Amateur-built DHC6 accident near Boulder City, Nevada, March 6, 2020

The NTSB's narrative final · quoted from the NTSB record

An operator's pilot was conducting training for a newly hired pilot for a first officer position in the twin-engine airplane. After accomplishing air work, the pilots returned to the airport to practice landings and takeoffs. According to both pilots, the first approach was normal, and the airplane touched down slightly right of the runway centerline. The trainee pilot stated that, after touchdown, the airplane began drifting further right and that he was unable to correct the deviation. The trainer pilot reported that, when directional control became unstable, he told the trainee, "I have the controls." The trainer pilot saw that the trainee pilot released his hands from the engine power levers and the yoke, but the airplane continued to deviate to the right, contrary to his control inputs and his addition of asymmetric power to the engines. The trainer pilot realized that, based on his inputs, the airplane should have returned to the centerline but that it did not and that it was behaving as if the trainee pilot was applying some braking. At that point, the trainer pilot again told the trainee pilot to release the controls, and he used the brakes, which he reported applied and released normally. Subsequently, the airplane exited the right side of the runway and impacted a ditch. The airplane sustained substantial damage to the right wing. The trainer pilot and the operator reported that there were no mechanical failures or malfunctions with the airplane that would have precluded normal operation. The trainer pilot reported that he believed the trainee pilot's feet were either on the brakes or interfered with his brake and/or rudder application attempts. The trainee pilot reported that he could not recall the position of his feet after he relinquished airplane control to the trainer pilot.

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.

Photographs from the investigation 14 pictures from the NTSB's docket, as the NTSB released them

WPR20CA112 – FAA-Provided Photographs Figure 1 - Right Wingtip and AileronWPR20CA112 – FAA-Provided Photographs Figure 2 - Interior of Right WingWPR20CA112 – FAA-Provided Photographs Figure 3 - Right Wing Aileron Wrinkles and CracksWPR20CA112 – FAA-Provided Photographs Figure 4 - Internal Rib WrinklesWPR20CA112 – KBVU-provided Photographs Figure 1 - Tire Track Marks Exiting RunwayWPR20CA112 – KBVU-provided Photographs Figure 2 - Tire Track Marks and DitchWPR20CA112 – KBVU-provided Photographs Figure 3 - Tire Track Marks and DitchWPR20CA112 – KBVU-provided Photographs Figure 4 - Tire Track MarksWPR20CA112 – KBVU-provided Photographs Figure 5 -- Tire Track MarksWPR20CA112 – KBVU-provided Photographs Figure 6 - Tire Track MarksWPR20CA112 – KBVU-provided Photographs Figure 7 - Approximate Airplane PathWPR20CA112 – Training Pilot-provided Photographs Figure 1 - Tracks and End of DitchWPR20CA112 – Training Pilot-provided Photographs Figure 2 - End of Ditch and Right Wing Strike ScarWPR20CA112 – Training Pilot-provided Photographs Figure 3 - End of Ditch and Right Wing Strike Scar

The NTSB's photographs with the NTSB's captions, at screen size. Open a picture to see it full size or to report one that should not be shown.

Other NTSB records under N72GC the same tail number, which may have belonged to a different aircraft at the time