Aircraft Accident/Incident Report

Oracle, Arizona 85746
Friday, September 17, 1993 10:05 MST

NTSB Narrative Summary Released at Completion of Accident

DURING A LOCAL VFR FLIGHT, THE ENGINE LOST POWER. THE PILOT TRIED TO LAND ON AN ASPHALT SURFACED ROAD, BUT WAS UNABLE TO REACH THE ROADWAY. DURING THE FORCED LANDING, THE AIRPLANE COLLIDED WITH TREES ON UNEVEN DESERT TERRAIN AND WAS DAMAGED. AN EXAMINATION OF THE ENGINE REVEALED THAT THE CRANKSHAFT HAD FAILED FORWARD OF THE NUMBER ONE JOURNAL. THE FRACTURED SURFACES DISPLAYED BEACH MARKS CONSISTENT WITH FATIGUE. THERE WAS NO EVIDENCE THAT THE ENGINE HAD SUSTAINED ANY HIGH TEMPERATURE DISTRESS OR LACK OF LUBRICATION. THE ENGINE HAD ACCRUED ABOUT 4434 HOURS SINCE NEW AND ABOUT 1110 HOURS SINCE IT WAS OVERHAULED ON 12/10/87.

NTSB Probable Cause Narrative

FAILURE OF THE CRANKSHAFT DUE TO FATIGUE.

Event Information

Type of Event Accident
Event Date 9/17/1993
Event Day of the Week Friday
Time of Event 1005
Event Time Zone Mountain Standard Time
Event City ORACLE
Event State ARIZONA
Event Country --
Zipcode of the event site 85746
Event Date Year 1993
Event Date Month 9
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 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) --
Visibility (Statute Miles) 40
Air Temperature at event time (in degrees celsius) 32
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 130
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
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 Serious
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 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1089
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:39PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6336B
NTSB Number LAX93LA356
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 CESSNA
Aircraft Model 182A
Aircraft Series Identifier 182A
Aircraft Serial Number 34236
Certified Max Gross Weight 2650
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Aug 16 1993 12:00AM
Airframe hours since last inspection 8
Airframe Hours 4433
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name DENNIS W. GENZMAN
Aircraft Owner Street Address 5520 S. CATCLAW
Aircraft Owner City TUCSON
Aircraft Owner State AZ
Aircraft Owner Country
Aircraft Owner Zipcode 85746
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 RYN
Departure City RYAN FIELD
Departure State AZ
Departure Country
Departure Time 935
Departure Time Zone MST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code RYN
Destination City
Destination State
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 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --