Mariposa-Yosemite Airport
Aircraft Accident/Incident Report

Mariposa, California 95338
Saturday, October 29, 1994 12:00 PDT

NTSB Narrative Summary Released at Completion of Accident

THE NON-CERTIFICATED PILOT WAS COMPLETING A VISUAL FLIGHT RULES PERSONAL FLIGHT WITH A PASSENGER. DURING THE LANDING ROLLOUT, THE PILOT INADVERTENTLY APPLIED UNEVEN BRAKING AND THE AIRPLANE GROUND LOOPED. THE PILOT'S THIRD CLASS MEDICAL/STUDENT PILOT'S CERTIFICATE EXPIRED ON JUNE 30, 1993.

NTSB Probable Cause Narrative

the unqualified student pilot's improper use of the brakes and his failure to maintain directional control of the aircraft. The pilot's lack of total experience is a factor in this accident.

Event Information

Type of Event Accident
Event Date 10/29/1994
Event Day of the Week Saturday
Time of Event 1200
Event Time Zone Pacific Daylight Time
Event City MARIPOSA
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95338
Event Date Year 1994
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport MARIPOSA-YOSEMITE
Event Location Nearest Airport ID O68
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 2250
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 Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 5
Air Temperature at event time (in degrees celsius) 24
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
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) 1349
NTSB Notification Source --
NTSB Notification Date Nov 1 1994 12:00AM
NTSB Notification Time 1305
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 12:28PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7MM
NTSB Number LAX95LA028
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 CHAMPION
Aircraft Model 7ECA
Aircraft Series Identifier 7ECA
Aircraft Serial Number 493
Certified Max Gross Weight 1650
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 2
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 4 1993 12:00AM
Airframe hours since last inspection 40
Airframe Hours 2368
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name CLARK, LAWANNA
Aircraft Owner Street Address 2449 KOKANEE RD.
Aircraft Owner City MARIPOSA
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 95338
Operator is an individual? --
Operator Name NEBEKER, GENE
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 4005 BEN HUR RD.
Operator City MARIPOSA
Operator State CA
Operator Country
Operator Zip code 95338
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 Yes
Departure Airport Code O68
Departure City
Departure State
Departure Country
Departure Time 1100
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code O68
Destination City
Destination State CA
Destination Country
Specific Phase of Flight Landing
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 26
Runway Length 3310
Runway Width 50
Sight Seeing flight No
Air Medical Flight No
Medical Flight --