Enlarge / A discolored plume of exhaust was visible beneath the Super Heavy booster's Raptor engines on the Starship rocket's April 20 test flight, a likely indication of a propellant leak or fire in the engine compartment. (credit: Patrick T. Fallon/AFP via Getty Images )

The Federal Aviation Administration said Friday it has closed an investigation into the problems SpaceX encountered on its first full-scale Starship test launch in April, but federal regulators won't yet give a green light for the next Starship flight.

"The closure of the mishap investigation does not signal an immediate resumption of Starship launches at Boca Chica," the FAA said in a statement, referring to the location of SpaceX's Starship launch facility at Boca Chica Beach in South Texas.

The nearly 400-foot-tall Starship rocket, the largest ever built, is standing on its launch pad in Texas for the upcoming test flight, which could happen before the end of this month, pending FAA approval.