A central states manufacturing firm says it’s not sure what caused a series of vinyl siding failures that resulted in thousands of planes sitting on the ground in Oklahoma last year.
The Oklahoma City International Airport has been the site of more than 10 crashes in recent years, including one in 2014 in which three people died.
The company that owns VINYSIDE Inc., the manufacturer of the siding in question, said in a statement it has not received a report of the problems and was unable to determine what caused them.
The failure dates back to 2012, when VINYNX International Inc., a small manufacturing company based in Elkhart, Ind., said the roof siding had an imperfection in the vinyl.
The company said the problem was fixed, but it was not immediately clear if it was repaired or replaced.
In the statement, VINYSIDE said it’s cooperating with the Oklahoma City police investigation into the incidents, but did not say whether it has any information on who might have caused the failures.
The agency has said that investigators have interviewed witnesses and have reviewed thousands of pages of records from the time the sides were built.