331500B

APU

OEM

Specifications

Part Number
331500B
Manufacturer
—
ATA ChapterMaintenance system chapter
49 — Airborne Auxiliary PowerField reports: 49 (100%) — 3 reports
CapabilitySystem area (hydraulics, avionics, landing gear…)
unknown
Inventory ClassRotable, expendable, or consumable
Expendable
Certification
OEM
Aircraft Category
—
Criticality
—
Life & ShelfTypical service/shelf life — verify against OEM data
—

Service Reliabilityfrom FAA SDR (Service Difficulty Reports)

33%
Component-change rate (FAA K-code)
low confidence
SDR reports
3
Replace events
2
Repair events
0
K-code events
1
Reporting window 2012-08-10 – 2013-09-19Dominant chapter ATA 49

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)

777-200

Data Sources(1)

Quick Facts

Airframes1 applicable
AlternatesNone recorded
ClassExpendable
CriticalityUnknown
CategoryUnknown

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