Cub Crafters INC CC11 100 accident near Hillsboro, Oregon, August 24, 2017
On August 24, 2017 at about 2:45 pm local time, a 2009 Cub Crafters INC CC11 100, registered N599CC, was substantially damaged in an accident during landing near Hillsboro, Oregon (Stark'S Twin Oaks Airpark airport). It was an instructional flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The student pilot’s failure to maintain airplane control while landing in crosswind conditions and the flight instructor’s delayed remedial action.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 24, 2017 · about 2:45 pm local time
- Place
- Hillsboro, Oregon · Stark'S Twin Oaks Airpark · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cub Crafters INC CC11 100 NO SERIES, built 2009 · all CC11 100s on the register
- Registration
- N599CC · registry record · serial CC11-00091
- Damage
- Substantial damage
- Flight
- Instructional flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
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.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Loss of control in flight during landing defining event
- Runway excursion during landing
- Collision with terrain or object (not controlled flight into terrain) during landing
- Nose over/nose down during landing
The NTSB's findings
- cause Personnel issues › Task performance › Use of equip/info › Aircraft control › Student/instructed pilot
- cause Personnel issues › Action/decision › Action › Delayed action › Instructor/check pilot
- cause Aircraft › Aircraft oper/perf/capability › Performance/control parameters › (general) › Not attained/maintained
- Environmental issues › Conditions/weather/phenomena › Wind › Crosswind › Effect on operation
Flight instructor
- Certificate: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; single-engine sea; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: glider; instructor: instrument airplane; instrument: airplane; rotorcraft: glider
- Flight time: 4,000 hours in all; 26 in this make and model; 264 in the last 90 days; 58 in the last 30 days; 3,940 as pilot in command; 1,285 on instruments
- Last flight review: January 30, 2017
- Medical certificate: Class 2 (with waivers/limitations)
- Seat: rear
- Injury: no injuries
Dual student
- Certificate: private
- Ratings: single-engine land
- Flight time: 81 hours in all; 4 in this make and model; 10 in the last 90 days; 7 in the last 30 days; 38 as pilot in command
- Last flight review: November 4, 2016
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: frt
- Injury: no injuries
The aircraft
- Airframe total time: 3,143 hours
- Last inspection: condition inspection, August 15, 2017
- Maximum gross weight: 1,320 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental O-200A (piston); 7,845 hours total
- Operator: Twin Oaks Airpark INC
The flight
- Departed from: 7S3 Hillsboro OR at 2:30 pm
- Destination: 7S3 Hillsboro OR
- Flight plan: none
- Runway 02, 2,465 ft by 48 ft
- A second pilot was aboard
Weather at the time
- Light: daylight
- Wind: from 310° at 11 knots
- Visibility: 10 statute miles
- Sky: overcast at 5,000 ft
- Temperature: 61°F (16°C), dew point 48°F (9°C)
- Altimeter: 30.07 inHg
- Observation at 2:53 pm from KHIO, 7 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 2 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
2 documents, released by the NTSB on March 13, 2018. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 | PDF, 9 pages | View Download |
| 2 | Student Pilot Statement | PDF, 1 page | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.