Mammoth-June Lakes Airport
Aircraft Accident/Incident Report

Mammoth, California 93546
Friday, June 27, 1986 16:00 PDT

NTSB Narrative Summary Released at Completion of Accident

THE PLT LOST CONTROL OF THE ACFT & IT COLLIDED WITH TERRAIN DURING A LANDING TO RWY 27. THE PLT INDICATED THAT THE WINDS WERE FROM 190 DEG AT 15 GUSTING 20 KTS. REPORTEDLY, HE LANDED ON RWY 27 WITH AN INDICATED AIRSPEED OF 80 MPH. DURING THE LANDING ROLL, A GUST OF WIND WAS ENCOUNTERED & THE ACFT VEERED LEFT & GROUND LOOPED OFF THE RWY. THE MAIN GEAR COLLAPSED WHEN THE AIRCRAFT CROSSED THE RWY SHOULDER ONTO ROUGH TERRAIN. THE PLT ALSO INDICATED THAT HE HAD RECEIVED A WEATHER BRIEFING FROM A FSS. THE WINDS WERE FORCAST TO BE FROM 190 DEG AT 15 GUSTING 20 KTS AT THE DESTINATION.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 6/27/1986
Event Day of the Week Friday
Time of Event 1600
Event Time Zone Pacific Daylight Time
Event City MAMMOTH
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93546
Event Date Year 1986
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport MAMMOTH-JUNE LAKES
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 0
Degrees magnetic from airport 0
Airport Elevation 7128
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
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 15000
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) 41
Air Temperature at event time (in degrees celsius) 27
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 190
Variable Wind Indicator Unknown
Wind Speed (knots) 15
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 20
Altimeter Setting at event time (in. Hg) 30
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 4
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1535
NTSB Notification Source --
NTSB Notification Date Jun 29 1986 12:00AM
NTSB Notification Time 1825
Fiche Number and/or location -used to find docket information 31949
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N7687B
NTSB Number LAX86LA267
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 14-19-2
Aircraft Series Identifier 14-19-2
Aircraft Serial Number 4038
Certified Max Gross Weight 2700
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 3 1986 12:00AM
Airframe hours since last inspection 10
Airframe Hours 2141
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name JAMES D. ROBERTS
Aircraft Owner Street Address 508 MULBERRY STREET
Aircraft Owner City TEHACHAPI
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 93561
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 TSP
Departure City TECHACHAPI
Departure State CA
Departure Country
Departure Time 1430
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code MMH
Destination City MAMMOTH
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 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 27
Runway Length 7000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --