Aircraft Accident/Incident Report

Mountain City, Nevada 89831
Wednesday, August 31, 2005 10:50 MDT

NTSB Narrative Summary Released at Completion of Accident

The airplane impacted trees and terrain while presumably maneuvering toward a rapidly rising mountain ridgeline. The pilot was last seen refueling his airplane at the departure airport. After failing to arrive at his intended destination, an Alert Notice (ALNOT) was issued and search efforts were initiated. There were no air traffic control services rendered to the pilot and no radar data was available for the accident flight. The wreckage was located almost 2 months after the accident, with the pilot and passenger still on board. The airplane came to rest at the base of a stand of trees following a nose down, near vertical descent profile, which resulted in the aft crushing of the cockpit/cabin area. A pine tree, measuring about 8 inches in circumference, was located underneath and adjacent to the wreckage, and was cut into 36-inch logs, indicating an operative engine/rotating propeller. Plotting of the accident site on a topographic map indicated that the wreckage was located about 400 feet below a 9,000- to 9,300-foot ridgeline. The wreckage came to rest below a small gap in the rapidly rising ridgeline. A valley led to the rising ridge, and from the valley to the accident site, the average grade was 22 percent. From the accident site to the top of the ridge was an average grade of 20 percent.

NTSB Probable Cause Narrative

The pilot's failure to maintain airspeed while maneuvering in mountainous terrain, which led to a stall and impact with trees and terrain.

Event Information

Type of Event Accident
Event Date 8/31/2005
Event Day of the Week Wednesday
Time of Event 1050
Event Time Zone Mountain Daylight Time
Event City Mountain City
Event State NEVADA
Event Country --
Zipcode of the event site 89831
Event Date Year 2005
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 414600N
Event Location Longitude 1151900W
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1056 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 192
Weather Observation Facility ID EKO
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) 68
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) -4
Wind Direction (degrees magnetic) 30
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.22
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 21888
NTSB Notification Source FAA
NTSB Notification Date Aug 31 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jul 25 2007 12:22PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Reno, Nevada

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2333J
NTSB Number LAX05LA324
Missing Aircraft Indicator Y
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 Piper
Aircraft Model PA-18-150
Aircraft Series Identifier --
Aircraft Serial Number 18-7909106
Certified Max Gross Weight 1700
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed Yes
ELT Activated --
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Roy Grossman
Aircraft Owner Street Address --
Aircraft Owner City Napa
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 94558
Operator is an individual? No
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? --
Certified for Part 133 or 137 Operation --
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 06U
Departure City Jackpot
Departure State NV
Departure Country USA
Departure Time 1030
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code 0O5
Destination City Davis
Destination State CA
Destination Country USA
Specific Phase of Flight Unknown
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 12 2007 11:05AM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --