TCTO kits requiring 4 or less man-hours for incorporation will not be issued within how many days of scheduled aircraft PDM induction dates?

• A. 15 Days
• B. 30 Days
• C. 45 Days
• D. 60 Days

Answer: (C)

In maintenance planning, you set a protective window to keep minor modifications from interfering with a major depot work cycle. When a TCTO kit needs four man-hours or less to install, the rule is not to issue that kit within a specific number of days before the scheduled aircraft PDM induction. That buffer is 45 days. The idea is to prevent small, quick installs from cluttering the PDM workload and complicating scheduling, manpower, and parts flow right as depot maintenance is about to begin. So the 45-day limit is the policy in place to keep planning stable and avoid last-minute changes that could derail the PDM timeline. Other windows like 15, 30, or 60 days don’t match this standard scheduling rule, hence 45 days is the correct threshold.