N7 Autopilot User Manual (ArduPilot) v1.0
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3 FIRST FLIGHT & TUNING
This section covers the information you will need to know for your first flight and
some basic configuration to get your copter flying reasonably well.
3.1 Pre-arm Safety Check
ArduPilot includes a suite of Pre-arm Safety Checks which will prevent the vehicle
from arming its propulsion system if any of a fairly large number of issues are
discovered before movement including missed calibration, configuration, or bad
sensor data. These checks help prevent crashes or fly-aways, but some can also
be disabled if necessary.
DANGER
Never disable the arming checks (ie ARMING_CHECK not = “1”, except for bench testing.
Always resolve any pre-arm or arming failures BEFORE attempting to fly. Doing otherwise
may result in the loss of the vehicle.
Common Reasons for Arm Failure
⚫ check firmware or FRAME_CLASS
⚫ 3D Accel calibration needed.
⚫ safe switch
⚫ RC not calibrated.
⚫ Baro not healthy
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