What was found
PILOT REPORTS, DURING CLIMBOUT TO 350 PASSING THRU 260 CABIN PRESS CLIMBED THRU 10,000 FT. RETURNED TO MKE. MTC FOUND Y-DUCT IN AFT ACCESSORY COMPT SEPARATED. RESECURED DUCT, OPS CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT REPORTS, DURING CLIMBOUT TO 350 PASSING THRU 260 CABIN PRESS CLIMBED THRU 10,000 FT. RETURNED TO MKE. MTC FOUND Y-DUCT IN AFT ACCESSORY COMPT SEPARATED. RESECURED DUCT, OPS CHECK GOOD.