FILE PHOTO: A plane flying to the rising sun behind power lines in Los Angeles, California, United States, October 1, 2015. REUTERS / Lucy Nicholson
WASHINGTON (Reuters) ̵
In a separate advisory to operators, FAA said according to flight tracking applications, the nearest civil aircraft was operating within about 45 nautical miles of a U.S. Global Hawk drone when it was shot down at a Iranian surface-to-air missile this week.
"There were numerous civil aviation aircraft operating in the area at the time of the intercept," FAA said.
The agency said it was concerned about the escalation of tension and military activity within close proximity to high volume civil aircraft routes as well as Iran's willingness to use long-range missiles in international airspace with little or no warning.
Reporting by David Shepardson in Washington; writing by Jamie Freed; Editing by Michael Perry