2018-01-182018-01-181979http://hdl.handle.net/2152.3/4639This document is a memorandum written by Allen Bean, Chief of the Astronaut Candidate Operations and Training Group, and includes recommendations to the Director of Flight Operations at NASA for equipment upkeep and adjustment.Maintenance RequirementsSpace MedicineNASAAstronaut GymDirector of Flight OperationsAllen BeanMemorandum