Comm failure
In Male international Airport, Maldives we have a lot seaplanes. They land and depart from a lagoon just next to the RWY on the eastern side. The dep/landing lanes are designated as Northbound left/right or Southbound left/right. The following is true. I was the the TWR controller.
TMF: Ready for departure NL. (North left)
Me: TMF wind xxxxx NL cleared for take off.
Few minutes after departure
TMF: TWR TMF we have a comm failure, req to land SL.
ME:!!!!!!!!