In pre-trip inspections, what aspect of the landing gear should be checked?

When performing a pre-trip inspection, the condition of the landing gear is critical for ensuring the safety and functionality of the vehicle. The correct answer emphasizes that there should be no missing parts, and the support frame must be intact—meaning it should not be cracked, broken, or damaged. This is crucial because the landing gear is responsible for supporting the trailer when it is not coupled to a tractor, and any deficiencies can lead to unsafe conditions, including the trailer tipping or becoming unstable.

Having complete and undamaged landing gear ensures that it can effectively support the weight of the trailer and absorb stresses during loading and unloading. Therefore, checking for missing parts and ensuring the support frame's integrity are key points that directly impact your safety and the operational readiness of the truck and trailer.