As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT PACK OVERPRESSURE ON CLIMB-OUT OF 5000 FT, RESET PACK UPON CLIMBING LT PACK OVERTEMP MESSAGE. AIR RETURN TO ORF. LANDING WEIGHT = 41,300. MAX BTMS = 4. REMOVED AND REPLACED LT PRSOV IAW 21-51-43, OPS AND LEAK CHECK GOOD. AIRCRAFT LANDING WEIGHT WITHIN LIMITS, NO FURTHER ACTION REQUIRED. (M)