As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT 4000 FT, WE RECEIVED A MOMENTARY FIRE DET FAIL LT ON THE RT ENG. ABOUT 2 SEC AFTER IT WENT OUT WE RECEIVED A MOMENTARY RT ENG FIRE WARNING. PERFORMED ENG CHECK LIST AND LANDED (RT FIRE BOTTLE WAS DISCHARGED). ADJUSTED FIRE LOOPS AND CHANGED OUR FIRE DETECT CONTROL UNIT.