sensors Mode-S transponder
AC9F5F
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N912PA · PIPER PA-28-140/150/160/180 · operated by BIRD ACQUISITION LLC
- Hex
- AC9F5F
- Octal
- 53117537
- Decimal
- 11,312,991
- Country
- US
- Tail
- N912PA
- Type
- P28A
- Flights observed
- 67
- Distinct callsigns
- 0
- Country
- US
- Last broadcast
- 18h ago
Last known position
Country allocation
The ICAO 24-bit address AC9F5F 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.
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-20 | - | - | Jul 20, 00:10 UTC | Jul 20, 01:30 UTC | 1h 20m |
| 2026-07-19 | - | - | Jul 19, 19:00 UTC | Jul 19, 20:10 UTC | 1h 10m |
| 2026-07-19 | - | - | Jul 19, 15:55 UTC | Jul 19, 16:55 UTC | 1h 0m |
| 2026-07-18 | - | - | Jul 18, 18:30 UTC | Jul 18, 18:40 UTC | 10m |
| 2026-07-17 | - | - | Jul 17, 17:25 UTC | Jul 17, 17:35 UTC | 10m |
| 2026-07-10 | - | - | Jul 10, 14:50 UTC | Jul 10, 16:00 UTC | 1h 10m |
| 2026-07-09 | - | - | Jul 9, 14:05 UTC | Jul 9, 15:10 UTC | 1h 5m |
| 2026-07-08 | - | - | Jul 8, 18:10 UTC | Jul 8, 19:15 UTC | 1h 5m |
| 2026-07-08 | - | - | Jul 8, 14:00 UTC | Jul 8, 15:50 UTC | 1h 50m |
| 2026-07-07 | - | - | Jul 7, 18:25 UTC | Jul 7, 19:35 UTC | 1h 10m |
| 2026-07-07 | - | - | Jul 7, 14:05 UTC | Jul 7, 14:40 UTC | 35m |
| 2026-07-06 | - | - | Jul 6, 14:45 UTC | Jul 6, 16:10 UTC | 1h 25m |
| 2026-07-06 | - | - | Jul 6, 12:40 UTC | Jul 6, 13:50 UTC | 1h 10m |
| 2026-07-05 | - | - | Jul 5, 23:15 UTC | Jul 6, 00:40 UTC | 1h 25m |
| 2026-07-05 | - | - | Jul 5, 19:00 UTC | Jul 5, 21:25 UTC | 2h 25m |
| 2026-07-05 | - | - | Jul 5, 17:15 UTC | Jul 5, 17:50 UTC | 35m |
| 2026-07-01 | - | - | Jul 1, 14:20 UTC | Jul 1, 14:50 UTC | 30m |
| 2026-06-29 | - | - | Jun 29, 21:05 UTC | Jun 29, 21:54 UTC | 50m |
| 2026-06-29 | - | - | Jun 29, 19:15 UTC | Jun 29, 19:35 UTC | 20m |
| 2026-06-29 | - | - | Jun 29, 18:14 UTC | Jun 29, 18:34 UTC | 20m |
| 2026-06-27 | - | - | Jun 27, 19:09 UTC | Jun 27, 20:09 UTC | 1h 0m |
| 2026-06-13 | - | - | Jun 13, 20:10 UTC | Jun 13, 21:35 UTC | 1h 25m |
| 2026-06-11 | - | - | Jun 11, 13:00 UTC | Jun 11, 13:10 UTC | 10m |
| 2026-06-11 | - | - | Jun 11, 00:10 UTC | Jun 11, 00:50 UTC | 40m |
| 2026-06-10 | - | - | Jun 10, 21:05 UTC | Jun 10, 22:35 UTC | 1h 30m |
| 2026-06-10 | - | - | Jun 10, 18:10 UTC | Jun 10, 19:50 UTC | 1h 40m |
| 2026-06-09 | - | - | Jun 9, 22:05 UTC | Jun 9, 23:20 UTC | 1h 15m |
| 2026-06-09 | - | - | Jun 9, 17:40 UTC | Jun 9, 18:40 UTC | 1h 0m |
| 2026-06-08 | - | - | Jun 8, 17:45 UTC | Jun 8, 19:00 UTC | 1h 15m |
| 2026-06-06 | - | - | Jun 6, 22:05 UTC | Jun 6, 23:44 UTC | 1h 40m |
| 2026-06-06 | - | - | Jun 6, 18:19 UTC | Jun 6, 18:59 UTC | 40m |
| 2026-06-06 | - | - | Jun 6, 17:00 UTC | Jun 6, 17:34 UTC | 35m |
| 2026-06-05 | - | - | Jun 5, 19:55 UTC | Jun 5, 20:35 UTC | 40m |
| 2026-05-26 | - | - | May 26, 18:40 UTC | May 26, 18:50 UTC | 10m |
| 2026-05-24 | - | - | May 24, 20:00 UTC | May 24, 20:10 UTC | 10m |
| 2026-05-24 | - | - | May 24, 18:10 UTC | May 24, 18:25 UTC | 15m |
| 2026-05-21 | - | - | May 21, 03:10 UTC | May 21, 03:30 UTC | 20m |
| 2026-05-21 | - | - | May 21, 02:15 UTC | May 21, 02:35 UTC | 20m |
| 2026-05-20 | - | - | May 20, 20:50 UTC | May 20, 21:05 UTC | 15m |
| 2026-05-20 | - | - | May 20, 19:45 UTC | May 20, 20:05 UTC | 20m |
| 2026-05-10 | - | - | May 10, 21:54 UTC | May 10, 22:09 UTC | 15m |
| 2026-05-10 | - | - | May 10, 20:50 UTC | May 10, 21:10 UTC | 20m |
| 2026-05-09 | - | - | May 9, 16:45 UTC | May 9, 17:00 UTC | 15m |
| 2026-05-09 | - | - | May 9, 15:15 UTC | May 9, 15:35 UTC | 20m |
| 2026-05-08 | - | - | May 8, 20:40 UTC | May 8, 21:10 UTC | 30m |
| 2026-05-08 | - | - | May 8, 18:55 UTC | May 8, 19:25 UTC | 30m |
| 2026-05-07 | - | - | May 7, 22:10 UTC | May 7, 23:05 UTC | 55m |
| 2026-05-07 | - | - | May 7, 20:25 UTC | May 7, 21:15 UTC | 50m |
| 2026-04-28 | - | - | Apr 28, 21:45 UTC | Apr 28, 23:45 UTC | 2h 0m |
| 2026-04-27 | - | - | Apr 27, 19:25 UTC | Apr 27, 20:05 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 N912PA page for operator, model, and routing details .