127 Oxygen (ATA 35) service difficulty reports for the Boeing 747 — 0.5% of all reported difficulties.
Most reported components
- OXYGEN MASK 34
- OXYGEN BOTTLE 21
- OXYGEN SYSTEM 11
- BOTTLE 10
- STOWAGE BOX 4
- HOSE 3
- VALVE 3
- CYLINDER 3
- TRANSDUCER 3
- REGULATOR 3
- TUBE 3
- CONTROL UNIT 2
- B-NUT 2
- PANEL 2
- INDICATOR 2
Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).