SEA86LA235

NTSB accident investigation · Cessna 182D · Stibnite, ID · August 30, 1986

Accident · FatalLimited investigationFinal report
Date
August 30, 1986, 11:50 local (17:50 UTC)
Place
Stibnite, ID
Injuries
2 fatal, 3 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
N8778XCessna 182D
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860830043199A
Case key
40493

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

On this page

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 objectManeuvering - turn to reverse direction
Planning/decision - improperPilot in commandCause
Terrain condition - mountainous/hillyFactor
Terrain condition - risingFactor
Weather condition - unfavorable windFactor
Weather condition - downdraftFactor
Weather condition - high density altitudeFactor
Object - tree(s)Factor
Proper climb rate - not possible

Analysis

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.

Aircraft

Registration
N8778X
Reported as
Cessna 182D
Category
Airplane
Serial number
18253178
Airframe hours
3,002
Engine
Continental O-470-L, 230 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
Alan T. Bermensolo
Registered owner
K & C Flying
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 3, 1986 · 11 hours before
Departed
S81
Destination
U79 · Chamberlain Bas, ID
Airport
Indian Creek (Usfs), runway 4, 5,000 × 100 ft, gravel

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
32
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
380 total · 199 in this make and model · 331 as pilot in command · 36 in the last 90 days · 3 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 7 knots
Visibility
25 statute miles
Lowest ceiling
10,000 ft broken
Temperature
64 °F, dew point 55 °F
Observed at
SMN, 55 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.