4639003009
GEARBOX
Specifications
- Part Number
- 4639003009
- Manufacturer
- UROCOP
- ATA ChapterMaintenance system chapter
- 65 — Tail Rotor Drive
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Engine Accessories
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- OEM
- Aircraft Category
- Helicopter
- Criticality
- Critical
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
100%
Scrap Propensity (SDR-derived)
- SDR reports
- 10
- Replace events
- 3
- Repair events
- 0
- K-code events
- 4
Reporting window 2009-03-25 – 2017-05-22Dominant chapter ATA 65
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)
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes1 applicable
AlternatesNone recorded
ClassRotable
CriticalityCritical
CategoryHelicopter
Know your business mix?
Upload your part numbers and get instant analytics — airframe breakdown, ATA depth, PMA concentration, and more.
Coming Soon