- Date
- July 7, 1984, 16:00 local (21:00 UTC)
- Place
- Joliet, IL
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N157LGGillmore Moni
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19840707030759A
- Case key
- 12690
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
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.
Aircraft
- Registration
- N157LG
- Reported as
- Gillmore Moni
- Category
- Airplane, amateur-built
- Serial number
- 157
- Airframe hours
- 30
- Engine
- KFM 107E, 35 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Gary A. Gillmore
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · September 22, 1983
- Destination
- UGN · Waukegan, IL
- Airport
- 0C3 · Wilhelmi
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 37
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Flight hours
- 30 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 80° at 8 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 70 °F, dew point 45 °F
- Altimeter
- 29.00 inHg
- Observed at
- MDW, 23 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.