Under standard five-day work weeks, what is the interval for a 500-hour inspection?

Under standard five-day work weeks, what is the interval for a 500-hour inspection?

• A. Monthly
• B. Biweekly
• C. Weekly
• D. Quarterly

Answer: (D)

Maintenance intervals based on operating hours can be translated into calendar time by using the weekly amount of work hours. If the five-day work week is 40 hours, then 500 hours accumulate in 500 ÷ 40 = 12.5 weeks. That’s a little over three months, which corresponds to a quarterly schedule. So, the 500-hour inspection would occur roughly every three months under this standard usage. If actual weekly hours differ, the calendar interval would shift accordingly.

Maintenance intervals based on operating hours can be translated into calendar time by using the weekly amount of work hours. If the five-day work week is 40 hours, then 500 hours accumulate in 500 ÷ 40 = 12.5 weeks. That’s a little over three months, which corresponds to a quarterly schedule. So, the 500-hour inspection would occur roughly every three months under this standard usage. If actual weekly hours differ, the calendar interval would shift accordingly.