ERA18LA027

NTSB accident investigation · Homer Autogyro Cavalon · Oak Island, NC · November 17, 2017

Accident · No injuriesClass 3 · LimitedFinal report
Date
November 17, 2017, 10:00 local (15:00 UTC)
Place
Oak Island, NC
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N470CHHomer Autogyro Cavalon
Defining event
Initial climb: Loss of engine power (partial)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20171117018839A
Case key
96349

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 NTSB’s determination of the probable cause, and any contributing factors.

A partial loss of engine power for reasons that could not be determined based on the available information.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings.

Analysis

The pilot and flight instructor were conducting a flight review in the pilot’s experimental gyroplane. Both reported that the engine start, run up, and takeoff were normal. About 100 ft above ground level, they increased throttle to full power, which engaged the turbocharger. Immediately after, there was a rapid loss of engine power from 5,000 rpm to 3,000 rpm, and they were unable to maintain flight. The flight instructor took control of the aircraft and made a 180° turn back toward the runway but was unable to reach the runway at the completion of the turn. The aircraft landed hard in the grass, resulting in substantial damage to the fuselage. The pilot reported that the aircraft was damaged beyond repair and disposed of; therefore, no additional examination of the engine was conducted, and the reason for the loss of power could not be determined.

Factual narrative

On November 17, 2017, about 1000 eastern standard time, an experimental, amateur-built Autogyro Cavalon, N470CH, was substantially damaged when it was involved in an accident near Oak Island, North Carolina. The private pilot and flight instructor were not injured. The flight was conducted as a Title 14 Code of Federal Regulations Part 91 instructional flight. The pilot, who was also the owner of the aircraft, reported that he was receiving instruction for his flight review. The engine run-up and takeoff to the southwest were normal, but while climbing through 100 ft above ground level, shortly after applying full power, which engaged the turbocharger, there was a rapid loss of engine power from 5,000 rpm to 3,000 rpm, and they were unable to maintain flight. The flight instructor took control of the aircraft and made a 180° turn back toward runway 5. Immediately after completing the turn, the aircraft landed hard in the grassy area west of the runway and rolled to a stop. Examination by a Federal Aviation Administration (FAA) inspector revealed that the fuselage was cracked in multiple locations, and the center throttle console was buckled, which revealed substantial internal damage to the airframe. Subsequent follow-up with the pilot revealed that the gyrocopter was damaged beyond repair and disposed of with no additional troubleshooting or examination of the engine or turbocharger conducted.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident.

Aircraft

Registration
N470CH
Reported as
Homer Autogyro Cavalon (NO SERIES)
Category
Gyroplane, amateur-built
Serial number
V00015
Built
2012
Airframe hours
217
Engine
Rotax 914UL, 115 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
AIC Recycling LLC
Registered owner
AIC Recycling LLC
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · November 4, 2017 · 1 hours before
Departed
SUT · Oak Island, NC
Destination
SUT · Oak Island, NC
Airport
SUT · Cape Fear Rgnl Jetport/Howie F, runway 23, 5,505 × 100 ft, asphalt
Equipment
Handheld GPS

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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
67
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
July 25, 2014
Seat
Left
Restraint
3-point
Flight hours
535 total · 218 in this make and model
Role
Flight instructor
Age
54
Injuries
None
Certificates
Private, Sport Pilot, Flight instructor
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Right
Restraint
4-point
Flight hours
330 total

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 13 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
52 °F, dew point 34 °F
Altimeter
30.22 inHg
Observed at
ILM, 22 nm away

Docket · 5

The files NTSB released with the investigation on July 15, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 8.9 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.