…this section must submit to the FAA a transition plan (containing a calendar of events) for moving from conducting its scheduled operations under the commuter requirements of part 135 of this chapter to the requirements for domestic or flag operations under part 121 of this chapt…

…rson who is an alcoholic or drug abuser whose current use of alcohol or drugs prevents that individual from performing the duties of the job in question, or whose employment, because of current alcohol or drug abuse, would constitute a direct threat to property or to the safety o…