521100
GCU
Specifications
- Part Number
- 521100
- Manufacturer
- VICKERS
- ATA ChapterMaintenance system chapter
- 24 — Electrical Power
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Electromechanical
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- OEM
- Aircraft Category
- Multi-Category
- Criticality
- Standard
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
- 2
Reporting window 2010-06-23 – 2013-05-06Dominant chapter ATA 24
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(8)
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes8 applicable
AlternatesNone recorded
ClassRotable
CriticalityStandard
CategoryMulti-Category
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