# Mark O Treidel AR-1

- Type: Aircraft model (FAA registry)
- Registry code: 056358L
- Manufacturer (registry): MARK O TREIDEL
- Model: AR-1
- Aircraft type: Rotorcraft
- Category: Rotorcraft
- Engines: 1 · 4 cycle
- Seats: 2
- Weight class: Up to 12,499 lb
- Certification: Not type certificated
- Registered aircraft: 1
- Page: https://openairdocs.org/model/mark-o-treidel-ar-1

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (1)

- [N529MW](https://openairdocs.org/aircraft/N529MW): [Treidel Mark O](https://openairdocs.org/faa-owner/TREIDEL%20MARK%20O), [Englewood, CO](https://openairdocs.org/faa-place/CO/Englewood), built 2017, S/N 0014

## 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 CEN26LA067](https://openairdocs.org/ntsb/CEN26LA067), Dec 16, 2025: Mark O Treidel American Ranger AR-1 (N529MW), Denver, CO, substantial damage. Probable cause: The pilot’s failure to attain rotor RPM and maintain proper rotor disc angle during takeoff which resulted in a rotor strike with the rudder.

## 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 20251216019779A](https://openairdocs.org/incident/20251216019779A), Dec 16, 2025: Mark O Treidel AR-1 (N529MW), Watkins, CO, Substantial damage. On 12/16/2005 at 1045 MDT an experimental gyrocopter leaving Colorado Air And Space Port experienced a gust of wind causing the main rotor to contact the…

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Gregory A Spicola AR-1](https://openairdocs.org/model/gregory-a-spicola-ar-1): 2 registered aircraft, registry code 05635WE
- [Danny Whitten AR-1](https://openairdocs.org/model/danny-whitten-ar-1): 1 registered aircraft, registry code 05634Z1
- [Clifford E Massey AR-1](https://openairdocs.org/model/clifford-e-massey-ar-1): 1 registered aircraft, registry code 05634ZX
- [Gregory L Sides AR-1](https://openairdocs.org/model/gregory-l-sides-ar-1): 1 registered aircraft, registry code 056355I
- [Bill G Whitehouse AR-1](https://openairdocs.org/model/bill-g-whitehouse-ar-1): 1 registered aircraft, registry code 05635GK
- [John M Lodge AR-1](https://openairdocs.org/model/john-m-lodge-ar-1): 1 registered aircraft, registry code 05635GP
- [Edward B Resnick AR-1](https://openairdocs.org/model/edward-b-resnick-ar-1): 1 registered aircraft, registry code 05635Z6
- [Bob Sidney Morris JR AR-1](https://openairdocs.org/model/bob-sidney-morris-jr-ar-1): 1 registered aircraft, registry code 056362X
- [Walter S Johnson III AR-1](https://openairdocs.org/model/walter-s-johnson-iii-ar-1): 1 registered aircraft, registry code 056369Z
- [George A Dietrich AR-1](https://openairdocs.org/model/george-a-dietrich-ar-1): 1 registered aircraft, registry code 05636FK
- [Peter A Broussard AR-1](https://openairdocs.org/model/peter-a-broussard-ar-1): 1 registered aircraft, registry code 05636IL
- [Ludwig Nicholas Ladas II AR-1](https://openairdocs.org/model/ludwig-nicholas-ladas-ii-ar-1): 1 registered aircraft, registry code 05636K1

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