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NTSB Report
October 6, 1990 · Waco RNF · N11270
Lampasas, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 6, 1990
Injury Outcomes
2 injuries (2 minor injuries)
Location
Lampasas, TX
Aircraft
Waco RNF
Tail Number
N11270
Operator
Mccluney Cliff A
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
FTW91LA004
THE ENGINE LOST PARTIAL POWER AS THE PILOT TURNED CROSSWIND AFTER TAKEOFF, FOLLOWED B A COMPLETE POWER LOSS DURING THE TURN TO DOWNWIND. THE PILOT SET UP FOR A FORCED LANDING TO THE BEST AVAILABLE FIELD WHICH WAS COVERED WITH BRUSH AND TREES. JUST PRIOR TO TOUCHDOWN, THE ENGINE HAD A MOMENTARY SURGE OF POWER AND THEN QUIT AGAIN. DURING THE LANDING ROLL, THE LEFT MAIN LANDING GEAR COLLAPSED AND THE AIRPLANE NOSED OVER. INVESTIGATION REVEALED THAT THE NO. 6 CYLINDER INTAKE VALVE SPRING WAS BROKEN AND THE CYLINDER WAS RUNNING COLD. ADDITIONALLY, PARTICULATE CONTAMINATION WAS FOUND IN THE FUEL SYSTEM.
NTSB Probable Cause
THE FAILURE OF A CYLINDER INTAKE VALVE SPRING.
Full Narrative
THE ENGINE LOST PARTIAL POWER AS THE PILOT TURNED CROSSWIND AFTER TAKEOFF, FOLLOWED B A COMPLETE POWER LOSS DURING THE TURN TO DOWNWIND. THE PILOT SET UP FOR A FORCED LANDING TO THE BEST AVAILABLE FIELD WHICH WAS COVERED WITH BRUSH AND TREES. JUST PRIOR TO TOUCHDOWN, THE ENGINE HAD A MOMENTARY SURGE OF POWER AND THEN QUIT AGAIN. DURING THE LANDING ROLL, THE LEFT MAIN LANDING GEAR COLLAPSED AND THE AIRPLANE NOSED OVER. INVESTIGATION REVEALED THAT THE NO. 6 CYLINDER INTAKE VALVE SPRING WAS BROKEN AND THE CYLINDER WAS RUNNING COLD. ADDITIONALLY, PARTICULATE CONTAMINATION WAS FOUND IN THE FUEL SYSTEM.
Flight
Event TypeAccident
Event Time11:05 CDT
Nearest AirportLampasas Muni. (0nm N)
Runway16
Runway Length3810 ft
Runway Width60 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftWaco RNF
Tail NumberN11270
Aircraft CategoryAir
DamageSubstantial
OperatorMccluney Cliff A
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsWarner · SS50 · Reciprocating · 145
Seats3
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 56 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind180° @ 15 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter30.00 inHg
Weather SourcePILO