660021128
CONTROL VALVE
Specifications
- Part Number
- 660021128
- Manufacturer
- —
- ATA ChapterMaintenance system chapter
- 21 — Air ConditioningField reports: 21 (50%) · 75 (50%) — 2 reports
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Hydraulics
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- OEM
- Aircraft Category
- Unknown
- Criticality
- Unknown
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
—
Component-change rate (FAA K-code)
- SDR reports
- 2
- Replace events
- 2
- Repair events
- 0
- K-code events
- 1
Reporting window 1995-06-30 – 2000-11-18Dominant chapter ATA 21
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)
Alternate / Related Part Numbers(1)
979578-1pma replacement
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes1 applicable
Alternates1 found
ClassRotable
CriticalityUnknown
CategoryUnknown
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