WASHINGTON, Oct 8 (Reuters) - A group representing major

U.S. airlines said it is imperative the Federal Aviation

Administration accomplish some "quick wins" in the $12.5 billion

overhaul of the aging air traffic control system, according to a

letter seen by Reuters on Wednesday.

Airlines for America CEO Chris Sununu in a previously

unreported letter to Transportation Secretary Sean Duffy said

the FAA should quickly implement airspace modernization designs,

buy simulators to improve controller training, lay

telecommunications fiber and buy new radars and radios.

"These initial wins will create tangible benefits for the

traveling and shipping public, help coordinate messaging on

progress and boost optimism on the prospects of moving the

project to completion," Sununu wrote.