# Casler Scott CX-4

- Type: Aircraft model (FAA registry)
- Registry code: 05621QN
- Manufacturer (registry): CASLER SCOTT
- Model: CX-4
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 1
- Weight class: Up to 12,499 lb
- Certification: Not type certificated
- Registered aircraft: 1
- Page: https://openairdocs.org/model/casler-scott-cx-4

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)

- [N5089Q](https://openairdocs.org/aircraft/N5089Q): [Siefkes Siegfried H](https://openairdocs.org/faa-owner/SIEFKES%20SIEGFRIED%20H), [Baker City, OR](https://openairdocs.org/faa-place/OR/Baker%20City), built 2008, S/N 95

## 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 WPR12CA033](https://openairdocs.org/ntsb/WPR12CA033), Nov 9, 2011: Casler Scott CX-4 (N5089Q), San Carlos, AZ, substantial damage. Probable cause: The pilot's inadequate directional control during takeoff.

## FAA accident and incident reports (2)

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 20111109026609A](https://openairdocs.org/incident/20111109026609A), Nov 9, 2011: Casler Scott CX-4 (N5089Q), San Carlos, AZ, Substantial damage. [privacy data omitted] Had just bought the experimental CX4 aircraft. He was flying the aircraft to albuquerque. [privacy data omitted] Stated he became…
- [Incident 20090605009709I](https://openairdocs.org/incident/20090605009709I), Jun 5, 2009: Casler CX4 (N5089Q), Chandler, AZ, Minor damage. (-23) On June 5, 2009 at approximately 0800 MST, N5089Q was operating at 3000 feet when a piece of the propeller blade broke off and caused the engine to…

## The same model under other registry codes

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

- [Thatcher CX4](https://openairdocs.org/model/thatcher-cx4): 1 registered aircraft, registry code 05623N1
- [Harrison James Hugh CX4](https://openairdocs.org/model/harrison-james-hugh-cx4): 1 registered aircraft, registry code 056268D
- [Leonard Wilson L CX4](https://openairdocs.org/model/leonard-wilson-l-cx4): 1 registered aircraft, registry code 05626RI
- [Leonard Phillip R CX4](https://openairdocs.org/model/leonard-phillip-r-cx4): 1 registered aircraft, registry code 05626RR
- [Kelly Dennis CX4](https://openairdocs.org/model/kelly-dennis-cx4): 1 registered aircraft, registry code 05627I2
- [Williams John B CX4](https://openairdocs.org/model/williams-john-b-cx4): 1 registered aircraft, registry code 05627NM
- [Jones Wade A CX4](https://openairdocs.org/model/jones-wade-a-cx4): 1 registered aircraft, registry code 056294M
- [Marples John R CX-4](https://openairdocs.org/model/marples-john-r-cx-4): 1 registered aircraft, registry code 05629RZ
- [Balazs Thomas CX4](https://openairdocs.org/model/balazs-thomas-cx4): 1 registered aircraft, registry code 05630GO
- [Morton Gene A CX4](https://openairdocs.org/model/morton-gene-a-cx4): 1 registered aircraft, registry code 05630IN
- [Thomas Hrdlicka CX4](https://openairdocs.org/model/thomas-hrdlicka-cx4): 1 registered aircraft, registry code 05633ZN
- [Allen R Cooper CX-4](https://openairdocs.org/model/allen-r-cooper-cx-4): 1 registered aircraft, registry code 05634E9

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