B737 400 oral exam stuvia - Study guides, Class notes & Summaries

21 In simple terms, what does this valve do? - ANSWERAns: it connects the engine feed system with the refueling station. 22 What is the primary source for DC power? - ANSWERAns: three normal TRs and a ground service TR (battery charger) 32 If a leak developed in the lines of the electric pump and all pressure was lost, would the PTU still be operational? - ANSWERAns: yes 27 What happens to the engine bleed valves upon engine shutdown? - ANSWERAns: they automatically close (pneumatically...