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NTSB Report
September 26, 1990 · Burkhart Grob 109A · N912G
Waukesha, WI
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 26, 1990
Injury Outcomes
No injuries (1 uninjured, 1 unknown outcome)
Location
Waukesha, WI
Aircraft
Burkhart Grob 109A
Tail Number
N912G
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI90LA274
THE STUDENT PILOT REPORTED THAT HE WAS LANDING TO THE NORTH AT AN UNCONTROLLED AIRPORT WHEN THE LEFT WING OF THE MOTOR GLIDER AIRPLANE HE WAS FLYING STRUCK A TRACTOR TYPE LAWM MOWER. HE SAID THAT WHEN HE INITIALLY SAW THE MOWER IT WAS ABOUT 80 FEET FROM THE RUNWAY. THE NEXT TIME THAT HE SAW IT, IT WAS APPROXIMATELY 3 FEET FROM THE RUNWAY'S LEFT EDGE. THE OPERATOR OF THE MOWER SAID THAT HE WAS DRIVING THE MOWER ON THE WEST SIDE OF THE RUNWAY WITH HIS BACK TO THE APPROACHING AIRPLANE. HE DID NOT SEE OR HEAR THE AIRPLANE UNTIL IT HIT THE MOWER.
NTSB Probable Cause
THE PILOT'S FAILURE TO MAINTAIN ADEQUATE CLEARANCE AND VISUAL LOOKOUT FOR THE MOVING TRACTOR.
Full Narrative
THE STUDENT PILOT REPORTED THAT HE WAS LANDING TO THE NORTH AT AN UNCONTROLLED AIRPORT WHEN THE LEFT WING OF THE MOTOR GLIDER AIRPLANE HE WAS FLYING STRUCK A TRACTOR TYPE LAWM MOWER. HE SAID THAT WHEN HE INITIALLY SAW THE MOWER IT WAS ABOUT 80 FEET FROM THE RUNWAY. THE NEXT TIME THAT HE SAW IT, IT WAS APPROXIMATELY 3 FEET FROM THE RUNWAY'S LEFT EDGE. THE OPERATOR OF THE MOWER SAID THAT HE WAS DRIVING THE MOWER ON THE WEST SIDE OF THE RUNWAY WITH HIS BACK TO THE APPROACHING AIRPLANE. HE DID NOT SEE OR HEAR THE AIRPLANE UNTIL IT HIT THE MOWER.
Flight
Event TypeAccident
Event Time15:00 CDT
Nearest AirportCapital Drive (0nm N)
Runway3
Runway Length3500 ft
Runway Width45 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftBurkhart Grob 109A
Tail NumberN912G
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLimbach · L2000EB1M · Reciprocating · 80
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured, 1 unknown outcome)
Fatal0
Serious0
Minor0
Uninjured1
Total2
Crew 1Age 41 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind130° @ 8 kt
Visibility8 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Weather SourcePILO