1981 - NHTSA objects to FAA TSO, wants FAA to accept seats that meet only NHTSA standards
1981 - NHTSA objects to FAA TSO, wants FAA to accept seats that meet only NHTSA standards
1982 - FAA considers NHTSA objections and reduces dynamic test from 44 to 29 fps, issues TSO and permits use of approved CRS during landing and takeoff.
1983 - Child restraint designs representing 1.3 million in-service units certified under TSO
1983 - NHTSA (with NTSB support) renews objection to TSO. Secretary of DOT directs the Transportation Systems Center to recommend a resolution of the dispute.
1983 - TSC recommends NHTSA modify their standard to include the TSO requirements, and that FAA accept the revised standard. They estimate that between 0.006 and 0.68 lives will be saved per year.
1984 - NHTSA issues revised rule for child restraints in automobiles and aircraft, retaining only the inversion test of the TSO.
1985 - FAA issues guidance accepting seats complying with the NHTSA rule for use on board aircraft.