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PREFLIGHT INSPECTION
Cockpit/Cabin Inspection
1. Engine Start Selector Switches OFF
• Ensure both switches are OFF. If power is applied to the aircraft with an engine
selector switch in the ON/START position, the engine may start.
2. Gear Handle DOWN
• Before applying power to the aircraft verify that the landing gear handle is in the
down position.
3 .Control Gust Lock REMOVE AND STOW
• Remove gust lock straps and stow in a secure location.
4. START BATT Switch ON
• The START BATT switch will supply power for the rest of the interior and exterior
lighting preflight check. If ground power is connected, the pilot should select both
the START BATT and SYS BATT switches to ON to keep both batteries charged. If
ground power is available it should be used to maintain battery life as well as aid in
the exterior lighting check.
• Without ground power connected, only the START BATT switch should be
selected on. This will limit battery power depletion during the exterior preflight
check.
5. DC Voltage CHECK 23 VDC MINIMUM
FOR BATTERY START, 25 DC
MINIMUM FOR GPU START
• If battery voltage is too low, external power will be necessary to start first engine.
6. External Lights CHECKED
• position
• landing
• strobe/beacon
• ice prot insp
• TAXI/RECOGNITION
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