; and (B) extended battery life for underwater locating devices; (2) automatic deployable flight recorders; (3) emergency locator transmitters; (4) triggered transmission of flight data and other satellite-based solutions; (5) distress-mode tracking; and (6) protections against disabling flight recorder systems. (c) Report Not later than 1 year after the date of initiation of the assessment, the Administrator shall submit to the appropriate committees of Congress a report on the results of the assessment. (d) Part 121 air carrier defined In this section, the term part 121 air carrier means an air carrier with authority to conduct operations under part 121 of title 14, Code of Federal Regulations. 306. Advanced cockpit displays (a) In general Not later than 180 days after the date of enactment of this Act, the Administrator shall initiate a review of heads-up display systems, heads-down display systems employing synthetic vision systems, and enhanced vision systems (in this section referred to as HUD systems , SVS , and EVS , respectively). (b) Contents The review shall— (1) evaluate the impacts of single- and dual-installed HUD systems, SVS, and EVS on the safety and efficiency of aircraft operations within the national airspace system