Well this is interesting...
If your MacBook Pro is 15 inches and was issued between September 2015 and February 2017, you may no longer be able to fly with it, per a Tuesday ban from the Federal Aviation Administration (FAA). Regulators said they have alerted major U.S. airlines of their recommendation.
check your laptop:
https://support.apple.com/15-inch-macbook-pro-battery-recall