What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During practice formation flying, the engine experienced a catostrophic internal failure and stopped. The propeller shaft sheared and propeller departed to the left of the aircraft. As the propeller travelled, it struck the left-wing leading edge twice causing damage to 8 ribs, stringer. The pilot identified a safe landing area (hwy) and landed the aircraft with no additional damage or injuries. FAA (frontline manager) was notified 6 June 2026 at 1040 hrs and arrived on scene at 1125 hrs. Inspector was assigned to work investigation 8 June 2026 at 0710 hrs. NTSB was notified by frontline manager on 6 June 2026. NTSB assigned an investigator on 8 June 2026.engine estimated time after overhaul and installation on aircraft was 11,397.32 hrs. Engine hours since installation are 121.2 hrs. Estimated total engine time is 11518.52 hrs.
As the FAA filed it
DURING PRACTICE FORMATION FLYING, THE ENGINE EXPERIENCED A CATOSTROPHIC INTERNAL FAILURE AND STOPPED. THE PROPELLER SHAFT SHEARED AND PROPELLER DEPARTED TO THE LEFT OF THE AIRCRAFT. AS THE PROPELLER TRAVELLED, IT STRUCK THE LEFT-WING LEADING EDGE TWICE CAUSING DAMAGE TO 8 RIBS, STRINGER. THE PILOT IDENTIFIED A SAFE LANDING AREA (HWY) AND LANDED THE AIRCRAFT WITH NO ADDITIONAL DAMAGE OR INJURIES. FAA (FRONTLINE MANAGER) WAS NOTIFIED 6 JUNE 2026 AT 1040 HRS AND ARRIVED ON SCENE AT 1125 HRS. INSPECTOR WAS ASSIGNED TO WORK INVESTIGATION 8 JUNE 2026 AT 0710 HRS. NTSB WAS NOTIFIED BY FRONTLINE MANAGER ON 6 JUNE 2026. NTSB ASSIGNED AN INVESTIGATOR ON 8 JUNE 2026.ENGINE ESTIMATED TIME AFTER OVERHAUL AND INSTALLATION ON AIRCRAFT WAS 11,397.32 HRS. ENGINE HOURS SINCE INSTALLATION ARE 121.2 HRS. ESTIMATED TOTAL ENGINE TIME IS 11518.52 HRS.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.