# NTSB WPR22LA365: Mary Alexander JA30 Superstol, N119AM, Groveland, CA, October 1, 2022 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Class 4 · Limited · Final report - Date: September 30, 2022, 17:50 local (Oct 1, 2022, 00:50 UTC) - Place: Groveland, CA · Pine Mountain Lake Airport - Coordinates: 37.861667, -120.17855 - Nearby events: https://openairdocs.org/map.md?lat=37.8617&lon=-120.1786&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Defining event: [Taxi: Nose over/nose down](https://openairdocs.org/ntsb-events/096) - Highest injury: Minor injuries - Injuries: 1 minor - Status: Completed - Report: Approved by Office Director - Investigation class: Class 4 - Basic report with no Prelim publish - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 106046 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR22LA365 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/106046/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=106046 - Page: https://openairdocs.org/ntsb/WPR22LA365 ## Probable cause The pilot's excessive application of brake during an attempt to avoid wildlife while taxing resulted in a nose over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Object/animal/substance: animal(s)/bird(s)](https://openairdocs.org/ntsb-findings/03022045): Environmental issues › Physical environment · Contributed to outcome (probable cause); cases with it: [Mary Alexander JA30 SUPERSTOL, 1 case](https://openairdocs.org/ntsb-findings/03022045/cases.md?model=05633RY), [All aircraft, 358 cases](https://openairdocs.org/ntsb-findings/03022045/cases.md) - [Landing gear system: brake](https://openairdocs.org/ntsb-findings/01023242): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Mary Alexander JA30 SUPERSTOL, 1 case](https://openairdocs.org/ntsb-findings/01023242/cases.md?model=05633RY), [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: [Mary Alexander JA30 SUPERSTOL, 1 case](https://openairdocs.org/ntsb-findings/02063015/cases.md?model=05633RY), [All aircraft, 1,391 cases](https://openairdocs.org/ntsb-findings/02063015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Taxi: Nose over/nose down](https://openairdocs.org/ntsb-events/096) (defining event); cases with it: [Mary Alexander JA30 SUPERSTOL, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05633RY), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that, as he taxied down the runway, he observed a deer on the right side of the airplane. The deer made a quick left turn in front of the airplane and the pilot aggressively applied the brakes. The airplane subsequently nosed over and came to rest inverted. The left wing, wing strut and vertical stabilizer were substantially damaged. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N119AM](https://openairdocs.org/aircraft/N119AM), registered now, S/N JA321-10-13, built 2014 (OpenAirDocs) - Reported make and model: MARY ALEXANDER JA30 SUPERSTOL - Registry model: [Mary Alexander JA30 SUPERSTOL](https://openairdocs.org/model/mary-alexander-ja30-superstol) (registry code 05633RY) (OpenAirDocs) - Registry engine: [Rotax 912S series](https://openairdocs.org/engine/rotax-912s-series) (registry code 55570, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: JA321-10-13 - Year built: 2014 - Airframe hours: 255 - Engines: Rotax 912ULS 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Condition, June 16, 2022 - Departed: E45, Groveland, CA - Destination: Same as departure - Airport: E45, Pine Mountain Lake, runway 27, 3,624 × 50 ft, asphalt - Equipment: Electronic primary flight display, Electronic flight bag or handheld device, ADS-B, Satellite tracking device ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 48; injuries: minor; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: basicmed; last flight review November 9, 2020; seat: left; restraint: 4-point; flight hours: 1,250 total, 175 in this make and model, 1,200 as pilot in command, 7 in the last 90 days, 5 in the last 30 days, 0 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 210° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 41 °F - Altimeter: 29.83 inHg - Observed at: KO22, 15 nm away - METAR: KO22 010055Z AUTO 21004KT 10SM CLR 28/05 A2983 RMK A01 ## 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 20220930021689A](https://openairdocs.org/incident/20220930021689A), Sep 30, 2022: Mary Alexander JA30 SUPERSTOL, Groveland, CA, Substantial damage. On September 30, 2022, the subject aircraft was in the landing rollout on rwy 27 at Pine Mountain Lake Airport (E45). As the PIC was in the rollout he noticed… ## Docket (2 files) The files NTSB released with the investigation on December 30, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=106046. 2.4 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14804325&FileExtension=pdf&FileName=WPR22LA365%206120_Redacted-Rel.pdf - Photo (item 2, PDF, 1 page, 199 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14809706&FileExtension=pdf&FileName=WPR22LA365%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.