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Aviation safety reports, made easier to study

NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.

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NTSB Report

July 14, 1991 · Cessna 172N · N6521J

Mariposa, CA

Overview

Report Status
Probable Cause
Event Type
Accident
Date
July 14, 1991
Injury Outcomes
No injuries (4 uninjured)
Location
Mariposa, CA
Aircraft
Cessna 172N
Tail Number
N6521J
Operator
West Valley Flying Club
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX91LA312

UPON ARRIVING AT HIS DESTINATION ARPT THE PILOT LANDED ON A DOWN SLOPING RWY. THE ACFT RAN OFF THE DEPARTURE END OF THE RUNWAY AND COLLIDED WITH THE TERRAIN.

NTSB Probable Cause

THE PILOT MISJUDGING HIS PLANNED APPROACH. A DOWN-SLOPING RUNWAY SURFACE WAS A FACTOR IN THE ACCIDENT.

Full Narrative

UPON ARRIVING AT HIS DESTINATION ARPT THE PILOT LANDED ON A DOWN SLOPING RWY. THE ACFT RAN OFF THE DEPARTURE END OF THE RUNWAY AND COLLIDED WITH THE TERRAIN.

Flight

Event TypeAccident
Event Time13:18 PDT
Nearest AirportMariposa Yosemite (0nm)
Runway8
Runway Length3310 ft
Runway Width50 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftCessna 172N
Tail NumberN6521J
Aircraft CategoryAir
DamageSubstantial
OperatorWest Valley Flying Club
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-H2AD · Reciprocating · 160
Seats4

People & Injuries

Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 28 · First Class

Conditions

ConditionsVMC
LightDaylight
Wind10° @ 9 kt
Visibility40 sm
CeilingNone
Temperature / Dew Point46
Altimeter29.00 inHg

Appendix: Source Data