PA-28 down, Florida Treasure Coast

[Racerx]

"fatigue cracks initiated in areas of fretting damage."

Fretting damage from the removal of close tolerance bolts in the spar to do the ECI AD....which it passed.

FAA....that's EXACTLY what everyone is worried about. If only this final report came out BEFORE the comment period ended.

Fatigue cracks aren't cause for concern when they precipitate from FAA mandated inspections. Got it!

Edit: comment period actually ends tomorrow. I'll be making an additional comment

 

[Kyle N]

There are two things in this NTSB report that show either sloppy work or require further explanation:

The engine is described on page 8 as a Lycoming 0-320 rated at 180 hp instead of the usual 160 hp.

The numbers for AD2020-26-16 on page 10 make no sense.
The Eddy Current inspection was performed in March 2021. TIS is reported by the testing company with 15,572.9 hours and the factored service hours are calculated @ 15,405.02 hours.

The maintenance records as of June 29, 2023 - more than two years later - indicate TIS with 16,756 hours and calculated factored service hours of just 1,199.1 hours.

I assume it's 1,199.1 FSH since the Eddy Current inspection was performed, but agree that section is difficult to follow.