And sometimes with disastrous results: https://app.ntsb.gov/pdfgenerator/Re...Final&IType=MA
But Part 135/121 maintenance procedures are SUPPOSED to alleviate some of this.
And sometimes with disastrous results: https://app.ntsb.gov/pdfgenerator/Re...Final&IType=MA
But Part 135/121 maintenance procedures are SUPPOSED to alleviate some of this.