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AVIATION GLOSSARY

Understand the term. See where it applies. Keep learning.

Start with a clear definition, then connect the term to aircraft, ATA chapters, technical resources, videos, discussions and real maintenance lessons.

103 published terms17 subject groups73 connected definitions
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Glossary explanations support understanding. Approved manuals, engineering instructions and company procedures remain the authority for maintenance action.

TERMS

9 definitions found

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Electrical & AvionicsIntermediate

EWIS

Electrical Wiring Interconnection System, EWIS

Electrical Wiring Interconnection System: the aircraft wiring, connectors, splices, supports and related installation used to distribute electrical power and signals.

2 ATA1 learning links
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Electrical & AvionicsBeginner

Circuit breaker

CB, electrical circuit breaker

A resettable protective device that interrupts an electrical circuit when current exceeds its designed condition.

1 ATA1 learning links
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DocumentationIntermediate

WDM

WDM, Wiring Diagram Manual

Wiring Diagram Manual: controlled electrical interconnection and wiring information for an aircraft configuration.

1 ATA1 learning links
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Electrical & AvionicsIntermediate

Bonding and grounding

aircraft grounding, electrical bonding

Electrical connections that control voltage differences, provide return paths and protect against static, fault and lightning effects.

2 ATA1 learning links
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Electrical & AvionicsIntermediate

Bus tie

bus-tie contactor, electrical bus tie

A controlled electrical connection that allows power transfer between normally separate electrical buses.

1 ATA1 learning links
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Electrical & AvionicsIntermediate

IDG

IDG, Integrated Drive Generator

Integrated Drive Generator: an engine-driven unit that combines constant-speed drive and electrical generation functions.

1 ATA2 learning links
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Aircraft SystemsIntermediate

RAT

Ram Air Turbine, RAT

Ram Air Turbine: a deployable turbine that uses airflow to provide emergency hydraulic or electrical power.

2 ATA1 learning links
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Electrical & AvionicsIntermediate

Static inverter

DC-to-AC inverter

Solid-state equipment that converts direct current into alternating current.

1 ATA1 learning links
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Electrical & AvionicsIntermediate

TRU

Transformer Rectifier Unit, TRU

Transformer Rectifier Unit: equipment that converts alternating current to direct current for aircraft electrical systems.

1 ATA1 learning links
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