// LET'S STUDY AVIATION

Let's Study Aviation

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

1 8055. (1) When performing a ring (coin tap) test on com posite structures, a change in sound may be due to dam age or to transition to a different internal structure. (2) The extent of separation damage in composite struc tures is most accurately measured by a ring (coin tap) test. Regarding the above statements,