As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE ENGINE WOULD STARVE FOR FUEL WHEN THE RIGHT TANK WAS SELECTED. THE RIGHT FUEL HEADER TANK (REAR) WAS REMOVED. BOTH LINES INTO THE HEADER TANK WERE PLUGGED WITH MIL-6000 HOSE COUPLING MATERIAL. THE EXPOSED HOSE INTERIOR WAS NOTICEABLY DETERIORATED. IF HOSES WERE ORIGINAL, THEY COULD BE 20 YEARS OLD. THE A/C WAS APPROVED FOR AUTO GAS. IT HAD ALSO USED 100LL.