74449
LIGHT
Specifications
- Part Number
- 74449
- Manufacturer
- Saab
- ATA ChapterMaintenance system chapter
- 33 — Lights
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Electromechanical
- Inventory ClassRotable, expendable, or consumable
- —
- Certification
- —
- Aircraft Category
- Regional
- Criticality
- Standard
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
100%
Scrap Propensity (SDR-derived)
- SDR reports
- 7
- Replace events
- 7
- Repair events
- 0
- K-code events
- 7
Reporting window 2002-01-07 – 2017-09-18Dominant chapter ATA 33
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(3)
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes3 applicable
AlternatesNone recorded
ClassUnknown
CriticalityStandard
CategoryRegional
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