Maintenance Calculations

The MyFBO Maintenance Tracking Sub System (MTSS) is designed to calculate when maintenance items are next due as well as how many hours or days are remaining until they are due.

The MTSS accomplishes this calculation by having you enter certain variables. The variables are:

1. ______ Date or Time the Item was Last Done
2. ______ The Item Interval Date or Time
3. ______ Aircraft Time Now

Once the variables are known, the next due calculation is performed automatically based on this simple formula:

(Date or Time Item Last Done) + (Item Interval Date or Time) = Item Next Due

For example, if an item was last done at 10 hours tachometer time and is due every 100 hours, using the formula, the next due will be 110 hours.

The MTSS then calculates the number of days or hours remaining until an item is due by subtracting the time on the aircraft now from when the item is next due. The MTSS knows what the hours are now by flights being checked in for Premium and Advanced Edition subscribers and by manual entry for Classic and Standard Edition Users. 

Once the MTSS knows the aircraft hours now, it can calculate the time remaining. The formula is:

(Item Next Due, from first calculation above) � (Now) = Remaining

Using the numbers from the example above, the MTSS knows that the item is next due at 110 hours. If a flight was just checked in with an ending tachometer time of 30, there will be 80 hours remaining until the item is next due.

The MTSS estimates what date an hours based maintenance item may be next due by taking into consideration reservations currently on file for the aircraft.

Handling Errors

A note about errors: To fix maintenance errors you will need to know the current hours on the aircraft and the dates and hours the maintenance items were last done. In other words, have the maintenance records in front of you before trying to fix an error or before contacting MyFBO Support.

If there are errors in the calculation the answer is usually simple, it just takes some time to locate the issue. Common reasons for errors include:

1. Meter reading typos are very common on check-in, particularly when the front desk is busy and numerous flights are being checked in.
2. Maintenance items were initially set up with the wrong numbers; either the interval or last done times are incorrect.
3. It is common for a meter change out to cause errors if a maintenance ticket is not created for the change out, or is created incorrectly. Either the aircraft base data is incorrect (Tach or Hobbs Hours Prior) or the maintenance items last done information needs to be updated.
4. Errors on maintenance tickets, or maintenance performed without a maintenance ticket being created.

To fix the errors, ensure you have the correct variables:

1. ______ Date or Time the Item was Last Done
2. ______ The Item Interval Date or Time
3. ______ Aircraft Time Now

If the meter was changed you will also need the total hours on the aircraft for items 1 through 3 above.

02/18/10 cli