sensors Mode-S transponder
440A8D
ICAO 24-bit transponder address · allocated to Austria
Currently assigned to OE-IFK · BOEING 747-400
- Hex
- 440A8D
- Octal
- 21005215
- Decimal
- 4,459,149
- Country
- AT
- Tail
- OE-IFK
- Type
- B744
- Flights observed
- 94
- Distinct callsigns
- 12
- Country
- AT
- Last broadcast
- 23m ago
Current position
Country allocation
The ICAO 24-bit address 440A8D falls within the block assigned to Austria (AT) by ICAO Annex 10, Volume III. Every aircraft registered in Austria 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 12 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| TAY401 | ASL Airlines Belgium | 28 | 2026-05-27 |
| TAY400 | ASL Airlines Belgium | 22 | 2026-05-27 |
| TAY802 | ASL Airlines Belgium | 11 | 2026-05-21 |
| TAY801 | ASL Airlines Belgium | 8 | 2026-05-20 |
| TAY1842 | ASL Airlines Belgium | 6 | 2026-05-23 |
| TAY952 | ASL Airlines Belgium | 4 | 2026-05-05 |
| TAY951 | - | 4 | 2026-05-05 |
| TAY1841 | ASL Airlines Belgium | 4 | 2026-05-29 |
| TAY400D | ASL Airlines Belgium | 3 | 2026-04-13 |
| TAY917E | ASL Airlines Belgium | 2 | 2026-05-29 |
| TAY827 | - | 1 | 2026-05-08 |
| TAY826 | ASL Airlines Belgium | 1 | 2026-05-07 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | TAY1841 | LEJ → MIA | May 29, 23:35 UTC | May 30, 01:15 UTC | 1h 40m |
| 2026-05-29 | TAY917E | HHN → LGG | May 29, 21:15 UTC | May 29, 21:35 UTC | 20m |
| 2026-05-28 | TAY917E | HHN → LGG | May 28, 00:25 UTC | May 28, 00:45 UTC | 20m |
| 2026-05-27 | TAY400 | ALA → LGG | May 27, 15:35 UTC | May 27, 19:55 UTC | 4h 20m |
| 2026-05-27 | TAY400 | ALA → LGG | May 27, 04:49 UTC | May 27, 05:04 UTC | 15m |
| 2026-05-27 | TAY401 | LGG → DWC | May 27, 01:54 UTC | May 27, 02:24 UTC | 30m |
| 2026-05-26 | TAY401 | LGG → DWC | May 26, 09:35 UTC | May 26, 23:29 UTC | 13h 55m |
| 2026-05-26 | TAY400 | ALA → LGG | May 26, 00:14 UTC | May 26, 04:30 UTC | 4h 15m |
| 2026-05-25 | TAY400 | ALA → LGG | May 25, 13:45 UTC | May 25, 14:00 UTC | 15m |
| 2026-05-25 | TAY401 | LGG → DWC | May 25, 10:05 UTC | May 25, 10:30 UTC | 25m |
| 2026-05-24 | TAY401 | LGG → DWC | May 24, 23:00 UTC | May 24, 23:46 UTC | 46m |
| 2026-05-24 | TAY400 | ALA → LGG | May 24, 17:45 UTC | May 24, 19:25 UTC | 1h 40m |
| 2026-05-24 | TAY400 | ALA → LGG | May 24, 04:15 UTC | May 24, 04:30 UTC | 15m |
| 2026-05-24 | TAY401 | LGG → DWC | May 24, 01:15 UTC | May 24, 01:50 UTC | 35m |
| 2026-05-23 | TAY401 | LGG → DWC | May 23, 09:20 UTC | May 23, 23:20 UTC | 14h 1m |
| 2026-05-23 | TAY1842 | ALA → LGG | May 23, 03:55 UTC | May 23, 05:50 UTC | 1h 55m |
| 2026-05-21 | TAY1841 | LEJ → MIA | May 21, 21:45 UTC | May 22, 04:45 UTC | 7h 0m |
| 2026-05-21 | TAY802 | PVG → LGG | May 21, 01:35 UTC | May 21, 15:10 UTC | 13h 35m |
