Case ID
CI-1983-AC143
Status
Critical Failure (Historical)
Domains
Aerospace Engineering; Metrology
Source System
Metric fuel measurement (kilograms per liter)
Target System
Imperial fuel calculation (pounds per gallon)
Translation Operation
Manual unit conversion performed during refueling under partial instrumentation failure.
Failure Mode
Silent unit mismatch
Observable Impact
Aircraft received approximately 50% of required fuel load, resulting in dual engine flameout at cruising altitude.
Root Cause (Preliminary)
Absence of a standardized conversion protocol or digital cross-check between ground refueling procedures and cockpit instrumentation during the metric transition period.
Notes on Uncertainty
Severity reflects safety-critical consequences rather than frequency of occurrence.
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