DEN83LA109

NTSB accident investigation · Beech C-50 · Nephi, UT · May 6, 1983

Accident · Minor injuriesLimited investigationFinal report
Date
May 5, 1983, 22:08 local (May 6, 1983, 05:08 UTC)
Place
Nephi, UT
Injuries
1 minor, 1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N322VBeech C-50
Weather
Instrument (IMC) · Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19830506017929A
Case key
16073

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.

Loss of engine power(total) - nonmechanicalCruise - normal
Weather condition - carburetor icing conditionsFactor
Procedures/directives - improperPilot in commandCause
Weather condition - icing conditionsFactor
Weather evaluation - inaccuratePilot in commandCause
Performance data - not understoodPilot in commandCause
Preflight briefing service - disregardedPilot in commandCause
Flight into known adverse weather - performedPilot in commandCause
Forced landingLanding - flare/touchdown
Terrain condition - high vegetationFactor

Analysis

The acft collided with rocks and sagebrush during a forced landing after the engine lost power. The acft encountered induction and airframe icing during cruise. The pilots weather briefing forecast the icing which he encountered. The briefing took place about 12 hours before departure. There is no record of another briefing prior to departure. When thepilot experienced a reduction in manifold pressure during cruise in icing conditions he suspected induction icing. The alternate air doors were frozen. When the pilot freed them there was a small banging sound in the engines. He radioed the ARTCC at salt lake city the he had icing and was 'dropping like a rock'. An emergency landing was made in a sage brush clearing. The pilot said the acft manual should be changed. 'It states that carb ice is rare and is corrected by alternate air. It does not indicate that after the ice forms it is too late to restore power'.

Aircraft

Registration
N322V
Reported as
Beech C-50
Category
Airplane
Serial number
CH-157
Airframe hours
3,800
Engine
Lycoming GO-480-F1A6, 275 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 91
Registered owner
Michael S. Robinson
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · March 5, 1983
Departed
LAS · Las Vegas, NV
Destination
SLC · Salt Lake City, UT
Flight plan
IFR

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
35
Certificate
Private
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,440 total · 65 in this make and model · 1,144 as pilot in command · 65 in the last 90 days

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
Calm
Lowest ceiling
50 ft overcast
Temperature
37 °F, dew point 37 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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