What is the maximum number of engine starts allowed per hour?

What is the maximum number of engine starts allowed per hour?

• A. 2 starts per hour
• B. 5 starts per hour
• C. 4 starts per hour
• D. 3 starts per hour

Answer: (D)

Engine starts stress the engine and its support systems, so operations place a limit on how many starts you can perform in a short period. The maximum allowed within a one-hour window is three starts. This cap helps prevent excessive wear and reduces the risk of hot starts or other damage from rapid cycling, giving the engine a chance to cool between attempts. If you need more starts, you must wait for the next hour or follow any operator-specific procedures. Limits below the maximum are permissible, but they don’t reflect the maximum allowed; exceeding the limit would violate the rule.

Engine starts stress the engine and its support systems, so operations place a limit on how many starts you can perform in a short period. The maximum allowed within a one-hour window is three starts. This cap helps prevent excessive wear and reduces the risk of hot starts or other damage from rapid cycling, giving the engine a chance to cool between attempts. If you need more starts, you must wait for the next hour or follow any operator-specific procedures. Limits below the maximum are permissible, but they don’t reflect the maximum allowed; exceeding the limit would violate the rule.