What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Pilot statement:
Full flight was VFR no weather issues.
Departed Colorado spring from kfly at about 7:40AM (mountain time) to kpub to pick up passenger at about 8:30AM (mountain time). Departed kpub about 9AM (mountain time) and next destination was krph for fuel and bathroom break. Arrived at krph at about 2PM (central time) and departed about 2:30PM (central time) to final destination. Arrived at final destination about 4PM (central time) and proceeded to do several passes on a private grass field (off airport) to assess landing safely. After my third pass I had decided on what seem to be very stable and relatively flat surface. I committed to the landing and and setup for a slow and stable stol approach, at touchdown air speed was about 30-35MPH and touched down, just seconds after touchdown we hit something hard that launched as back into the air about 5-10 feet and abruptly hit nose first and rolled forward ending upside down. We safely exited the plane and got clear. After settling down for a few minutes and making sure passenger and myself were safe. I realized that we had hit a berm that was covered in grass and could not see the contour from the air. I never saw the berm even at touchdown or roll-out. The berm collapsed the front landing gear and caused us to nose into the ground and flip.
As the FAA filed it
PILOT STATEMENT:
FULL FLIGHT WAS VFR NO WEATHER ISSUES.
DEPARTED COLORADO SPRING FROM KFLY AT ABOUT 7:40AM (MOUNTAIN TIME) TO KPUB TO PICK UP PASSENGER AT ABOUT 8:30AM (MOUNTAIN TIME). DEPARTED KPUB ABOUT 9AM (MOUNTAIN TIME) AND NEXT DESTINATION WAS KRPH FOR FUEL AND BATHROOM BREAK. ARRIVED AT KRPH AT ABOUT 2PM (CENTRAL TIME) AND DEPARTED ABOUT 2:30PM (CENTRAL TIME) TO FINAL DESTINATION. ARRIVED AT FINAL DESTINATION ABOUT 4PM (CENTRAL TIME) AND PROCEEDED TO DO SEVERAL PASSES ON A PRIVATE GRASS FIELD (OFF AIRPORT) TO ASSESS LANDING SAFELY. AFTER MY THIRD PASS I HAD DECIDED ON WHAT SEEM TO BE VERY STABLE AND RELATIVELY FLAT SURFACE. I COMMITTED TO THE LANDING AND AND SETUP FOR A SLOW AND STABLE STOL APPROACH, AT TOUCHDOWN AIR SPEED WAS ABOUT 30-35MPH AND TOUCHED DOWN, JUST SECONDS AFTER TOUCHDOWN WE HIT SOMETHING HARD THAT LAUNCHED AS BACK INTO THE AIR ABOUT 5-10 FEET AND ABRUPTLY HIT NOSE FIRST AND ROLLED FORWARD ENDING UPSIDE DOWN. WE SAFELY EXITED THE PLANE AND GOT CLEAR. AFTER SETTLING DOWN FOR A FEW MINUTES AND MAKING SURE PASSENGER AND MYSELF WERE SAFE. I REALIZED THAT WE HAD HIT A BERM THAT WAS COVERED IN GRASS AND COULD NOT SEE THE CONTOUR FROM THE AIR. I NEVER SAW THE BERM EVEN AT TOUCHDOWN OR ROLL-OUT. THE BERM COLLAPSED THE FRONT LANDING GEAR AND CAUSED US TO NOSE INTO THE GROUND AND FLIP.