Aircraft Accident/Incident Report

Ravenna, Ohio 44266
Saturday, August 5, 2000 19:09 EDT

NTSB Narrative Summary Released at Completion of Accident

The homebuilt helicopter was in cruise flight at 70 knots approximately 600 feet above ground level (agl) when the pilot heard a loud report from behind the cockpit, felt the helicopter yaw, and thought the tail rotor had departed the helicopter. After he entered autorotation, he realized that he still had tail rotor authority. During the descent, the engine was running smoothly at idle, and he chose to continue the autorotation at idle power. The helicopter touched down in a field. At the end of the ground run, the skids became entangled in the soybean crop and the helicopter rolled over. The pilot reported that his post-accident examination of the helicopter revealed he had left a spark plug wire unsecured after a recent inspection, and that he was sure the loose wire caused the interruption in power and the adverse yaw during the flight. He said there were no other mechanical deficiencies with the helicopter.

NTSB Probable Cause Narrative

The pilot/owner's inadequate installation of an ignition lead that resulted in a partial loss of engine power and forced landing to unsuitable terrain. A factor in the accident was the soybean crop in the forced landing site.

Event Information

Type of Event Accident
Event Date 8/5/2000
Event Day of the Week Saturday
Time of Event 1909
Event Time Zone Eastern Daylight Time
Event City RAVENNA
Event State OHIO
Event Country --
Zipcode of the event site 44266
Event Date Year 2000
Event Date Month 8
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 1200
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1845 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID AKR
Elevation of weather observation facility 1228
Distance of event from weather observation facility (units?) 12
Time Zone of the weather observation EDT
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) 10
Air Temperature at event time (in degrees celsius) 73
Dew Point at event time (in degress fahrenheit) 52
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 1950
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) 10547
NTSB Notification Source FAA Great Lake Comm Center
NTSB Notification Date Aug 5 2000 12:00AM
NTSB Notification Time 2126
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Sep 26 2001 10:21AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N11662
NTSB Number IAD00LA071
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 Showalter
Aircraft Model ROTORWAY 152
Aircraft Series Identifier ROTORWAY 1
Aircraft Serial Number 1-8696
Certified Max Gross Weight 1320
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
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 Jul 7 2000 12:00AM
Airframe hours since last inspection 6
Airframe Hours 106
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ROBERT B. SHOWALTER
Aircraft Owner Street Address
Aircraft Owner City AKRON
Aircraft Owner State OH
Aircraft Owner Country
Aircraft Owner Zipcode 44312
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 NONE
Departure City ATWATER
Departure State OH
Departure Country
Departure Time 1830
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 30 2001 4:00AM
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 --