# NTSB WPR21LA178: Diamond Aircraft Ind DA 42, N350TS, Brigham City, UT, April 27, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: April 27, 2021, 15:45 local (21:45 UTC) - Place: Brigham City, UT · Airport - Coordinates: 41.554306, -112.06225 - Nearby events: https://openairdocs.org/map.md?lat=41.5543&lon=-112.0623&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - Parties: FAA - NTSB case key (mKey): 102988 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA178 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102988/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=102988 - Page: https://openairdocs.org/ntsb/WPR21LA178 ## Probable cause The student pilot's unintentional selection of raising the landing gear instead of the flaps during a touch-and-go landing, and the flight instructor's delayed remedial action, which resulted in the landing gear retracting during the landing roll. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Landing gear system: gear extension and retract sys](https://openairdocs.org/ntsb-findings/01023230): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Diamond Aircraft Ind DA 42, 1 case](https://openairdocs.org/ntsb-findings/01023230/cases.md?model=2990104), [All aircraft, 416 cases](https://openairdocs.org/ntsb-findings/01023230/cases.md) - [Use of equip/info: use of equip/system](https://openairdocs.org/ntsb-findings/02063015): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Diamond Aircraft Ind DA 42, 1 case](https://openairdocs.org/ntsb-findings/02063015/cases.md?model=2990104), [All aircraft, 1,391 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Instructor/check pilot (probable cause); cases with it: [Diamond Aircraft Ind DA 42, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=2990104), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) - [Attention/monitoring: monitoring other person](https://openairdocs.org/ntsb-findings/02021535): Personnel issues › Psychological · Instructor/check pilot (probable cause); cases with it: [Diamond Aircraft Ind DA 42, 1 case](https://openairdocs.org/ntsb-findings/02021535/cases.md?model=2990104), [All aircraft, 200 cases](https://openairdocs.org/ntsb-findings/02021535/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Diamond Aircraft Ind DA 42, 2 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=2990104), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) - [Landing-landing roll: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Diamond Aircraft Ind DA 42, 1 case](https://openairdocs.org/ntsb-events/300/sequence.md?model=2990104), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The flight instructor of the multi-engine, retractable landing gear airplane reported that, while conducting a touch-and-go landing with the student pilot at the controls, during the landing roll, the student pilot intended to raise the flaps, but instead raised the landing gear lever from the down to the up position. The right main landing gear retracted, the right wing impacted the runway surface and the airplane veered right. The flight instructor observed that the landing gear lever was in the "up" position and immediately put the lever to the "down" position. The left main landing gear partially retracted, and the airplane exited the right side of the runway. The airplane sustained substantial damage to the rudder. The flight instructor reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N350TS](https://openairdocs.org/aircraft/N350TS), registered now, S/N 42.061, built 2005 (OpenAirDocs) - Reported make and model: DIAMOND AIRCRAFT IND GMBH DA 42 - Registry model: [Diamond Aircraft Ind DA 42](https://openairdocs.org/model/diamond-aircraft-ind-da-42) (registry code 2990004) (OpenAirDocs) - Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs) - Category: Airplane - Serial number: 42.061 - Year built: 2005 - Airframe hours: 5336 - Engines: Continental TAE 125-02-99 135 horsepower reciprocating; Continental TAE 125-02-99 135 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Utah State University - Registered owner: Utah State University - Airworthiness certificate: Standard, Normal - Last inspection: Annual, April 9, 2021, 72 hours before - Departed: KLGU, Logan, UT - Destination: Same as departure - Airport: BMC, Brigham City Rgnl, runway 35, 8,900 × 100 ft, asphalt - Equipment: Electronic primary flight display, Stall warning system, ADS-B, Auto-pilot, Electronic multifunction display ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 24; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review September 26, 2020; seat: left; restraint: 3-point; flight hours: 200 total, 27 in this make and model, 120 as pilot in command, 28 in the last 90 days, 19 in the last 30 days - Flight instructor; age 22; injuries: none; commercial, flight instructor; airplane ratings: single-engine sea, single-engine land; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review January 21, 2021; seat: rear; restraint: 3-point; flight hours: 546 total, 121 in this make and model, 487 as pilot in command, 114 in the last 90 days, 60 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 330° at 12 knots, gusting 21 - Visibility: 10 statute miles - Temperature: 57 °F, dew point 36 °F - Altimeter: 29.95 inHg - Observed at: KBMC - METAR: KBMC 272135Z AUTO 33012G21KT 10SM SCT055 SCT065 14/02 A2995 RMK AO1 T01370015 ## 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 20210427003979A](https://openairdocs.org/incident/20210427003979A), Apr 27, 2021: Diamond Aircraft Ind Gmbh DA 42, Brigham City, UT, Substantial damage. Pilot in control(student) was not multi engine qualified. Pilot in command was CFI. Student was practicing touch and go on airstrip. On second landing, student… ## Docket (3 files) The files NTSB released with the investigation on August 3, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=102988. 2.5 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 1.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12259360&FileExtension=pdf&FileName=WPR21LA178%20CFI%206120_Redacted-Rel.pdf - Record of e-mail correspondence (student pilot) (item 2, PDF, 1 page, 166 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12257243&FileExtension=pdf&FileName=Record%20of%20e-mail%20correspondence%20(Student%20Pilot)-Rel.pdf - Damage photo (item 3, PDF, 1 page, 756 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=12215730&FileExtension=pdf&FileName=Damage%20Photo-Rel.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.