# N401GR: 2019 Rotorsport UK CAVALON, registration cancelled 2023-08-10

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: August 10, 2023
- Status when cancelled: Valid registration
- Airframe: [Rotorsport UK CAVALON](https://openairdocs.org/model/rotorsport-uk-cavalon) (registry code 7980111)
- Engine: [Rotax 915 IS series](https://openairdocs.org/engine/rotax-915-is-series) (registry code 55620)
- Data sheets: [TCDS Q00011NY](https://openairdocs.org/tcds/Q00011NY), [TCDS E00051EN](https://openairdocs.org/tcds/E00051EN) (OpenAirDocs)
- Serial number: RSUK-V00450
- Year built: 2019
- Type of aircraft: Gyroplane
- Engine type: 4 cycle
- Airworthiness: Primary
- Airworthiness date: January 21, 2020
- Certificate issued: September 7, 2021
- Last registry action: June 10, 2023
- Mode S code: A4B0FE
- Owner when cancelled: [Muller Geoffrey D](https://openairdocs.org/faa-owner/MULLER%20GEOFFREY%20D)
- Location: [Manchester, MA](https://openairdocs.org/faa-place/MA/Manchester)
- Owner type: Individual
- Owner's area on the map: 42.5766° N, 70.7672° W: Placed by OpenAirDocs at the center of ZIP code 01944, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N401GR
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=401GR
- Page: https://openairdocs.org/deregistered/N401GR-2023-08-10

From the FAA registry file of November 3, 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 Rotorsport UK CAVALON: https://openairdocs.org/model/rotorsport-uk-cavalon.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 ERA23FA078](https://openairdocs.org/ntsb/ERA23FA078), Dec 4, 2022: Rotorsport UK Cavalon (N401GR), Beverly, MA, substantial damage, 1 fatal. Probable cause: The pilot’s improper yaw control during the takeoff initial climb, which resulted in an excessive sideslip and a subsequent loss of aircraft control.

## 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 20221204018249A](https://openairdocs.org/incident/20221204018249A), Dec 4, 2022: Rotorsport Uk Ltd CAVALON (N401GR), Beverly, MA, Destroyed, 1 fatal. During takeoff the aircraft became airborne near taxiway "a". The nose quickly yawed nearly 90 degrees to the left. Upon reaching an altitude of approximately…

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