sensors Mode-S transponder
A2444D
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N245TT · GULFSTREAM 5 · operated by WOTAN AMERICA INC
- Hex
- A2444D
- Octal
- 50442115
- Decimal
- 10,634,317
- Country
- US
- Tail
- N245TT
- Type
- GLF5
- Flights observed
- 34
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- 10h ago
Last known position
Country allocation
The ICAO 24-bit address A2444D falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States 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 1 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| N245TT | - | 34 | 2026-07-25 |
Recent flights last 34
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-25 | N245TT | - | Jul 25, 14:30 UTC | Jul 25, 16:50 UTC | 2h 20m |
| 2026-07-23 | N245TT | - | Jul 23, 19:45 UTC | Jul 23, 22:10 UTC | 2h 25m |
| 2026-07-19 | N245TT | - | Jul 19, 15:15 UTC | Jul 19, 15:45 UTC | 30m |
| 2026-07-19 | N245TT | - | Jul 19, 07:00 UTC | Jul 19, 08:15 UTC | 1h 15m |
| 2026-07-17 | N245TT | - | Jul 17, 12:15 UTC | Jul 17, 20:20 UTC | 8h 5m |
| 2026-07-15 | N245TT | - | Jul 15, 16:00 UTC | Jul 15, 17:20 UTC | 1h 20m |
| 2026-07-14 | N245TT | - | Jul 14, 22:50 UTC | Jul 15, 00:30 UTC | 1h 40m |
| 2026-07-14 | N245TT | - | Jul 14, 14:10 UTC | Jul 14, 16:35 UTC | 2h 25m |
| 2026-07-13 | N245TT | - | Jul 13, 23:25 UTC | Jul 14, 01:40 UTC | 2h 15m |
| 2026-07-12 | N245TT | - | Jul 12, 06:35 UTC | Jul 12, 07:35 UTC | 1h 0m |
| 2026-07-12 | N245TT | - | Jul 12, 03:10 UTC | Jul 12, 06:01 UTC | 2h 50m |
| 2026-07-07 | N245TT | - | Jul 7, 12:15 UTC | Jul 7, 16:20 UTC | 4h 5m |
| 2026-07-05 | N245TT | - | Jul 5, 18:30 UTC | Jul 5, 18:55 UTC | 25m |
| 2026-07-05 | N245TT | - | Jul 5, 14:50 UTC | Jul 5, 15:20 UTC | 30m |
| 2026-07-01 | N245TT | - | Jul 1, 22:45 UTC | Jul 2, 01:05 UTC | 2h 20m |
| 2026-06-13 | N245TT | - | Jun 13, 02:00 UTC | Jun 13, 04:35 UTC | 2h 34m |
| 2026-06-12 | N245TT | - | Jun 12, 21:00 UTC | Jun 13, 01:00 UTC | 4h 0m |
| 2026-06-10 | N245TT | - | Jun 10, 16:15 UTC | Jun 10, 20:30 UTC | 4h 15m |
| 2026-06-09 | N245TT | - | Jun 9, 21:35 UTC | Jun 10, 00:05 UTC | 2h 30m |
| 2026-05-17 | N245TT | - | May 17, 02:40 UTC | May 17, 04:35 UTC | 1h 55m |
| 2026-05-15 | N245TT | - | May 15, 23:40 UTC | May 16, 01:45 UTC | 2h 5m |
| 2026-05-15 | N245TT | - | May 15, 23:10 UTC | May 15, 23:35 UTC | 25m |
| 2026-05-15 | N245TT | - | May 15, 21:30 UTC | May 15, 22:00 UTC | 30m |
| 2026-05-15 | N245TT | - | May 15, 19:25 UTC | May 15, 20:20 UTC | 55m |
| 2026-05-15 | N245TT | - | May 15, 15:40 UTC | May 15, 18:00 UTC | 2h 20m |
| 2026-05-13 | N245TT | - | May 13, 15:25 UTC | May 13, 15:40 UTC | 15m |
| 2026-05-07 | N245TT | PPM → PBI | May 7, 16:20 UTC | May 7, 16:35 UTC | 15m |
| 2026-04-30 | N245TT | TEB → FLL | Apr 30, 00:40 UTC | Apr 30, 03:00 UTC | 2h 20m |
| 2026-04-29 | N245TT | - | Apr 29, 23:05 UTC | Apr 29, 23:50 UTC | 45m |
| 2026-04-25 | N245TT | - | Apr 25, 19:00 UTC | Apr 25, 19:15 UTC | 15m |
| 2026-04-25 | N245TT | - | Apr 25, 15:30 UTC | Apr 25, 18:05 UTC | 2h 35m |
| 2026-04-13 | N245TT | - | Apr 13, 00:20 UTC | Apr 13, 01:20 UTC | 1h 0m |
| 2026-04-12 | N245TT | - | Apr 12, 23:55 UTC | Apr 13, 01:20 UTC | 1h 25m |
| 2026-04-12 | N245TT | - | Apr 12, 19:20 UTC | Apr 12, 20:15 UTC | 55m |
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 N245TT page for operator, model, and routing details .