631397
CYLINDER HEAD
Specifications
- Part Number
- 631397
- Manufacturer
- ECI
- ATA ChapterMaintenance system chapter
- 85 — Reciprocating Engine
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Engine Accessories
- Inventory ClassRotable, expendable, or consumable
- —
- Certification
- —
- Aircraft Category
- General-Aviation
- Criticality
- Critical
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
33%
Component-change rate (FAA K-code)
- SDR reports
- 3
- Replace events
- 1
- Repair events
- 0
- K-code events
- 1
Reporting window 2004-03-11 – 2010-02-23Dominant 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(3)
Alternate / Related Part Numbers(1)
AEC631397pma replacement
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes3 applicable
Alternates1 found
ClassUnknown
CriticalityCritical
CategoryGeneral-Aviation
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