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NTSB Report

September 10, 1990 · Cessna 170A · N9157A

Elk Mountain, WY

Overview

Report Status

Probable Cause

Event Type

Accident

Date

September 10, 1990

Injury Outcomes

2 injuries (2 serious injuries)

Location

Elk Mountain, WY

Aircraft

Cessna 170A

Tail Number

N9157A

Operator

Lewis R Johnson

Injuries

Serious

Aircraft Damage

Substantial

NTSB Number

SEA90LA178

A WITNESS OBSERVED THE CESSNA 170A MAKE A LOW PASS OVER HIM. HE SAID IT STALLED AND ENTERED A NOSE-DOWN ATTITUDE WITH THE WINGS WAGGING. HE SAID THAT THE AIRPLANE HAD LEVELED JUST BEFORE IMPACT. THE AIRCRAFT WAS DESTROYED BY GROUND IMPACT AND THE TWO OCCUPANTS SUSTAINED SERIOUS INJURIES.

NTSB Probable Cause

THE PILOT'S FAILURE TO MAINTAIN FLYING SPEED WHILE AT AN ALTITUDE THAT DID NOT PROVIDE ADEQUATE TERRAIN CLEARANCE FOR A SAFE STALL RECOVERY.

Full Narrative

A WITNESS OBSERVED THE CESSNA 170A MAKE A LOW PASS OVER HIM. HE SAID IT STALLED AND ENTERED A NOSE-DOWN ATTITUDE WITH THE WINGS WAGGING. HE SAID THAT THE AIRPLANE HAD LEVELED JUST BEFORE IMPACT. THE AIRCRAFT WAS DESTROYED BY GROUND IMPACT AND THE TWO OCCUPANTS SUSTAINED SERIOUS INJURIES.

Flight

Event TypeAccident

Event Time08:10 MDT

Nearest Airport0nm N

Runway0

Flight Plan FiledNone

Aircraft FireNo

Aircraft ExplosionNo

Aircraft

AircraftCessna 170A

Tail NumberN9157A

Aircraft CategoryAir

DamageSubstantial

OperatorLewis R Johnson

Operating RulePart 91

Engines1

Engine TypeReciprocating

Engine DetailsLycoming · O-360 · Reciprocating · 180

Seats4

People & Injuries

Injury Summary2 injuries (2 serious injuries)

Fatal0

Serious2

Minor0

Uninjured0

Total2

Crew 1Age 51 · Third Class

Conditions

ConditionsVMC

LightDaylight

WindCalm

Visibility60 sm

CeilingNone

Temperature / Dew Point0 C / 0 C

Altimeter0

Observation Time14:15

Weather SourceWFAC

500 – Data service is offline

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September 10, 1990 · Cessna 170A · N9157A

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