(a) When an advisory is received from the Ketchikan Flight Service
Station stating that an aircraft is on final approach to the Ketchikan
International Airport, no person may taxi onto the runway of that airport
until the approaching aircraft has landed and has cleared the runway.
(b) Unless otherwise authorized by ATC, each person operating a large
airplane or a turbine engine powered airplane shall --
(1) When approaching to land at the Ketchikan International Airport,
maintain an altitude of at least 900 feet MSL until within three miles of
the airport; and
(2) After takeoff from the Ketchikan International Airport, maintain
runway heading until reaching an altitude of 900 feet MSL.