Apollo accident, hearings, 90th Congress, 1st session, to hear testimony from officials of National Aeronautics and Space Administration regarding corrective measures of Apollo 204 Review Board findings and to review plans for changes in program costs and schedules. pt. 7. Appendixes 1, 2, and 3 containing information relating to actions taken on findings and determinations of review board panels, and manned space flight reports, on block 2 spacecraft changes and actions taken as result of accident.