# N41RS: 1978 Schaefer Richard M. THORP T-18

- Status: Valid registration
- Airframe: [Schaefer Richard M. THORP T-18](https://openairdocs.org/model/schaefer-richard-m-thorp-t-18) (registry code 89510BV, 2 seats)
- Engine: [Lycoming I0360 SER A&C](https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (registry code 41511)
- Serial number: 821
- Year built: 1978
- Type: Fixed wing single engine
- Engine type: Reciprocating
- Airworthiness: Experimental, amateur built
- Airworthiness date: December 28, 1979
- Certificate issued: March 30, 2022
- Expires: March 31, 2029
- Mode S code: A4D34F
- Registered owner: [Priest Peter J](https://openairdocs.org/faa-owner/PRIEST%20PETER%20J)
- Location: [Elk Grove, CA](https://openairdocs.org/faa-place/CA/Elk%20Grove)
- Owner type: Individual
- Owner's area on the map: 38.3298° N, 121.4320° W: Placed by OpenAirDocs at the center of ZIP code 95757, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=41RS
- Page: https://openairdocs.org/aircraft/N41RS

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 (Schaefer Richard M. THORP T-18)

None in force.

### Matched by engine (Lycoming I0360 SER A&C)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N41RS.

## 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.

- [Incident 19831228073269I](https://openairdocs.org/incident/19831228073269I), Dec 28, 1983: Amtrth THORPT18 (N41RS), Chino, CA, Minor damage. Pilot reported gear collapsed on the landing roll. No details given.

## 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.

## Related

- Other Schaefer Richard M. THORP T-18 aircraft: https://openairdocs.org/model/schaefer-richard-m-thorp-t-18/aircraft.md
- The Lycoming I0360 SER A&C engine: https://openairdocs.org/engine/lycoming-i0360-ser-a-c.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.