# N125KP: 2005 Mason Robert KOLB MARK 3X, registration cancelled 2017-09-07

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: September 7, 2017
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Mason Robert KOLB MARK 3X](https://openairdocs.org/model/mason-robert-kolb-mark-3x) (registry code 059007E)
- Engine: [Rotax 582DCDI-99](https://openairdocs.org/engine/rotax-582dcdi-99) (registry code 55561)
- Serial number: M3X0340049
- Year built: 2005
- Type of aircraft: Fixed wing single engine
- Engine type: 2 cycle
- Airworthiness: Experimental, registered before 01/31/08
- Airworthiness date: October 18, 2006
- Certificate issued: December 1, 2010
- Last registry action: December 1, 2010
- Mode S code: A06734
- Owner when cancelled: [Holle Kenneth D](https://openairdocs.org/faa-owner/HOLLE%20KENNETH%20D)
- Location: [Hays, KS](https://openairdocs.org/faa-place/KS/Hays)
- Owner type: Individual
- Owner's area on the map: 38.8736° N, 99.3409° W: Placed by OpenAirDocs at the center of ZIP code 67601, within about 11 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N125KP
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=125KP
- Page: https://openairdocs.org/deregistered/N125KP-2017-09-07

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Mason Robert KOLB MARK 3X: https://openairdocs.org/model/mason-robert-kolb-mark-3x.md

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN13LA254](https://openairdocs.org/ntsb/CEN13LA254), May 1, 2013: Mason Robert Kolb Mark 3X (N125KP), Lawrence, KS, substantial damage. Probable cause: The noncertificated pilot’s improper decision to depart with a tailwind.

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20130501016309A](https://openairdocs.org/incident/20130501016309A), May 1, 2013: Mason Robert KOLB MARK 3X (N125KP), Lawrence, KS, Substantial damage. The pilot attempted a downwind takeoff of a south direction with winds reported 060 degrees, 12 knots gusting to 16. After rotation the aircraft veered to the…

## Other aircraft with N125KP

- [Registered now](https://openairdocs.org/aircraft/N125KP): Best Aviation Services 56-DH, S/N 12122014, built 2025

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