What was found
APPROACHING 17,000 FT UNABLE TO CONTROL CABIN PRESSURE DESCENDED TO 10,000 FT TO HOLD 8,500 FT CABIN. AIRTURN BACK TO (CVG). TROUBLESHOT SYSTEM, FOUND DEBRIS AROUND AFT AIRSTAIR ENTRY DOOR SEAL, CLEANED SAME. PRESSURIZED AIRCRAFT WITH APU. OPERATIONS CHECK GOOD. (M)