sensors Mode-S transponder
A56ABF
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N4480T · PIPER PA-28R-180/200/201 · operated by HAVRILESKO CHRISTOPHER E
- Hex
- A56ABF
- Octal
- 51265277
- Decimal
- 10,840,767
- Country
- US
- Tail
- N4480T
- Type
- P28R
- Flights observed
- 37
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 14, 15:15 UTC
Last known position
Country allocation
The ICAO 24-bit address A56ABF 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 |
|---|---|---|---|
| N4480T | - | 37 | 2026-07-14 |
Recent flights last 37
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-14 | N4480T | - | Jul 14, 14:55 UTC | Jul 14, 15:15 UTC | 20m |
| 2026-07-14 | N4480T | - | Jul 14, 14:20 UTC | Jul 14, 14:50 UTC | 30m |
| 2026-07-14 | N4480T | - | Jul 14, 12:05 UTC | Jul 14, 12:55 UTC | 50m |
| 2026-07-13 | N4480T | - | Jul 13, 17:05 UTC | Jul 13, 19:15 UTC | 2h 10m |
| 2026-07-12 | N4480T | - | Jul 12, 23:15 UTC | Jul 13, 02:55 UTC | 3h 40m |
| 2026-07-09 | N4480T | - | Jul 9, 23:00 UTC | Jul 10, 00:45 UTC | 1h 45m |
| 2026-07-02 | N4480T | - | Jul 2, 15:15 UTC | Jul 2, 17:40 UTC | 2h 25m |
| 2026-07-02 | N4480T | - | Jul 2, 13:50 UTC | Jul 2, 14:25 UTC | 35m |
| 2026-07-01 | N4480T | - | Jul 1, 18:00 UTC | Jul 1, 18:45 UTC | 45m |
| 2026-07-01 | N4480T | - | Jul 1, 16:35 UTC | Jul 1, 17:25 UTC | 50m |
| 2026-06-29 | N4480T | - | Jun 29, 16:59 UTC | Jun 29, 17:49 UTC | 50m |
| 2026-06-25 | N4480T | - | Jun 25, 22:04 UTC | Jun 25, 22:54 UTC | 50m |
| 2026-06-24 | N4480T | - | Jun 24, 15:14 UTC | Jun 24, 15:49 UTC | 35m |
| 2026-06-24 | N4480T | - | Jun 24, 12:40 UTC | Jun 24, 13:20 UTC | 40m |
| 2026-06-23 | N4480T | - | Jun 23, 19:00 UTC | Jun 23, 19:24 UTC | 25m |
| 2026-06-19 | N4480T | - | Jun 19, 13:39 UTC | Jun 19, 13:54 UTC | 15m |
| 2026-06-15 | N4480T | - | Jun 15, 12:19 UTC | Jun 15, 13:20 UTC | 1h 0m |
| 2026-05-31 | N4480T | - | May 31, 00:40 UTC | May 31, 00:55 UTC | 15m |
| 2026-05-30 | N4480T | - | May 30, 21:25 UTC | May 30, 21:45 UTC | 20m |
| 2026-05-25 | N4480T | - | May 25, 16:15 UTC | May 25, 17:35 UTC | 1h 20m |
| 2026-05-25 | N4480T | - | May 25, 14:00 UTC | May 25, 15:20 UTC | 1h 20m |
| 2026-05-20 | N4480T | - | May 20, 00:10 UTC | May 20, 00:30 UTC | 20m |
| 2026-05-08 | N4480T | - | May 8, 00:29 UTC | May 8, 01:49 UTC | 1h 20m |
| 2026-04-30 | N4480T | - | Apr 30, 19:45 UTC | Apr 30, 20:40 UTC | 55m |
| 2026-04-26 | N4480T | - | Apr 26, 23:25 UTC | Apr 27, 00:10 UTC | 45m |
| 2026-04-25 | N4480T | - | Apr 25, 18:10 UTC | Apr 25, 19:00 UTC | 50m |
| 2026-04-25 | N4480T | - | Apr 25, 16:30 UTC | Apr 25, 16:40 UTC | 10m |
| 2026-04-18 | N4480T | - | Apr 18, 17:20 UTC | Apr 18, 17:40 UTC | 20m |
| 2026-04-18 | N4480T | - | Apr 18, 01:25 UTC | Apr 18, 02:15 UTC | 50m |
| 2026-04-18 | N4480T | - | Apr 18, 00:25 UTC | Apr 18, 01:20 UTC | 55m |
| 2026-04-17 | N4480T | - | Apr 17, 23:25 UTC | Apr 17, 23:50 UTC | 25m |
| 2026-04-17 | N4480T | - | Apr 17, 22:10 UTC | Apr 17, 23:20 UTC | 1h 10m |
| 2026-04-17 | N4480T | - | Apr 17, 17:25 UTC | Apr 17, 18:10 UTC | 45m |
| 2026-04-17 | N4480T | - | Apr 17, 16:40 UTC | Apr 17, 17:15 UTC | 35m |
| 2026-04-17 | N4480T | - | Apr 17, 13:20 UTC | Apr 17, 14:10 UTC | 50m |
| 2026-04-17 | N4480T | - | Apr 17, 12:40 UTC | Apr 17, 13:15 UTC | 35m |
| 2026-04-13 | N4480T | - | Apr 13, 19:50 UTC | Apr 13, 20:30 UTC | 40m |
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 N4480T page for operator, model, and routing details .