GALVESTON, Texas (AP) -

A World War II-era fighter plane that crashed into Galveston Bay and killed both men on board had its throttle wide open at impact.
    
The Galveston County Daily News reported Wednesday that a federal review also found the wings of the vintage plane were level before hitting the water.
    
The National Transportation Safety Board on Tuesday released preliminary findings on the Oct. 23 crash that killed pilot Keith Hibbett of Denton and John Stephen Busby of the United Kingdom. Authorities are trying to determine what caused the accident.
    
The P-51 Mustang was operated by the Lone Star Flight Museum in Galveston. Busby paid for the flight on a calm, sunny day.
    
The NTSB says the pilot radioed controllers to say he planned to be airborne for about 20 minutes.