5521981
BATTERY PACK
Specifications
- Part Number
- 5521981
- Manufacturer
- —
- ATA ChapterMaintenance system chapter
- 33 — Lights
- CapabilitySystem area (hydraulics, avionics, landing gear…)
- Environmental / Cabin
- Inventory ClassRotable, expendable, or consumable
- Rotable
- Certification
- PMA
- Aircraft Category
- Unknown
- Criticality
- Standard
Service Reliabilityfrom FAA SDR (Service Difficulty Reports)
100%
Scrap Propensity (SDR-derived)
- SDR reports
- 20
- Replace events
- 20
- Repair events
- 0
- K-code events
- 19
Reporting window 1996-11-22 – 2021-10-29Dominant 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(6)
Alternate / Related Part Numbers(1)
AD-55-2198-1pma replacement
Data Sources(1)
- 2026-03-07
Quick Facts
Airframes6 applicable
Alternates1 found
ClassRotable
CriticalityStandard
CategoryUnknown
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