As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS IS AN UPDATE TO THE PREVIOUS SDR DATED 8/13/2007. RT ENGINE FIRE WARNING LIGHT ILLUMINATED DURING FLIGHT. INVESTIGATION FOUND THE AFT FIRE SENSE LOOP IN THE TAIL CONE OF THE ENGINE WAS CHAFING ON THE TAIL PIPE AT A CERTAIN POWER SETTING. DUPLICATED DISCREPANCY. CORRECTED POSITIONING OF THE FIRE LOOP AND TESTED SYSTEM. ALL WORK PERFORMED IAW THE LEARJET 35 / 36 / 35A / 36A MAINTENANCE MANUAL.