Aircraft Accident/Incident Report

Scoffield, Utah 84501
Saturday, April 11, 1987 9:30 MDT

NTSB Narrative Summary Released at Completion of Accident

THE PLT AND HIS BROTHER WERE ON A LONG CROSS COUNTRY FLT, THROUGH MOUNTAINOUS TERRAIN. AFTER ONE HOUR OF FLT AND WHILE FLYING AT 8,000 FEET THE PLT NOTICED A CHANGE IN ENGINE NOISE AND THE ACFT HAD A PARTIAL POWER LOSS. THE PLT ELECTED TO AUTOROTATE TO A SNOW COVERED SURFACE. THE TOUCHDOWN WAS ON A STEEP SLOPE AND THE HELICOPTER SLID DOWNSLOPE AND STRUCK TREES. POST ACCIDENT INVESTIGATION SHOWED ONE MAGNETO NOT OPERATING PROPERLY.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 4/11/1987
Event Day of the Week Saturday
Time of Event 930
Event Time Zone Mountain Daylight Time
Event City SCOFFIELD
Event State UTAH
Event Country --
Zipcode of the event site 84501
Event Date Year 1987
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport
Event Location Nearest Airport ID
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 17
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 683
NTSB Notification Source --
NTSB Notification Date Apr 11 1987 12:00AM
NTSB Notification Time 1445
Fiche Number and/or location -used to find docket information 33884
Date of most recent change to record Dec 13 2000 2:14PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9676F
NTSB Number DEN87LA094
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed VFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name HUGHES
Aircraft Model 269C
Aircraft Series Identifier 269C
Aircraft Serial Number 910124
Certified Max Gross Weight 1670
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 31 1986 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name WASATCH HELICOPTER
Aircraft Owner Street Address P.O. BOX 435
Aircraft Owner City BOUNTIFUL
Aircraft Owner State UT
Aircraft Owner Country
Aircraft Owner Zipcode 84010
Operator is an individual? --
Operator Name WASATCH HELICOPTERS
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P. O. BOX 435
Operator City BOUNTIFUL
Operator State UT
Operator Country
Operator Zip code 84010
Operator Code PS67
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation External Load
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code BTF
Departure City BOUNTIFUL
Departure State UT
Departure Country
Departure Time 815
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code 69V
Destination City HUNTINGTON
Destination State UT
Destination Country
Specific Phase of Flight Landing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --