As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT OUTFLOW VALVE AFT GATE ANTI SKATING FOIL PEELING. GROUNDED - YES. REMOVED THE LOOSE FOIL FROM THE AFT OUTFLOW VALVE AFT GATE REF B737-800 AMM 21-31-03-400-801 STEP 3F(4). THE OUTFLOW VALVE IS SERVICEABLE, NO FURTHER MAINTENANCE NECESSARY.