Mammoth Yosemite Airport
Aircraft Accident/Incident Report

Mammoth Lakes, California 93546
Monday, January 21, 2002 16:30 PST

NTSB Narrative Summary Released at Completion of Accident

The airplane impacted a snow bank and nosed over after the pilot lost control of the airplane during a landing roll in 45-knot gusty crosswind conditions. According to the pilot, he obtained numerous weather updates prior to departing and during the flight. All of the reports included notification of gusty wind conditions. The pilot obtained one more wind report prior to landing on runway 27, which informed him that the wind was from 210 degrees at 25 knots with gusts to 45 knots. The pilot continued with the landing and during the rollout, at 30 knots, a gust of wind lifted the left wing, blowing the airplane to the right into a snow bank. The pilot reported placing the control yoke in the full aft position (up elevator) after the original upset, when the airplane was encountering a tailwind condition. The airplane then hit the snow bank and nosed over. The airplane's Pilot Operating Handbook instructs pilots to put the elevator in a down position when encountering a tailwind condition. A review of the Airport/Facility Directory, Southwest U. S., revealed a caution to pilots regarding gusty wind conditions and wind shear.

NTSB Probable Cause Narrative

the pilot's inadequate compensation for the gusty crosswind conditions, which resulted in a loss of aircraft control and nose over during landing roll.

Event Information

Type of Event Accident
Event Date 1/21/2002
Event Day of the Week Monday
Time of Event 1630
Event Time Zone Pacific Standard Time
Event City Mammoth Lakes
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93546
Event Date Year 2002
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 373726N
Event Location Longitude 1185016W
Event Location Airport Mammoth Yosemite
Event Location Nearest Airport ID MMH
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 7128
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 1655 Pacific Standard Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID MMH
Elevation of weather observation facility 7128
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 3
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 26
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 42
Altimeter Setting at event time (in. Hg) 29.9
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 16314
NTSB Notification Source
NTSB Notification Date Jan 21 2002 12:00AM
NTSB Notification Time 1720
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 29 2004 1:02PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Reno, NV

Aircraft Involved

Aircraft #1

Aircraft Registration Number N72635
NTSB Number LAX02LA068
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 206H
Aircraft Series Identifier --
Aircraft Serial Number 20608065
Certified Max Gross Weight 3600
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 6
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 12 2001 12:00AM
Airframe hours since last inspection 84.8
Airframe Hours 720.2
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name DMH Air
Aircraft Owner Street Address 1528 Santiago Drive
Aircraft Owner City Newport Beach
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 92660
Operator is an individual? No
Operator Name Lenair Aviation
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 19531 Campus Drive; Suite 5
Operator City Santa Ana
Operator State CA
Operator Country USA
Operator Zip code 92707
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 SNA
Departure City Santa Ana
Departure State CA
Departure Country USA
Departure Time 1415
Departure Time Zone PST
Destination Same as Local Flt crash at destination city
Destination Airport Code MMH
Destination City Mammoth Lakes
Destination State CA
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jul 16 2004 6:13PM
User who most recently changed record COOS
Since inspection or accident Time of Accident
Event Location Runway Number and Location 27
Runway Length 7000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --