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The Importance of Regularly Changing Aircraft Starter Generators.

22/06/2023 | Fallon Anawalt

A crucial component of aircraft propulsion systems, starter generators play a vital role in initiating engine start-up and powering various electrical systems during flight. However, many aircraft owners and operators may overlook the significance of regular maintenance, specifically the timely replacement of starter generators. This blog post aims to shed light on the importance of changing out your aircraft starter generators every 500 hours to ensure optimal performance and prevent potential damage.


Failing to replace starter generators at the recommended intervals can have severe consequences. Below are just a few issues that could occur:

  • Hung Start: A starter generator plays a pivotal role in initiating and maintaining the necessary power for engine start-up. Over time, these components can experience wear and tear, leading to decreased efficiency and reliability. When a starter generator begins to degrade, it may struggle to provide the required torque to initiate a prompt engine start. This would be considered a “Hung Start”.
  • Low Amperage Starts: One of the undesirable situations that can occur during start-up is when the engine becomes “bogged down.” This phenomenon refers to a condition where the engine experiences a significant reduction in RPM (rotations per minute) and struggles to reach the desired operational speed.

Over time, wear and tear, as well as environmental factors, can cause internal components to degrade, leading to reduced efficiency and compromised reliability. These degraded parts not only increase strain on the electrical system but also diminish engine starting capability, jeopardizing the safety and performance of your aircraft, especially during critical phases of flight.

Neglecting the timely replacement of starter generators not only compromises the reliability of your aircraft but also poses significant financial risks. When a starter generator fails due to extended use, it can trigger a chain reaction of damage to other interconnected systems, further exacerbating repair costs and downtime. Repairing or replacing a failed starter generator and addressing collateral damages can far exceed the expense of routine maintenance.

By adhering to the recommended 500-hour interval for replacement, you can proactively mitigate the risks of costly repairs, reduce downtime, and prevent bill backs during the overhaul process.

At Turbine Engine Consultants, Inc., we understand the importance of reliable starter generators for safe and efficient aircraft operations. As a trusted provider of aviation components, we offer a wide range of starter generators, including the following part numbers: 23079-000-1, 23079-004, 23079-005, 23079-009, 23079-010, 300SG119Q, 640055-501, 8961052, 23046-007, 200SG114Q, 23046-007M, and 90-389001-3. By adhering to the recommended replacement intervals and investing in quality overhauled starter generators, you can safeguard your aircraft, mitigate potential risks, and minimize long-term maintenance costs.