Aircraft Accident/Incident Report

Winnemucca, Nevada 89445
Sunday, July 26, 1998 13:35 PDT

NTSB Narrative Summary Released at Completion of Accident

The airplane had been on a cross-country flight, which was terminating at the accident airport. The airplane had undergone an annual inspection 3 weeks prior to the accident with no discrepancies noted. After reaching the accident airport environment, the pilot retarded the throttle and noted the airspeed was 120 knots with a loss of manifold pressure. The engine continued to run, but was not producing power. The landing gear is self-activating, and when the airplane slows below 105 knots indicated and the throttle is less than half full, the landing gear will automatically extend. A safety mechanism is in place, so if the throttle is full forward and the airspeed drops below 105 knots, the gear will not extend. The pilot contacted the tower to inform them of her situation, and that she would be able to make the airport with no further problems. Simultaneously, the airspeed fell below 105 knots and the landing gear extended with the throttle in the full forward position. When the airspeed fell below 80 knots, the pilot knew she was not going to clear the railroad tracks and power lines. She made a shallow left turn to fly underneath the power lines and attempted a forced landing on a road. Examination of the airplane revealed that the throttle cable rod end had separated from the throttle body attach point disconnecting the linkage between the throttle and engine. It was noted that the cotter key and jam nut were missing from the assembly and were unable to be located. Further investigation revealed that the throttle cable assembly had been replaced 7 months prior to the accident. It was also noted that the assembly was not from the manufacturer, but is widely used in the industry. The manufacturer reported that they do not authorize any substitutions of their parts.

NTSB Probable Cause Narrative

Loss of engine power due to a missing cotter key and jam nut, the use of an improper nonapproved part by other maintenance personnel, and failure to safety the installation which subsequently lead to a throttle/carburetor linkage disconnect.

Event Information

Type of Event Accident
Event Date 7/26/1998
Event Day of the Week Sunday
Time of Event 1335
Event Time Zone Pacific Daylight Time
Event City WINNEMUCCA
Event State NEVADA
Event Country --
Zipcode of the event site 89445
Event Date Year 1998
Event Date Month 7
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1356 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 320
Weather Observation Facility ID WMC
Elevation of weather observation facility 4304
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 34
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 40
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None 1
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1834
NTSB Notification Source --
NTSB Notification Date Jul 26 1998 12:00AM
NTSB Notification Time 1615
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:37AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N14692
NTSB Number LAX98LA244
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Bellanca
Aircraft Model BL-17
Aircraft Series Identifier BL-17
Aircraft Serial Number 74-31093
Certified Max Gross Weight 3325
Aircraft Category Airplane
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jun 2 1998 12:00AM
Airframe hours since last inspection 13
Airframe Hours --
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BEN F. MORROW
Aircraft Owner Street Address 4715 POGONIP DR.
Aircraft Owner City WINNEMUCCA
Aircraft Owner State NV
Aircraft Owner Country
Aircraft Owner Zipcode 89445
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code
Owner has at least one certificate None
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
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 BOI
Departure City BOISE
Departure State ID
Departure Country
Departure Time 1330
Departure Time Zone MST
Destination Same as Local Flt crash at destination city
Destination Airport Code WMC
Destination City
Destination State
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --