257 QUESTIONS | WITH ACTUAL
SOLUTIONS!!
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2 of 257
Term
What is the normal operating pressure of the MRG LO system?
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Unloading valve maintains the Unloading valve maintains the
system at 16psi system at 10psi
Unloading valve maintains the Unloading valve maintains the
system at 20psi system at 14.5psi
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3 of 257
Definition
The OD box operator should position the change over valve in the
manual position. This allows the manual servo valve to direct
hydraulic oil to the OD box. Then the operator can change the pitch
of the propeller by moving the manual joystick located on the
manual servo valve. The operator can monitor pitch as well as
change from negative to positive pitch all at the OD box.
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, How does the OD box
What is the function of the LO operator switch from one
strainer in the LO system? mode to the other?
Why does hearing conservation Explain the control valve operations
apply to Engineers? in the HOPM.
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4 of 257
Term
What automatic shutdowns are associated with the GTG?
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T = 55 degF, 185 degF local, 270 degF babitt,
or temperature continues to rise 20 degF after slowing one major speed change
high alarm = 1641 ft-lbs,
high-high alarm = 1875 ft-lbs,
PACC take thrust control and slow both shafts one major speed change. Call up
the torque limits on the PACC, continue to slow the affected shaft until torque in
below 1476 ft-lbs