The Service Schedule: keeping intervals current together

The Service Schedule page — in the Record group of your aircraft's sidebar — is a different lens on the same recurring items you see in the Maintenance tab. Where the Maintenance tab asks "what's due?", the Service Schedule asks "are the intervals themselves right?" It's the place where you and your mechanic keep the aircraft's recurring service intervals current, together.

Co-authored, owner-canonical

You and your linked mechanic both work from this page, but the roles differ. A linked mechanic can propose a change to a discretionary interval — say, adjusting an oil-change cadence based on how the engine is actually being flown. You accept or decline the proposal. Your choice is what sticks, because under §91.417 the owner is the records custodian: the aircraft's record is yours, and TachMinder treats your decision as canonical.

1. 1

   Mechanic proposes

   Your linked mechanic suggests a change to a discretionary interval, from their side of the shared workspace.
2. 2

   You review

   The proposal shows up for your review — what would change, and to what.
3. 3

   Accept or decline

   Accept and the interval updates; decline and it stays as it was. Either way, the schedule reflects a decision you made, not one made for you.

What you can't adjust — and why

Regulatory intervals are not owner-adjustable. Items whose timing comes from regulation rather than preference stay fixed; How next-due dates work covers which intervals can be overridden and which can't.

Every interval knows its clock

Hour-based intervals carry an hours basis — tach or Hobbs — and are labeled accordingly throughout the page. An interval tracked on tach time and one tracked on Hobbs time will count down differently on the same airplane, so the label matters; see Tach time vs. Hobbs time if the distinction is new to you.

For the day-to-day view of what's actually coming due against these intervals, head back to the Maintenance tab — Managing maintenance and squawks covers that side.