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NTSB Report
July 25, 1991 · Grimm Cavalier SA102.5 Cavalier S · N413P
Mcalester, OK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 25, 1991
Injury Outcomes
2 injuries (2 fatalities)
Location
Mcalester, OK
Aircraft
Grimm Cavalier SA102.5 Cavalier S
Tail Number
N413P
Operator
Grimm Larry W
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
FTW91DPJ03
DURING A DAYLIGHT FLIGHT FROM ENNIS, OKLAHOMA, TO OSHKOSH, WISCONSIN, THE NON-INSTRUMENT RATED PILOT TRANSITIONED FROM VFR TO IFR FLIGHT. THE PRIVATE PILOT WAS FULLY AWARE OF THE FORECASTED INSTRUMENT CONDITIONS AND EXPRESSED HIS CONCERN AS TO THE WEATHER. HE DISCUSSED THE WEATHER WITH OTHER PILOTS, AND THEY RECOMMENDED THAT HE NOT PROCEED WITH THE FLIGHT UNTIL THE WEATHER FRONT HAD PASSED. THE AIRPLANE IMPACTED THE GROUND IN A LEVEL ATTITUDE WITH NO FORWARD MOVEMENT AND WITH EVIDENCE OF SOME ROTATION.
NTSB Probable Cause
THE PILOT'S ATTEMPTED FLIGHT INTO IMC AND HIS SUBSEQUENT LOSS OF CONTROL DUE TO SPATIAL DISORIENTATION.
Full Narrative
DURING A DAYLIGHT FLIGHT FROM ENNIS, OKLAHOMA, TO OSHKOSH, WISCONSIN, THE NON-INSTRUMENT RATED PILOT TRANSITIONED FROM VFR TO IFR FLIGHT. THE PRIVATE PILOT WAS FULLY AWARE OF THE FORECASTED INSTRUMENT CONDITIONS AND EXPRESSED HIS CONCERN AS TO THE WEATHER. HE DISCUSSED THE WEATHER WITH OTHER PILOTS, AND THEY RECOMMENDED THAT HE NOT PROCEED WITH THE FLIGHT UNTIL THE WEATHER FRONT HAD PASSED. THE AIRPLANE IMPACTED THE GROUND IN A LEVEL ATTITUDE WITH NO FORWARD MOVEMENT AND WITH EVIDENCE OF SOME ROTATION.
Flight
Event TypeAccident
Event Time12:00 CDT
Nearest AirportMcalester (11nm NNW)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftGrimm Cavalier SA102.5 Cavalier S
Tail NumberN413P
Aircraft CategoryAir
DamageDestroyed
OperatorGrimm Larry W
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-290-D · Reciprocating · 125
Seats2
People & Injuries
Injury Summary2 injuries (2 fatalities)
Fatal2
Serious0
Minor0
Uninjured0
Total2
Crew 1Age 46 · Third Class
Conditions
ConditionsIMC
LightDaylight
Wind150° @ 8 kt
Visibility6 sm
CeilingBroken clouds 900 ft
Altimeter30.00 inHg
Observation Time16:50
Weather SourceWFAC