AD/BELL 205/19 Amdt 1 - Transmission Support Case - Inspection - CANCELLED

This document cancels a previous aviation safety rule that required owners of Bell 205 series helicopters to perform regular visual inspections of the transmission support case (the structural component that holds the main rotor transmission in place).

What it does:

• Removes a maintenance requirement: Operators no longer need to conduct a specific visual inspection of the transmission support case every 100 hours of flight time.
• Ends a long-standing rule: The inspection requirement had been in place since 1974 and was unique to Australian operations (not based on manufacturer guidelines).

Who it affects:

• Owners, operators, and maintenance engineers responsible for Bell Helicopter Textron 205 series aircraft.

Why it matters:

• This reduces maintenance costs and downtime for these helicopter operators, as the specific 100-hour inspection is no longer mandatory for keeping the aircraft airworthy.