 10:40 UTC | 1h 15m |
| 2026-05-25 | DMS811 | - | May 25, 07:30 UTC | May 25, 08:25 UTC | 55m |
| 2026-05-25 | ESSKI | - | May 25, 06:30 UTC | May 25, 06:50 UTC | 20m |
| 2026-05-12 | ESSKI | - | May 12, 14:55 UTC | May 12, 19:10 UTC | 4h 15m |
| 2026-05-10 | ESSKI | - | May 10, 11:20 UTC | May 10, 15:49 UTC | 4h 30m |
| 2026-05-04 | ESSKI | - | May 4, 11:40 UTC | May 4, 16:15 UTC | 4h 35m |
| 2026-05-04 | ESSKI | - | May 4, 10:00 UTC | May 4, 10:20 UTC | 20m |
| 2026-04-30 | ESSKI | - | Apr 30, 19:20 UTC | Apr 30, 19:45 UTC | 25m |
| 2026-04-30 | ESSKI | - | Apr 30, 15:55 UTC | Apr 30, 17:35 UTC | 1h 40m |
| 2026-04-30 | ESSKI | - | Apr 30, 07:55 UTC | Apr 30, 10:35 UTC | 2h 40m |
| 2026-04-25 | DMS811 | - | Apr 25, 10:05 UTC | Apr 25, 10:25 UTC | 20m |
| 2026-04-25 | DMS811 | TLL → HEL | Apr 25, 09:10 UTC | Apr 25, 09:30 UTC | 20m |
| 2026-04-24 | ESSKI | HAJ → TLL | Apr 24, 13:50 UTC | Apr 24, 16:25 UTC | 2h 35m |
| 2026-04-24 | ESSKI | TLL → HAJ | Apr 24, 05:15 UTC | Apr 24, 07:55 UTC | 2h 40m |
| 2026-04-23 | DMS822 | PLQ → TLL | Apr 23, 12:40 UTC | Apr 23, 14:00 UTC | 1h 20m |
| 2026-04-22 | DMS822 | TLL → PLQ | Apr 22, 05:20 UTC | Apr 22, 06:20 UTC | 1h 0m |
| 2026-04-16 | ESSKI | - | Apr 16, 19:15 UTC | Apr 16, 19:55 UTC | 40m |
| 2026-04-16 | ESSKI | - | Apr 16, 18:40 UTC | Apr 16, 19:10 UTC | 30m |
| 2026-04-15 | ESSKI | - | Apr 15, 16:20 UTC | Apr 15, 16:35 UTC | 15m |
| 2026-04-15 | ESSKI | - | Apr 15, 15:05 UTC | Apr 15, 15:50 UTC | 45m |
| 2026-04-15 | ESSKI | - | Apr 15, 13:01 UTC | Apr 15, 14:55 UTC | 1h 54m |
| 2026-04-15 | ESSKI | - | Apr 15, 12:40 UTC | Apr 15, 12:55 UTC | 15m |
| 2026-04-14 | ESSKI | - | Apr 14, 10:50 UTC | Apr 14, 12:40 UTC | 1h 50m |
| 2026-04-14 | ESSKI | - | Apr 14, 09:10 UTC | Apr 14, 11:05 UTC | 1h 55m |
| 2026-04-14 | ESSKI | - | Apr 14, 07:55 UTC | Apr 14, 08:40 UTC | 45m |
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 ES-SKI page for operator, model, and routing details .