| 2026-05-20 | TAY802 | PVG → LGG | May 20, 18:55 UTC | May 21, 15:10 UTC | 20h 15m |
| 2026-05-20 | TAY801 | LGG → PVG | May 20, 11:20 UTC | May 21, 11:15 UTC | 23h 55m |
| 2026-05-20 | TAY801 | LGG → PVG | May 20, 09:05 UTC | May 21, 01:55 UTC | 16h 50m |
| 2026-05-17 | TAY802 | PVG → LGG | May 17, 12:55 UTC | May 18, 02:35 UTC | 13h 40m |
| 2026-05-16 | TAY801 | LGG → PVG | May 16, 19:00 UTC | May 17, 13:05 UTC | 18h 5m |
| 2026-05-15 | TAY400 | ALA → LGG | May 15, 23:20 UTC | May 16, 14:16 UTC | 14h 56m |
| 2026-05-15 | TAY401 | LGG → DWC | May 15, 17:50 UTC | May 15, 18:15 UTC | 25m |
| 2026-05-15 | TAY401 | LGG → DWC | May 15, 14:55 UTC | May 15, 15:55 UTC | 1h 0m |
| 2026-05-14 | TAY401 | LGG → DWC | May 14, 16:15 UTC | May 15, 15:15 UTC | 22h 59m |
| 2026-05-14 | TAY401 | LGG → DWC | May 14, 10:35 UTC | May 14, 16:35 UTC | 6h 0m |
| 2026-05-12 | TAY802 | PVG → LGG | May 12, 18:00 UTC | May 12, 23:15 UTC | 5h 15m |
| 2026-05-11 | TAY801 | LGG → PVG | May 11, 09:25 UTC | May 11, 13:30 UTC | 4h 5m |
| 2026-05-09 | TAY802 | PVG → LGG | May 9, 09:20 UTC | May 9, 22:45 UTC | 13h 25m |
| 2026-05-09 | TAY802 | PVG → LGG | May 9, 02:05 UTC | May 9, 22:45 UTC | 20h 40m |
| 2026-05-08 | TAY801 | LGG → PVG | May 8, 16:15 UTC | May 9, 09:35 UTC | 17h 20m |
| 2026-05-08 | TAY827 | - | May 8, 08:19 UTC | May 8, 09:30 UTC | 1h 10m |
| 2026-05-07 | TAY826 | LGG → LGG | May 7, 06:00 UTC | May 7, 08:30 UTC | 2h 30m |
| 2026-05-05 | TAY952 | HKG → HKG | May 5, 23:10 UTC | May 6, 11:10 UTC | 12h 0m |
| 2026-05-05 | TAY951 | - | May 5, 07:30 UTC | May 5, 19:05 UTC | 11h 35m |
| 2026-05-04 | TAY952 | HKG → HKG | May 4, 20:35 UTC | May 5, 00:50 UTC | 4h 15m |
| 2026-05-04 | TAY952 | HKG → HKG | May 4, 09:10 UTC | May 4, 09:25 UTC | 15m |
| 2026-05-04 | TAY951 | - | May 4, 05:05 UTC | May 4, 05:35 UTC | 30m |
| 2026-05-03 | TAY951 | - | May 3, 17:54 UTC | May 3, 20:25 UTC | 2h 30m |
| 2026-05-02 | TAY952 | HKG → HKG | May 2, 23:15 UTC | May 3, 14:05 UTC | 14h 49m |
| 2026-05-02 | TAY951 | - | May 2, 07:25 UTC | May 2, 19:00 UTC | 11h 35m |
| 2026-05-01 | TAY400 | ALA → LGG | May 1, 16:15 UTC | May 1, 20:35 UTC | 4h 20m |
| 2026-05-01 | TAY400 | ALA → LGG | May 1, 05:00 UTC | May 1, 05:20 UTC | 20m |
| 2026-04-30 | TAY401 | LGG → DWC | Apr 30, 08:35 UTC | May 1, 01:05 UTC | 16h 30m |
| 2026-04-29 | TAY400 | ALA → LGG | Apr 29, 20:35 UTC | Apr 30, 01:15 UTC | 4h 39m |
| 2026-04-29 | TAY400 | ALA → LGG | Apr 29, 09:30 UTC | Apr 29, 09:45 UTC | 15m |
| 2026-04-29 | TAY401 | LGG → DWC | Apr 29, 04:20 UTC | Apr 29, 05:05 UTC | 45m |
| 2026-04-28 | TAY401 | LGG → DWC | Apr 28, 12:10 UTC | Apr 29, 02:09 UTC | 14h 0m |
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 OE-IFK page for operator, model, and routing details .