Japan Air 21 from Tokyo Haneda. Sky Suite 787-8 is abbreviated as SS8, same as a locomotive. when JAL introduced their Sky Suite 787-9's, I wondered if their codes would be SS9G...
<a href="//commons.wikimedia.org/wiki/User:N509FZ" title="User:N509FZ">N509FZ</a>
<span class="int-own-work" lang="en">Own work</span>