# NTSB GAA17CA507: Cub Crafters CC11 100, N599CC, Hillsboro, OR, August 24, 2017 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: August 24, 2017, 07:45 local (14:45 UTC) - Place: Hillsboro, OR - Coordinates: 45.427223, -122.943885 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=45.4272&lon=-122.9439&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Defining event: [Landing: Loss of control in flight](https://openairdocs.org/ntsb-events/240) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report April 23, 2018 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 95882 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA17CA507 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95882/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=95882 - Page: https://openairdocs.org/ntsb/GAA17CA507 ## Probable cause The student pilot’s failure to maintain airplane control while landing in crosswind conditions 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: [Cub Crafters CC11-100, 6 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md?model=060002H), [All aircraft, 9,295 cases](https://openairdocs.org/ntsb-findings/02063040/cases.md) - [Action: delayed action](https://openairdocs.org/ntsb-findings/02041025): Personnel issues › Action/decision · Instructor/check pilot (probable cause); cases with it: [Cub Crafters CC11-100, 1 case](https://openairdocs.org/ntsb-findings/02041025/cases.md?model=060002H), [All aircraft, 894 cases](https://openairdocs.org/ntsb-findings/02041025/cases.md) - [Performance/control parameters](https://openairdocs.org/ntsb-findings/01062000): Aircraft › Aircraft oper/perf/capability · Not attained/maintained (probable cause); cases with it: [Cub Crafters CC11-100, 1 case](https://openairdocs.org/ntsb-findings/01062000/cases.md?model=060002H), [All aircraft, 1,269 cases](https://openairdocs.org/ntsb-findings/01062000/cases.md) - [Wind: crosswind](https://openairdocs.org/ntsb-findings/03034040): Environmental issues › Conditions/weather/phenomena · Effect on operation; cases with it: [Cub Crafters CC11-100, 1 case](https://openairdocs.org/ntsb-findings/03034040/cases.md?model=060002H), [All aircraft, 1,008 cases](https://openairdocs.org/ntsb-findings/03034040/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 in flight](https://openairdocs.org/ntsb-events/240) (defining event); cases with it: [Cub Crafters CC11-100, 3 cases](https://openairdocs.org/ntsb-events/240/sequence.md?model=060002H), [All aircraft, 5,002 cases](https://openairdocs.org/ntsb-events/240/sequence.md) - [Landing: Runway excursion](https://openairdocs.org/ntsb-events/300); cases with it: [Cub Crafters CC11-100, 2 cases](https://openairdocs.org/ntsb-events/300/sequence.md?model=060002H), [All aircraft, 3,643 cases](https://openairdocs.org/ntsb-events/300/sequence.md) - [Landing: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470); cases with it: [Cub Crafters CC11-100, 6 cases](https://openairdocs.org/ntsb-events/470/sequence.md?model=060002H), [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md) - [Landing: Nose over/nose down](https://openairdocs.org/ntsb-events/096); cases with it: [Cub Crafters CC11-100, 2 cases](https://openairdocs.org/ntsb-events/096/sequence.md?model=060002H), [All aircraft, 2,287 cases](https://openairdocs.org/ntsb-events/096/sequence.md) ## Analysis The student pilot of the tailwheel-equipped airplane was practicing crosswind takeoffs and landings with the flight instructor. During the second landing, a few feet above the runway on short final, the airplane's nose turned sharply to the left. The student reported that his flight instructor yelled a command, took over the controls, and added full power. The flight instructor reported that, after he took the flight controls, he attempted to go around but was unsuccessful. The airplane continued to the left through low brush and down an embankment. The tailwheel struck the edge of the embankment, and the airplane then nosed over. Both wings and wing struts sustained substantial damage. The student pilot and flight instructor reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. An automated weather observation station located about 7 miles north of the accident airport reported that, about 8 minutes after the accident, the wind was from 310° at 11 knots. The airplane landed on runway 2. ## Factual narrative The student pilot of the tailwheel-equipped airplane was practicing crosswind takeoffs and landings with the flight instructor. During the second landing, a few feet above the runway on short final, the nose of the airplane turned sharply to the left. The student reported that his flight instructor yelled a command, took over the controls, and added full power. The flight instructor reported that after he took the flight controls, he attempted to go-around, but was unsuccessful. The airplane continued to the left, through low brush, and down an embankment. The tailwheel struck the edge of the embankment, then nosed over. Both wings and wing struts sustained substantial damage. The student pilot and flight instructor reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. A review of recorded data from the automated weather observation station, located about 7 miles north of the accident airport, reported that about 8 minutes after the accident the wind was from 310° at 11 knots. The airplane landed on runway 2. ## Aircraft - Registration: [N599CC](https://openairdocs.org/aircraft/N599CC), registered now, S/N CC11-00091, built 2009 (OpenAirDocs) - Reported make and model: CUB CRAFTERS INC CC11 100 (NO SERIES) - Registry model: [Cub Crafters CC11-100](https://openairdocs.org/model/cub-crafters-cc11-100) (registry code 060002H) (OpenAirDocs) - Registry engine: [Continental O-200A](https://openairdocs.org/engine/continental-o-200a) (registry code 17404, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: CC11-00091 - Year built: 2009 - Airframe hours: 3143 - Engines: Continental O-200A 100 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Operator: Twin Oaks Airpark Inc - Registered owner: Twin Oaks Airpark Inc - Airworthiness certificate: Special, Special light-sport (Special) - Last inspection: Condition, August 15, 2017 - Departed: 7S3, Hillsboro, OR - Destination: 7S3, Hillsboro, OR - Airport: 7S3, Stark'S Twin Oaks Airpark, runway 02, 2,465 × 48 ft, asphalt - Equipment: Unknown ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 69; injuries: none; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review January 30, 2017; seat: rear; restraint: 4-point; flight hours: 4,000 total, 26 in this make and model, 3,940 as pilot in command, 264 in the last 90 days, 58 in the last 30 days, 1.3 in the last 24 hours - Student pilot; age 46; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review November 4, 2016; seat: front; restraint: 4-point; flight hours: 81 total, 4 in this make and model, 38 as pilot in command, 10 in the last 90 days, 7 in the last 30 days, 0.3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 310° at 11 knots - Visibility: 10 statute miles - Lowest ceiling: 5,000 ft overcast - Temperature: 61 °F, dew point 48 °F - Altimeter: 30.07 inHg - Observed at: KHIO, 7 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 20170824024289A](https://openairdocs.org/incident/20170824024289A), Aug 24, 2017: Cub Crafters Inc CC11-100, Hillsboro, OR, Substantial damage. 08/24/2017: Aircraft was involved in a training flight. Upon landing, student pilot lost control of the aircraft and the aircraft ground looped and became… ## Docket (2 files) The files NTSB released with the investigation on March 13, 2018, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=95882. 3.9 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (item 1, .PDF, 3.7 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460812&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1-Master.PDF - Student Pilot Statement (item 2, .PDF, 246 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40460813&FileExtension=.PDF&FileName=Student%20Pilot%20Statement-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.