Aircraft Accident/Incident Report

Hickory, North Carolina 28601
Monday, October 26, 1998 15:15 EST

NTSB Narrative Summary Released at Completion of Accident

The pilot stated the engine lost power without warning while in cruise flight between 500-700 feet. An autorotaion was made to a clear area with high vegetation. During touchdown on the previously unnoticed uneven terrain, the main rotor hit the mechanical stop and contacted the tailboom. The helicopter then spun around 180 degrees and came to rest. Postcrash examination of the engine showed the rear cylinder had seized in the barrel. The pilot stated this was the second time this had happened. The engine had accumulated 46 hours since being rebuilt after the previous failure.

NTSB Probable Cause Narrative

The seizure of the rear piston in the cylinder barrel resulting in total loss of engine power and an autorotation which resulted in main rotor contact with the tail boom while touching down on unsuitable terrain.

Event Information

Type of Event Accident
Event Date 10/26/1998
Event Day of the Week Monday
Time of Event 1515
Event Time Zone Eastern Standard Time
Event City HICKORY
Event State NORTH CAROLINA
Event Country --
Zipcode of the event site 28601
Event Date Year 1998
Event Date Month 10
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1553 Eastern Standard Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID HKY
Elevation of weather observation facility 1189
Distance of event from weather observation facility (units?) 1
Time Zone of the weather observation EST
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) 24
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Variable
Wind Speed (knots) 0
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 1800
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1162
NTSB Notification Source --
NTSB Notification Date Oct 26 1998 12:00AM
NTSB Notification Time 1824
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:50AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N500GQ
NTSB Number MIA99LA017
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 Reinhold
Aircraft Model REVOLUTION MINI 500
Aircraft Series Identifier REVOLUTION
Aircraft Serial Number 404
Certified Max Gross Weight 840
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Mar 15 1998 12:00AM
Airframe hours since last inspection 38
Airframe Hours 69
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name GRAUER REINHOLD
Aircraft Owner Street Address 4740 MATTHEWS WEDDINGTON RD
Aircraft Owner City MATTHEWS
Aircraft Owner State NC
Aircraft Owner Country
Aircraft Owner Zipcode 28105
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
Departure City WEDDINGTON
Departure State NC
Departure Country
Departure Time 1345
Departure Time Zone EST
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 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 --