Aircraft Accident/Incident Report

La Grange, Georgia 30240
Sunday, July 24, 1988 21:08 EDT

NTSB Narrative Summary Released at Completion of Accident

THE PIC STATED HE HAD A HARDOVER IN THE SINGLE AXIS AUTOPILOT WHICH RESULTED IN THE ACFT CONSTANTLY TURNING RIGHT. THEREFORE DUE TO THE CONTINOUS BANK HE ELECTED TO MAKE A PRECAUTIONARY LANDING IN A LAKE VERSUS ON LAND. THE ACFT IMPACTED IN A LAKE LEFT OF THE PLANNED COURSE. THE ROLL SERVO WAS DESIGNED SO THAT WHEN POWER WAS REMOVED FROM THE SERVO A SPRING DISENGAGED THE SERVO FROM THE AILERON BRIDLE CABLE. THE SPRING WAS FOUND FUNCTIONAL AFTER RECOVERY OF THE ACFT FROM THE LAKE. WITNESSES RPTED SEEING THE ACFT FLYING ABOUT 10-15 FEET ABOVE THE LAKE SURFACE FOR ABOUT ONE QUARTER MILE. AS THE ACFT APPROACHED A BRIDGE IT PULLED UP ABRUPTLY, STALLED, AND IMPACTED THE WATER.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 7/24/1988
Event Day of the Week Sunday
Time of Event 2108
Event Time Zone Eastern Daylight Time
Event City LA GRANGE
Event State GEORGIA
Event Country --
Zipcode of the event site 30240
Event Date Year 1988
Event Date Month 7
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 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2049 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 350
Weather Observation Facility ID CSG
Elevation of weather observation facility 390
Distance of event from weather observation facility (units?) 30
Time Zone of the weather observation EDT
Lighting Conditions Dusk
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 5
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) 17
Wind Direction (degrees magnetic) 310
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) 2300
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) 1474
NTSB Notification Source --
NTSB Notification Date Jul 25 1988 12:00AM
NTSB Notification Time 905
Fiche Number and/or location -used to find docket information 37599
Date of most recent change to record Dec 13 2000 11:55AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4506F
NTSB Number ATL88FA220
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 PIPER
Aircraft Model PA-28-151
Aircraft Series Identifier PA-28-151
Aircraft Serial Number 28-7715043
Certified Max Gross Weight 2325
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 Apr 14 1988 12:00AM
Airframe hours since last inspection 36
Airframe Hours 1038
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name R. M. THOMPSON & D. LAGUARDIA
Aircraft Owner Street Address P.O. BOX 1132
Aircraft Owner City NEWMAN
Aircraft Owner State GA
Aircraft Owner Country
Aircraft Owner Zipcode 30364
Operator is an individual? --
Operator Name ROBERT M. THOMPSON
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 209 JACKSON STREET
Operator City NEWNAN
Operator State GA
Operator Country
Operator Zip code 30263
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 06A
Departure City TUSKEGEE
Departure State AL
Departure Country
Departure Time 2050
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code CCO
Destination City NEWNAN
Destination State GA
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --