The Fifth Circuit Court of Appeals reversed summary judgment for an insurer in an aircraft liability coverage dispute, holding that the district court erred in concluding as a matter of law that the pilot who crashed the insured aircraft into a communications tower was excluded as a “renter pilot,” because policy language and an endorsement permitting rental or instructional use created ambiguity as to whether such pilots were covered and whether the pilot qualified as a renter, thereby presenting a genuine issue of material fact under Texas law.