The airship Planescaller has not worked since Update 5. Neither the guild level 70 Planescaller nor the Gold Seal guild level 56 Planescaller works. No matter where you place them on the ship, the ship navigators won't to take you to Amrath.

Its been bug reported hundreds of times but we've seen no acknowledgment of it by the devs. Please let us know you are aware so we can stop bug reporting it.