FAA 2023-23-01

Supersedes but retains requirements of AD 2022–01–05, which required repetitive visual inspections of the rivets on the rear transmission shaft bearing support, inspections of the local structure, and rivet heads on the left- and right-hand sides of the rear transmission shaft bearing support for cracking, missing, loose, or sheared rivets, in addition to reporting the results of those inspections and performing any necessary corrective actions. Updated AD also requires a one-time visual inspection for paint in the gutter area and removal of paint, if necessary. Prompted by the determination that certain modified helicopters may have finishing paint applied to the gutter, which could prevent detection of cracks during inspections.