No fatalities
DIAMOND AIRCRAFT IND INC DA 40 accident at Rocky Ridge, UT, 12 Sept 2025
On September 12, 2025, a DIAMOND AIRCRAFT IND INC DA 40 operated by ALEPH LEASING LLC was involved in an aviation accident near Rocky Ridge, UT. No fatalities were reported. Investigators recorded the probable cause as: The flight instructor’s inadequate supervision and delayed remedial action during an unusual attitude recovery, which resulted in a descent into terrain. This summary draws on records from NTSB; 12 related events involving the same aircraft type or operator are linked below.
Probable cause
The flight instructor’s inadequate supervision and delayed remedial action during an unusual attitude recovery, which resulted in a descent into terrain.
— NTSB Determination
Contributing factors
Altitude — Not attained/maintainedStudent/instructed pilotInstructor/check pilot