# NTSB WPR10CA378: Porter James Grant Superior CUB, N97RP, Caldwell, ID, July 31, 2010 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: July 30, 2010, 19:00 local (Jul 31, 2010, 01:00 UTC) - Place: Caldwell, ID - Coordinates: 43.638332, -116.634719 - Nearby events: https://openairdocs.org/map.md?lat=43.6383&lon=-116.6347&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing-flare/touchdown: Loss of control on ground](https://openairdocs.org/ntsb-events/230) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report December 20, 2010 - Report: Approved by Office Director - NTSB office: Western Pacific Region - Parties: Federal Aviation Administration - NTSB case key (mKey): 76816 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR10CA378 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/76816/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=76816 - Page: https://openairdocs.org/ntsb/WPR10CA378 ## Probable cause The pilot’s failure to maintain directional control during landing. ## 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: [Porter James Grant SUPERIOR CUB, 1 case](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=05603XB), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Performance/control parameters: directional control](https://openairdocs.org/ntsb-findings/01062020): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Porter James Grant SUPERIOR CUB, 1 case](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=05603XB), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Landing-flare/touchdown: Loss of control on ground](https://openairdocs.org/ntsb-events/230) (defining event); cases with it: [Porter James Grant SUPERIOR CUB, 1 case](https://openairdocs.org/ntsb-events/230/sequence.md?model=05603XB), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing-flare/touchdown: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Porter James Grant SUPERIOR CUB, 1 case](https://openairdocs.org/ntsb-events/300/sequence.md?model=05603XB), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) ## Analysis The pilot reported that as the tailwheel-equipped airplane touched down it began to veer to the left. The pilot added full right rudder and tapped the right brake; however, the airplane ground-looped and exited the runway into the dirt. The right wing struck the ground and was substantially damaged. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. ## Factual narrative The pilot reported that as the tail wheel-equipped airplane touched down it began to veer to the left. The pilot added full right rudder and tapped the right brake; however, the airplane ground looped and exited the runway into the dirt. The right wing struck the ground and was substantially damaged. The pilot reported no mechanical failures or malfunctions with the airframe or engine prior to the accident. In a written statement, the pilot reported that the accident could have been prevented by receiving additional instruction with a certificated flight instructor in the airplane make and model. ## Aircraft - Registration: [N97RP](https://openairdocs.org/aircraft/N97RP), registered now, S/N PR-18-1, built 1998 (OpenAirDocs) - Reported make and model: PORTER JAMES GRANT SUPERIOR CUB - Registry model: [Porter James Grant SUPERIOR CUB](https://openairdocs.org/model/porter-james-grant-superior-cub) (registry code 05603XB) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: PR-18-1 - Engines: LYCOMING O&VO-360 Seri 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Jeremy R. Milless - Registered owner: Jeremy R. Milless - Airworthiness certificate: Special, Experimental (Special) - Departed: KEUL, Caldwell, ID - Destination: KEUL, Caldwell, ID - Flight plan: VFR - Airport: KEUL, Caldwell Industrial Airport, runway 12, 5,500 × 100 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 33; injuries: none; private; airplane ratings: single-engine land; medical: class 3, without waivers/limitations; last flight review September 9, 2009; seat: front; flight hours: 199 total, 7 in this make and model, 135 as pilot in command, 7 in the last 90 days, 7 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 340° at 7 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 99 °F, dew point 45 °F - Altimeter: 29.79 inHg - Observed at: KBOI, 21 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 20100730039009A](https://openairdocs.org/incident/20100730039009A), Jul 30, 2010: Porter Jame SUPERIOR CU, Caldwell, ID, Substantial damage. The pilot was landing runway 12, the approach was stable. The pilot performed a 3 point landing and bounced upon touchdown. The aircraft then swerved to the… ## Other investigations on N97RP (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 CEN13CA033](https://openairdocs.org/ntsb/CEN13CA033), Oct 27, 2012: Porter James Grant Superior CUB (N97RP), Beechgrove, IN, substantial damage. Probable cause: The pilot’s failure to maintain clearance from trees during takeoff from a short field. ## Docket (1 files) The files NTSB released with the investigation on August 16, 2010, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=76816. 470 KB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 470 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40334863&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Redacted.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.