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NTSB Report
December 23, 2007 · Piper PA-18-150 · N9086Y
Truckee, CA
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
December 23, 2007
Injury Outcomes
No injuries (1 uninjured)
Location
Truckee, CA
Aircraft
Piper PA-18-150
Tail Number
N9086Y
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA08CA053
The pilot said that his engine started running rough while flying over mountainous terrain. There was a large snow covered meadow beneath him, so he circled it while trying to resolve his engine problem. His attempts to regain full power were unsuccessful. The airplane was equipped with large tundra tires, and the pilot believed that a precautionary landing under partial power was more prudent than proceeding to the nearest airport while crossing mountain ridges and over flying the surrounding forest. During a wheel landing in the snow, the airplane nosed over and came to rest inverted. The forward section of the airframe, both wings spars, and the vertical stabilizer were bent. The reason for the partial power loss was undetermined.
NTSB Probable Cause
The loss of partial engine power during cruise for undetermined reasons. A contributing factor was the snow covered terrain.
Full Narrative
The pilot said that while flying over mountainous terrain, his engine started running rough. There was a large snow covered meadow beneath him, so he circled it while trying to resolve his engine problem. His attempts to regain full power were unsuccessful. The airplane was equipped with large tundra tires, and the pilot believed that a precautionary landing under partial power was more prudent than proceeding to the nearest airport while crossing mountain ridges and over flying the surrounding forest. During a wheel landing in the snow, the airplane nosed over and came to rest inverted. The forward section of the airframe, both wings spars, and the vertical stabilizer were bent. The reason for the partial power loss was undetermined.
Flight
Event TypeAccident
Event Time09:45 PST
Nearest Airport0nm
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18-150
Tail NumberN9086Y
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A4M · Reciprocating · 180
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 51 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point28 C / 25 C
Altimeter30.51 inHg
Observation Time17:54
Weather SourceWFAC