- Date
- July 29, 1992, 14:33 local (19:33 UTC)
- Place
- Mineral Point, WI
- Injuries
- 2 fatal
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N6503WCessna P210N
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 26, 1993
- Report
- Approved by Office Director
- FAA report
- 19920729028009A
- Case key
- 15300
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
The pilot's inadvertent stall and descent into terrain during a forced landing. Related factors are the manufacturer's undertorqued crankcase halves and inadequate surveillance, the pilot's delay in setting up the proper descent rate, and the altered aircraft performance with the separated propeller assembly.
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 reported a loss of engine power and declared an emergency. ATC issued vectors to the nearest airport, which was about ten miles away. The pilot then advised ATC he lost the propeller. About 3 minutes after the emergency was declared, the pilot reported 'I have the field....don't think I'm going to make it.' The airplane impacted terrain about 1.5 miles east of the airport. Post-accident investigation revealed the crankshaft was separated in two locations and the no. 2 main bearing had shifted in the journal. Metallurgical examination revealed one fracture was determined to be due to overstress and excessive torsional loads. The other fracture '...contained a well defined crack arrest pattern indicative of a high cycle fatigue crack. Examination of the crankcase halves revealed evidence of fretting at the mating surfaces.
Aircraft
- Registration
- N6503W
- Reported as
- Cessna P210N
- Category
- Airplane
- Serial number
- P21000789
- Airframe hours
- 1,465
- Engine
- Continental TSIO-520-AF, 310 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Jeanal Enterprises, Inc.
- Registered owner
- Jeanal Enterprises, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · June 1, 1992 · 44 hours before
- Departed
- DSM · Des Moines, IA
- Destination
- OSH · Oshkosh, WI
- Flight plan
- IFR
- Airport
- C32 · Iowa County
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
- Instrument ratings
- Airplane
- Medical
- Class 3, Valid Medical--w/ waivers/lim
- Seat
- Left
- Toxicology
- Performed
- Flight hours
- 1,139 total · 869 as pilot in command · 65 in the last 90 days · 26 in the last 30 days · 6 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 350° at 6 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 25,000 ft overcast
- Temperature
- 72 °F, dew point 55 °F
- Altimeter
- 30.00 inHg
- Observed at
- LNR, 25 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.