As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER START RECALL LEFT PACK LIGHT EXTINGUISHES ON RECALL RESET. GROUNDED - YES. DURING INITAL EVALUATION FOUND PZTC 1 UNDER PRE FLT WITH SRADA INLET FAULT. PERFORMED PZTC 1 AND 2 BITE TEST REF B737-900 FIM 61-62 TASK 801. VERIFY GREEN LIGHT ON AND NO FAULT NOTED ON MASTER CAUTION RECALL.