Aircraft Accident/Incident Report

Plains, Georgia 31780
Saturday, September 16, 1995 11:30 EDT

NTSB Narrative Summary Released at Completion of Accident

During the first spray run of an aerial application flight, the engine lost power. Subsequently, the aircraft nosed over during a forced landing and was damaged. An examination of the engine revealed that the number four cylinder rocker arm housing had fractured. The fracture surface had a rough, granular, and irregular appearance, typical of overload failure. There was evidence that when the rocker arm housing became separated from the cylinder, the rocker arm pin failed, allowing the rocker arm to separate from the cylinder and resulting in a loss of continuity to the exhaust valve. The exhaust valve then remained closed, and the engine lost power.

NTSB Probable Cause Narrative

Failure of the number four cylinder rocker arm housing and pin, which resulted in a closed exhaust valve and loss of engine power.

Event Information

Type of Event Accident
Event Date 9/16/1995
Event Day of the Week Saturday
Time of Event 1130
Event Time Zone Eastern Daylight Time
Event City PLAINS
Event State GEORGIA
Event Country --
Zipcode of the event site 31780
Event Date Year 1995
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1306 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 50
Weather Observation Facility ID AJC
Elevation of weather observation facility 466
Distance of event from weather observation facility (units?) 15
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 5000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
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) 28
Dew Point at event time (in degress fahrenheit) 25
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
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) 1500
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1666
NTSB Notification Source --
NTSB Notification Date Sep 16 1995 12:00AM
NTSB Notification Time 1310
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 7 2000 4:34PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N2362D
NTSB Number ATL95LA169
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name AIR TRACTOR
Aircraft Model AT-301
Aircraft Series Identifier AT-301
Aircraft Serial Number 0404
Certified Max Gross Weight 7800
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 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Mar 22 1995 12:00AM
Airframe hours since last inspection 299
Airframe Hours 5731
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name JOHNNY & TRUDY GOSA
Aircraft Owner Street Address POST OFFICE BOX 120
Aircraft Owner City SMITHVILLE
Aircraft Owner State GA
Aircraft Owner Country
Aircraft Owner Zipcode 31787
Operator is an individual? --
Operator Name GOSA'S AERIAL AG
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address POST OFFICE BOX 120
Operator City SMITHVILLE
Operator State GA
Operator Country
Operator Zip code 31787
Operator Code JTKG
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Agriculture
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Unknown
Indicates Domestic or International Flight Unknown
Operator carrying Pax/Cargo/Mail Unknown
Type of Flying (Per_Bus / Primary) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code NONE
Departure City
Departure State
Departure Country
Departure Time 1111
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 Emergency 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 --