I haven't lost a soul since I got into the airplane fixing business in 1966 so you needn't worry if you get screwed into flying one I worked on.
Less than 10% of aircraft accidents can be attributed to maintenance malpractice and more than 80% can be attributed to Pilot error.
That 10% has been on the rise for the past 10 or 15 years. It used to be at 1% in the 60's thru the 80's but then came contract maintenance both here and abroad and it isn't going to get any better in the future.