ASN Wikibase Occurrence # 178097
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| Date: | Monday 27 July 2015 |
| Time: | 17:24 |
| Type: |  Beechcraft M35 Bonanza |
| Owner/operator: | St. Croix Bonaza Association LLC |
| Registration: | N9CB |
| MSN: | D-6231 |
| Year of manufacture: | 1959 |
| Total airframe hrs: | 6244 hours |
| Engine model: | Continental IO-470-C |
| Fatalities: | Fatalities: 4 / Occupants: 4 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Polk County east of Alden Township near Amery, WI -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | New Richmond, WI (KRNH) |
| Webster, WI (9WN2) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot departed for a personal flight with three passengers in a single-engine airplane near its maximum takeoff weight. About 7 miles northeast of the departure airport, several witnesses noticed the airplane maneuvering. One witness described the airplane in a steep climb, then “making a circle, and then twisting” before dropping nose down and disappearing behind a tree line. Another witness reported seeing the airplane in a nose-down attitude with its wings rocking back and forth. Three other witnesses noticed the airplane spinning before impact. The airplane impacted an open wheat field with a nose-down attitude and low forward velocity, consistent with an aerodynamic stall. Examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.
Probable Cause: The pilot’s loss of airplane control while maneuvering with the airplane near its maximum gross weight, which resulted in the airplane exceeding its critical angle-of-attack and entering an aerodynamic stall.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=9CB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 28-Jul-2015 06:09 | Geno | Added |
| 28-Jul-2015 06:15 | Geno | Updated [Time, Aircraft type, Source] |
| 28-Jul-2015 14:59 | Geno | Updated [Registration, Cn, Operator, Phase, Source, Narrative] |
| 12-Aug-2015 01:18 | Geno | Updated [Location, Phase, Nature, Departure airport, Destination airport, Source] |
| 21-Dec-2016 19:30 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 01-Dec-2017 15:03 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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