SYS4 Test Review (Hydraulics) Flashcards
the rudder pedals control both the rudder and nose wheel steering when …
when the nose wheel is extended
full forward control column movement will deflect the elevator …
down 12*
which control surface is used as both a primary and secondary flight control?
spoilers
the rudder boost function is used to help …
with an asymmetric thrust condition
T-1 primary flight controls?
rudder, elevator, spoilers
what are the secondary flight controls?
flaps, speed brake, 3 trim systems
T-1 flap type
electronically controlled, hydraulically actuated double slotted fowler flaps
which secondary flight controls are hydraulically actuated?
flaps and speed brakes
the max speed for moving flaps from 10 to 30
170 KIAS
when does roll trim warning sound?
actuated more than 5 secs
which control surface is both primary and secondary?
spoilers
V_fe for 30 flap
165 KIAS
emergency pitch trim is accomplished ..
electronically with a switch on the pedestal
rudder is operated …
mechanically
when will speed brakes be automatically retracted?
1: throttles to above 60%N1
2: setting flaps beyond 10
speed brake control valve supplies _____ pressure to deploy spoilers on both wings
hydraulic
FLAP ASYM indicates
main flap asymmetry ( >7* differential)
Pitch attitude controlled by
mechanically actuated elevators
emergency pitch trim is ____ of the normal rate of trim
1/3
what happens when the hydraulic filter becomes clogged?
fluid bypasses clogged filter (no indication)
which hydraulic system is not part of the valve package?
wheel brakes
what happens when hydraulic pressure exceeds 1650 psi?
hydraulic pressure relief valve opens, routes excess to return line
purpose of bleed air in hydraulic reservoir?
prevents fluid foaming and provides constant supply of fluid to the pumps
hydraulic pressure stabilizes at
1500 psi
HYD LEVEL LO light turns on when
0.6 gal left in Hydr. reservoir
L/R H PUMP PRESS LO lights up when
< 750 psi
pilot intervention required if pressure reaches ____ psi
1850
hydraulic reservoir should be serviced when gauge level is
below the REFILL line
What does the hydr. filter do?
removes contaminants that could damage moving parts
What happens to hydr. components if one hydraulic pump is lost?
All hydraulic subsystems operate normally
High pressure is indicated by which light?
None, pressure gauge only
when does the hydraulic system start operating?
automatically at engine start
which systems require hydraulic pressure?
wheel brakes, speed brakes, flaps, gears
how do you know if a hydraulic pump has failed?
L/R H PUMP PRESS LO
the landing gear handle
sends an electrical signal to the hydraulic valve package to start the gear lowering/retraction sequence
max nose wheel deflection
45* using rudder pedals and differential power/braking
with flaps at 0 or 10, when will the gear horn sound?
throttle below 70%
using rudder pedals only, what is max deflection of nose gear
25*
when fully closed, the main gear fuselage doors ____ lock closed
mechanically
normal landing gear extension sequence
gears do not extend until inboard main doors are fully open
the max airspeed for emergency gear extension is …
150 KIAS
min strut extension for main gear
1.1 inch
normal landing gear sequence takes approx. ___ sec
7
normal strut extension for nose gear approx.
3.5 inches
max altitude for gear extension
20,000 ft MSL
when main gears are extended, _____ locks them down
mechanical down lock mechanism
which component allows gear handle to be raised if it is stuck down ?
downlink release button
during emergency gear extension, nitrogen pressure is used to
close the main gear fuselage doors
