Concerns over their safety forced the grounding of all 787s in January.

BBC: US lifts Boeing Dreamliner ban

The game began with a safety on an intentional grounding call on Brady, and later, a fumble recovery deep in their own territory was negated by a penalty for too many players on the field.

WSJ: Super Bowl XLVI: Giants Take a Victory Lap That No One Expected

But incidents relating to battery malfunction earlier this year raised some concerns over its safety and led to the grounding of the fleet.

BBC: Boeing 787 Dreamliner

Grounding an airliner opens the door to damaging its reputation for safety, say experts.

CNN: Can the 'game-changer' still live up to its name?