Aircraft Accident/Incident Report

Brooten, Minnesota 56316
Saturday, August 28, 1999 14:30 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that after an aerial application run of approximately 30 minutes the aircraft departed the spray-run in a climbing right turn when the engine, '...burped once or twice and quit.' The pilot reported that the terrain around his position was heavily wooded except for a narrow swamp area in which he elected to land the aircraft. During the on-scene portion of the investigation, the engine and its components were examined. Partial disassembly of the P&W R-1340-AN1 engine disclosed that the blower impeller had failed which would have restricted induction air to the cylinders.

NTSB Probable Cause Narrative

the compressor impeller failure and the unsuitable terrain for landing encountered by the pilot.

Event Information

Type of Event Accident
Event Date 8/28/1999
Event Day of the Week Saturday
Time of Event 1430
Event Time Zone Central Daylight Time
Event City BROOTEN
Event State MINNESOTA
Event Country --
Zipcode of the event site 56316
Event Date Year 1999
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1555 Central Daylight Time
Direction of event from weather observation facility (degrees) 177
Weather Observation Facility ID ILL
Elevation of weather observation facility 1127
Distance of event from weather observation facility (units?) 23
Time Zone of the weather observation CDT
Lighting Conditions Day
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) 23
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 80
Variable Wind Indicator Unknown
Wind Speed (knots) 6
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 2190
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) 1163
NTSB Notification Source --
NTSB Notification Date Aug 28 1999 12:00AM
NTSB Notification Time 1937
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jan 10 2001 9:51AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8417V
NTSB Number CHI99LA317
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 Ayres
Aircraft Model S-2R
Aircraft Series Identifier S-2R
Aircraft Serial Number 2177R
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 Annual
Date of Last Inspection Aug 2 1999 12:00AM
Airframe hours since last inspection --
Airframe Hours 6298
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name BENSON AIR AG INC
Aircraft Owner Street Address 330 20TH ST NW
Aircraft Owner City BENSON
Aircraft Owner State MN
Aircraft Owner Country
Aircraft Owner Zipcode 56215
Operator is an individual? --
Operator Name
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address
Operator City
Operator State
Operator Country
Operator Zip code
Operator Code PVMG
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 6D1
Departure City
Departure State
Departure Country
Departure Time 1400
Departure Time Zone CDT
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 10 2001 12:27PM
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 --