What happens when engin - Study guides, Class notes & Summaries

Atlas Air 747-400 Air System What happens when Bleed Air switch is placed OFF - Answer- 1. Off light illuminated 2. Engine bleed air valve closed 3. Eicas >BLEED # OFF 4. PRV closed 5. HP Valved closed Bleed Air switch OFF, Nacelle Anti-Ice switch on: - Answer- Unless non-normal condition has been detected, PRV closed position will be over ridden. When will PRV not open for Nacelle Anti-ice or Thrust reversers - Answer- 1. PRV failed closed or closed due to overheat 2. Start val...