# NTSB GAA20CA004: Reed Mike Smiths Super CUB, N677M, Triangle, ID, October 5, 2019 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: October 5, 2019, 09:15 local (15:15 UTC) - Place: Triangle, ID - Coordinates: 42.750278, -116.67472 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.7503&lon=-116.6747&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report May 21, 2020 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 100376 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA20CA004 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/100376/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=100376 - Page: https://openairdocs.org/ntsb/GAA20CA004 ## Probable cause The pilot's excessive use of brakes during the landing roll, which resulted in a nose-over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Performance/control parameters: surface speed/braking](https://openairdocs.org/ntsb-findings/01062045): Aircraft › Aircraft oper/perf/capability · Capability exceeded (probable cause); cases with it: [Reed Mike SMITHS SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/01062045/cases.md?model=056177I), [All aircraft, 238 cases](https://openairdocs.org/ntsb-findings/01062045/cases.md) - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Reed Mike SMITHS SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=056177I), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Landing gear system: brake](https://openairdocs.org/ntsb-findings/01023242): Aircraft › Aircraft systems · Incorrect use/operation (probable cause); cases with it: [Reed Mike SMITHS SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/01023242/cases.md?model=056177I), [All aircraft, 297 cases](https://openairdocs.org/ntsb-findings/01023242/cases.md) - [Runway/land/takeoff/taxi surface: snow/slush/ice covered surface](https://openairdocs.org/ntsb-findings/03023015): Environmental issues › Physical environment · Effect on operation; cases with it: [Reed Mike SMITHS SUPER CUB, 1 case](https://openairdocs.org/ntsb-findings/03023015/cases.md?model=056177I), [All aircraft, 219 cases](https://openairdocs.org/ntsb-findings/03023015/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Reed Mike SMITHS SUPER CUB, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=056177I), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Reed Mike SMITHS SUPER CUB, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=056177I), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot reported that, during the landing roll on a dirt airstrip, the airplane skidded on a thin layer of frost on the dirt. He applied the brakes, and as the airplane transitioned to dry gravel, it nosed over. He added that he believed that the braking pressure he applied was excessive for the gravel portion of the airstrip. The airplane sustained substantial damage to the right-wing lift strut and rudder. 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 of the tailwheel-equipped airplane reported that, during the landing roll on a dirt airstrip, the airplane skidded on a thin layer of frost on the dirt. He applied the brakes, and as the airplane transitioned to dry gravel, the airplane nosed over. He added that he believed that the braking pressure he applied was excessive for the dry portion of the airstrip. The airplane sustained substantial damage to the right wing lift strut and rudder. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. ## Aircraft - Registration: [N677M](https://openairdocs.org/aircraft/N677M), registered now, S/N 003, built 2005 (OpenAirDocs) - Reported make and model: Reed Mike SMITHS SUPER CUB (No Series) - Registry model: [Reed Mike SMITHS SUPER CUB](https://openairdocs.org/model/reed-mike-smiths-super-cub) (registry code 056177I) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 003 - Year built: 2005 - Airframe hours: 1046 - Engines: Lycoming O-360 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, June 16, 2019 - Departed: EUL, Caldwell, ID - Destination: 2ID3, Triangle, ID - Airport: 2ID3, Josephine Ranch, runway 32, 2,500 × 40 ft, gravel - Equipment: ADS-B, Electronic primary flight display ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 49; injuries: none; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review March 6, 2018; seat: center; flight hours: 2,124.1 total, 368 in this make and model, 2,124.1 as pilot in command, 86.1 in the last 90 days, 8.3 in the last 30 days, 1.3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 90° at 5 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 34 °F, dew point 34 °F - Altimeter: 30.32 inHg - Observed at: KMUO, 40 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 20191005019029A](https://openairdocs.org/incident/20191005019029A), Oct 5, 2019: Reed Mike SMITHS SUPER CUB, Triangle, ID, Substantial damage. On October 5, 2019, at approximately 0915 local time, an experimental cub ended up inverted during landing rollout at Josephine Ranch Airport (2ID3). The PIC… ## Docket (3 files) The files NTSB released with the investigation on November 26, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=100376. 3.7 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 2.2 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40478401&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Record of Conversation - Pilot (item 2, .PDF, 67 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40478402&FileExtension=.PDF&FileName=Record%20of%20Conversation%20-%20Pilot-Master.PDF - Accident Photo (item 3, .PDF, 1 photo, 1.4 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40478403&FileExtension=.PDF&FileName=Accident%20Photo-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.