APU Issues Probably Won't Affect Mission Length

Discovery’s mission winds down; APU 1 defined as “lost”, Orlando Sentinel

“For now, the mission is expected to proceed as planned. In fact, it’s possible APU 1 might still be available for landing. Engineers could decide to start APU 1 in orbit and burn off the rest of its fuel to minimize the risk of hydrazine leaking into Discovery’s aft compartment. Or they could choose to run the unit normally during reentry. The issue is expected to be discussed at length during today’s mission management team meeting.”