Thursday, July 5, 2012

Production Planning - Man hrs Planning

 Production Planning for maintenance organisation. For AMO production means work completion of work such as inspection,modification,repair, servicing etc. Man hrs planning is an important factor of production planning.
145. A.47 Production planning
(a) The organisation shall have a system appropriate to the amount and complexity of work to plan the availability of all necessary personnel, tools, equipment, material, maintenance  data and facilities in order to ensure the safe completion of the maintenance work.
(b) The planning of maintenance tasks, and the organising of shifts, shall take into account human performance limitations.
AMC 145.A.47(a) Production planning
1. Depending on the amount and complexity of work generally performed by the AMO, the planning system may range from a very simple procedure to a complex organisational set-up including a dedicated planning function in support of the production function.complementary elements:
- scheduling the maintenance work ahead, to ensure that it will not adversely interfere with other work as regards the availability of all necessary personnel, tools, equipment, material, maintenance data and facilities.- during maintenance work, organising maintenance teams and shifts and provide all necessary support to ensure the completion of maintenance without undue time pressure.
3. When establishing the production planning procedure, consideration should be given to the following:
− man-hours estimation,
− man-hours availability,
− preparation of work,
− hangar availability,
− scheduling of safety-critical tasks during periods when staff are likely to be most alert.
AMC145.A.47 (b) Production planning
Limitations of human performance, in the context of planning safety related tasks, refers to the upper and lower limits, and variations, of certain aspects of human performance (Circadian rhythm / 24 hours body cycle) which personnel should be aware of when planning work and shifts.
         145.A. 30 (d) The organisation shall have a maintenance man-hour plan showing that the organisation has sufficient staff to plan, perform, supervise, inspect and quality  monitor the organisation in accordance with the approval. In addition the organisation shall have a procedure to reassess work intended to be carried out when actual staff availability is less than the planned staffing level for any particular work shift or period.
      AMC 145.A.30 (d) 1. Has sufficient staff means that the organisation employs or contracts such staff of which at least half the staff that perform maintenance in each workshop, hangar or flight line on any shift should be employed to ensure organisational stability. Contract staff, being part time or full time should be made aware that when working for the organisation they are subjected to compliance with the organisation’s procedures specified in the maintenance organisation exposition relevant to their duties. 
 #employed means the person is directly employed as an individual by the maintenance organisation approved under CAR -145
 # contracted means the person is employed by another organisation and contracted by that organisation to the maintenance organisation approved under CAR-145.
2. The maintenance man-hour plan should take into account any maintenance carried out on aircraft / aircraft components from outside the country and should also take into account all work carried out outside the scope of the CAR-145 approval.
3. The maintenance man-hour plan should relate to the anticipated maintenance work load except that when the organisation cannot predict such workload, due to the short term nature of its contracts, then such plan should be based upon the minimum maintenance workload needed for commercial viability. Maintenance work load includes all necessary work such as, but not limited to, planning, maintenance record checks, production of worksheets/cards in paper or electronic form, accomplishment of maintenance, inspection and the completion of maintenance records.
4. In the case of aircraft base maintenance, the maintenance man-hour plan should relate to the aircraft hangar visit plan as specified in AMC 145.A.25(a)
6. The quality monitoring compliance function man-hours should be sufficient to meet the requirement of 145.A.65(c) which means taking into account AMC 145.A.65(c). Where quality monitoring staff perform other functions, the time allocated to such functions needs to be taken into account in determining quality monitoring staff numbers.
7. The maintenance man-hour plan should be reviewed at least every 3 months and updated when necessary.
8. Significant deviation from the maintenance man-hour plan should be reported through the departmental manager to the quality manager and the AM for review. Significant deviation means more than a 25% shortfall in available man-hours during a calendar month for any one of the functions specified in 145.A.30(d).

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