NONE · BOEING 737-890 · 2023-08-21 · Santa Ana, CA, USA
Event
NTSB number
DCA23FA417
Event ID
20230821192903
Type
Accident
Date
2023-08-21
Location
Santa Ana, CA, USA
Coordinates
33.675701, -117.86799
Injuries
Highest injury
NONE
Fatal
0
Serious
0
Minor
0
Uninjured
112
Total aboard
112
Aircraft
Make
BOEING
Model
737-890
Registration
N516AS
FAR Part
121
Engines
2
Damage
SUBS
Conditions
Light
NITE
Weather
IMC
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.