Plunket is in the hotseat after breaching its own infant safety guidelines by installing Prince George's child restraint back-to-front in the royal limo.
The baby-care agency issued photos of preparations for the Duke and Duchess of Cambridge's visit, showing Plunket car seat services technician Aethalia O'Connor installing a seat in the car to be used by the royals.
"If it can't be installed correctly we need to work out a way we can make it correct," she said. "We need to make sure the baby is safe."
The problem was, the car seat was installed facing forward, at odds with Plunket's official guidelines.
To limit the risk of whiplash, the American Academy of Pediatrics recommends children remain rear-facing until age 2 or until they reach the seat's height limit.