# NTSB ANC20CA078: Greg Miller GOT Rocks, N9015U, Minchumina, AK, August 5, 2020 - Type: NTSB accident investigation - Classification: Accident · No injuries · Class 4 · Data collection · Final report - Date: August 5, 2020, 11:55 local (19:55 UTC) - Place: Minchumina, AK - Coordinates: 63.526668, -150.795272 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=63.5267&lon=-150.7953&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: Alaska Regional Office - NTSB case key (mKey): 101753 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC20CA078 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/101753/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=101753 - Page: https://openairdocs.org/ntsb/ANC20CA078 ## Probable cause The pilot's failure to maintain directional control during landing in gusting wind conditions, which resulted in an impact with a large hole and a nose-over. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Use of equip/info: aircraft control](https://openairdocs.org/ntsb-findings/02063040): Personnel issues › Task performance · Pilot (probable cause); cases with it: [Miller Gregory Scott GOT ROCKS, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05627KK), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Wind: gusts](https://openairdocs.org/ntsb-findings/03034045): Environmental issues › Conditions/weather/phenomena · Effect on operation (probable cause); cases with it: [Miller Gregory Scott GOT ROCKS, 1 case](https://openairdocs.org/ntsb-findings/03034045/cases.md?model=05627KK), [All aircraft, 1,199 cases](https://openairdocs.org/ntsb-findings/03034045/cases.md) - [Runway/land/takeoff/taxi surface](https://openairdocs.org/ntsb-findings/03023000): Environmental issues › Physical environment · Effect on equipment (probable cause); cases with it: [Miller Gregory Scott GOT ROCKS, 1 case](https://openairdocs.org/ntsb-findings/03023000/cases.md?model=05627KK), [All aircraft, 253 cases](https://openairdocs.org/ntsb-findings/03023000/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: [Miller Gregory Scott GOT ROCKS, 2 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=05627KK), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-landing roll: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Miller Gregory Scott GOT ROCKS, 1 case](https://openairdocs.org/ntsb-events/096/sequence.md?model=05627KK), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The pilot was landing his tailwheel and tundra tire-equipped airplane on a remote off-airport landing site. While on short final approach and just before touchdown a gust of wind pushed the airplane to the left. The airplane touched down about five ft left of his intended touchdown point and the left main tire impacted a large hole. The airplane subsequently nosed over sustaining substantial damage to the right wing, right lift strut and rudder. The pilot reported no preaccident mechanical failures or malfunctions that would have precluded normal operations. In the recommendation section of the NTSB Accident/Incident Reporting Form 6120.1, the pilot stated that he knew the winds were erratic in the area, and the accident may have been prevented if he had selected another landing site where the winds were more predictable. ## Aircraft - Registration: [N9015U](https://openairdocs.org/aircraft/N9015U), registered now, S/N 1, built 2008 (OpenAirDocs) - Reported make and model: GREG MILLER GOT ROCKS (No Series) - Registry model: [Miller Gregory Scott GOT ROCKS](https://openairdocs.org/model/miller-gregory-scott-got-rocks) (registry code 05627KK) (OpenAirDocs) - Registry engine: [Lycoming O-360-C1A](https://openairdocs.org/engine/lycoming-o-360-c1a) (registry code 42280, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 1 - Year built: 2008 - Airframe hours: 725.3 - Engines: Lycoming O-360 C1A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Airworthiness certificate: Special, Experimental (Special); Standard, Normal - Last inspection: Condition, October 2, 2019 - Departed: PAMR, Anchorage, AK - Destination: Minchumina, AK - Equipment: Handheld GPS ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 56; injuries: none; private, commercial; airplane ratings: single-engine sea, single-engine land; medical: class 2, with waivers/limitations; last flight review March 4, 2020; seat: front; restraint: 4-point; flight hours: 3,613 total, 1,562 in this make and model, 3,554 as pilot in command, 33.7 in the last 90 days, 14.3 in the last 30 days, 4.3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Visibility: 10 statute miles - Temperature: 61 °F ## 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 20200805012889A](https://openairdocs.org/incident/20200805012889A), Aug 5, 2020: Miller Gregory Scott GOT ROCKS, Kantishna, AK, Substantial damage. Pilot stated he flew from anchorage to his cabin located 50 miles se of lake minchumina. While landing at cabin strip on tundra, pilot stated he got a gust of… ## Other investigations on N9015U (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 ANC11CA011](https://openairdocs.org/ntsb/ANC11CA011), Jan 29, 2011: Miller Gregory Scott GOT Rocks (N9015U), Anchorage, AK, substantial damage. Probable cause: The pilot's selection of an unsuitable landing/takeoff area with an unfavorable wind. ## Docket (1 files) The files NTSB released with the investigation on September 8, 2021, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=101753. 4.0 MB in all. - Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 9 pages, 4.0 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=11342392&FileExtension=pdf&FileName=6120%20-%20DMS_Redacted-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.