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NTSB Report
March 9, 1992 · Grumman G-164A · N9828
Valley Mills, TX
Overview
Report Status
Probable Cause
Event Type
Accident
Date
March 9, 1992
Injury Outcomes
1 injury (1 minor injury)
Location
Valley Mills, TX
Aircraft
Grumman G-164A
Tail Number
N9828
Operator
Don E Lowe
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
FTW92LA085
DURING A DESCENT FOR AERIAL APPLICATION OF FERTILIZER ON A WHEAT FIELD, THE ENGINE LOST POWER AND THE PILOT MADE A FORCED LANDING. DURING THE LANDING ROLL IN THE WET FIELD THE AIRPLANE NOSED OVER. A REVIEW OF THE MAINTENANCE RECORDS REVEALED THAT THE ENGINE WAS APPROVED FOR AUTOMOTIVE FUEL. AN ENGINE TEARDOWN WAS CONDUCTED. SPARK PLUGS INSTALLED ON THE BACK SIDE OF THE CYLINDERS WERE NOT APPROVED BY THE ENGINE MANUFACTURER. THE PLUGS WERE CORRODED AND FOULED. CARBON DEPOSITS WERE FOUND IN THE OIL. THE INTAKE MANIFOLD, THE VALVES, AND THE TOPS OF THE PISTONS CONTAINED CARBON DEPOSITS. THE MANUFACTURER RECOMMENDED ENGINE OVERHAUL IS BETWEEN 600 AND 1000 HOURS FOR THIS ENGINE. EIGHT HUNDRED AND FORTY SEVEN HOURS OF USE HAD OCCURRED WITH THIS ENGINE SINCE THE LAST OVERHAUL.
NTSB Probable Cause
POWER LOSS DUE INADEQUATE MAINTENANCE AND THE RESULTANT MULTIPLE MAINTENANCE DISCREPANCIES. A FACTOR WAS THE WET TERRAIN.
Full Narrative
DURING A DESCENT FOR AERIAL APPLICATION OF FERTILIZER ON A WHEAT FIELD, THE ENGINE LOST POWER AND THE PILOT MADE A FORCED LANDING. DURING THE LANDING ROLL IN THE WET FIELD THE AIRPLANE NOSED OVER. A REVIEW OF THE MAINTENANCE RECORDS REVEALED THAT THE ENGINE WAS APPROVED FOR AUTOMOTIVE FUEL. AN ENGINE TEARDOWN WAS CONDUCTED. SPARK PLUGS INSTALLED ON THE BACK SIDE OF THE CYLINDERS WERE NOT APPROVED BY THE ENGINE MANUFACTURER. THE PLUGS WERE CORRODED AND FOULED. CARBON DEPOSITS WERE FOUND IN THE OIL. THE INTAKE MANIFOLD, THE VALVES, AND THE TOPS OF THE PISTONS CONTAINED CARBON DEPOSITS. THE MANUFACTURER RECOMMENDED ENGINE OVERHAUL IS BETWEEN 600 AND 1000 HOURS FOR THIS ENGINE. EIGHT HUNDRED AND FORTY SEVEN HOURS OF USE HAD OCCURRED WITH THIS ENGINE SINCE THE LAST OVERHAUL.
Flight
Event TypeAccident
Event Time15:00 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrumman G-164A
Tail NumberN9828
Aircraft CategoryAir
DamageSubstantial
OperatorDon E Lowe
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R-985 · Reciprocating · 450
Seats1
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 54 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind320° @ 9 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point48
Altimeter29.00 inHg
Observation Time20:54
Weather SourceWFAC