Hydraulics Flashcards
If a leak occurs in a pilot assist servo, i.e. collective boost, which of the indications shown below would not appear?
a. BACKUP PUMP ON advisory
The backup pump is the only pump that can supply hydraulic pressure to the __ and __
a. No. 2 stage of the tail rotor servo, APU accumulator
Loss of both the No. 1 hydraulic pump and back-up pump results in both stages of the tail rotor servo being unpressurized. The yaw boost servo is still press and the mechanical control system is still intact allowing limited tail rotor control. Because of the limited yaw control range available, a ____ is required.
a. roll-on landing at 40 KIAS or above
Loss of both the #2 Hydraulic Pump and the Backup Pump would result in the loss of
a. the #2 Primary Servos and the Pilot Assist Servos
What isolates a leak in the 1 ST stage primary servos?
a. The pilot by moving the SERVO OFF switch to 1st stage
When the fluid level in the number #1 hydraulic pump reaches 60% remaining, what caution will appear?
a. RSVR 1 LOW
With the TAIL SERVO switch on the miscellaneous switch panel in the BACK-UP position, which stage of the tail rotor servo is being pressurized hydraulic system?
a. 2nd stage, back-up hydraulic system
What component minimizes inherent control coupling?
a. mechanical mixing unit
With a leak in the #1 primary servos, what will be the final cautions/advisory if NO PILOT ACTION is taken?
HYD PUMP 1 FAIL
RSVR 1 LOW
T/R SERVO 1 FAIL
PRI SERVO 1 FAIL
BACKUP RSVR LOW
The caution appearing on the EICAS below indicates what? (T/R QUAD FAIL)
a. One or both of the tail rotor cables is broken or disconnected.
