As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 25 - LOS - NR 1 MANIFOLD FAIL LIGHT ILLUMINATED DURING CLIMB. PERFORMED ABNORMAL PROCEDURE. SUPPLY SELECTOR AND PACK OFF. LIGHT DIDN'T GO OUT WITH SYSTEM UNPRESSURIZED AND PNEU TEMPERATURE BELOW 120 DEGREES. LEFT SYSTEM UNPRESSURIZED AND DEACTIVATED FAULTY WARNING SYSTEM. PULLED MANIFOLD FAILURE DET LT LOOP 1 C/B. (M)