General Information

Use of the Component Restoration (Overhaul) Guide

It is intended that the Component Restoration (Overhaul) section provide a breakdown of the repair and overhaul of the BELL 505 components. It is designed to aid persons enrolled in a formal course of instruction, as well as the individual who is studying on his or her own.

This guide is not intended to replace, substitute for, or supersede official regulations or the manufacturer’s instructions.

The 505 Component Maintenance Manual (CMM) provides all the procedures and data necessary to restore the BELL 505 components. The instructions provided in the 505-CMM and those modified either by Alert Service Bulletins (ASB) issued by BELL, or by Airworthiness Directives (AD) issued by the local Aviation Authority, shall be strictly followed.

Component Restoration (Overhaul) Schedule

The manufacture recommends to restore (overhaul) the following components at specified intervals:

Main rotor hub assembly

2400 flight hours

Swashplate and support assembly

4800 flight hours

Mast assembly

3000 flight hours

Transmission assembly

4500 flight hours

Freewheel assembly

3000 flight hours

Tail rotor hub assembly

2500 flight hours

Tail rotor gearbox

6000 flight hours