451 Fire Protection (ATA 26) service difficulty reports for the Boeing 777 (all variants) — 1.7% of all reported difficulties.
Most reported components
- SMOKE DETECTOR 206
- CIRCUIT CARD 28
- FIRE LOOP 17
- FIRE DETECTOR 17
- FIRE WARNING 15
- SMOKE WARNING 13
- CONNECTOR 11
- WIRE HARNESS 11
- OVERHEAT LOOP 10
- FIRE BOTTLE 9
- WARNING SYSTEM 8
- DETECTOR 7
- EXTINGUISHER 7
- FAN 6
- WIRE 6
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).