Due to this high prevalence, vertebral artery hypoplasia (VAH) has not yet been considered an independent risk factor for ischemic stroke [1,2].
How to use your own headphones on Americanâs new 777-300ER. Passengers traveling in First and Business Class on Americanâs new 777-300ER are provided with Bose QuietComfort 15 Acoustic Noise Canceling headphones to use during the flight.
3. Use social media. All the airlines employ a person to monitor their social media accounts, most notably Facebook and Twitter. If you tweet your problem and flight confirmation number (or post it on the airline's Facebook page), you'll very likely get a response.