Aircraft Accident/Incident Report

Parker, Arizona 85344
Saturday, August 8, 1992 22:15 MST

NTSB Narrative Summary Released at Completion of Accident

THE PILOT WAS CONDUCTING AN AERIAL APPLICATION SWATH RUN WHEN 10 INCHES OF A PROPELLER BLADE SEPARATED. THE PILOT EXECUTED AN EMERGENCY LANDING. ON TOUCHDOWN, THE AIRCRAFT NOSED OVER AFTER COLLIDING WITH THE ROUGH/UNEVEN TERRAIN. A METALLURGICAL EXAMINATION OF PROPELLER BLADE DISCLOSED THE PRESENCE OF FATIGUE ACROSS 60% OF THE FRACTURED SURFACE. THE ORIGIN OF THE FATIGUE CENTERED ON A NOTCH OF A PREVIOUSLY REWORKED AREA. THE PROPELLER BLADE HAD ACCURED 273 FLIGHT HOURS SINCE IT WAS OVERHAULED.

NTSB Probable Cause Narrative

THE INADEQUATE OVERHAUL OF THE PROPELLER BLADE BY THE OVERHAUL FACILITY. CONTRIBUTING TO THIS ACCIDENT WAS THE ROUGH AND UNEVEN TERRAIN.

Event Information

Type of Event Accident
Event Date 8/8/1992
Event Day of the Week Saturday
Time of Event 2215
Event Time Zone Mountain Standard Time
Event City PARKER
Event State ARIZONA
Event Country --
Zipcode of the event site 85344
Event Date Year 1992
Event Date Month 8
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 --
Weather Briefing Completeness Full
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 Not Reported
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) 38
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 180
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
Density Altitude (feet) --
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) 2436
NTSB Notification Source --
NTSB Notification Date Aug 9 1992 12:00AM
NTSB Notification Time 2100
Fiche Number and/or location -used to find docket information 47148
Date of most recent change to record Dec 11 2000 3:12PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1547P
NTSB Number LAX92LA338
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-401
Aircraft Series Identifier AT-401
Aircraft Serial Number 401-0861
Certified Max Gross Weight 6000
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 100 Hour
Date of Last Inspection Jul 30 1992 12:00AM
Airframe hours since last inspection 23
Airframe Hours 273
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name MORRIS, GARY & CONNIE
Aircraft Owner Street Address 1112 19TH STREET
Aircraft Owner City PARKER
Aircraft Owner State AZ
Aircraft Owner Country
Aircraft Owner Zipcode 85344
Operator is an individual? --
Operator Name MORRIS, GARY & CONNIE
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 1112 19TH STREET
Operator City PARKER
Operator State AZ
Operator Country
Operator Zip code 85344
Operator Code ZCUG
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 2210
Departure Time Zone MST
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 Maneuvering
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 --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --