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NTSB Report
July 20, 1985 · Piper PA-18-95 · N5777D
Stowe, VT
Overview
Report Status
Preliminary report
Event Type
Accident
Date
July 20, 1985
Injury Outcomes
No injuries (1 uninjured)
Location
Stowe, VT
Aircraft
Piper PA-18-95
Tail Number
N5777D
Injuries
None
Aircraft Damage
Substantial
NTSB Number
NYC85LA186
DURING CRUISE FLT, THE PLT HEARD A LOUD KNOCKING COMING FROM THE ENG AND A DECREASE IN OIL PRESSURE. DURING THE LANDING IN A FLD, THE LANDING GEAR COLLAPSED AND THE ACFT GROUND LOOPED. EXAMINATION OF THE ENG DISCLOSED THAT THE HYDRAULIC LIFTERS OF THREE OF THE FOUR CYLINDERS HAD FAILED. THE CORRESPONDING INTAKE AND EXHAUST VALVES WERE NOT OPENING PROPERLY DURING ENG OPERATION.
Full Narrative
DURING CRUISE FLT, THE PLT HEARD A LOUD KNOCKING COMING FROM THE ENG AND A DECREASE IN OIL PRESSURE. DURING THE LANDING IN A FLD, THE LANDING GEAR COLLAPSED AND THE ACFT GROUND LOOPED. EXAMINATION OF THE ENG DISCLOSED THAT THE HYDRAULIC LIFTERS OF THREE OF THE FOUR CYLINDERS HAD FAILED. THE CORRESPONDING INTAKE AND EXHAUST VALVES WERE NOT OPENING PROPERLY DURING ENG OPERATION.
Flight
Event TypeAccident
Event Time09:57 EDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18-95
Tail NumberN5777D
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C-90-12F · Reciprocating · 90
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 46 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind320° @ 12 kt
Visibility7 sm
CeilingBroken clouds 4500 ft
Temperature / Dew Point61 F
Altimeter29.00 inHg
Weather SourceWIT