Explanation of Format.

TM 9-4931-363-14&P

preparation time, fault isolation/diagnostic time, and

c. Column 3. Maintenance Functions. Column 3, lists

quality assurance/quality control time in addition to the

the twelve maintenance functions defined in C-2 above.

time required to perform specific maintenance functions

Each maintenance function required for an item shall be

identified for the tasks authorized in the maintenance

specified by the symbol among those listed in d b e l o w

allocation chart. This time may be the established time

which indicates the level responsible for the required

s t a n d a r d developed through maintenance engineering

maintenance. Under this symbol there shall be listed an

analysis, or can be derived from the calculation of a

appropriate work measurement time value determined as

s t a t i s t i c a l l y weighted time estimate incorporating the

indicated in e below.

o p t i m i s t i c (a), most likely (m), and pessimistic (b)

estimated for the work to be accomplished using the

d. Use of Symbols. The following symbols will be used:

formula:

Operator/crew

Organizational

Direct support (intermediate)

General support

Depot

This time will be expressed in man-hours and carried to one

decimal place (tenths of hours).

e. Work Measurement Time. The active repair time

required to perform the maintenance function will be

included directly below the symbol identifying the category

f. Column 4. Tools and Equipment. This column will

of maintenance. The manpower figures will be developed

be used to specify, by code, those tools and test equipment

under conditions (real or simulated) corresponding to those

required to perform the designated function. A table of

that would be considered normal for TOE units operating

tool, test, and support equipment required by the level to

in the field. The skill levels used to obtain the measurement

perform the maintenance functions is contained in section

times will approximate those found in typical TOE units.

III.

Active repair time specified is the average aggregate time to

r e s t o r e an item (subassembly, assembly, component,

g. Column 5. Remarks. A table of remarks is contained

module, end item, or system) to a serviceable condition

under typical field operating conditions. This time includes

in section IV.

C-2