What restrictions apply to carrying cargo in the passenger compartment of an airplane operated under FAR Part 121?

Cargo carried in the passenger compartment of an airplane operated under FAR Part 121 must be properly secured to withstand certain load stresses. This requirement ensures that the cargo does not become a projectile during turbulence or other flight conditions, which could pose a risk to the safety of the aircraft and its occupants. Proper securing means that items must be restrained adequately to prevent them from shifting or causing injury or damage during the flight.

Securing cargo is crucial to maintaining the weight and balance of the aircraft and ensuring overall stability. Regulations are put in place to enhance safety and mitigate risks that could arise from improperly stowed items, making compliance essential for any commercial operation under Part 121.