Graco 4EVER DLX SNUGLOCK Instruction Manual page 133

9-E Aircraft Installation
This child restraint is certified for use in
aircraft when using the harness system,
and ONLY when not using the SnugLock
®
lock-off.
This child restraint is not certified for
aircraft use when used as a booster seat
because aircrafts do not have shoulder
belts. NEVER use a vehicle lap-only belt
across front of child.
133