Airplane Encountered An Obstructed Dip In The Airstrip Surface. As The Airplane Rolled Through The Dip, The Pilot Was Unable To Arrest The Resulting Nose-Down Pitch Analysis: The pilot landed a tailwheel-equipped airplane on a remote airstrip. During the landing rollout, while reducing engine power and holding the control stick fully aft, the airplane encountered an obstructed dip in the airstrip surface. As the airplane rolled through the dip, the pilot was unable to arrest the resulting nose-down pitch. The airplane subsequently nosed over and came to rest inverted…