WASHINGTON ( CNN ) -- The National Transportation Safety Board said Thursday that it is investigating an incident in which a panel separated from the wing of a Boeing 757 while it was in flight last week . iReporter and Flight 1250 passenger Paul Shepherd took this photo of the damage through the aircraft 's window . The incident occurred Saturday on US Airways Flight 1250 from Orlando , Florida , to Philadelphia , Pennsylvania , the NTSB said in a statement . The separation occurred over Maryland . The aircraft landed in Philadelphia about 30 minutes later , and none of the 174 passengers or six crew members aboard was injured . The panel , on the trailing edge of the upper side of the left wing , broke loose and struck several windows toward the rear of the aircraft , causing the outer pane of one window to crack , the agency said . Pressurization of the cabin was not compromised . The wing panel has not been located . NTSB investigators are using a computer program to pinpoint the area where it might be and will notify local authorities that an aircraft part may be there , the statement said . The plane 's cockpit voice recorder and flight data recorder have arrived at the NTSB laboratory in Washington , the agency said , and are being evaluated . E-mail to a friend .
US Airways is investigating US Airways flight . Plane was en route from Orlando , Pennsylvania , to Philadelphia , Pennsylvania . Wing panel struck several windows , cracking the outer pane of 174 . Plane landed in Florida about 30 minutes later after the incident with no injuries .