What is the purpose of Sheet 5 in the Enhanced Zonal Analysis?

Sheet 5 is used to list all tasks and intervals selected as a result of the EZAP analysis.

According to Sheet 3A, what factors are considered when determining inspection levels for zones with dedicated ZIP?

Zone size, density, and the potential impact of fire are considered when determining inspection levels.

In the context of Enhanced Zonal Analysis, what should be noted in the comments section of Sheet 1 regarding wiring?

Significant wire-related items, such as wire bundles routed near high-temperature anti-ice ducting, should be noted to provide the analyst with a clear understanding of what's in the zone and how it could potentially affect wiring.

According to Sheet 3B, what is the minimum outcome of the analysis for programs without a dedicated ZIP?

The minimum outcome will always be a GVI of all wiring in any zone where the presence of combustible materials is possible and/or wiring is located in close proximity to both primary and backup hydraulic or mechanical flight controls.

According to the Assessment of Zone Attributes flowchart, what action is taken if a zone does not contain wiring?

If the zone does not contain wiring, no further action is required.

According to Sheet 4, what should be entered onto Sheet 5 upon completion of the interval determination?

All task and interval selections should be entered onto Sheet 5, Task Summary.

According to the Assessment of Zone Attributes flowchart, what is the initial step after completing Steps 1 and 2 on Sheet 1?

The initial step is to determine if the zone contains wiring.

According to Sheet 4, what factors are considered when determining inspection intervals?

The hostility of the environment and the likelihood of accidental damage are considered when determining inspection intervals.

According to Sheet 3A, what is the purpose of the flowchart regarding Zonal GVI interval for wiring?

The flowchart determines if the Zonal GVI interval for the wiring is the same as for the rest of the zone, and if not, whether Standalone GVI or DVI is required.

What is the purpose of the EZAP worksheets according to AMC 20-21?

The EZAP worksheets are provided as examples to assist in the implementation of the EZAP logic explained in AMC 20-21. They can be adjusted to suit specific applications.

According to the Assessment of Zone Attributes flowchart, what is assessed if a zone contains wiring?

If the zone contains wiring, it is assessed whether combustible materials are present in the zone.

What is the first step in the Enhanced Zonal Analysis Procedure according to Sheet 1?

The first step is to describe the zone, including its location, access, and boundaries.

What is the second step in the Enhanced Zonal Analysis Procedure according to Sheet 1?

The second step is to list the content of the zone, including installed equipment, wiring, plumbing, components, etc.

According to the Assessment of Zone Attributes flowchart, what happens if wiring is close to both primary and back-up flight controls?

If wiring is close to both primary and back-up hydraulic, mechanical, or electrical flight controls, the analysis proceeds to wiring inspection task determination on Sheet 3.

Appendix B to AMC 20-21 Examples of Typical EZAP Worksheets

Q: What should analysts ensure when using interval ranges in the rating table?

Analysts must ensure that the interval ranges are compatible with the interval framework used in the existing maintenance or inspection program. They can be expressed in terms of usage parameters or letter checks.

Navigate / EASA

Ask question Discover more Add to collection

ED Decision 2008/007/R

The following worksheets are provided as an example to assist implementation of the EZAP logic explained in this AMC. These may be adjusted by the analyst to suit specific applications.

1. Details of Zone.

2. Assessment of Zone Attributes.

3A. Inspection Level Determination based on Rating Tables (for use where a dedicated ZIP exists).

3B. Inspection Level Determination based on Rating Tables (for use where no dedicated ZIP exists).

4. Interval Determination based on Rating Tables.

5. Task Summary.

In particular, the interval ranges quoted in the rating table on Sheet 4 are solely to 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 programme. They may be expressed in terms of usage parameter (e.g. flight hours or calendar time) or in terms of letter check (as in the example).