- Date
- October 20, 1991, 16:00 local (21:00 UTC)
- Place
- Lake Geneva, WI
- Injuries
- 4 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N10JFNorth American Navion D
- Weather
- Visual (VMC) · Day
- Status
- Completed · report August 13, 1993
- Report
- Approved by Office Director
- FAA report
- 19911020047079A
- Case key
- 15339
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Fatigue failure of the crankshaft. A factor in the accident was inadequate quality control by other maintenance personnel.
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 pilot climbed to cruise altitude and had set power before the engine vibrated briefly and quit. The pilot executed a forced landing in a rough field. Engine teardown revealed a broken crankshaft. The fracture surface showed fatigue emanating from a scratch in a fillet at the number 2 main bearing journal.
Aircraft
- Registration
- N10JF
- Reported as
- North American Navion D
- Category
- Airplane
- Serial number
- NAV-4-1391
- Airframe hours
- 5,200
- Engine
- Continental I0-520B, 285 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Rempert, Roger L.
- Registered owner
- Rempert, Roger L.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · October 5, 1991 · 95 hours before
- Departed
- C59 · Delavan, WI
- Destination
- ENW · Kenosha, WI
- Airport
- C02 · Americana, runway 23, 4,100 × 75 ft, dirt
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
- 49
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 1,500 total · 500 in this make and model · 1,500 as pilot in command · 100 in the last 90 days · 25 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 230° at 14 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Altimeter
- 30.00 inHg
- Observed at
- JVL, 29 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.