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Aviation safety reports, made easier to study

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NTSB Report

June 9, 2001 · Piper PA-20 · N7783K

Winnemucca, NV

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
June 9, 2001
Injury Outcomes
No injuries (1 uninjured)
Location
Winnemucca, NV
Aircraft
Piper PA-20
Tail Number
N7783K
Operator
Gregory S Mcadams
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX01LA206

After touchdown and under a crosswind condition, the airplane became partially airborne again over the runway (runway 32). The right wing struck the ground. The right main landing gear had also collapsed when the airplane "hit hard." The pilot lost directional control and the airplane swerved off the runway. Winds at the airport were reported by the ASOS (Automated Surface Observation Station) as 270 degrees at 13 knots. Peak wind speeds of 26 knots were also recorded. The Winnemucca weather station service records were obtained and did not indicate any operational downtime. The pilot reported a wind gust and the direction as calm on the Accident Report form 6120.1/2. He did not report that he had received an in-flight advisory or had observed the windsock before landing. A weather briefing was received by the pilot 7 hours 45 minutes prior to the accident.

NTSB Probable Cause

The pilot's failure to obtain weather information or an in-flight advisory that would have described current wind information at the destination airport and his subsequent failure to maintain directional control during landing.

Full Narrative

On June 8, 2001, about 2215 Pacific daylight time, a Piper PA-20, N7783K, sustained substantial damage during a ground loop while landing at the Winnemucca, Nevada, airport. The private pilot/owner was operating the airplane under the provisions of 14 CFR Part 91. The pilot sustained no injuries. The cross-country night flight departed Mandril, Idaho, at an unknown time. Visual meteorological conditions prevailed, and a flight plan had not been filed. According to the pilot's statements to the Safety Board investigator, he made a normal landing and was rolling out when a gust of wind lifted the left wing. The airplane became partially airborne and landed hard, collapsing the right main landing gear. Structural damage also resulted when the right wing was bent after it struck the ground. In his written report, the pilot stated that he had received a weather briefing 7 hours 45 minutes prior to the accident. Additionally, he reported a wind gust and the direction as calm at the Winnemucca Airport. He did not report having observed the windsock or having monitored the Winnemucca Automated Surface Observation System located on the field prior to the approach. The Winnemucca METAR reported the wind information; 270 degrees at 13 knots with peak winds at 280 degrees and 26 knots, respectively. The National Weather Service station record for Winnemucca was requested for June 08, 2001, and the information obtained did not indicate any maintenance or operation downtime. The record displayed only one entry in the service logs for the following day. The entry read that the staff had "dialed into the site and saved 12 hours of 5-minute data after receiving notification of an aircraft incident."

Flight

Event TypeAccident
Event Time22:15 PDT
Nearest AirportWinnemucca Muni (0nm WSW)
Runway32
Runway Length7000 ft
Runway Width100 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftPiper PA-20
Tail NumberN7783K
Aircraft CategoryAir
DamageSubstantial
OperatorGregory S Mcadams
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-290-D · Reciprocating · 125
Seats4

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 50 · Third Class · None

Conditions

ConditionsVMC
LightNight
Wind270° @ 13 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point28 C
Altimeter29.95 inHg
Observation Time04:56
Weather SourceWFAC

Appendix: Source Data