Under what condition may a common car booster seat be used on board?

• A. The seat may only be used if a label specifically says that 'This restraint is certified for use in motor vehicles and aircraft'. The PIC is not required to install the seat, only to verify approval.
• B. The seat may be used if installed by the PIC.
• C. The seat can be used without a label.
• D. The seat must be stored in the cargo.

Answer: (A)

A child restraint like a common car booster seat may be used in the cabin only if it bears a label stating that it is certified for use in motor vehicles and aircraft. That label shows the restraint has been tested and approved for aviation use, which is required for on-board use. The PIC’s job is to verify that the restraint has this approved status, not to install it themselves; the installation is done according to the manufacturer’s instructions by the person occupying the seat, once the seat is approved for aircraft use.

If the restraint lacks that aircraft-use label, it isn’t permitted on board. A booster seat installed by the PIC isn’t the determining factor here, and using a seat without a valid label or storing it in cargo would not meet safety and regulatory requirements.