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NTSB Report
June 20, 2012 · Dosser Dale A Blade 582 · N907AD
Two Rivers, AK
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
June 20, 2012
Injury Outcomes
No injuries (1 uninjured)
Location
Two Rivers, AK
Aircraft
Dosser Dale A Blade 582
Tail Number
N907AD
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC12CA059
The pilot reported that the airplane was in level cruise flight when the engine began to run rough and lose power, followed by a complete loss of engine power. He made a forced landing on a mountain ridge. During the forced landing, the nose wheel encountered rough terrain and collapsed rearward, which resulted in substantial damage to the fuselage. Postaccident examination revealed that the engine’s mixture control malfunctioned, which resulted in fouled spark plugs.
NTSB Probable Cause
The total loss of engine power during cruise flight due to fouled spark plugs, which resulted from a stuck mixture control.
Full Narrative
The pilot reported that while in level cruise flight the engine began to run rough and lose power, followed by a complete loss of engine power. He made a forced landing to a trail on a mountain ridge. During the forced landing, the nose wheel encountered rough terrain and collapsed rearward. The airplane sustained substantial damage to the fuselage. A postaccident examination by the pilot, revealed the mixture control stuck in the full rich position, which fouled the spark plugs.
Flight
Event TypeAccident
Event Time01:30 AKDT
Nearest Airport0nm
Flight Plan FiledUnknown
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftDosser Dale A Blade 582
Tail NumberN907AD
Aircraft CategoryWsft
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsRotax · 582DCDI · Reciprocating · 65
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 24 · Sprt · None
Conditions
ConditionsVMC
LightDusk
WindCalm
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO