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NTSB Report
June 19, 1992 · Stinson 108-3 · N589C
Window Rock, AZ
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 19, 1992
Injury Outcomes
No injuries (2 uninjured)
Location
Window Rock, AZ
Aircraft
Stinson 108-3
Tail Number
N589C
Operator
Stone Daniel K
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX92LA255
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.
NTSB 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.
Full Narrative
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.
Flight
Event TypeAccident
Event Time13:30 MST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftStinson 108-3
Tail NumberN589C
Aircraft CategoryAir
DamageSubstantial
OperatorStone Daniel K
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsFranklin · 6A4-165-83 · Reciprocating · 166
Seats4
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 38 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind200° @ 10 kt
Visibility25 sm
CeilingBroken clouds 18000 ft
Temperature / Dew Point25 C
Altimeter30.00 inHg
Observation Time20:50
Weather SourceWFAC