Printed Apollo 17 ‘APS Malfunctions Index,’ 8 x 10.5, numbered page 6-2. The page, flown to the lunar surface, is a flow chart instructing the crew of the procedure they should follow if the ascent engine in the lunar module failed to start when the time came to leave the moon. Signed at the bottom in black felt tip “Carried to the surface of the Moon on board lunar module ‘Challenger.’ Gene Cernan Apollo XVII.” In fine condition with three punch holes to the right side. Pre-certified Steve Zarelli and RR Auction COA.