42D1091A
FILTER BYPASS SW
Specifications
- Part Number
- 42D1091A
- Manufacturer
- Boeing
- ATA ChapterMaintenance system chapter
- 79 — Oil
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- unknown
- Inventory ClassRotable, expendable, or consumable
- Expendable
- Certification
- OEM
- Aircraft Category
- Unknown
- Criticality
- Standard
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
100%
Scrap Propensity (SDR-derived)
- SDR reports
- 18
- Replace events
- 18
- Repair events
- 0
- K-code events
- 1
Reporting window 1995-06-21 – 2017-01-25Dominant chapter ATA 79
Directional indicator only. Reflects what operators reported to the FAA when a difficulty was logged — not a fleet-normalized failure rate or a cost-based BER. Use alongside operator-specific data.
Airframe Applicability(7)
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes7 applicable
AlternatesNone recorded
ClassExpendable
CriticalityStandard
CategoryUnknown
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