// LET'S STUDY AVIATION

Let's Study Aviation

Airframe Test A1 and Power Plant Test A4 — pick a subject and test yourself.

1 8509. (1) Manufacturer’s data and FAA publications such as Airworthiness Directives, Type Certificate Data Sheets, and advisory circulars are all approved data. (2) FAA publications such as Technical Standard Orders, Airworthiness Directives, Type Certificate Data Sheets, and Aircraft Specifications and Supplemental Type Cer tificates are all approved data. Regarding the above statements,