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NTSB Report
August 30, 1986 · Cessna 182D · N8778X
Stibnite, ID
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 30, 1986
Injury Outcomes
5 injuries (2 fatalities, 3 serious injuries)
Location
Stibnite, ID
Aircraft
Cessna 182D
Tail Number
N8778X
Operator
Alan T Bermensolo
Injuries
Fatal
Aircraft Damage
Destroyed
NTSB Number
SEA86LA235
AFTER TAKING OFF IN MOUNTAINOUS TERRAIN, THE PILOT PREMATURELY TURNED ON COURSE TO A NORTHERLY HEADING, INTENDING TO CROSS OVER A RIDGE LINE. SHORTLY AFTER THE TURN, AND WHILE FLYING UP A DRAINAGE AREA TOWARDS RISING TERRAIN, HE ENCOUNTERED A DOWNDRAFT CONDITION WHICH REDUCED THE AIRCRAFT'S CLIMB PERFORMANCE. ITS CLIMB PERFORMANCE HAD ALREADY BEEN AGGRAVATED BY HIGHER THAN USUAL DENSITY ALTITUDE CONDITIONS. SUBSEQUENTLY, THE AIRCRAFT COLLIDED WITH TREES WHILE THE PILOT WAS ATTEMPTING TO REVERSE COURSE.
Full Narrative
AFTER TAKING OFF IN MOUNTAINOUS TERRAIN, THE PILOT PREMATURELY TURNED ON COURSE TO A NORTHERLY HEADING, INTENDING TO CROSS OVER A RIDGE LINE. SHORTLY AFTER THE TURN, AND WHILE FLYING UP A DRAINAGE AREA TOWARDS RISING TERRAIN, HE ENCOUNTERED A DOWNDRAFT CONDITION WHICH REDUCED THE AIRCRAFT'S CLIMB PERFORMANCE. ITS CLIMB PERFORMANCE HAD ALREADY BEEN AGGRAVATED BY HIGHER THAN USUAL DENSITY ALTITUDE CONDITIONS. SUBSEQUENTLY, THE AIRCRAFT COLLIDED WITH TREES WHILE THE PILOT WAS ATTEMPTING TO REVERSE COURSE.
Flight
Event TypeAccident
Event Time11:50 MDT
Nearest AirportIndian Creek (Usfs) (0nm N)
Runway4
Runway Length5000 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 182D
Tail NumberN8778X
Aircraft CategoryAir
DamageDestroyed
OperatorAlan T Bermensolo
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-470-L · Reciprocating · 230
Seats4
People & Injuries
Injury Summary5 injuries (2 fatalities, 3 serious injuries)
Fatal2
Serious3
Minor0
Uninjured0
Total5
Crew 1Age 32 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind360° @ 7 kt
Visibility25 sm
CeilingBroken clouds 10000 ft
Temperature / Dew Point64 F / 55
Altimeter0
Observation Time17:50
Weather SourceWFAC