A helicopter pilot looks at his flight plan on an Apple Inc. ipad over Weehawken, New Jersey, U.S., on Wednesday, Aug. 10, 2011.
Scott Eells—Bloomberg/Getty Images
Updated: April 29, 2015 12:27 PM ET | Originally published: April 29, 2015 10:59 AM EDT

Dozens of American Airlines flights were delayed Tuesday evening after the iPad software its pilots use to access flight plans suddenly went blank.

American Airlines confirmed the software glitch on Twitter. An airline spokesperson later said the glitch had stalled “several dozen” flights, Quartz reports.

Stranded passengers in Chicago and Dallas also tweeted about the glitch.

American Airlines digitized its flight plans in 2013, replacing weighty paper-based tomes with Apple’s popular mobile tablet. The software in question is made by Jeppesen, a Boeing-owned company that specializes in aviation navigation and logistics products.

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