399353
EXHAUST VALVE
Specifications
- Part Number
- 399353
- Manufacturer
- PWA
- ATA ChapterMaintenance system chapter
- 85 — Reciprocating Engine
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Engine Accessories
- Inventory ClassRotable, expendable, or consumable
- Expendable
- Certification
- OEM
- Aircraft Category
- Unknown
- Criticality
- Critical
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
75%
Scrap Propensity (SDR-derived)
- SDR reports
- 16
- Replace events
- 3
- Repair events
- 1
- K-code events
- 2
Reporting window 1995-09-04 – 2012-06-14Dominant chapter ATA 85
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
No airframe data available for this part.
Data Sources(1)
- 2026-03-07
Quick Facts
AirframesUnknown
AlternatesNone recorded
ClassExpendable
CriticalityCritical
CategoryUnknown
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