Boeing (NYSE: BA) has requested that 60 737 MAX jets be grounded temporarily to address an electrical power system issue in those jets. The aerospace manufacturer said it reached out to 16 carriers who operate the jet due to a potential issue with a backup power control unit. U.S. customers Southwest Airlines (NYSE: LUV), American Airlines Group (NASDAQ: AAL), and United Airlines Holdings (NASDAQ: UAL) were among the airlines impacted, according to CNBC. Image source: Boeing. The issue, though minor, is another setback for Boeing's long-troubled 737 MAX program. The plane was grounded in March 2019 after a pair of fatal accidents and was only cleared to return to service last fall. Boeing is working with the Federal Aviation Administration on this latest issue, which requires airlines to check and verify that "a sufficient ground path exists for a component of the electrical power system." Although investors will be loathed to see another issue with the 737 MAX, the nature of this warning appears to indicate that it is an issue with a small number of jets and not a design flaw. It is also unrelated to the systems that were responsible for the fatal crashes and subsequent grounding. 10 stocks we like better than BoeingWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Boeing wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of February 24, 2021 Lou Whiteman has no position in any of the stocks mentioned. The Motley Fool recommends Southwest Airlines. The Motley Fool has a disclosure policy.Source