Certification operating time accumulated.

PRIMARY THRUSTERS RCS (12 PER AFT POD) PRIMARY THRUSTERS RCS (12 PER AFT POD) PRESSURIZATION COMPONENTS Figures 4-2 — Reaction control system. 4-7 4. ORBITER SYSTEMS 4. ORBITER SYSTEMS ................... 4-1 Propulsion ............................ 4-3 Power Generation ny ELECTRICAL POWER DISTRIBUTION AND CONTROL б ОҒ PLANETARY тес ORBITER DATA FAYLOADS ORBITER DATA FAYLOADS ORBITER DATA VOICE COORDINATION PAYLOAD.