ALT FTHR PUSHBUTTONS (FTHR segment white)

(guarded, alternate action) LIFT GUARD and PUSH - activates #1or #2 auxiliary feather pump when the CLA at START/FEATHER or below switchlight segment (green) - indicates auxiliary feather pump is producing pressure

AUTOFEATHER PUSHBUTTON (alternate action)

PUSH - SELECT segment (white)

• A/F SELECT annunciation appears on the ED, just above the NP gauges
• arms autofeather system for take-off under the following conditions: • power levers beyond 60° PLA • torques above 50% • condition levers at MAX/1020 • engines running

PUSH - SELECT segment (white)

• initiates autofeather test sequence under the following conditions: • CONDITION levers – FUEL OFF or START/FEATHER • POWER levers – DISC • AUTOFEATHER switch - Press. Check SELECT advisory light illuminates

Observe the following messages on the ED: • A/F SELECT • A/F TEST IN PROGRESS • UPTRIM and ITT red radial increases • NTOP changes to MTOP and torque rating and torque bugs increase 10% • A/F ARM appears twice • AF TEST PASS • MTOP changes to NTOP and torque rating and torque bugs decrease 10% and ITT radial decreases NOTE: If autofeather test is aborted, A/F TEST ABORT message will appear on ED. If autofeather test fails, A/F TEST FAILED message will appear on ED.

• AUTOFEATHER switch - Press. Check SELECT advisory out and A/F SELECT message off on ED