(Reuters) -Boeing Co’s shares fell 6% in morning buying and selling on Friday after the U.S. planemaker halted deliveries of some 737 MAXs as a consequence of a brand new provider high quality downside by Spirit AeroSystems (NYSE:).

The difficulty will seemingly have an effect on a “vital” variety of undelivered 737 MAX airplanes each in manufacturing and in storage, and will end in lowered 737 MAX deliveries within the close to time period, Boeing (NYSE:) disclosed on Thursday.

“I do suppose that is an overreaction from the inventory, I can perceive why it is a shoot first and ask questions later as a result of Boeing has impaired their belief with buyers over the fixed and repeated errors over the previous few years,” mentioned Thomas Hayes, chairman and managing member at Nice Hill Capital.

Boeing has been plagued with provide chain complications because it pushes to ramp up manufacturing of the bestselling MAX narrowbody jet, in addition to its widebody 787 Dreamliner.

The corporate in February needed to briefly halt deliveries of the 787 Dreamliner to conduct extra evaluation on a fuselage part.

The newest difficulty can be a headache for airways ready for deliveries. Southwest Airways (NYSE:) expects the problem to impression its present supply schedule, whereas American Airways (NASDAQ:) mentioned it was working with the planemaker to know the impact.

United Airways, nonetheless, mentioned on Thursday, it didn’t “count on any vital impression on capability plans for this summer time or the remainder of the yr.”

Analysts additionally fear that the newest hiccup will weigh on Boeing’s money move.

Earlier this yr, the planemaker reported its first optimistic free money move since 2018, rising from two deadly crashes of 737 Max that prompted a worldwide grounding of the airplane.

The newest high quality difficulty pertains to a fuselage becoming equipped by Spirit and is believed so far again to 2019, Boeing mentioned, including it was not a security of flight difficulty and in-service planes can proceed to function.

Shares of Spirit, which manufactures fuselage, thrust reversers, engine pylons and wing elements for the 737 MAX airplanes, slumped 18.4%.

“There’s a basic view from our specialists that these gamers merely do not need the expert laborers essential to assist the manufacturing ramp that OEMs resembling Boeing and Airbus are focusing on,” mentioned Third Bridge analyst Christopher Raite.