Definition
A diagram that maps out a troubleshooting or decision-making process as a sequence of steps and yes/no questions, guiding the technician from a reported problem to its likely cause and corrective action.
Plain English
A step-by-step picture that walks you through a problem, asking simple yes-or-no questions until you find the cause and the fix.
Context Anchor
Seen in aircraft maintenance manuals, troubleshooting guides, and system fault isolation procedures.
Derivation
‘Logic’ comes from the Greek logikē, meaning reasoning. ‘Flow chart’ describes how the reasoning ‘flows’ from one decision to the next. Together it means a chart that shows how reasoning moves step by step toward an answer.
Why Pilots Care
For maintenance technicians, following the chart in order prevents skipped checks and stops guesswork — saving time and reducing the chance of replacing good parts.
Intuition Check
Do not read this as just any helpful chart. A logic flow chart specifically controls the order of decisions and sends you to the next step based on each answer.
Example Sentence 1
When the landing gear failed to retract, the technician opened the logic flow chart in the maintenance manual and worked through each step.
Example Sentence 2
Before replacing any components, follow the logic flow chart to confirm the exact fault location.