WPR25LA115

NTSB accident investigation · Rotorsport UK Cavalon · Murrieta, CA · March 20, 2025

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
March 20, 2025, 13:02 local (20:02 UTC)
Place
Murrieta, CA · short final for F70
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N157PRotorsport UK Cavalon
Defining event
Approach-VFR pattern final: Aerodynamic stall/spin
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20250320002489A
Case key
199898

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The student pilot’s failure to maintain adequate airspeed during an approach and subsequent descent into terrain. Contributing to the accident was the student pilot’s failure to perform a go-around maneuver.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: airspeedAircraft › Aircraft oper/perf/capability · Not attained/maintainedRotorsport UK CAVALON: 2 casesAll aircraft: 1,681 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotRotorsport UK CAVALON: 1 caseAll aircraft: 9,295 casesProbable cause
Action: lack of actionPersonnel issues › Action/decision · Student/instructed pilotRotorsport UK CAVALON: 1 caseAll aircraft: 792 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The student pilot reported that she was on a solo cross-country flight and had entered the airport traffic pattern. While on the base leg, she slowed the gyroplane to follow an airplane that was established on final approach. She then turned final after the airplane had landed, however, the airplane did not exit the runway as she had anticipated. She slowed the gyroplane further and allowed a “slow vertical descent” for additional spacing from the airplane. The pilot then noticed that she had allowed the airspeed and altitude to decay. She attempted to recover by applying full throttle, however, the gyroplane turned right into a grass area and impacted terrain about 250 ft from the approach end of the runway. The rotor blades, fuselage, keel, and rudder were substantially damaged. The pilot reported that there were no preaccident mechanical malfunctions or failures that would have precluded normal operation.

Aircraft

Registration
N157P
Reported as
Rotorsport UK Cavalon
Category
Gyroplane
Serial number
RSUK-V00548
Built
2023
Airframe hours
123
Engine
Rotax 915 IS, 135 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · March 19, 2025 · 3.5 hours before
Departed
KCNO · Chino, CA
Destination
F70 · Murrieta, CA
Airport
F70 · French Valley Airport, runway 19/36, 6,000 × 75 ft, asphalt
Equipment
Auto-pilot, Electronic multifunction display, ADS-B, Electronic primary flight display

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
55
Injuries
Minor
Certificate
Student
Medical
Class 3, With waivers/limitations
Seat
Right
Restraint
4-point
Flight hours
58 total · 47 in this make and model · 4 as pilot in command · 36 in the last 90 days · 26 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 30 °F
Altimeter
30.10 inHg
Observed at
KHMT, 10 nm away
METAR
KHMT 201955Z AUTO 21005KT 10SM CLR 21/M01 A3010

Docket · 2

The files NTSB released with the investigation on May 29, 2025, on NTSB’s docket system: statements, records, photos and specialists’ reports. 6.0 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.