SEA85LA194

NTSB accident investigation · Cessna 150F · Pocatello, ID · August 11, 1985

Accident · No injuriesLimited investigationFinal report
Date
August 10, 1985, 21:28 local (Aug 11, 1985, 03:28 UTC)
Place
Pocatello, ID
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N8339GCessna 150F
Weather
Visual (VMC) · Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19850810044749A
Case key
40223

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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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.

Loss of engine power(total) - nonmechanicalDescent - normal
Fuel system,carburetor - iceCause
Carburetor heat - not understoodPilot in commandCause
QualificationFlight instructor(on ground)Factor
Forced landingDescent - emergency
In flight collision with objectApproach - vfr pattern - final approach
Object - fenceFactor
Light condition - dark nightFactor
Nose overLanding - roll
Terrain condition - rough/unevenFactor

Analysis

Upon arrival in the vicinity of his destination the plt commenced a reduced pwr descent while in conditions which were conducive to carburetor iceing. During the descent the plt applied carburetor heat with a resultant drop in RPM and, apprehensive of this condition, returned the carburetor heat to 'off'. A total pwr loss followed shortly thereafter. The plt then maneuvered the acft to a forced landing in an agricultural fld under conditions of darkness. During the apch the acft struck a fence post and came to rest inverted. The plt subsequently reported that he believed that carburetor heat was only necessary during cold weather operations.

Aircraft

Registration
N8339G
Reported as
Cessna 150F
Category
Airplane
Serial number
15062439
Airframe hours
34,094
Engine
Continental O-200-A, 100 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Richard Kirkham
Registered owner
Recycle Contractors
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · March 24, 1984 · 11 hours before
Departed
BTF · Bountiful, UT
Destination
PIH · Pocatello, ID

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
29
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Expired
Seat
Left
Flight hours
150 total · 101 in this make and model · 127 as pilot in command · 9 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
220° at 18 knots
Visibility
20 statute miles
Lowest ceiling
8,000 ft broken
Temperature
63 °F, dew point 36 °F
Altimeter
29.00 inHg
Observed at
PIH, 3 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.