H146
DOWNLOCK SWITCH
Specifications
- Part Number
- H146
- Manufacturer
- DOUG
- ATA ChapterMaintenance system chapter
- 32 — Landing Gear
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Landing Gear
- Inventory ClassRotable, expendable, or consumable
- Expendable
- Certification
- OEM
- Aircraft Category
- Unknown
- Criticality
- Critical
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
86%
Scrap Propensity (SDR-derived)
- SDR reports
- 53
- Replace events
- 44
- Repair events
- 7
- K-code events
- 4
Reporting window 1995-01-21 – 2014-10-22Dominant chapter ATA 32
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(22)
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes22 applicable
AlternatesNone recorded
ClassExpendable
CriticalityCritical
CategoryUnknown
Know your business mix?
Upload your part numbers and get instant analytics — airframe breakdown, ATA depth, PMA concentration, and more.
Coming Soon