Hydraulics Flashcards
What electrical problem forces RAT to deploy? Why?
AC BUS 1 and 2 fail. RAT needed to energise emergency generator
Which hydraulic systems use the PTU?
Green and Yellow
Which hydraulic system used for slats and flaps?
Green
What CAT downgrade would you expect from single hydraulic failure?
CAT 3 SINGLE
What law will aircraft be in after green hydraulic failure? How about blue? And yellow?
All cases normal law
When does the PTU operate?
When differential pressure in the green and yellow systems is greater than 500psi
What CAT would you expect from a dual hydraulic failure?
Cat 1
PTU requires integrity in receiving system, so ECAM directs PTU off in event of what?
Reservoir overheat
Reservoir low air pressure
Reservoir low fluid level
Which hydraulic system used for cargo doors?
Yellow
When does system logic inhibit PTU use?
During first engine start
If single engine taxi and park brake on
During cargo door operation + 40 seconds
What automatics available in single hydraulic failure?
All available
Which hydraulic failure leads to stopping problems?
G+Y (Y accumulator only, so 7 applications, no NWS)
Which hydraulic system used for engine reverser 1 and 2?
Reverser 1 is green, reverser 2 is yellow
Which dual hydraulic failure is least detrimental?
B+Y
Which hydraulic system used for landing gear?
Green
Which hydraulic system used for emergency generator?
Blue
What pressure is hydraulic system?
3000psi
What airspeed does RAT need?
140kts
Which hydraulic system used for alternate brakes?
Yellow
Which hydraulic system used for NWS?
Yellow
What is a good thing to look at in dual hydraulic failure?
QRH summary pages
Which hydraulic failure leads to controllability problems?
G+B (only 2 roll spoilers and one elevator)
Which hydraulic system used for slats only?
Blue
What hydraulic failure causes loss of normal brakes?
Green
Which hydraulic system used for normal brakes?
Green
What pressure does RAT pressurise blue system to?
2500psi
Which hydraulic system used for flaps only?
Yellow
