Gillmore MONI N157LG

Summary

On 7 July 1984 at about 21:00 local time, a Gillmore MONI registered N157LG was involved in an accident near Joliet, Illinois, United States. One person was on board and nobody was injured. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

7 July 1984 at 21:00

Classification

Accident

Location

Joliet, Illinois, United States

Nearest airport

Wilhelmi (0C3)

Coordinates

41.5197, -88.1196

Aircraft

Gillmore MONI

Registration

N157LG

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Unknown → Waukegan

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

CHI84LA286

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

THE PROP SEPARATED FROM THE ACFT AT APRX 500 FT AGL DURING THE INITIAL TAKEOFF CLIMB. A FORCED LANDING WAS MADE IN A CORN FIELD. THE PROP WAS ATTACHED BY MEANS OF 4 5/16 INCH BOLTS AND RETAINING NUTS. TWO OF THE FOUR BOLT PORTIONS REMAINING AFTER THE ACCIDENT WERE REMOVED. ONE OF WHICH WAS TESTED AND PROGRESSIVE FATIGUE WAS FOUND. THE KIT MANUFACTURER LATER ISSUED A SERVICE BULLETIN STATING THAT WITH THE NUTS PROPERLY TORQUED IT IS POSSIBLE FOR THE NUTS TO BOTTOM OUT ON THE BOLT THREADS WHICH WOULD RESULT IN THE BOLTS SHEARING. THE MANUFACTURER SUGGESTS INSTALLING WASHERS AT THE HEAD OF THE BOLT TO PREVENT THE NUT FROM BOTTOMING OUT.

Quoted verbatim from the NTSB record.