EZAP WORKSHEET 4 05/04/10 Enhanced Zonal Analysis - Interval Determination Based on Hostility of Environment and Likelihood of Accidental Damage (step 8 of figure 1, refer to figure 2) Zone Number: Zone Description:
Likelihood of Accidental Damage Hostility of Environment Enter Number Here L 1 - Passive / 2 - Moderate / 3 - Severe Enter Number Here 1 - Passive / 2 - Moderate / 3 - Severe Ground handling equipment Temperature Foreign object debris (FOD) Vibration Weather effects (hail, rain, etc.)
Chemicals (toilet fluids, de-icing fluid, etc.)
Frequency of maintenance activities Humidity Fluid spillage Contamination Passenger Traffic Other Other Enter the Highest Number Here Enter the Highest Number Here Likelihood of Accidental Damage Interval Determination 2 3 Interval selection is specific to each task identified on worksheet 3А or 3B. For GVI of entire zone, consider overall zone environment and likelihood of damage. For stand-alone GVI or DET, consider environment and likelihood of damage 1 only in respect to the specific item/area defined for inspection.
NOTE: Interval ranges are quoted in the rating table to 2 explain a typical arrangement of values. For a particular application, these must be compatible with the interval framework used in the existing maintenance or inspection program (as detailed in the current MRBR). They may be expressed in terms of usage parameter (for example, flight hours or calendar time) or in terms of letter check.
The inspection frequency should be based on increasing risk Appendix H AC 25-27A of accidental damage and increasing severity of the local Upon completion, enter all task and interval selections onto environment within the zone. In other words, the more ratings identified as moderate and severe should drive the inspection towards the lower end of the interval
Enhanced Zonal Analysis - Task Summary EZAP WORKSHEET 5 05/04/10 Zone Number: Zone Description:
TASK SUMMARY Task Number Access Task Interval Task Description and Applicable Comments/Rationale/Assumptions H-7 Appendix H AC 25-27A