Current testing requirements for high temperature alloys are defined in general industry specifications (ASTM, AMS), as well as in user specifications. Many of these requirements were established in the 1960's when production practices were yet to be refined.
cowling - protective covering consisting of a metal part that covers the engine; there are powerful engines under the hoods of new cars; the mechanic removed the cowling in order to repair the plane's engine.
Open the left engine cowl door and secure with the cowl prop rod. 2. Locate throttle cable (1) and sleeve (2). 3. Grasp sleeve (2) as depicted in Figure 1 and attempt to pull the sleeve downward from. swivel collar (3) using hand force. a. If sleeve (2) remains secure in the swivel, the cable is satisfactory for flight. Close and latch the left cowl door. b. If sleeve (2) pulls away from the swivel, a serviceable throttle cable must be. installed prior to further flight.