As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
5 FEET OF THE TOP RT WING FABRIC FAILED. POLYFIBER AC COATINGS TB 89-1D. STATES FABRIC WEIGHING LESS THAN 2.4 OZ SHOULD BE USED ON AC WITH ENGINES UP TO 145 HORSEPOWER THIS AC HAD A 300 HP ENGINE INSTALLED LT WING HAD BROKEN RIB STITCHING BUT FABRIC HAD NOT FAILED YET. (SW15200410524)