LOS ANGELES (CBSLA.com) — The Federal Aviation Administration Friday announced the first wave of air traffic control towers to be closed because of sequestration cuts.

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On April 7, 149 towers will close across the country. Affected airports in Southern California include:

FUL – Fullerton Municipal Airport
OXR – Oxnard Airport
WJF – General William J. Fox Airfield, Lancaster
WHP– Whiteman Airport, Los Angeles
RAL – Riverside Municipal Airport
VCV – Southern California Logistics, Victorville

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Air traffic controllers will also be furloughed and have hours cut back at airports including LAX, but the FAA promises that airline safety will not be affected.

“You should not be concerned about your safety,” Doug Church of the National Air Traffic Controllers Association told KNX1070. “What you should be concerned about is the potential for delays and for the system overall to be less efficient than it currently is.”

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The furloughs are scheduled to go into effect on April 21.