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NTSB Report
November 9, 2013 · Aviat Aircraft A 1B B · N510MA
Lagrange, WY
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
November 9, 2013
Injury Outcomes
1 injury (1 minor injury)
Location
Lagrange, WY
Aircraft
Aviat Aircraft A 1B B (2005)
Tail Number
N510MA
Operator
Colorado Backcountry Flyers
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR14CA047
The pilot reported that after touchdown on the grass/sod airstrip, the landing roll was normal for about 100 feet, but then the airplane came to an abrupt stop, like it had hit something. The airplane nosed over substantially damaging the rudder and wings. The pilot and ranch personnel inspected the landing area and followed the airplane's tracks back toward the point of touchdown. They found a large hole, likely dug by an animal, approximately 24" deep, and in line with the airplane's right tire track. The pilot said he did not see the hole when flying downwind, nor on the base leg, or final approach. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.
NTSB Probable Cause
Environmental issues-Physical environment-Object/animal/substance-Hidden/submerged object-Contributed to outcome
Full Narrative
The pilot reported that after touchdown on the grass/sod airstrip, the landing roll was normal for about 100 feet, but then the airplane came to an abrupt stop, like it had hit something. The airplane nosed over substantially damaging the rudder and wings. The pilot and ranch personnel inspected the landing area and followed the airplane's tracks back toward the point of touchdown. They found a large hole, likely dug by an animal, approximately 24" deep, and in line with the airplane's right tire track. The pilot said he did not see the hole when flying downwind, nor on the base leg, or final approach. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation.
Flight
Event TypeAccident
Event Time07:30 MST
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftAviat Aircraft A 1B B
Tail NumberN510MA
Aircraft CategoryAir
DamageSubstantial
OperatorColorado Backcountry Flyers
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360 SERIES · Reciprocating · 180
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 66 · Third Class · Minor
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility50 sm
CeilingNone
Temperature / Dew Point45 C / 19 C
Altimeter30.14 inHg
Observation Time13:30
Weather SourcePILO