S90AT4
PROP BLADE
Specifications
- Part Number
- S90AT4
- Manufacturer
- MCAULY
- ATA ChapterMaintenance system chapter
- 61 — Propellers / Propulsors
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Engine Accessories
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- OEM
- Aircraft Category
- General-Aviation
- Criticality
- Critical
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
71%
Scrap Propensity (SDR-derived)
- SDR reports
- 9
- Replace events
- 5
- Repair events
- 2
- K-code events
- 7
Reporting window 1997-03-07 – 2007-03-01Dominant chapter ATA 61
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(1)
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes1 applicable
AlternatesNone recorded
ClassRotable
CriticalityCritical
CategoryGeneral-Aviation
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