What was found
DURING FLIGHT 3172, RT ENGINE INTAKE LIP ACCUMULATED SIGNIFICANT ICE WITH ALL ENGINE ANTI-ICE SYSTEMS WORKING OK. MAINTENANCE CONDUCTED OPERATIONAL CHECK IAW SF340 MM CHAP 30. ALL CHECKS GOOD, INSTALLED SERVICEABLE DE-ICE CONTROL MODULE P/N 44730-501, S/N ON 6248467, S/N OFF AO0482. RE-INSTALLED PANELS 465BR & 465AE. ALL CHECK GOOD REPAIRED WIRING.