Aluminum, copper, beta cloth, high temperature RTV
A Lunar Module Lower Main Panel Assembly which would provided the crew with radar control and indication, descent engine override, interior/exterior lighting, touch down indication (via the blue CONTACT LIGHT) and a number of other operator interfaces with the spacecraft. Based on a review of Grumman Drawings and chassis serial numbers, this panel has been confirmed to be an operational spare (OS) constructed for LM-3 Spider (Apollo 9) .