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NTSB Report

August 9, 2010 · Cessna 170 A · N179MM

Salt Lake City, UT

Overview

Report Status
Final with probable cause
Event Type
Accident
Date
August 9, 2010
Injury Outcomes
1 injury (1 minor injury), 1 uninjured
Location
Salt Lake City, UT
Aircraft
Cessna 170 A
Tail Number
N179MM
Operator
Harold G Jensen
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR10CA394

The pilot reported that he started his cross country flight in the tailwheel-equipped airplane in San Antonio, Texas with two rest stops in Roswell and Farmington, New Mexico. When landing to stop for a third time, the pilot checked the airport's automated weather, which indicated a “quartering right crosswind” of about 8 knots. The approach and landing were uneventful. During the landing roll a gust of wind struck the airplane and the airplane initiated a right turn. Despite the pilot’s control inputs the airplane ground looped, collapsing the left main landing gear and substantially damaging the left wing, fuselage and empennage. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. The accident airport’s automated weather observation system reported at the time of the accident, wind was from 240 at 13 knots. The pilot’s total flight time for the day was approximately 8.5 hours.

NTSB Probable Cause

Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C

Full Narrative

The pilot reported that he started his cross country flight in the tailwheel-equipped airplane in San Antonio, Texas with two rest stops in Roswell and Farmington, New Mexico. When landing to stop for a third time, the pilot checked the airport's automated weather, which indicated a “quartering right crosswind” of about 8 knots. The approach and landing were uneventful. During the landing roll a gust of wind struck the airplane and the airplane initiated a right turn. Despite the pilot’s control inputs the airplane ground looped, collapsing the left main landing gear and substantially damaging the left wing, fuselage and empennage. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. The accident airport’s automated weather observation system reported at the time of the accident, wind was from 240 at 13 knots. The pilot’s total flight time for the day was approximately 8.5 hours.

Flight

Event TypeAccident
Event Time17:36 MDT
Nearest AirportSouth Valley Regional Airport (0nm)
Runway16
Runway Length5860 ft
Runway Width100 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 170 A
Tail NumberN179MM
Aircraft CategoryAir
DamageSubstantial
OperatorHarold G Jensen
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360 series · Reciprocating · 180
Seats4

People & Injuries

Injury Summary1 injury (1 minor injury), 1 uninjured
Fatal0
Serious0
Minor1
Uninjured1
Total2
Crew 1Age 69 · Third Class · None

Conditions

ConditionsVMC
LightDaylight
Wind240° @ 13 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point36 C
Altimeter30.00 inHg
Observation Time23:28
Weather SourceWFAC

Appendix: Source Data