In the event of a damaged McCauley propeller Model No. 2A34C50/90A, where should one look for an approved alternate replacement?

The best source for finding an approved alternate replacement for a damaged McCauley propeller Model No. 2A34C50/90A is the Type Certificate Data Sheets (TCDS). The TCDS provides critical information regarding the specifications, limitations, and approved equipment associated with aircraft components. This document includes details on alternative parts and configurations that have been evaluated and approved by the aviation authorities, ensuring compliance with safety and airworthiness standards.

Using TCDS is especially important when seeking parts like propellers that must meet strict regulatory requirements. This document not only outlines the propeller model but also indicates which alternatives have been authorized for use on specific aircraft types, thereby facilitating the search for appropriate replacements that maintain the integrity and performance of the aircraft.

While a manufacturer's catalog might provide a variety of products, it doesn’t specifically ensure regulatory compliance like the TCDS does. Aircraft specifications may offer general information about the aircraft itself but would lack the focused detail on approved replacements. Maintenance Procedures Manuals provide operational guidance for repair and management but are not primarily concerned with part replacements, especially regarding alternate options. Thus, the TCDS is the most credible and appropriate source for identifying an approved alternate replacement propeller.