GAA19CA056

NTSB accident investigation · Guimbal Cabri · Newberg, OR · November 13, 2018

Accident · No injuriesData collectionFinal report
Date
November 13, 2018, 09:49 local (17:49 UTC)
Place
Newberg, OR
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N370PAGuimbal Cabri
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report September 26, 2019
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20181113022499A
Case key
98632

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 pilot under instruction's failure to maintain directional control and the flight instructor's delayed remedial action.

Findings · 3

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · Student/instructed pilotHelicopteres Guimbal CABRI G2: 11 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedHelicopteres Guimbal CABRI G2: 3 casesAll aircraft: 3,958 casesProbable cause
Action: delayed actionPersonnel issues › Action/decision · Instructor/check pilotHelicopteres Guimbal CABRI G2: 5 casesAll aircraft: 894 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 flight instructor in the skid-equipped helicopter reported that the purpose of the flight was to conduct an aircraft transition flight. The pilot under instruction performed a touchdown autorotation on the asphalt runway. The helicopter touched down in a level attitude just right of the centerline and then slid on its skids off the right side of the runway into grass. The helicopter spun right and rolled onto its left side. The helicopter sustained substantial damage to the main and tail rotor drive systems. Both pilots reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Factual narrative

The flight instructor in the skid-equipped helicopter reported that the purpose of the flight was to conduct an aircraft transition flight. The pilot under instruction performed a touchdown autorotation on the asphalt runway. The helicopter touched down in a level attitude and just to the right of the centerline sliding to the right on its skids. Subsequently, the helicopter slid off the right side of the runway into the grass. The helicopter spun to the right and rolled onto its left side. The helicopter sustained substantial damage to the main and tail rotor drive system. Both pilot's reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation.

Aircraft

Registration
N370PA
Reported as
Guimbal Cabri (G2)
Category
Helicopter
Serial number
1062
Built
2014
Airframe hours
1,601.3
Engine
Lycoming O-360-J2A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Precision Aviation Training, LLC
Registered owner
Aircraft Guaranty Corp Trustee
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 27, 2018
Departed
17S · Newberg, OR
Destination
17S · Newberg, OR
Airport
17S · Chehalem Airpark, runway 07, 2,285 × 40 ft, asphalt
Equipment
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 · 2

As NTSB recorded them. NTSB leaves out names.

Role
Flight instructor
Age
35
Injuries
None
Certificates
Flight instructor, Commercial
Instrument ratings
Helicopter
Medical
Class 2, Without waivers/limitations
Last flight review
May 17, 2018
Seat
Left
Restraint
4-point
Flight hours
1,552 total · 797 in this make and model · 1,377 as pilot in command · 107 in the last 90 days · 22 in the last 30 days · 1 in the last 24 hours
Role
Pilot
Age
51
Injuries
None
Certificates
Airline transport, Flight instructor
Instrument ratings
Helicopter
Medical
Class 1, Without waivers/limitations
Last flight review
August 8, 2018
Seat
Right
Restraint
4-point
Flight hours
2,950 total · 7 in this make and model · 2,860 as pilot in command · 4 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Temperature
39 °F, dew point 34 °F
Altimeter
30.45 inHg
Observed at
KMMV, 8 nm away

Docket · 2

The files NTSB released with the investigation on June 26, 2019, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.7 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.