# NTSB CHI05CA262: Cessna 310Q, N75SM, Boscobel, WI, September 9, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: September 9, 2005, 17:30 local (22:30 UTC) - Place: Boscobel, WI - Coordinates: 43.160278, -90.675552 - Nearby events: https://openairdocs.org/map.md?lat=43.1603&lon=-90.6756&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report December 20, 2005 - Report: Approved by Office Director - Parties: Milwaukee, WI FSDO - NTSB case key (mKey): 62469 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI05CA262 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/62469/pdf - Page: https://openairdocs.org/ntsb/CHI05CA262 ## Probable cause The pilot's misjudged distance/altitude which resulted in an undershoot. A related factor was the pilot's diverted attention due to the open cabin door. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Undershoot, landing - flare/touchdown - distance/altitude - misjudged, pilot in command (cause) - diverted attention, pilot in command (contributing factor) - On ground/water collision with object, landing - roll - terrain condition - runway (contributing factor) - Main gear collapsed, landing - roll - landing gear,main gear - overload ## Analysis The airplane experienced a main gear collapse following an undershoot landing. The pilot was returning to land after the aircraft's entry door opened on takeoff. The inspector stated the airplane touched down on sandy soil approximately 30 feet prior to the approach end of runway 25. He stated the right main gear cocked sideways when the airplane contacted the runway which was approximately 3 inches higher then the terrain. The airplane continued onto the runway and the right main gear collapsed approximately 400 feet past the approach end of the runway. The airplane then traveled off the right side of the runway where it came to rest. ## Factual narrative On September 9, 2005, at 1730 central daylight time, a Cessna 310Q, N75SM, experienced a main gear collapse following an undershoot landing on runway 25 (5,000 feet by 75 feet, asphalt) at the Boscobel Airport (OVS), Boscobel, Wisconsin. The private pilot was not injured. The airplane was substantially damaged. The Title 14 Code of Federal Regulations Part 91 personal flight was operating in visual meteorological conditions without a flight plan. The flight originated from OVS at approximately 1725. According to an inspector from the Federal Aviation Administration Milwaukee Flight Standards District Office, the pilot was returning to land at OVS after the aircraft's entry door opened on takeoff. The inspector stated the airplane touched down on sandy soil approximately 30 feet prior to the approach end of runway 25. He stated the right main gear cocked sideways when the airplane contacted the runway which was approximately 3 inches higher then the terrain. The airplane continued onto the runway and the right main gear collapsed approximately 400 feet past the approach end of the runway. The airplane then traveled off the right side of the runway where it came to rest. ## Aircraft - Registration: [N75SM](https://openairdocs.org/deregistered/N75SM-2013-04-18), registration cancelled 2013-04-18, S/N 310Q0448, built 1972 (OpenAirDocs) - Reported make and model: Cessna 310Q - Registry model: [Cessna 310Q](https://openairdocs.org/model/cessna-310q) (registry code 2074242) (OpenAirDocs) - Registry engine: [Continental I0-470 series](https://openairdocs.org/engine/continental-i0-470-series) (registry code 17027, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 0448 - Engines: Continental IO-520-E reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Samuel F. Hutchinson - Airworthiness certificate: Standard, Normal - Departed: Boscobel, WI - Destination: Boscobel, WI ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 62; private; airplane ratings: single-engine land, multi-engine land; medical: class 3, with waivers/limitations; flight hours: 1,788 total, 386 in this make and model, 8 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20050909024709A](https://openairdocs.org/incident/20050909024709A), Sep 9, 2005: Cessna 310Q, Boscobel, WI, Substantial damage. (-23) Cessna 310, N75SM sustained substantial damage to its right wing, propeller, right main gear and horizontal stabilizer after the right main gear… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.