# NTSB WPR10CA344: Diamond Aircraft Ind DA 20-C1, N376DC, Dutch John, UT, July 10, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 10, 2010, 13:30 local (19:30 UTC) - Place: Dutch John, UT - Coordinates: 40.917778, -109.390556 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=40.9178&lon=-109.3906&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-flare/touchdown: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report October 21, 2010 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: FAA Salt Lake City FSDO - NTSB case key (mKey): 76589 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR10CA344 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76589/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76589 - Page: https://openairdocs.org/ntsb/WPR10CA344 ## Probable cause The pilot’s inadequate compensation for the crosswind conditions and failure to maintain directional control during landing. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Effect on equipment; cases with it: [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Response/compensation (probable cause); cases with it: [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The pilot reported that while flying he began to experience turbulence and fast-developing clouds. As he approached his destination he observed heavy clouds over the airport and diverted to a nearby alternate airport. Upon approaching the alternate airport he observed moderate weather at his original destination and redirected to the original airport. The approach was uneventful; as the airplane touched down a strong crosswind gust struck the airplane and lifted the right wing. Subsequently the left wing struck the ground, resulting in substantial damage. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. ## Factual narrative The pilot reported that while flying he began to experience turbulence and fast-developing clouds. As he approached his destination he observed heavy clouds over the airport and diverted to a nearby alternate airport. Upon approaching the alternate airport he observed moderate weather at his original destination and redirected to the original airport. The approach was uneventful; as the airplane touched down a strong crosswind gust struck the airplane and lifted the right wing. Subsequently the left wing struck the ground, resulting in substantial damage. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. ## Aircraft - Registration: N376DC (not matched to a registry record) - Reported make and model: DIAMOND AIRCRAFT IND INC DA 20-C1 - Category: Airplane - Serial number: C0376 - Airframe hours: 2178 - Engines: CONT MOTOR IO-240-B 125 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: American Flight Center, doing business as Diamond Flight Center - Registered owner: Allairus LLC - Airworthiness certificate: Standard, Utility - Last inspection: 100 hour, June 28, 2010, 32 hours before - Departed: U77, Spanish Fork, UT - Destination: 33U, Dutch Jones, UT - Airport: 33U, Dutch John, runway 11, 6,000 × 60 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 64; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review May 17, 2010; flight hours: 100 total, 80 in this make and model, 100 as pilot in command, 35 in the last 90 days, 10 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 84 °F, dew point 39 °F - Altimeter: 30.12 inHg - Observed at: VEL, 33 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 20100710036559A](https://openairdocs.org/incident/20100710036559A), Jul 10, 2010: Diamond Air DA 20-C1, Dutch John, UT, Substantial damage. Upon landing, pilot encountered gusty winds from unforcasted thunderstorm that resulted in hail. This combined with inexperience exceeded his abilities… ## Docket (1 files) The files NTSB released with the investigation on August 3, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76589. 425 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 425 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40333570&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.