The letter on the use of efficient alternative energy sources for taxiing is well-intentioned, but not real-world in its proposal to use alternative mag-lev or similar technology to prevent long times of extended ground running to protect the environment (AW&ST Oct. 13, p. 10). My employer has a large hub at Salt Lake City. If you look at the airport configuration, you will see three large runways that roughly parallel: 16L, 16R and 17. Due to possible cutbacks in tower staff, the ...


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