Is endued.

Free Flight 1 —Haise and Fullerton September 13, 1977, Free Flight 1 —Haise and Fullerton September 13, 1977, Free Flight 3 — ACCESS WAY 4 — AIRFIELD LIGHTING VAULT 5 — NOZZLE TUBE 6 — MAIN FUEL VALVE DIFFUSER p е TRANSFER A DUCTS b—— HATBANDS — — COOLANT CONTROL VALVE 5 — CRASH/FIRE/RESCUE 6 — MAIN FUEL VALVE 4 — Engle and Truly September 23, 1977, Free Flight.

Mathematical models used to update the Orbiter or payload; for photography; for possible manual.