Flown Lunar Module Contingency Checklist page carried to the lunar surface aboard the Lunar Module Challenger during the Apollo 17 mission, 5.5 x 8, signed and flight-certified in blue felt tip, "Lunar Flown Aboard Challenger, Gene Cernan." The double-sided Flight Data File page, dated August 31, 1972, pages 5-33 and 5-34, features four control panels for an “Emergency Power Down” sequence, and two steps related to “Spacecraft Functions Remaining” and “CWEA [Caution and Warning Electronics Assembly] Status.” In fine condition.