As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FIRE LOWER CARGO AFT WARNING CAME ON PASSING 6000' ON CLIMB AND WENT AWAY. PRIOR TO ACCOMPLISHING QRH AGAIN, CAME ON DURING DESCENT AROUND 4000' AND WENT AWAY PRIOR TO QRH.(<P>INSTALLED SMOKE DETECTOR LWR AFT 2B PER AMM 26-16-01-401-008. PROCEDURE TEST PER AMM 26-16-01-864-018. OPS CHECK GOOD. NO DEFECTS NOTED</P>)