Sunday, May 6, 2012

Human Factor & Shift Change


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, m 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.
(c) When it is required to hand over the continuation or completion of maintenance  tasks for  reasons of a shift or personnel changeover, relevant information shall be adequately communicated between outgoing and incoming personnel.
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:
environmental conditions (access, lighting standards and cleanliness),
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.
AMC145.A.47(c) Production planning
The primary objective of the changeover / handover information is to ensure effective
communication at the point of handing over the continuation or completion of maintenance actions. Effective task and shift handover depends on three basic elements:
The outgoing person’s ability to understand and communicate the important elements of the job or task being passed over to the incoming person.
The incoming person’s ability to understand and assimilate the information being provided by the outgoing person.
A formalised process for exchanging information between outgoing and incoming persons and a planned shift overlap and a place for such exchanges to take place.
         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.

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