Aircraft Accident/Incident Report

Rolling Fork, Mississippi 39070
Tuesady, March 6, 1990 9:30 CST

NTSB Narrative Summary Released at Completion of Accident

WHILE ON SHORT FINAL, THE PLT WAS UNABLE TO CONTROL THE ACFT ABOUT THE LONGITUDINAL AXIS. THE BANK CONTINUED UNTIL THE ACFT IMPACTED THE GROUND & CAME TO REST INVERTED. EXAM OF THE ACFT REVEALED THAT THE LEFT AILERON SEPARATED UPWARD IN-FLT. THE THREE BOLTS & SELF LOCKING NUTS USED TO SECURE IT WERE NOT LOCATED. THERE WAS NO DAMAGE TO THE AILERON ATTACH ARMS UNDER THE WING NOR WAS THERE DAMAGE TO THE AILERON'S ATTACH PIONTS. THE AILERON PUSH-PULL ROD WAS EXAMINED & WAS FOUND TO HAVE FAILED DUE TO OVER LOAD. AN ANNUAL INSPN WAS PERFORMED 5 DAYS EARLIER, BUT THE AILERON WAS NOT REMOVED. THE ACFT LOGBOOK DID NOT CONTAIN AN ENTRY INDICATING THAT THE AILERON WAS REMOVED.

NTSB Probable Cause Narrative

THE IN-FLIGHT SEPARATION OF THE LEFT AILERON DUE TO IMPROPER MAINTENANCE PROCEDURES AND AN INADEQUATE AIRCRAFT PREFLIGHT.

Event Information

Type of Event Accident
Event Date 3/6/1990
Event Day of the Week Tuesday
Time of Event 930
Event Time Zone Central Standard Time
Event City ROLLING FORK
Event State MISSISSIPPI
Event Country --
Zipcode of the event site 39070
Event Date Year 1990
Event Date Month 3
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 1000 Central Standard Time
Direction of event from weather observation facility (degrees) 45
Weather Observation Facility ID GWO
Elevation of weather observation facility 155
Distance of event from weather observation facility (units?) 51
Time Zone of the weather observation CST
Lighting Conditions Day
Lowest Ceiling Height 20000
Lowest Non-Ceiling Height 10000
Sky/Lowest/Cloud Conditions Scattered
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) 19
Dew Point at event time (in degress fahrenheit) 7
Wind Direction (degrees magnetic) 50
Variable Wind Indicator Unknown
Wind Speed (knots) 4
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 600
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) 247
NTSB Notification Source --
NTSB Notification Date Mar 9 1990 12:00AM
NTSB Notification Time 1404
Fiche Number and/or location -used to find docket information 41013
Date of most recent change to record Dec 12 2000 4:50PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N23509
NTSB Number MIA90LA083
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 301-0391
Certified Max Gross Weight 5000
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 1 1990 12:00AM
Airframe hours since last inspection --
Airframe Hours 4851
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name NICKS FLYING SERVICE INC
Aircraft Owner Street Address P.O. BOX 309
Aircraft Owner City ROLLING FORK
Aircraft Owner State MS
Aircraft Owner Country
Aircraft Owner Zipcode 39159
Operator is an individual? --
Operator Name NICKS FLYING SERVICE, INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address P.O. BOX 309
Operator City ROLLING FORK
Operator State MS
Operator Country
Operator Zip code 39159
Operator Code
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
Departure City
Departure State
Departure Country
Departure Time 920
Departure Time Zone CST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code 2
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 10:35AM
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 --