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NTSB Report
July 15, 2019 · Cessna 170 B · N2946D
Bison, SD
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
July 15, 2019
Injury Outcomes
No injuries (1 uninjured)
Location
Bison, SD
Aircraft
Cessna 170 B (1955)
Tail Number
N2946D
Injuries
None
Aircraft Damage
Substantial
NTSB Number
GAA19CA487
The pilot reported that, upon landing, the airplane veered left. He attempted to correct with rudder and tapping on the brakes, but the airplane ground looped. The pilot added that he believed that "the landing gear was out of alignment." The airplane sustained substantial damage to the fuselage and the windscreen. According to a Federal Aviation Administration inspector, the fuselage damage was consistent with a hard landing and ground loop.
NTSB Probable Cause
Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
Full Narrative
The pilot of a recently purchased tailwheel-equipped airplane reported that, upon landing, the airplane veered left. He attempted to correct with rudder and tapping on the brakes, but the aircraft ground looped. The pilot further reported that he believed that "the landing gear was out of alignment." Photos of the fuselage damage, provided by the FAA inspector, are consistent with a hard landing and ground loop. The FAA inspector further identified the last annual inspection was conducted on October 1, 2014. The airplane sustained substantial damage to the fuselage and wind screen. An automated weather observation station located 31 miles to the north, reported that, about the time of the accident, the wind was from 220° at 3 knots. The airplane was landing on runway 29.
Flight
Event TypeAccident
Event Time12:40 MDT
Nearest AirportBison Muni (0nm E)
Runway29
Runway Length3500 ft
Runway Width60 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 170 B
Tail NumberN2946D
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-300 · Reciprocating · 145
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 75 · Basc · None
Conditions
ConditionsVMC
LightDaylight
Wind220° @ 3 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point64 F
Altimeter29.94 inHg
Observation Time22:53
Weather SourceWFAC