CEN22LA432

NTSB accident investigation · Hibbard Norman E Thorp T-18 · Del Norte, CO · September 25, 2022

Accident · Minor injuriesClass 4 · LimitedFinal report
Date
September 25, 2022, 14:11 local (20:11 UTC)
Place
Del Norte, CO · rwy
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N18NHHibbard Norman E Thorp T-18
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
FAA Flight Standards
FAA report
20220925015859A
Case key
106002

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’s loss of airplane control during landing due to a wind gust.

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.

Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeHibbard Norman E THORP T-18: 1 caseAll aircraft: 1,199 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedHibbard Norman E THORP T-18: 1 caseAll aircraft: 3,958 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

According to the pilot, the wind at the airport was from “082° at 7 knots” based on the automated observation. He entered a right traffic pattern and saw “no change” on the windsock before landing. After landing, the passenger commented that the windsock had changed. About that time, “the right wing came back up” and the airplane “swerved” to the right. The pilot initially added full engine power to go-around; however, he was unable to regain directional control and reduced engine power to idle. The airplane departed the runway and subsequently nosed over. The pilot reported that there were no anomalies which would have precluded normal operation. The vertical stabilizer and rudder sustained substantial damage during the accident.

Aircraft

Registration
N18NH
Reported as
Hibbard Norman E Thorp T-18
Category
Airplane, amateur-built
Serial number
1313
Built
1993
Airframe hours
622.7
Engine
Lycoming O-360-A1D, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · September 1, 2022
Departed
SEZ · Sedona, AZ
Destination
RCV · Del Norte, CO
Flight plan
VFR
Airport
RCV · Astronaut Kent Rominger, runway 6, 6,051 × 75 ft, asphalt
Equipment
Electronic primary flight display, Electronic flight bag or handheld device, ADS-B, Satellite tracking device, 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

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
78
Injuries
Minor
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
BasicMed, Without waivers/limitations
Last flight review
August 14, 2021
Seat
Left
Restraint
3-point
Flight hours
10,200 total · 250 in this make and model · 10,000 as pilot in command · 23 in the last 90 days · 14 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
120° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 36 °F
Altimeter
30.43 inHg
Observed at
KRCV, 0.5 nm away
METAR
METAR KRCV 252015Z AUTO 12006KT 10SM CLR 21/02 A3043

Docket · 2

The files NTSB released with the investigation on October 18, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 878 KB 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.