# NTSB ERA14LA358: Winder Robert S VP1, N3831W, Grove City, PA, July 25, 2014 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: July 25, 2014, 11:08 local (15:08 UTC) - Place: Grove City, PA - Coordinates: 41.14611, -80.167778 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.1461&lon=-80.1678&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Defining event: [Approach-VFR pattern final: Miscellaneous/other](https://openairdocs.org/ntsb-events/900) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report June 20, 2017 - Report: Approved by Office Director - NTSB office: Eastern Region Aviation - Parties: FAA/FSDO - NTSB case key (mKey): 89737 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA14LA358 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/89737/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=89737 - Page: https://openairdocs.org/ntsb/ERA14LA358 ## Probable cause A collision with terrain during the landing approach for reasons that could not be determined based on available information. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Unknown/Not determined (probable cause); cases with it: [Winder Robert S VPI, 1 case](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=05628L4), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Approach-VFR pattern final: Miscellaneous/other](https://openairdocs.org/ntsb-events/900) (defining event); cases with it: [Winder Robert S VPI, 1 case](https://openairdocs.org/ntsb-events/900/sequence.md?model=05628L4), [All aircraft, 1,556 cases](https://openairdocs.org/ntsb-events/900/sequence.md) ## Analysis A witness saw the experimental amateur-built airplane as it performed takeoffs and landings in the airport traffic pattern. After completing several circuits, she again saw the airplane on final approach to land about ¼-mile from the runway threshold. The airplane suddenly "jerked" left, away from the runway centerline, and continued that track in a shallow descent until it impacted a berm off the left side of the runway about 750 ft beyond the threshold. The witness reported that, before impact, the engine sound was smooth and continuous and did not change in pitch or intensity. The engine sound continued uninterrupted until impact. The private pilot was unable to recall any details of the accident. Postaccident examination of the wreckage revealed no evidence of any preimpact mechanical malfunctions or failures of the airframe or engine that would have precluded normal operation; therefore, the reason for the deviation from the approach path and subsequent impact with terrain could not be determined. ## Factual narrative On July 25, 2014, about 1108 eastern daylight time, an experimental amateur-built VP1, N3831W, was substantially damaged when it impacted terrain while attempting to land at Grove City Airport (29D), Grove City, Pennsylvania. The private pilot was seriously injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local personal flight, which was conducted under the provisions of 14 Code of Federal Regulations Part 91.According to an employee of the fixed base operator at 29D, the accident pilot was performing takeoffs and landings in the airport traffic pattern, and had completed three to four circuits when the accident occurred. She watched as the airplane was on final approach to land on runway 28; about 1/4-mile from the runway threshold, it suddenly "jerked" left, away from the runway centerline. The airplane continued on that track in a shallow descent until it impacted a berm about 200 feet south of the runway, about 750 feet beyond the threshold. Prior to impact, the engine sound was smooth and continuous, and did not change in pitch or intensity. The engine sound continued uninterrupted until impact. Medevac personnel based at the airport subsequently responded to the accident site to render assistance to the pilot. Due to the nature of the injuries he sustained during the accident, the pilot was unable to recall any details of the accident. The pilot, age 83, held a private pilot certificate with a rating for airplane single-engine land. His most recent Federal Aviation Administration third-class medical certificate was issued in June 2010 with the limitation "must wear corrective lenses." He also held an experimental aircraft builder repairman certificate for the accident airplane. None of the pilot's personal flight logs were available for inspection and his total flight experience could not be determined. The airplane's airworthiness certificate was issued in December 2010. It was equipped with a Volkswagen 65 horsepower engine driving a Heagy fixed-pitch propeller. The airplane's most recent condition inspection was completed by the pilot on July 18, 2014, with no anomalies noted. Federal Aviation Administration inspectors examined the wreckage after it was recovered from the accident site. During the examination, the inspectors confirmed flight control continuity for the elevator and ailerons. The rudder pedals had separated from the fuselage floor during impact, but were otherwise intact and connected to the rudder. The engine was separated from the fuselage, though the engine control cables remained connected and intact. Continuity of the engine power and valvetrain was confirmed through rotation of the crankshaft, and thumb compression was noted on all cylinders. The spark plugs exhibited a clean appearance with a small amount of external corrosion. Fuel and a small quantity of dirt were found in the fuel filter and in the carburetor float bowl. ## Aircraft - Registration: [N3831W](https://openairdocs.org/deregistered/N3831W-2018-01-04), registration cancelled 2018-01-04, S/N 01, built 2010 (OpenAirDocs) - Reported make and model: WINDER ROBERT S VP1 - Registry model: [Winder Robert S VPI](https://openairdocs.org/model/winder-robert-s-vpi) (registry code 05628L4) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 01 - Year built: 2010 - Airframe hours: 3.7 - Engines: Volkswagen 65 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, July 18, 2014, 1 hours before - Departed: 29D, Grove City, PA - Destination: 29D, Grove City, PA - Airport: 29D, Grove City, runway 28, 4,500 × 75 ft, asphalt - Equipment: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 83; injuries: serious; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; seat: single; flight hours: 3 in this make and model ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 68 °F, dew point 52 °F - Altimeter: 30.13 inHg - Observed at: UCP, 13 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 (OpenAirDocs). - [Accident 20140725024399A](https://openairdocs.org/incident/20140725024399A), Jul 25, 2014: Winder Robert S VPI, Mercer, PA, Substantial damage. 7/25/2014 N3831W crashed at Grove City Airport K29D at 1100EST. Wreckage was located on airport property, in a drainage ditch approximately 12FT deep about… ## Docket (5 files) The files NTSB released with the investigation on May 2, 2017, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=89737. 5.9 MB in all. - FAA Inspector's Statement (item 1, .PDF, 11 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40451625&FileExtension=.PDF&FileName=FAA%20Inspector%27s%20Statement-Master.PDF - Record of Correspondence - FAA Inspector (item 2, .PDF, 54 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40451626&FileExtension=.PDF&FileName=Record%20of%20Correspondence%20-%20FAA%20Inspector-Master.PDF - Witness Statement (item 3, .PDF, 90 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40451627&FileExtension=.PDF&FileName=Witness%20Statement-Master.PDF - Maintenance Records (item 4, .PDF, 2.8 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40451628&FileExtension=.PDF&FileName=Maintenance%20Records-Master.PDF - Wreckage Pictures (item 5, .PDF, 2 photos, 2.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40451629&FileExtension=.PDF&FileName=Wreckage%20Pictures-Master.PDF 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.