# NTSB GAA18CA477: Davidson, Ronald A. Avid, N833RD, Moab, UT, May 19, 2018 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Data collection · Final report - Date: May 19, 2018, 10:00 local (16:00 UTC) - Place: Moab, UT - Coordinates: 38.533332, -109.983329 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=38.5333&lon=-109.9833&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed, report June 10, 2019 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 98019 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA18CA477 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/98019/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=98019 - Page: https://openairdocs.org/ntsb/GAA18CA477 ## Probable cause The pilot's excessive brake application and delayed remedial action, which resulted in a nose over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Landing gear system: brake](https://openairdocs.org/ntsb-findings/01023242): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Davidson Ronald A AVID MAGNUM, 1 case](https://openairdocs.org/ntsb-findings/01023242/cases.md?model=05635O5), [All aircraft, 297 cases](https://openairdocs.org/ntsb-findings/01023242/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: [Davidson Ronald A AVID MAGNUM, 1 case](https://openairdocs.org/ntsb-findings/02063015/cases.md?model=05635O5), [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 · Pilot (probable cause); cases with it: [Davidson Ronald A AVID MAGNUM, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=05635O5), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) - [Info processing/decision: identification/recognition](https://openairdocs.org/ntsb-findings/02041510): Personnel issues › Action/decision · Pilot; cases with it: [Davidson Ronald A AVID MAGNUM, 1 case](https://openairdocs.org/ntsb-findings/02041510/cases.md?model=05635O5), [All aircraft, 559 cases](https://openairdocs.org/ntsb-findings/02041510/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: Miscellaneous/other](https://openairdocs.org/ntsb-events/900); cases with it: [Davidson Ronald A AVID MAGNUM, 1 case](https://openairdocs.org/ntsb-events/900/sequence.md?model=05635O5), [All aircraft, 1,556 cases](https://openairdocs.org/ntsb-events/900/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Davidson Ronald A AVID MAGNUM, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05635O5), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot in the tailwheel-equipped airplane reported that, during the landing roll on the dirt surface, he “pinned” the tailwheel on the ground and that he then applied aft stick to keep the tailwheel on the ground. However, he was concerned about the condition of the last third of the runway, and he chose to stop before it. He reported that he applied the brakes "a little harder than normal" and that the tail rose off the ground. He released his brake application, but the tail continued to rise, and the airplane nosed over. The airplane sustained substantial damage to the vertical stabilizer and the rudder. The pilot reported that there was still had about 1,000 ft of runway remaining but that he failed to recognize and correct for the momentum of the rising tail in a timely manner. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Factual narrative The pilot in the tailwheel-equipped airplane reported that during the landing roll on the dirt surface, he pinned the tailwheel on the ground, and then he applied aft stick to keep the tailwheel on the ground. However, he was concerned about the condition of the last 1/3 of the runway, and he elected to stop prior to. He reported that he applied the brakes "a little harder than normal" and the tail came off the ground. He released his brake application, but the tail continued to rise, and the airplane nosed over. Substantial damage was sustained to the vertical stabilizer and the rudder. The pilot reported that he still had about 1,000ft of runway remaining, but he failed to recognize and correct the momentum of the rising tail in a timely manner. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N833RD](https://openairdocs.org/deregistered/N833RD-2019-09-06), registration cancelled 2019-09-06, S/N M76, built 2017 (OpenAirDocs) - Reported make and model: Davidson, Ronald A. Avid (Magnum) - Registry model: [Davidson Ronald A AVID MAGNUM](https://openairdocs.org/model/davidson-ronald-a-avid-magnum) (registry code 05635O5) (OpenAirDocs) - Registry engine: [Lycoming IO-360-C1C](https://openairdocs.org/engine/lycoming-io-360-c1c) (registry code 41832, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: M76 - Year built: 2017 - Airframe hours: 217.1 - Engines: Lycoming IO-360 200 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, April 12, 2018 - Departed: KCNY, Moab, UT - Destination: UT75, Moab, UT - Airport: UT75, Mineral Canyon Strip, runway 14, 2,000 × 40 ft, dirt - Equipment: ADS-B, Electronic flight bag or handheld device ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 44; injuries: minor; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, without waivers/limitations; last flight review November 9, 2016; seat: left; restraint: 3-point; toxicology performed; flight hours: 1,195.1 total, 87.6 in this make and model, 926.9 as pilot in command, 21.3 in the last 90 days, 12.6 in the last 30 days, 8.6 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 66 °F, dew point 36 °F - Altimeter: 29.95 inHg - Observed at: KCNY, 17 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 20180519005599A](https://openairdocs.org/incident/20180519005599A), May 19, 2018: Davidson Ronald A AVID MAGNUM, Moab, UT, Substantial damage. Conventional gear aircraft. Tail was initially planted using full aft stick. Pilot applied to much braking power, causing tail to rise. Pilot was unable to… ## Docket (2 files) The files NTSB released with the investigation on March 25, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=98019. 4.0 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40471353&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Photo (item 2, .PDF, 1 photo, 90 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40471354&FileExtension=.PDF&FileName=Photo-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.