Lee Majors and Farah Fawcett were married when she appeared this episode. This was her first of four appearances in the series. In each subsequent appearance, she plays a different character and then reprises her character in this episode one more time.
This episode is based on the actual crippled-spacecraft event from Apollo 13. During Steve and Kelly's second spacewalk, the footage includes an actual b&w photo of Apollo 13's damaged service-module, showing the missing blasted-out side-panels and the exposed internal components.