sensors Mode-S transponder
AB15B1
ICAO 24-bit transponder address · allocated to United States
Currently assigned to N813ND · PIPER PA-28R-180/200/201 · operated by PLANE NONSENSE INC
- Hex
- AB15B1
- Octal
- 52612661
- Decimal
- 11,212,209
- Country
- US
- Tail
- N813ND
- Type
- P28R
- Flights observed
- 55
- Distinct callsigns
- 1
- Country
- US
- Last broadcast
- Jul 23, 13:40 UTC
Last known position
Country allocation
The ICAO 24-bit address AB15B1 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 |
|---|---|---|---|
| N813ND | - | 55 | 2026-07-23 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-23 | N813ND | BED → BED | Jul 23, 12:50 UTC | Jul 23, 13:40 UTC | 50m |
| 2026-07-19 | N813ND | - | Jul 19, 19:10 UTC | Jul 19, 19:55 UTC | 45m |
| 2026-07-19 | N813ND | - | Jul 19, 14:35 UTC | Jul 19, 15:10 UTC | 35m |
| 2026-07-09 | N813ND | - | Jul 9, 21:00 UTC | Jul 9, 21:10 UTC | 10m |
| 2026-07-09 | N813ND | - | Jul 9, 17:00 UTC | Jul 9, 18:20 UTC | 1h 20m |
| 2026-07-09 | N813ND | - | Jul 9, 11:50 UTC | Jul 9, 13:20 UTC | 1h 30m |
| 2026-07-03 | N813ND | - | Jul 3, 18:15 UTC | Jul 3, 18:50 UTC | 35m |
| 2026-07-03 | N813ND | - | Jul 3, 15:10 UTC | Jul 3, 15:45 UTC | 35m |
| 2026-06-29 | N813ND | - | Jun 29, 17:14 UTC | Jun 29, 18:10 UTC | 55m |
| 2026-06-29 | N813ND | - | Jun 29, 15:49 UTC | Jun 29, 16:35 UTC | 45m |
| 2026-06-28 | N813ND | - | Jun 28, 18:05 UTC | Jun 28, 18:40 UTC | 35m |
| 2026-06-26 | N813ND | OWD → OWD | Jun 26, 19:45 UTC | Jun 26, 20:29 UTC | 45m |
| 2026-06-25 | N813ND | BED → OWD | Jun 25, 22:34 UTC | Jun 25, 22:54 UTC | 20m |
| 2026-06-19 | N813ND | - | Jun 19, 13:44 UTC | Jun 19, 14:34 UTC | 50m |
| 2026-06-15 | N813ND | - | Jun 15, 21:55 UTC | Jun 15, 23:09 UTC | 1h 15m |
| 2026-06-15 | N813ND | - | Jun 15, 16:59 UTC | Jun 15, 19:30 UTC | 2h 30m |
| 2026-06-12 | N813ND | BED → BED | Jun 12, 17:30 UTC | Jun 12, 18:25 UTC | 55m |
| 2026-06-12 | N813ND | - | Jun 12, 16:30 UTC | Jun 12, 16:55 UTC | 25m |
| 2026-06-10 | N813ND | - | Jun 10, 17:45 UTC | Jun 10, 18:05 UTC | 20m |
| 2026-06-10 | N813ND | - | Jun 10, 15:55 UTC | Jun 10, 17:40 UTC | 1h 45m |
| 2026-06-09 | N813ND | - | Jun 9, 16:55 UTC | Jun 9, 18:20 UTC | 1h 25m |
| 2026-06-06 | N813ND | - | Jun 6, 19:04 UTC | Jun 6, 19:44 UTC | 40m |
| 2026-06-06 | N813ND | - | Jun 6, 16:20 UTC | Jun 6, 16:34 UTC | 15m |
| 2026-06-05 | N813ND | BED → BED | Jun 5, 14:20 UTC | Jun 5, 15:15 UTC | 55m |
| 2026-06-04 | N813ND | - | Jun 4, 23:30 UTC | Jun 4, 23:50 UTC | 20m |
| 2026-06-04 | N813ND | - | Jun 4, 20:55 UTC | Jun 4, 21:20 UTC | 25m |
| 2026-06-02 | N813ND | BED → BED | Jun 2, 17:55 UTC | Jun 2, 19:30 UTC | 1h 35m |
| 2026-05-27 | N813ND | - | May 27, 16:35 UTC | May 27, 17:15 UTC | 40m |
| 2026-05-26 | N813ND | - | May 26, 20:05 UTC | May 26, 20:40 UTC | 35m |
| 2026-05-26 | N813ND | - | May 26, 18:45 UTC | May 26, 19:34 UTC | 50m |
| 2026-05-26 | N813ND | - | May 26, 16:05 UTC | May 26, 18:05 UTC | 2h 0m |
| 2026-05-25 | N813ND | - | May 25, 18:55 UTC | May 25, 19:44 UTC | 50m |
| 2026-05-23 | N813ND | - | May 23, 16:45 UTC | May 23, 17:40 UTC | 55m |
| 2026-05-22 | N813ND | - | May 22, 14:45 UTC | May 22, 15:35 UTC | 50m |
| 2026-05-21 | N813ND | - | May 21, 17:10 UTC | May 21, 18:05 UTC | 55m |
| 2026-05-18 | N813ND | - | May 18, 19:05 UTC | May 18, 19:50 UTC | 45m |
| 2026-05-17 | N813ND | BED → MMN | May 17, 14:25 UTC | May 17, 15:05 UTC | 40m |
| 2026-05-16 | N813ND | - | May 16, 16:40 UTC | May 16, 17:05 UTC | 25m |
| 2026-05-16 | N813ND | - | May 16, 14:20 UTC | May 16, 15:16 UTC | 55m |
| 2026-05-12 | N813ND | - | May 12, 16:40 UTC | May 12, 17:30 UTC | 50m |
| 2026-05-12 | N813ND | - | May 12, 14:30 UTC | May 12, 15:20 UTC | 50m |
| 2026-05-12 | N813ND | - | May 12, 11:55 UTC | May 12, 13:35 UTC | 1h 40m |
| 2026-05-08 | N813ND | - | May 8, 12:04 UTC | May 8, 13:00 UTC | 55m |
| 2026-04-28 | N813ND | BED → BED | Apr 28, 14:25 UTC | Apr 28, 15:05 UTC | 40m |
| 2026-04-28 | N813ND | - | Apr 28, 13:00 UTC | Apr 28, 13:35 UTC | 35m |
| 2026-04-26 | N813ND | - | Apr 26, 15:50 UTC | Apr 26, 16:45 UTC | 55m |
| 2026-04-25 | N813ND | - | Apr 25, 18:55 UTC | Apr 25, 20:00 UTC | 1h 5m |
| 2026-04-24 | N813ND | - | Apr 24, 22:15 UTC | Apr 24, 23:05 UTC | 50m |
| 2026-04-24 | N813ND | - | Apr 24, 16:35 UTC | Apr 24, 17:25 UTC | 50m |
| 2026-04-24 | N813ND | - | Apr 24, 14:15 UTC | Apr 24, 15:25 UTC | 1h 10m |
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 N813ND page for operator, model, and routing details .