66 Ice & Rain Protection (ATA 30) service difficulty reports for the Boeing 747 — 0.2% of all reported difficulties.
Most reported components
- TERMINAL 7
- CONTROLLER 6
- THERMOSTAT 6
- HEATER 4
- WIRE 4
- CONTROL UNIT 4
- SENSOR 4
- WINDSHIELD WIPER 3
- UNKNOWN 3
- SWITCH 2
- RELAY 2
- ANTI-ICE VALVE 2
- CONNECTOR 2
- WINDOW 2
- WINDSHIELD 1
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).