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NTSB Report
July 8, 1990 · Beech A-35 · N8663A
Santa Ynez, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 8, 1990
Injury Outcomes
No injuries (3 uninjured)
Location
Santa Ynez, CA
Aircraft
Beech A-35
Tail Number
N8663A
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
LAX90LA247
THE AIRCRAFT WAS PERFORMING 'S' TURNS ON FINAL TO ALLOW SPACING FOR A GLIDER DEPARTURE. AS THE PILOT ADDED THROTTLE THE ENGINE FAILED TO RESPOND AND THE AIRCRAFT LANDED SHORT OF THE RUNWAY IN A HILLY BRUSH COVERED AREA. THE CARBURETOR WAS FUNCTIONALLY TESTED TO MANUFACTURER'S SPECIFICATIONS, HOWEVER, IT WAS FOUND TO BE ON THE RICH SIDE. FURTHER EXAMINATION OF THE UNIT REVEALED THAT FUEL WAS LEAKING INTO THE INTAKE AIR SECTION OF THE CARBURETOR FROM A CRACKED RUBBER DIAPHRAM. ACCORDING TO BENDIX, THE CARBURETOR SHOULD BE OVERHAULED AT THE SAME TIME THE ENGINE IS OVERHAULED. DETAILED REVIEW OF THE MAINTENANCE RECORDS DISCLOSED NO EVIDENCE THAT THE CARBURETOR WAS OVERHAULED DURING THE LAST ENGINE OVERHAUL.
NTSB Probable Cause
AN ENGINE FAILURE DUE TO FUEL LEAKAGE FROM A RUPTURED DIAPHRAM IN THE CARBURETOR; FAILURE OF THE AIRCRAFT OWNER TO COMPLY WITH THE MANUFACTURER'S RECOMMENDED COMPONENT OVERHAUL INTERVALS.
Full Narrative
THE AIRCRAFT WAS PERFORMING 'S' TURNS ON FINAL TO ALLOW SPACING FOR A GLIDER DEPARTURE. AS THE PILOT ADDED THROTTLE THE ENGINE FAILED TO RESPOND AND THE AIRCRAFT LANDED SHORT OF THE RUNWAY IN A HILLY BRUSH COVERED AREA. THE CARBURETOR WAS FUNCTIONALLY TESTED TO MANUFACTURER'S SPECIFICATIONS, HOWEVER, IT WAS FOUND TO BE ON THE RICH SIDE. FURTHER EXAMINATION OF THE UNIT REVEALED THAT FUEL WAS LEAKING INTO THE INTAKE AIR SECTION OF THE CARBURETOR FROM A CRACKED RUBBER DIAPHRAM. ACCORDING TO BENDIX, THE CARBURETOR SHOULD BE OVERHAULED AT THE SAME TIME THE ENGINE IS OVERHAULED. DETAILED REVIEW OF THE MAINTENANCE RECORDS DISCLOSED NO EVIDENCE THAT THE CARBURETOR WAS OVERHAULED DURING THE LAST ENGINE OVERHAUL.
Flight
Event TypeAccident
Event Time12:40 PDT
Nearest AirportSanta Ynez (0nm N)
Runway26
Runway Length2804 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech A-35
Tail NumberN8663A
Aircraft CategoryAir
DamageDestroyed
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · E-225-8 · Reciprocating · 225
Seats4
People & Injuries
Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 77 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind90° @ 3 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO