(1) An allowance factor is shown for each repair part prescribed for stockage by organizational maintenance
(2d echelon). A guide quantity factor is shown for each part authorized to be stocked by field
maintenance and supply support activities (ad and 4th echelons), and the number of repair parts
recommended for depot maintenance (5th echelon). This factor is based on the latest mortality data for
500 hours operation per year and is the average quantity required by the various maintenance echelons
to provide maintenance and supply support for 100 items of equipment for IS-day period of anticipated
consumption frequency under average combat conditions.
(2) The quantities of repair parts authorized for stockage are determined using the following mathematical
Quantity of equipment to be supported multiplied by listed allocation factor, divided by 100.
Fractions derived from the use of the above formula will be rounded to whole numbers as follows:
(a) If the result is 1 or more and includes a fraction that is .5 or more, the quantity is rounded to the
next higher number.
Example: If the number of equipments supported is 0SO and the allowance factor for 100
equipments is 5. the following formula would be used: