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NTSB Report
May 3, 1983 · Piper PA-28-151 · N40755
Milpitas, CA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
May 3, 1983
Injury Outcomes
No injuries (1 uninjured)
Location
Milpitas, CA
Aircraft
Piper PA-28-151
Tail Number
N40755
Operator
Mr Aircraft
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX83LA212
WHILE DESCENDING THRU 4300 FT, THE ENG LOST POWER. THE PLT MADE AN EMERGENCY LANDING ON A GULF COURSE, BUT DURING THE LANDING ROLL, THE RIGHT WING OF THE ACFT IMPACTED A POLE & WAS DAMAGED. AN EXAM REVEALED THAT THE 5/16 INCH BOLT, PN STD-847, THAT SECURED THE CRANKSHAFT GEAR TO THE AFT END OF THE CRANKSHAFT HAD BACKED OUT. THIS RESULTED IN SHEARING OF THE DOWL PIN. IN TURN, THE CRANKSHAFT COULD NOT DRIVE THE ACCESSORIES, WHICH INCLUDED THE MAGNETOS & VACUUM PUMP. THE ENG HAD OPERATED 371 HRS SINCE OVERHAUL.
Full Narrative
WHILE DESCENDING THRU 4300 FT, THE ENG LOST POWER. THE PLT MADE AN EMERGENCY LANDING ON A GULF COURSE, BUT DURING THE LANDING ROLL, THE RIGHT WING OF THE ACFT IMPACTED A POLE & WAS DAMAGED. AN EXAM REVEALED THAT THE 5/16 INCH BOLT, PN STD-847, THAT SECURED THE CRANKSHAFT GEAR TO THE AFT END OF THE CRANKSHAFT HAD BACKED OUT. THIS RESULTED IN SHEARING OF THE DOWL PIN. IN TURN, THE CRANKSHAFT COULD NOT DRIVE THE ACCESSORIES, WHICH INCLUDED THE MAGNETOS & VACUUM PUMP. THE ENG HAD OPERATED 371 HRS SINCE OVERHAUL.
Flight
Event TypeAccident
Event Time15:10 PDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-28-151
Tail NumberN40755
Aircraft CategoryAir
DamageSubstantial
OperatorMr Aircraft
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E3D · Reciprocating · 150
Seats4
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 36 · First Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility20 sm
CeilingNone
Temperature / Dew Point68 F / 0 C
Altimeter0
Weather SourcePILO