Separating Service members can be granted up to 180 days of permissive duty to focus solely on training full-time with approved industry partners after unit commander (first O-4/Field Grade commander in chain of command) provides written authorization and approval. Previous commercial high-bypass turbofan engine testing experience including prepping, de-prepping, engine test (test cell or on-wing), line maintenance, engine changes, LRU removal and installation, and troubleshooting.