Hydraulics

Question 1

HYD HEATER ACTIVE advisory

Answer 1

hydraulic fluid temp < 4
while active engine start, FCS PFBIT and BFWS should not be attempted until advisory cleared for as least 1 min.

Question 2

at what % Nr are HYD 1 & 2 system pumps providing full pressure and take over swashplate conversion actuators

Answer 2

58% Nr

Question 3

what does the Fluid Compensation valve do

Answer 3

moves additional fluid gained during ground checkout valve from HYD 1 &2 back to 3

Question 4

when do the FCCs take a snap shot of the hydraulic fluid level

Answer 4

at the start of rotors turning

Question 5

HYD fluid low detection levels

Answer 5

HYD X RSVR LO (1/2/3) posts after 20% fluid loss
-first detection 30cubic inches later (1/2) 45 cubic inches HYD 3
-second detection 40 cubic inches less than first (HYD 3 60 cubic inches)
detection level
-third detection 50 cubic inches less than the first detection