SkyWest ERJ 175 Limitations Practice Test

Engine start cycle limits are the official restrictions that govern how many engine starts can be attempted within a given period and how long you must wait between starts to protect the engine from thermal and mechanical stress. These limits are documented in the Powerplant/Engine Start limits section of the Airplane Flight Manual (AFM), which lists the maximum starts allowed in specified time frames and the required cooldown or interstart intervals. The AFM is the primary source for all airplane operating limits, so crews rely on it for planning starts and determining dispatchability. Other manuals like the MEL address equipment faults and dispatch restrictions, the Cabin Pressurization manual covers pressurization systems, and the Flight Crew Operating Manual provides procedures and guidance but does not establish the engine start cycle limits.