643109
CLUTCH SPRING
Specifications
- Part Number
- 643109
- Manufacturer
- —
- ATA ChapterMaintenance system chapter
- 85 — Reciprocating EngineField reports: 80 (82%) · 85 (18%) — 11 reports
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- unknown
- Inventory ClassRotable, expendable, or consumable
- Expendable
- Certification
- OEM
- Aircraft Category
- Unknown
- Criticality
- Standard
- Life & ShelfTypical service/shelf life — verify against OEM data
- —
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
100%
Scrap Propensity (SDR-derived)
- SDR reports
- 11
- Replace events
- 8
- Repair events
- 0
- K-code events
- 8
Reporting window 2000-09-01 – 2010-10-25Dominant chapter ATA 80
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(2)
Alternate / Related Part Numbers(1)
55119pma replacement
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes2 applicable
Alternates1 found
ClassExpendable
CriticalityStandard
CategoryUnknown
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