Delta called the reduction in recline an effort to “make the in-flight experience more enjoyable.”
The airline said it "has no plans to add seats or reduce space between rows with this test – it's all about protecting customers' personal space and minimizing disruptions to multitasking in-flight."
The first A320 with the reduced recline will start flying this weekend and the change to all 62 A320s will take about two months to roll out, according to Delta. The airline plans to gauge customer and employee response.
In Expedia survey results in 2017, a majority of respondents -- 53 percent -- said they recline their seats on flights. Yet reclining a seat is also seen as an annoying behavior by some travelers.
A quarter of those responding to the survey said they would recline their seat "for retaliatory reasons," if a passenger sitting behind them were aggressive or rude.