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NTSB Report
August 11, 1990 · Mooney M20C · N9236M
Lodi, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
August 11, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Lodi, CA
Aircraft
Mooney M20C
Tail Number
N9236M
Operator
Gifford Kevin H
Injuries
None
Aircraft Damage
Destroyed
NTSB Number
LAX90LA284
THE ACFT HAD DEPARTED ANOTHER APRT EARLIER THE SAME DAY. THE PLT NOTICED THE ENG OIL PRESS WAS LOW. THE PLT DIVERTED FROM HIS DESTINATION TO ANOTHER APRT. WHILE ENROUTE, THE ENG OIL PRESS GAUGE WENT TO ZERO. AFTER LANDING, THE PLT CHECKED THE ACFT ENG OIL SYSTEM FOR LEAKS. THERE WERE NONE AND THE QUANTITY OF OIL WAS CORRECT AT 7 QTS. THE PLT THEN ELECTED TO CONTINUE FLT. ABOUT 1 HR INTO THE FLT, THE ACFT PROP WENT TO LOW PITCH; 30 SECONDS LATER THE ENG LOST POWER. THE PLT LANDED THE ACFT IN A FIELD. THE ENG WAS EXAMINED AND A HOLE WAS FOUND IN THE ENG CASE. THE NO 2 PISTON ROD HAD FAILED. THE ROD EXHIBITED SIGNS OF EXCESSIVE HEAT EVIDENT OF OIL STARVATION. THE REASON FOR THE LOSS OF OIL PRESSURE COULD NOT BE DETERMINED.
NTSB Probable Cause
THE PILOT TO CONTINUE HIS FLIGHT WITH A UNRESOLVED DEFICIENCY IN THE AIRCRAFT POWERPLANT RESULTING IN TOTAL FAILURE OF THE POWERPLANT.
Full Narrative
THE ACFT HAD DEPARTED ANOTHER APRT EARLIER THE SAME DAY. THE PLT NOTICED THE ENG OIL PRESS WAS LOW. THE PLT DIVERTED FROM HIS DESTINATION TO ANOTHER APRT. WHILE ENROUTE, THE ENG OIL PRESS GAUGE WENT TO ZERO. AFTER LANDING, THE PLT CHECKED THE ACFT ENG OIL SYSTEM FOR LEAKS. THERE WERE NONE AND THE QUANTITY OF OIL WAS CORRECT AT 7 QTS. THE PLT THEN ELECTED TO CONTINUE FLT. ABOUT 1 HR INTO THE FLT, THE ACFT PROP WENT TO LOW PITCH; 30 SECONDS LATER THE ENG LOST POWER. THE PLT LANDED THE ACFT IN A FIELD. THE ENG WAS EXAMINED AND A HOLE WAS FOUND IN THE ENG CASE. THE NO 2 PISTON ROD HAD FAILED. THE ROD EXHIBITED SIGNS OF EXCESSIVE HEAT EVIDENT OF OIL STARVATION. THE REASON FOR THE LOSS OF OIL PRESSURE COULD NOT BE DETERMINED.
Flight
Event TypeAccident
Event Time12:04 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMooney M20C
Tail NumberN9236M
Aircraft CategoryAir
DamageDestroyed
OperatorGifford Kevin H
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360 · Reciprocating · 180
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 24 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 10 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point52
Altimeter29.00 inHg
Observation Time18:53
Weather SourceWFAC