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August 1, 1988 · Monnett Sonerai II · N79TG

Wisc Rapids, WI

Overview

Report Status
Preliminary report
Event Type
Accident
Date
August 1, 1988
Injury Outcomes
No injuries (1 uninjured)
Location
Wisc Rapids, WI
Aircraft
Monnett Sonerai II
Tail Number
N79TG
Operator
Bernard Fried
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI88DEP08

THE PLT RPRTD THAT DRG TAKEOFF, THE ENG LOST POWER AS THE ACFT WAS CLIMBING THRU ABOUT 200' AGL. AN EMERG LNDG WAS MADE IN THE BEST AVAILABLE AREA, WHICH WAS A GOLF COURSE ON ROLLING TERRAIN. DRG THE LNDG ROLL, THE PLT APPLIED BRAKES, BUT WAS UNABLE TO STOP BEFORE THE ACFT WENT OVER A RIDGE WITH A STEEP DECLINING SLOPE BEYOND. AS THE ACFT WENT OVER THE RIDGE (DROP-OFF), IT BECAME AIRBORNE, THEN TOUCHED DOWN HARD & WAS DAMAGED WHERE THE TERRAIN BEGAN RISING AGAIN. THE ACFT HAD BEEN SVCD WITH AUTO FUEL. THE PLT BELIEVED THE ENG HAD LOST POWER DUE TO VAPOR LOCK. ACCORDING TO AC 91-33,AUTO FUEL IS MORE SUSCEPTIBLE TO VAPOR LOCK AT ELEVATED TEMPS. THE TEMP WAS 93 DEG. NO OTHER PART MALFUNCTION OR FAILURE WAS EVIDENT.

Full Narrative

THE PLT RPRTD THAT DRG TAKEOFF, THE ENG LOST POWER AS THE ACFT WAS CLIMBING THRU ABOUT 200' AGL. AN EMERG LNDG WAS MADE IN THE BEST AVAILABLE AREA, WHICH WAS A GOLF COURSE ON ROLLING TERRAIN. DRG THE LNDG ROLL, THE PLT APPLIED BRAKES, BUT WAS UNABLE TO STOP BEFORE THE ACFT WENT OVER A RIDGE WITH A STEEP DECLINING SLOPE BEYOND. AS THE ACFT WENT OVER THE RIDGE (DROP-OFF), IT BECAME AIRBORNE, THEN TOUCHED DOWN HARD & WAS DAMAGED WHERE THE TERRAIN BEGAN RISING AGAIN. THE ACFT HAD BEEN SVCD WITH AUTO FUEL. THE PLT BELIEVED THE ENG HAD LOST POWER DUE TO VAPOR LOCK. ACCORDING TO AC 91-33,AUTO FUEL IS MORE SUSCEPTIBLE TO VAPOR LOCK AT ELEVATED TEMPS. THE TEMP WAS 93 DEG. NO OTHER PART MALFUNCTION OR FAILURE WAS EVIDENT.

Flight

Event TypeAccident
Event Time13:00 CDT
Nearest AirportAlexander Field (0nm N)
Runway29
Runway Length3771 ft
Runway Width50 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftMonnett Sonerai II
Tail NumberN79TG
Aircraft CategoryAir
DamageSubstantial
OperatorBernard Fried
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsVolkswagen · 1700 EV · Reciprocating · 60
Seats2

People & Injuries

Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 23 · Second Class

Conditions

ConditionsVMC
LightDaylight
Wind170° @ 4 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point66 F
Altimeter29.00 inHg
Observation Time17:50
Weather SourceWFAC

Appendix: Source Data