# N5089Q: 2008 Casler Scott CX-4

- Status: Valid registration
- Airframe: [Casler Scott CX-4](https://openairdocs.org/model/casler-scott-cx-4) (registry code 05621QN, 1 seats)
- Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999)
- Serial number: 95
- Year built: 2008
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: April 1, 2008
- Certificate issued: May 22, 2023
- Expires: May 31, 2030
- Mode S code: A65B4A
- Registered owners: [Siefkes Siegfried H](https://openairdocs.org/faa-owner/SIEFKES%20SIEGFRIED%20H), [Baker Justin C](https://openairdocs.org/faa-owner/BAKER%20JUSTIN%20C)
- Location: [Baker City, OR](https://openairdocs.org/faa-place/OR/Baker%20City)
- Owner type: Partnership
- Owner's area on the map: 44.7963° N, 117.7833° W: Placed by OpenAirDocs at the center of ZIP code 97814, within about 16 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=5089Q
- Page: https://openairdocs.org/aircraft/N5089Q

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination.

## ADs that may apply (OpenAirDocs): 0 in force

### Matched by airframe (Casler Scott CX-4)

None in force.

### Matched by engine (Amateur-built UNKNOWN ENG)

None in force.

## Information bulletins (advisory)

None matched.

## 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…

## Reports on N5089Q not matched to an aircraft (1)

They name N5089Q, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19820622031419I](https://openairdocs.org/incident/19820622031419I), Jun 22, 1982: Cessna 340CESSNA (N5089Q), Bloomington, IN, Minor damage. Right gear collapsed after landing when right gear side brace bolt, PH464P4-26, sheared.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Earlier aircraft with N5089Q

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N5089Q before.

- [Cancelled 2003-02-13](https://openairdocs.org/deregistered/N5089Q-2003-02-13): Bell UH-1E, S/N 155351, built 1958. Triennial form not returned. Owner: [South Coast Helicopters Inc](https://openairdocs.org/faa-owner/SOUTH%20COAST%20HELICOPTERS%20INC), [Costa Mesa, CA](https://openairdocs.org/faa-place/CA/Costa%20Mesa)

## Related

- Other Casler Scott CX-4 aircraft: https://openairdocs.org/model/casler-scott-cx-4/aircraft.md
- The Amateur-built UNKNOWN ENG engine: https://openairdocs.org/engine/amateur-built-unknown-eng.md

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