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NTSB Report
August 8, 1987 · Beech C23 · N24651
Mammoth Lakes, CA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 8, 1987
Injury Outcomes
No injuries (2 uninjured)
Location
Mammoth Lakes, CA
Aircraft
Beech C23
Tail Number
N24651
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX87LA299
DURING A PLEASURE FLIGHT, JUST AFTER TAKE-OFF, THE ENGINE EXPERIENCED A PARTIAL LOSS OF POWER WHEN THE PLT POSITIONED THE CARB HEAT CONTROL TO FULL COLD. THE PLT STATED THAT IN ORDER TO OBTAIN FULL POWER, DURING THE RUNUP HE WOULD POSITION THE CARB HEAT TO ONE EIGHTH HOT. INSPECTION AND A FLOW TEST OF THE CARB REVEALED THAT THE CARB WOULD SUSTAIN ENGINE OPERATION. THERE WERE NO MECHANICAL FAILURES OR MALFUNCTIONS REPORTED. THE TEMPERATURE RECORDED AT MAMMOTH LAKES AIRPORT 13 MINUTES AFTER THE ACCIDENT WAS 82 DEGREES. THE DENSITY ALTITUDE WAS 10,300 FEET. THE DEW POINT WAS NOT RECORDED THEREFORE THE PROBABILITY OF CARBURETOR ICING COULD NOT BE DETERMINED.
Full Narrative
DURING A PLEASURE FLIGHT, JUST AFTER TAKE-OFF, THE ENGINE EXPERIENCED A PARTIAL LOSS OF POWER WHEN THE PLT POSITIONED THE CARB HEAT CONTROL TO FULL COLD. THE PLT STATED THAT IN ORDER TO OBTAIN FULL POWER, DURING THE RUNUP HE WOULD POSITION THE CARB HEAT TO ONE EIGHTH HOT. INSPECTION AND A FLOW TEST OF THE CARB REVEALED THAT THE CARB WOULD SUSTAIN ENGINE OPERATION. THERE WERE NO MECHANICAL FAILURES OR MALFUNCTIONS REPORTED. THE TEMPERATURE RECORDED AT MAMMOTH LAKES AIRPORT 13 MINUTES AFTER THE ACCIDENT WAS 82 DEGREES. THE DENSITY ALTITUDE WAS 10,300 FEET. THE DEW POINT WAS NOT RECORDED THEREFORE THE PROBABILITY OF CARBURETOR ICING COULD NOT BE DETERMINED.
Flight
Event TypeAccident
Event Time14:35 PDT
Nearest AirportMammoth Lakes (1nm E)
Runway9
Runway Length7000 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBeech C23
Tail NumberN24651
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A4G · Reciprocating · 180
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 61 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind120° @ 10 kt, gusting 20 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter30.00 inHg
Observation Time21:48
Weather SourceWFAC