Alternator

An alternator is an engine-driven electrical generator that produces alternating current, which is converted to direct current to power the aircraft's electrical systems and charge the battery. An in-flight alternator failure is typically indicated by a continuous battery discharge shown as a left deflection on a left-zero ammeter, or a zero reading on a centre-zero ammeter during normal flight.

Key Points

• •The alternator provides primary electrical power during engine operation.
• •Failure is indicated by a continuous battery discharge on a left-zero ammeter, or a zero reading on a centre-zero ammeter during normal flight.
• •Loss of the alternator requires the pilot to rely entirely on battery reserves.

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