As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: RIGHT PACK WAS FLUCTUATING AND CAUSING THE PRESSURIZATION TO CLIMB AND DESCEND. OUTFLOW VALVE WAS OPENING AND CLOSING. ENGINE POWER WAS STEADY. **SUPPLEMENTAL REPORT FOR AALA202206276962: REPLACED RIGHT HAND FLOW CONTROL VALVE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 21-51-51.** (CLOSED)