Pressurization and air-conditioning systems— Continued environmental control systems—Con- tinued bleed-air system—Continued engine bleed-air secondary pres- sure-regulating and shutoff valve, 3-3 to 3-4 primary bleed-air overpressure switch, 3-4 secondary bleed-air overpressure switch, 3-4 equipment cooling systems, 3-15 to 3-28 air-to-air system, 3-15 to 3-16 avionics airflow valve, 3-15 avionics cooling fans, 3-16 avionics fan control pressure switch, 3-16 avionics flow/temperature sensor, 3-15 avionics ground cooling fan, 3-16 avionics ground cooling fan check valve, 3-16 avionics ram air valve, 3-15 to 3-16 avionics undercool warning temperature sensor, 3-16 ECM cooling air control valve, 3-16 emergency ram air scoop, 3-16 rear cockpit avionics cooling fans, 3-16 vapor cycle air-conditioning system, 3-16 to 3-28 maintenance, 3-26 operations and components, 3-17 to 3-26 safety precautions, 3-28 servicing equipment, 3-27 to 3-28 vapor cycle theory, 3-17 SH-60B helicopter environmental control systems (ECS), 3-28 to 3-30 avionics cooling, 3-30 RCS control panel, 3-29 to 3-30 structure of the atmosphere, 3-1 to 3-2 atmospheric considerations, 3-2 atmospheric pressure, 3-1 to 3-2 Radar liquid cooling system, 1-20 to 1-21 Rain repellent utility system, 1-28 to 1-30 R Ram air valve, 1-21 References, AII-1 to AII-4 S SH-60B helicopter environmental control systems (ECS), 3-28 to 3-30 Shielded mild and flexible confined detonating cords, 2-20 to 2-21 Sliding canopy system, 2-8 to 2-11 SMDC and FCDC maintenance and inspection requirements, 2-26 to 2-30 SMDC one-way transfer, 2-22 Stencel SJU-8/A ejection seat, 6-44 to 6-71 S-3 aircraft, deice and anti-icing systems for the, 1-11 to 1-17 Survival kit RSSK-8A-1, 6-22 to 6-23 T Thermal radiation protection utility systems, 1-34 to 1-35 TMU-70/M, low loss, closed loop, liquid oxygen servicing trailer, 5-5 to 5-11 U Utility systems, 1-1 to 1-35 auxiliary bleed-air systems, 1-1 to 1-23 anti-g system, 1-2 to 1-5 anti-g system filter, 1-5 anti-g system maintenance, 1-5 pressure regulating (anti-g) valves, 1-3 to 1-5 quick disconnects, 1-5 typical anti-g system, 1-3 bleed-air leak detection, 1-18 to 1-19 bleed-air leak detector control, 1-18 bleed-air leak sensing elements, 1-18 engine start port leak detector, 1-18 to l-19 deice and anti-icing systems for the S-3 aircraft, 1-11 to 1-17 bleed-air solenoid valve, 1-16 to 1-17 deice pressure regulating valve, 1-14 to 1-16 deice thermostatic switch, 1-17 probe sensor temperature trans- mitter, 1-17 wing and empennage deice timing controller, 1-17 INDEX-6