Aircraft Accident/Incident Report

New Haven, Illinois 62867
Sunday, July 12, 1998 8:00 CDT

NTSB Narrative Summary Released at Completion of Accident

The pilot stated that there was 90 gallons of fuel on board upon departure and that he did nor hear any unusual engine sounds during the loss of engine power. He had completed spraying and was returning to his airstrip at an altitude of 150 ft above ground level for another load when the engine torque reading dropped to 30%. While attempting to increase power, the pilot reported that the engine quit at which time he then preformed an emergency landing to a muddy field Inspection of the engine found the compressor, turbine, accessory gear box and reduction gear box to rotate. The chip detector was examined and was found to be free of contaminants. The fuel lines to the engine, the fuel filter and its respective fuel bowl was unobstructed. No external contaminants were observed to be present on the igniter. The engine pneumatic lines were in place and did not possess any indications of leakage. One blade of the first stage turbine rotor and two blades of the power turbine were fractured. The compressor and turbine housing exhibited twisting without any localized outward deformations or punctures. The fuel-oil heater was found to be intact and upon internal examination a 50/50 ratio of fuel to water was estimated to be present. The high pressure fuel pump and fuel control units were examined by Pratt and Whitney under the supervision of the Transportation Safety Board of Canada and no anomalies were noted. The Transportation Safety Board of Canada concurs with the report which states, 'Dynamic tests to the Fuel Control did not identify any indications that would have precluded appropriate engine performance and goes on to say, 'The gear stage was observed to be in good condition when ignoring the damage created during the suspected field inspection of the pump'. Metallic debris was found to be present in the field inspection of the high pressure fuel filter bowl and is considered to be normal in this area.

NTSB Probable Cause Narrative

Water contamination of the fuel system. A related factor was the swampy terrain.

Event Information

Type of Event Accident
Event Date 7/12/1998
Event Day of the Week Sunday
Time of Event 800
Event Time Zone Central Daylight Time
Event City NEW HAVEN
Event State ILLINOIS
Event Country --
Zipcode of the event site 62867
Event Date Year 1998
Event Date Month 7
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 Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1054
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID EVV
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 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) 26
Dew Point at event time (in degress fahrenheit) 18
Wind Direction (degrees magnetic) 110
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) 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) 906
NTSB Notification Source --
NTSB Notification Date Jul 12 1998 12:00AM
NTSB Notification Time 1428
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:36AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6731K
NTSB Number CHI98LA251
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 Grumman
Aircraft Model G-164B
Aircraft Series Identifier G-164B
Aircraft Serial Number 442-B
Certified Max Gross Weight 5200
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 Jun 17 1998 12:00AM
Airframe hours since last inspection 26
Airframe Hours 5921
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name FRANK MORRIS PARRISH
Aircraft Owner Street Address 3114 LOWER NEW HARMONY RD
Aircraft Owner City MOUNT VERNON
Aircraft Owner State IN
Aircraft Owner Country
Aircraft Owner Zipcode 47620
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 PRRG
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 OING
Departure City MOUNT VERNON
Departure State IN
Departure Country
Departure Time 700
Departure Time Zone CDT
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Cruise
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 --