Figure 3.9. Compressor Rotor Blade Damage Before and After Repair.
a. Flyable storage. An engine that will not be operated for
a period of at least 72 hours, nor more than 14 days, must be
preserved and maintained with all components and systems in an
operable condition. On the third day, the engine must be runup or
motored with the starter. If the engine is only motored on the third
day, it must be run up on the seventh.