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Setting Compliance Intervals (Maintenance Tracking)

This article explains the different types of intervals, how they relate to aircraft meter readings, and how to configure them inside each Compliance Item.

Compliance intervals are at the heart of how EBIS tracks recurring maintenance events and life-limited components. By configuring interval types properly and linking them to meter readings or calendar dates, EBIS can accurately calculate due dates and remaining time for each Compliance Item.

This article explains the different types of intervals, how they relate to aircraft meter readings, and how to configure them inside each Compliance Item.

 

Understanding Compliance Interval Types

Each Compliance Item can use one or more of the following interval types:

  • Calendar-based
    • Measured in months, days, or a specific next due date
  • Usage-based
    • Measured in hours, cycles, or landings, and calculated based on linked meter readings

 

Understanding How Compliance Intervals Interact with Meter Readings

Usage-based intervals (hours, cycles, landings) are calculated using the aircraft's Meter Readings. EBIS determines how much time has passed based on the meter reading values at the Start/Install Date and the current reading.

Example:

  • A Compliance Item is due every 100 hours
  • Start/Install Date meter reading = 1,200
  • Current reading = 1,270
  • EBIS calculates 70 hours have passed, so 30 hours remain until due

The Meter Reading field in the interval configuration allows you to choose which reading type the interval should be based on (e.g., total time, engine time, landings).

📘 The Start/Install Date must be linked to an existing Meter Reading on that date. When setting or editing this date, EBIS pulls the aircraft’s meter values from the reading associated with that date. This linkage is required in order for calendar and usage-based interval tracking to calculate properly.

If no reading exists on the selected Start/Install Date, you will need to enter one manually from the compliance item screen or update the aircraft’s readings accordingly.

 

Setting Up Intervals for a Compliance Item

To configure intervals on a Compliance Item:

  1. Go to the Aircraft Module > Select an Aircraft.
  2. Click the Compliance tab > Select or create a Compliance Item.
  3. Under the interval configuration sections:
    1. Calendar Configuration: Set by months, days, or a specific date
    2. Hours Configuration: Set the hourly interval and select the meter to track against
    3. Cycles and Landings: Enter the value and associate it with a meter
  4. Enter the values and click Save.

Each interval section also includes:

  • Offset Fields (e.g., Days, Additional Hours, Cycles, Landings at Install) – to subtract time from the calculated next due date
  • Total Prior Values – for recordkeeping (not used in due date calculation)

💡 The system will also show calculated due dates, hours remaining, and days remaining on the item view screen once intervals are configured.

 

Setting a Specific Next Due Date on a Compliance Item

If you need to override interval logic and set a manual due date:

  1. On the Compliance Item, go to the Date Configuration section
  2. In the Calendar dropdown, select Specific Date
  3. Enter the desired Next Due Date
  4. Save the item

This bypasses automatic interval calculations and forces the system to use a fixed due date instead.

⚠️ If you switch to Specific Date, usage-based interval tracking will be ignored for that item.

 

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Keywords: Compliance Intervals, Maintenance Due Logic, EBIS Meter Readings, Aircraft Usage Tracking Audience: Maintenance Coordinators, Admins, Implementation Teams Article Type: Configuration Guide / How-To