What was found
FUME EVENT DURING CLIMB OUT. PACK 1 ALREADY DEFERRED. PACK 2 WAS THE CAUSE. FOLLOWED QRM 9.1 PROCEDURE. FOLLOWED AIRPACK 1+2 FAULT PACK 2 OFF. RAM AIR OPENED. AIR RETURN-REACTIVATED #1 PACK IAW AMM 21-51-00. PERFORMED SPIRIT AIRLINES PACK BURN OUT PROCEDURE. PERFORMED OPS CHECK OF #1+2 BLEED SYSTEMS IAW AMM 36-11-00. NO DEFECTS NOTED. PERFORMED APU BLEED CHECK IAW AMM 36-12-00. NO DEFECTS NOTED. PERFORMED PACK 1+2 CHECK IAW AMM 21-51-00. NO DEFECTS NOTED. A/C OK FOR CONTINUED SERVICE