He cited technology such as side-scan sonar and magnetometers but said finding a lost plane such as the Earhart craft is `` more a function of funding than technology . '' A grainy sonar image has been spotted , an aircraft recovery group says . Historian at Amelia Earhart Birthplace Museum skeptical of anything conclusive showing up . Comment:
A grainy sonar image has been spotted , an aircraft recovery group says . Historian at Amelia Earhart Birthplace Museum skeptical of anything conclusive showing up . Comment: