I for one feel a little hesitation about flying in a 737 due to the as yet unexplained rash of rudder hard overs
Apparently they concluded it was caused by "cold soaked" PCU's reversing the command input given by the pilots. There is an AD.
Boeing 737 Rudder Design Defect, Airline Safety, 737 crashes, rudder PCU, 737 Colorado Springs crash, US Air 737 crash
If I'm not flying it, I'm scared of it!