System Checks

Question 1

Overspeed Governors-TEST

Answer 1

a. Prop Levers-Full Forward
b. Power Levers-Advance to below 1900 RPM
c. Prop Test Switch-HOLD to prop gov test
d. Power Levers- increase, monitoring ITT, torque, and RPM until governing action is observed 2000+/-100 RPM
e. Reduce power levers-Reduce to 1900 RPM
f. Prop Test Switches-Release

Question 2

Primary Governors-Exercise

Answer 2

a. Prop Lever-HIGH RPM
b. Power Lever- 1900 RPM
c. Prop Lever- Retard, observe decreasing RPM
d. Prop Lever-HIGH RPM

Question 3

Autofeather-Checked and Armed

Answer 3

a. Power Levers-Idle
b. Autofeather Arm Switch-TEST
c. Check propeller remains unfeathered and AUTOFEATHER ARM annunicaitor lights remains out.
d. Power Levers-Approx 500Ft pounds torque
e. Check both AUTOFEATHER AR< annunciator lights illuminate.
f. Slowly retard the left engine power lever and check that the right AUTOFEATHER ARM light extinguishes at approximately 400Ft pounds torque. Continue retarding the left engine power lever and check that both the left and right AUTOFEATHER ARM lights are extinguished and that the left prop starts to feather at approximately 200 FT pounds of torque.
NOTE: As the prop blades rotate towards feather the torque load will increase above switch setting and the system will cycle during ground test giving a fishing indication on the ARM lights.
g. Repeat the preceding check with the right engine.
h. AUTOFEATHER ARM SWITCH-ARM