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in the fixed position of the pilot seat. Inspect where the seat lock pins fit; check the pin and seat rail grips for wear and serviceability. [Figure 5-6] 

The battery and ignition switches need to be in the OFF position at the beginning of the preflight in- spection. They will be turned on and then off again to check the different components operated by the power source during the preflight. While checking the ignition switches, check that the strobe is operational if one is installed. Exercise the primer or primer bulb, if the PPC is so equipped; you should feel resistance when exercised. Faulty primers can interfere with proper engine operation. 

Manipulate the engine throttle control by slowly moving through its full range of motion to check for binding or stiffness. On two-stroke engines with oil injection, it is important to check that the oil injection mechanism is moving freely. [Figure 5-7] 

Set the altimeter to the field elevation or set in the barometric pressure, if equipped. Turn on the ignition or engine instrument system master and make note of the fuel quantity gauge indications, if applicable, for comparison with an actual visual inspection of the fuel tank(s) during the exterior inspection. 

Inspect for any signs of deterioration, distortion, and loose or missing bolts or locknuts. Gently  shake the cart to determine if objects and airframe parts are loose and need to be tightened. Treat all aircraft and their components with respect and care while con- ducting a preflight. As with all aircraft, the PPC does not need to be “over-handled” to perform an adequate preflight inspection. Check that all cables are free of kinks, frays, abrasions or broken strands; check each end of each flying cable for bolt security and check that the thimbles are not twisted or elongated. 

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