Aug 21, 2023
Accident
Substantial Santa Ana, CA
InjuriesNone
Phase of Flight-
ConditionsIMC
OperationFAR 121
Probable Cause
Maintenance personnel’s excessive grinding of the left main landing gear’s aft trunnion pin during machining, which imparted heat damage to the base metal and led to the fatigue cracking that caused the pin to fracture during landing.
NTSB DCA23FA417