NTSB Identification: CHI83LA255.
The docket is stored on NTSB microfiche number 21577.
Accident occurred Monday, June 13, 1983 in CROOKSTON, MN
Aircraft: GRUMMAN G-164A, registration: N8595H
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ACFT COLLIDED WITH THE GROUND AFTER TAKEOFF. THE PILOT SAID THE ACFT LOST POWER AND FELT SLOPPY AT ABOUT 350 FT AGL.HE ADDED POWER BUT MAXIMUM OBTAINABLE WAS 2000 RPM AS OPPOSED TO 2300. THE PILOT SAID HE TRIED TO DROP THE LOAD BUT THE LOAD REMAINED WITH THE ACFT. THE HOPPER DUMP VALVES WERE OPERATIONAL. THE ACFT WAS ABOUT 1000 LBS OVER MAX GROSS WEIGHT. THE FRONT ROW OF SPARK PLUGS EXHIBITED CARBON DEPOSITS AND THE MAIN OIL SCREEN HAD TRAPPED HEAVY CARBON DEPOSITS WITH A SMALL AMOUNT OF FERROUS METAL. THE ACFT NOSED OVER DURING THE LANDING.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IGNITION SYSTEM,SPARK PLUG..CONTAMINATION

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT WEIGHT AND BALANCE..IMPROPER..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

LOAD JETTISON..DELAYED..PILOT IN COMMAND

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