Chester Muni Airport
Aircraft Accident/Incident Report

Chester, South Carolina 29706
Saturday, June 21, 1986 13:05 EDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT RELATED THAT WHILE TURNING FROM BASE TO FINAL HE HEARD A LOUD BANG FROM THE LEFT SIDE OF THE AIRCRAFT. THE AIRCRAFT ENTERED A STEEP LEFT TURN AND CRASHED LEFT OF FINAL APPROACH COURSE. POST CRASH EXAMINATION OF THE AIRCRAFT REVEALED THAT THE FLAP DISENGAGED FROM THE FLAP DRIVE UNIT RESULTING IN A SPLIT FLAP CONDITION. THE FLAPS HAD BEEN MODIFIED WITH THE USE OF POP RIVETS AT THE ATTACH POINTS.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 6/21/1986
Event Day of the Week Saturday
Time of Event 1305
Event Time Zone Eastern Daylight Time
Event City CHESTER
Event State SOUTH CAROLINA
Event Country --
Zipcode of the event site 29706
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 CHESTER MUNI
Event Location Nearest Airport ID 9A6
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 657
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) 15
Air Temperature at event time (in degrees celsius) 32
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Light and Variable
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
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 --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 913
NTSB Notification Source --
NTSB Notification Date Jun 21 1986 12:00AM
NTSB Notification Time 1938
Fiche Number and/or location -used to find docket information 31264
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N9700P
NTSB Number ATL86LA179
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 ANDREW D. MOORE
Aircraft Model HP-18
Aircraft Series Identifier HP-18
Aircraft Serial Number 18-162
Certified Max Gross Weight 900
Aircraft Category Glider
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 --
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Apr 22 1986 12:00AM
Airframe hours since last inspection --
Airframe Hours 200
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name
Aircraft Owner Street Address
Aircraft Owner City
Aircraft Owner State
Aircraft Owner Country
Aircraft Owner Zipcode
Operator is an individual? --
Operator Name WILLIAM P. DAVIS
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address ROUTE 5, BOX 83
Operator City CLOVER
Operator State SC
Operator Country
Operator Zip code 29710
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
Departure City
Departure State
Departure Country
Departure Time 1200
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 Descent
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 35
Runway Length 5000
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --