sensors Mode-S transponder
A0BA47
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N146PH · AGUSTA AW-139 · operated by PHI AVIATION LLC
- Hex
- A0BA47
- Octal
- 50135107
- Decimal
- 10,533,447
- Country
- US
- Tail
- N146PH
- Type
- A139
- Flights observed
- 53
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 20, 12:25 UTC
Last known position
Country allocation
The ICAO 24-bit address A0BA47 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 |
|---|---|---|---|
| PHM054 | - | 52 | 2026-07-20 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-20 | PHM054 | - | Jul 20, 12:00 UTC | Jul 20, 12:25 UTC | 25m |
| 2026-07-16 | PHM054 | - | Jul 16, 11:50 UTC | Jul 16, 12:14 UTC | 25m |
| 2026-07-14 | PHM054 | - | Jul 14, 01:25 UTC | Jul 14, 01:50 UTC | 25m |
| 2026-07-13 | PHM054 | - | Jul 13, 17:35 UTC | Jul 13, 17:45 UTC | 10m |
| 2026-07-10 | PHM054 | - | Jul 10, 11:55 UTC | Jul 10, 12:20 UTC | 25m |
| 2026-07-09 | PHM054 | - | Jul 9, 18:30 UTC | Jul 9, 18:45 UTC | 15m |
| 2026-07-09 | - | - | Jul 9, 11:15 UTC | Jul 9, 11:30 UTC | 15m |
| 2026-07-03 | PHM054 | - | Jul 3, 12:00 UTC | Jul 3, 12:10 UTC | 10m |
| 2026-07-01 | PHM054 | - | Jul 1, 12:10 UTC | Jul 1, 12:25 UTC | 15m |
| 2026-06-26 | PHM054 | - | Jun 26, 12:05 UTC | Jun 26, 12:34 UTC | 30m |
| 2026-06-23 | PHM054 | - | Jun 23, 11:59 UTC | Jun 23, 12:25 UTC | 25m |
| 2026-06-22 | PHM054 | - | Jun 22, 15:40 UTC | Jun 22, 16:10 UTC | 30m |
| 2026-06-22 | PHM054 | - | Jun 22, 12:10 UTC | Jun 22, 12:40 UTC | 30m |
| 2026-06-19 | PHM054 | - | Jun 19, 11:59 UTC | Jun 19, 12:34 UTC | 35m |
| 2026-06-17 | PHM054 | - | Jun 17, 15:25 UTC | Jun 17, 15:35 UTC | 10m |
| 2026-06-17 | PHM054 | - | Jun 17, 12:25 UTC | Jun 17, 12:55 UTC | 30m |
| 2026-06-16 | PHM054 | - | Jun 16, 11:55 UTC | Jun 16, 12:25 UTC | 30m |
| 2026-06-15 | PHM054 | - | Jun 15, 12:00 UTC | Jun 15, 12:25 UTC | 25m |
| 2026-06-12 | PHM054 | - | Jun 12, 17:25 UTC | Jun 12, 17:45 UTC | 20m |
| 2026-06-12 | PHM054 | - | Jun 12, 11:55 UTC | Jun 12, 12:25 UTC | 30m |
| 2026-06-10 | PHM054 | - | Jun 10, 16:10 UTC | Jun 10, 16:40 UTC | 30m |
| 2026-06-10 | PHM054 | - | Jun 10, 12:00 UTC | Jun 10, 12:30 UTC | 30m |
| 2026-06-08 | PHM054 | - | Jun 8, 16:30 UTC | Jun 8, 17:00 UTC | 30m |
| 2026-06-08 | PHM054 | - | Jun 8, 13:00 UTC | Jun 8, 13:25 UTC | 25m |
| 2026-05-27 | PHM054 | - | May 27, 15:40 UTC | May 27, 16:00 UTC | 20m |
| 2026-05-20 | PHM054 | - | May 20, 15:35 UTC | May 20, 16:00 UTC | 25m |
| 2026-05-20 | PHM054 | - | May 20, 12:00 UTC | May 20, 12:30 UTC | 30m |
| 2026-05-18 | PHM054 | - | May 18, 12:30 UTC | May 18, 12:55 UTC | 25m |
| 2026-05-15 | PHM054 | - | May 15, 12:20 UTC | May 15, 12:50 UTC | 30m |
| 2026-05-14 | PHM054 | - | May 14, 11:55 UTC | May 14, 12:20 UTC | 25m |
| 2026-05-13 | PHM054 | - | May 13, 15:25 UTC | May 13, 15:40 UTC | 15m |
| 2026-05-13 | PHM054 | - | May 13, 12:00 UTC | May 13, 12:15 UTC | 15m |
| 2026-05-06 | PHM054 | - | May 6, 15:55 UTC | May 6, 16:15 UTC | 20m |
| 2026-05-06 | PHM054 | - | May 6, 12:10 UTC | May 6, 12:30 UTC | 20m |
| 2026-05-05 | PHM054 | - | May 5, 11:50 UTC | May 5, 12:15 UTC | 25m |
| 2026-05-04 | PHM054 | - | May 4, 15:45 UTC | May 4, 16:05 UTC | 20m |
| 2026-05-04 | PHM054 | - | May 4, 11:55 UTC | May 4, 12:20 UTC | 25m |
| 2026-04-29 | PHM054 | - | Apr 29, 12:15 UTC | Apr 29, 12:40 UTC | 25m |
| 2026-04-28 | PHM054 | - | Apr 28, 12:05 UTC | Apr 28, 12:30 UTC | 25m |
| 2026-04-27 | PHM054 | - | Apr 27, 12:20 UTC | Apr 27, 12:50 UTC | 30m |
| 2026-04-24 | PHM054 | - | Apr 24, 15:45 UTC | Apr 24, 16:05 UTC | 20m |
| 2026-04-24 | PHM054 | - | Apr 24, 12:10 UTC | Apr 24, 12:30 UTC | 20m |
| 2026-04-22 | PHM054 | - | Apr 22, 15:50 UTC | Apr 22, 16:15 UTC | 25m |
| 2026-04-22 | PHM054 | - | Apr 22, 12:10 UTC | Apr 22, 12:35 UTC | 25m |
| 2026-04-21 | PHM054 | - | Apr 21, 13:50 UTC | Apr 21, 14:20 UTC | 30m |
| 2026-04-20 | PHM054 | - | Apr 20, 15:55 UTC | Apr 20, 16:25 UTC | 30m |
| 2026-04-20 | PHM054 | - | Apr 20, 12:00 UTC | Apr 20, 12:30 UTC | 30m |
| 2026-04-18 | PHM054 | - | Apr 18, 12:40 UTC | Apr 18, 13:00 UTC | 20m |
| 2026-04-17 | PHM054 | - | Apr 17, 11:55 UTC | Apr 17, 12:25 UTC | 30m |
| 2026-04-15 | PHM054 | - | Apr 15, 12:01 UTC | Apr 15, 12:30 UTC | 30m |
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 N146PH page for operator, model, and routing details .