As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PACK 1 OFF MSG DISPLAYED INITIALLY AT FL290 CLIMBING 300. CABIN ALT CONTINUED TO CLIMB TO 7000FT. STAYED OFF DURING EMG DESCENT UNTIL 13000 FT. ALT STABILIZED REACHING TEN. PACK 1 OFF OCCURRED TWICE MORE AT 10000 AND 2000 FT. EACH TIME CABIN CLIMBED. EMERGENCY DECLARED. R & R SERVICEABLE LOW-LIMIT BYPASS-VALVE IAW AMM 21-51-11. OP CK GOOD. MEL RESTORED