# NTSB SEA05CA119: Adkins Ridge Runner II, N825PB, Pocatello, ID, June 19, 2005 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: June 19, 2005, 07:30 local (13:30 UTC) - Place: Pocatello, ID - Coordinates: 42.909721, -112.596107 - Nearby events: https://openairdocs.org/map.md?lat=42.9097&lon=-112.5961&mi=10 - Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report September 13, 2005 - Report: Approved by Office Director - NTSB case key (mKey): 61754 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA05CA119 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/61754/pdf - Page: https://openairdocs.org/ntsb/SEA05CA119 ## Probable cause The pilot's failure to maintain directional control during the takeoff roll, which resulted in an inadvertent ground loop/swerve. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, takeoff - roll/run - qualification, pilot in command - directional control - not maintained, pilot in command(cfi) (cause) - ground loop/swerve - inadvertent, pilot in command(cfi) - Main gear collapsed, takeoff - roll/run - landing gear,main gear - overload ## Analysis The pilot reported that after applying full power for takeoff the airplane turned to the left. He reported that corrective actions were attempted; however the airplane "spun around" and the left main gear collapsed. During a telephone conversation with the NTSB (IIC), the pilot stated he had accumulate approximately 5 hours and fifty landings in tail wheel equipped aircraft, however he had not received a tail wheel endorsement (required by FAR 61.31[I]). The pilot noted in his written report to the NTSB that there were no preaccident mechanical anomalies with the airplane. ## Factual narrative On June 19, 2005, about 0730 mountain daylight time, an experimental category, tail wheel equipped, Adkins Ridge Runner II, N825PB, sustained substantial damage during the takeoff roll at the Pocatello Regional Airport, Pocatello, Idaho. The airplane was being operated as a visual flight rules (VFR) local area flight under the provisions of Title 14 CFR Part 91 when the accident occurred. The solo commercial pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the flight. In a written statement to the National Transportation Safety Board (NTSB), dated June 21, the pilot reported that after applying full power for takeoff the airplane turned to the left. He reported that corrective actions were attempted; however the airplane "spun around" and the left main gear collapsed. During a telephone conversation with the NTSB (IIC) on June 28, the pilot stated he had accumulate approximately 5 hours and fifty landings in tail wheel equipped aircraft, however he had not received a tail wheel endorsement (required by FAR 61.31[I]). The pilot noted in his written report to the NTSB that there were no preaccident mechanical anomalies with the airplane. ## Aircraft - Registration: [N825PB](https://openairdocs.org/deregistered/N825PB-2013-09-13), registration cancelled 2013-09-13, S/N 722811, built 2003 (OpenAirDocs) - Reported make and model: Adkins Ridge Runner II - Registry model: [Adkins David Earl RIDGE RUNNER II](https://openairdocs.org/model/adkins-david-earl-ridge-runner-ii) (registry code 056170F) (OpenAirDocs) - Registry engine: [Rotax SEE BOMBADIER](https://openairdocs.org/engine/rotax-see-bombadier) (registry code 55555, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 722811 - Engines: Rotax 503 reciprocating - Damage: Substantial damage - Flight: Part 91 - Registered owner: David E. Adkins - Airworthiness certificate: Special, Experimental (Special) - Departed: PIH, POCATELLO, ID - Destination: Pocatello, ID - Airport: PIH, Pocatello Regional, runway 21, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 52; private; airplane ratings: single-engine land; medical: class 3; flight hours: 150 total, 150 in this make and model, 9 in the last 90 days, 9 in the last 30 days ## Weather - Conditions: Visual (VMC), Day ## 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 20050619011799A](https://openairdocs.org/incident/20050619011799A), Jun 19, 2005: Adkins RIDGERUNNRII, Pocatello, ID, Substantial damage. (-23) The pilot was cleared for takeoff on runway 21 by the Pocatello, Idaho tower. During the takeoff roll the pilot lost control of the aircraft, it swerved… ## Other investigations on N825PB (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 WPR09LA052](https://openairdocs.org/ntsb/WPR09LA052), Nov 29, 2008: Adkins Ridge Runner II (N825PB), Mulino, OR, substantial damage. Probable cause: The pilot's failure to attain an adequate airspeed that resulted in a stall/mush during the initial climb. Contributing to the accident were the pilot's lack of experience in this make and model… 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.