# NTSB GAA19CA056: Guimbal Cabri, N370PA, Newberg, OR, November 13, 2018 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: November 13, 2018, 09:49 local (17:49 UTC) - Place: Newberg, OR - Coordinates: 45.323612, -123.054168 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=45.3236&lon=-123.0542&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: 2 uninjured - Status: Completed, report September 26, 2019 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 98632 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA19CA056 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/98632/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=98632 - Page: https://openairdocs.org/ntsb/GAA19CA056 ## Probable cause The pilot under instruction's failure to maintain directional control and the flight instructor's delayed remedial action. ## 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 · Student/instructed pilot (probable cause); cases with it: [Helicopteres Guimbal CABRI G2, 11 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=9000001), [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: [Helicopteres Guimbal CABRI G2, 3 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md?model=9000001), [All aircraft, 3,958 cases](https://openairdocs.org/ntsb-findings/01062020/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Instructor/check pilot (probable cause); cases with it: [Helicopteres Guimbal CABRI G2, 5 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=9000001), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/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: [Helicopteres Guimbal CABRI G2, 3 cases](https://openairdocs.org/ntsb-events/230/sequence.md?model=9000001), [All aircraft, 4,585 cases](https://openairdocs.org/ntsb-events/230/sequence.md) - [Landing: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Helicopteres Guimbal CABRI G2, 3 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=9000001), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing-landing roll: Roll over](https://openairdocs.org/ntsb-events/097); cases with it: [Helicopteres Guimbal CABRI G2, 3 cases](https://openairdocs.org/ntsb-events/097/sequence.md?model=9000001), [All aircraft, 261 cases](https://openairdocs.org/ntsb-events/097/sequence.md) ## Analysis The flight instructor in the skid-equipped helicopter reported that the purpose of the flight was to conduct an aircraft transition flight. The pilot under instruction performed a touchdown autorotation on the asphalt runway. The helicopter touched down in a level attitude just right of the centerline and then slid on its skids off the right side of the runway into grass. The helicopter spun right and rolled onto its left side. The helicopter sustained substantial damage to the main and tail rotor drive systems. Both pilots reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation. ## Factual narrative The flight instructor in the skid-equipped helicopter reported that the purpose of the flight was to conduct an aircraft transition flight. The pilot under instruction performed a touchdown autorotation on the asphalt runway. The helicopter touched down in a level attitude and just to the right of the centerline sliding to the right on its skids. Subsequently, the helicopter slid off the right side of the runway into the grass. The helicopter spun to the right and rolled onto its left side. The helicopter sustained substantial damage to the main and tail rotor drive system. Both pilot's reported that there were no mechanical malfunctions or failures with the helicopter that would have precluded normal operation. ## Aircraft - Registration: [N370PA](https://openairdocs.org/aircraft/N370PA), registered now, S/N 1062, built 2014 (OpenAirDocs) - Reported make and model: Guimbal CABRI (G2) - Registry model: [Helicopteres Guimbal CABRI G2](https://openairdocs.org/model/helicopteres-guimbal-cabri-g2) (registry code 9000001) (OpenAirDocs) - Registry engine: [Lycoming O-360-J2A](https://openairdocs.org/engine/lycoming-o-360-j2a) (registry code 42314, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 1062 - Year built: 2014 - Airframe hours: 1601.3 - Engines: LYCOMING O-360-J2A 180 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Precision Aviation Training, LLC - Registered owner: Aircraft Guaranty Corp Trustee - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, August 27, 2018 - Departed: 17S, Newberg, OR - Destination: 17S, Newberg, OR - Airport: 17S, Chehalem Airpark, runway 07, 2,285 × 40 ft, asphalt - Equipment: Electronic primary flight display ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 35; injuries: none; flight instructor, commercial; instrument ratings: helicopter; medical: class 2, without waivers/limitations; last flight review May 17, 2018; seat: left; restraint: 4-point; flight hours: 1,552 total, 797 in this make and model, 1,377 as pilot in command, 107 in the last 90 days, 22 in the last 30 days, 1 in the last 24 hours - Pilot; age 51; injuries: none; airline transport, flight instructor; instrument ratings: helicopter; medical: class 1, without waivers/limitations; last flight review August 8, 2018; seat: right; restraint: 4-point; flight hours: 2,950 total, 7 in this make and model, 2,860 as pilot in command, 4 in the last 90 days, 3 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Temperature: 39 °F, dew point 34 °F - Altimeter: 30.45 inHg - Observed at: KMMV, 8 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 20181113022499A](https://openairdocs.org/incident/20181113022499A), Nov 13, 2018: Helicopteres Guimbal CABRI G2, Newberg, OR, Substantial damage. During a full down practice autorotation, the helicopter touched down with approximately 30 knots of ground speed. After ground contact, the helicopter started… ## Docket (2 files) The files NTSB released with the investigation on June 26, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=98632. 3.7 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.5 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40473740&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Photo (item 2, .PDF, 1 photo, 209 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40473741&FileExtension=.PDF&FileName=Photo-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.