LAX92LA255

NTSB accident investigation · Stinson 108-3 · Window Rock, AZ · June 19, 1992

Accident · No injuriesLimited investigationFinal report
Date
June 19, 1992, 13:30 local (20:30 UTC)
Place
Window Rock, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Uncontrolled descent
Aircraft
N589CStinson 108-3
Weather
Visual (VMC) · Day
Status
Completed · report September 28, 1993
Report
Approved by Office Director
FAA report
19920619025589A
Case key
27655

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The failure of the pilot to calculate the aircraft's performance data and perform a weather evauluation. The existing high density altitude was a factor in the accident.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterDescent - uncontrolled
Weather condition - high density altitudeFactor
Weather condition - downdraftFactor
Performance data - not usedPilot in commandCause
Weather evaluation - not performedPilot in commandCause

Analysis

After receiving his preflight weather briefing the pilot took off in his 166 horsepower, heavily loaded airplane, from an airport with a density altitude of 9,988 feet mean sea level. There is no evidence that the pilot calculated the density altitude or the aircraft's performance prior to the takeoff. As the aircraft climbed through 400 feet above the ground it encountered a down draft and began to descend. The aircraft then began to climb again and the pilot entered a turn to return to the airport. During the turn, the aircraft entered a descent and collided with the terrain.

Aircraft

Registration
N589C
Reported as
Stinson 108-3
Category
Airplane
Serial number
108-3589
Engine
Franklin 6A4-165-83, 166 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Stone, Daniel K.
Registered owner
Stone, Daniel K.
Airworthiness certificate
Standard, Normal
Last inspection
Unknown · January 2, 2000
Departed
P34
Destination
OUF · Denver, CO

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
38
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane, Helicopter
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,300 total

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 10 knots
Visibility
25 statute miles
Lowest ceiling
18,000 ft broken
Temperature
86 °F, dew point 25 °F
Altimeter
30.00 inHg
Observed at
GUP, 15 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.