# NTSB WPR21LA147: Aviat A-1, N29HU, Ogden, UT, March 27, 2021 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Limited · Final report - Date: March 27, 2021, 17:45 local (23:45 UTC) - Place: Ogden, UT - Coordinates: 41.19507, -112.01219 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=41.1951&lon=-112.0122&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - NTSB case key (mKey): 102828 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR21LA147 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/102828/pdf - Page: https://openairdocs.org/ntsb/WPR21LA147 ## Probable cause The pilot's failure to maintain directional control during the landing roll with a light crosswind, which resulted in a runway excursion and collision with terrain. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Aviat A-1, 3 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=2210302), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Aviat A-1, 4 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=2210302), [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 operation; cases with it: [Aviat A-1, 1 case](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=2210302), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/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: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Aviat A-1, 6 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=2210302), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) ## Analysis The pilot of the tailwheel-equipped airplane reported that, he was landing with a light crosswind from the left. The main landing gear touched down followed by the tailwheel and the pilot began applying the brakes while maintaining back pressure on the control stick. As the pilot increased brake pressure, the airplane veered to the left. The pilot increased power and added right rudder control, however, the airplane exited the runway. The right main landing gear collapsed, and the right wing was substantially damaged when it struck the ground. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N29HU](https://openairdocs.org/aircraft/N29HU), registered now, S/N 1381 (OpenAirDocs) - Reported make and model: AVIAT AIRCRAFT INC A-1 - Registry model: [Aviat A-1](https://openairdocs.org/model/aviat-a-1) (registry code 2210400) (OpenAirDocs) - Registry engine: [Lycoming 0-360-A1D](https://openairdocs.org/engine/lycoming-0-360-a1d) (registry code 41504, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1381 - Year built: 1997 - Airframe hours: 2912.3 - Engines: LYCOMING 0-360-A1D 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Carper Flight Service, LLC - Airworthiness certificate: Standard, Normal - Last inspection: Annual, October 17, 2020 - Destination: Same as departure - Airport: OGD, Ogden-Hinckley, runway 17/35, 5,195 × 100 ft, asphalt - Equipment: ADS-B ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 35; injuries: none; commercial; airplane ratings: single-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, without waivers/limitations; last flight review February 26, 2021; seat: front; flight hours: 604 total, 8.4 in this make and model, 560.9 as pilot in command, 61.6 in the last 90 days, 7 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 52 °F, dew point 27 °F - Altimeter: 30.35 inHg - Observed at: KOGD - METAR: KOGD 272253Z VRB03KT 10SM CLR 11/M03 A3035 RMK AO2 SLP270 T01111028 ## 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 20210327005779A](https://openairdocs.org/incident/20210327005779A), Mar 27, 2021: Aviat Aircraft Inc A-1, Ogden, UT, Substantial damage. On March 27, 2021 the pilot took off from Ogden, Utah airport (kogd) on a personal sightseeing flight. At approximately 1745 that day, he returned to the same… ## Other investigations on N29HU (1) 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. - [NTSB DEN02LA024](https://openairdocs.org/ntsb/DEN02LA024), Feb 11, 2002: Aviat A-1A (N29HU), Afton, WY, substantial damage. Probable cause: The pilot's failure to maintain directional control, which resulted in a collision with a snow bank. Contributing factors were the icy runway and the snow bank. 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.