Aircraft Accident/Incident Report

Lapwai, Idaho 83540
Tuesady, May 14, 1991 12:30 PDT

NTSB Narrative Summary Released at Completion of Accident

THE PILOT STATED THAT HE ENCOUNTERED DOWNDRAFTS AND RAPID SINK AT THE EDGE OF THE FIELD HE WAS PREPARING TO SPRAY DURING AERIAL APPLICATION ACTIVITY. HE ATTEMPTED TO CORRECT, BUT THE MAIN LANDING GEAR TOUCHED THE CROPS AND THE AIRCRAFT TOUCHED DOWN IN THE MUDDY SOIL. THE AIRCRAFT SLID TO A STOP AND STARTED BURNING.

NTSB Probable Cause Narrative

THE PILOT'S MISJUDGMENT OF AN AERIAL APPLICATION SWATH RUN. FACTORS INCLUDE A DOWNDRAFT CONDITION AND SOFT TERRAIN.

Event Information

Type of Event Accident
Event Date 5/14/1991
Event Day of the Week Tuesday
Time of Event 1230
Event Time Zone Pacific Daylight Time
Event City LAPWAI
Event State IDAHO
Event Country --
Zipcode of the event site 83540
Event Date Year 1991
Event Date Month 5
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 Unknown
Investigator's weather source Witness
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 12000
Lowest Non-Ceiling Height 6500
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 30
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Unknown
Wind Speed (knots) 7
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
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) 1164
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 44201
Date of most recent change to record Dec 12 2000 10:03AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8792H
NTSB Number SEA91LA105
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion Ground
Aircraft Manufacturer's Full Name GRUMMAN
Aircraft Model G-164A
Aircraft Series Identifier G-164A
Aircraft Serial Number 1530
Certified Max Gross Weight 5300
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 Unknown
Date of Last Inspection --
Airframe hours since last inspection 0
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name SCHUMACHER AGRI-FLITE, INC
Aircraft Owner Street Address P.O. BOX 381
Aircraft Owner City LEWISTON
Aircraft Owner State ID
Aircraft Owner Country
Aircraft Owner Zipcode 83501
Operator is an individual? --
Operator Name SCHUMACHER AGRI-FLITE, INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address P.O. BOX 381
Operator City LEWISTON
Operator State ID
Operator Country
Operator Zip code 83501
Operator Code WQRG
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 No
Departure Airport Code LWS
Departure City LEWISTON
Departure State ID
Departure Country
Departure Time 1215
Departure Time Zone PDT
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 --