What could the belt extensions be used for? Exactly what does a seatbelt extension look like?
A seat belt extension is for a person who is more "girthy" than the standard seat belt will accomodate. It is approximately a foot long with both a male and female end, it hooks to the exsisting seat belt. Each aircraft carries several. Typically a girthy person will ask a flight attendant for one and then steal it when they depart the A/C so they don't suffer the embarressment of having to ask again. I work line maintenance for a major airline. Here's a good one, answering a callback at departure time because the seatback won't stay upright. I board the plane, ask the F/A which seat has the "problem" and look down the aisle to see a girthy person barely fitting into the seat. I tell the F/A that she will have to explain to the passenger that his/her leg is so big it is mashing the recline button.