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The Importance Of Maintenance Equation

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Equation (01) the objective function, minimize the number of crew members in a job squad, number of shifts incorporated to a job duration and the number of job squads in a maintenance group during a job duration, which commence at 〖s 〗^th shift starting time.

Equation (02) states that the minimum amount of maintenance labour provided by 〖g 〗^th maintenance group at 〖n 〗^th shift starting time should be able to cover the maintenance demand of all types of aircraft throughout their tour of duty.

Equation (03) depicts the total number of crew members for every aircraft type , in every time slot , have to satisfy the least amount of supply that will meet the maintenance demands for every aircraft type, in every time slot. It is to be highlighted that the number of crew for each time slot is difficult to be related to number of job squads per work group during a job duration using the defined decision variable u_sgc . The auxilary variableL_sga^n along with Equaitions (02) and (03) are designed to facilitate this transformation. …show more content…
Equation (05) highlights the individual aircraft layover time constraint, while Equation (06) constrains the number of type c job squads in work group g who commence the duties at s^thshift to a reasonable range. Equation (08) regulates minimal and maximum shifts included in a job duration. Equation (09) states minimal and maximum number of personnel included in a job squad. Equations (10), (11) and (12) are the non-negativity constraints.

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