Corrosion Prevention and Control Programs

Question 1

Corrosion Level 1

Answer 1

damage occurring between successive inspections that is local and can be
reworked within limits

Question 2

Corrosion Level 2

Answer 2

damage occurring between successive inspections that requires rework that
then exceeds allowable limits

Question 3

Corrosion Level 3

Answer 3

damage found during the first or subsequent inspections which is determined
to be a potential airworthiness concern

Question 4

The steps to accomplish the Basic Task in order are:

Answer 4

1
Removal of all systems, equipment, and interior furnishings to allow access to
the area
2
Cleaning of the area
3
Visual inspection of all zones and areas listed (NDI)
4
Removal of all corrosion, damage evaluation, and repair of discrepant
structure as necessary
5
Unblocking holes or gaps that may hinder drainage
6
Application of corrosion protective compounds
7
Re-installation of dry insulation blankets

Question 5

If I find corrosion that exceeds level 1 on subsequent inspections (not
initial), what would I probably have to do?

Answer 5

re-evaluate the CPCP for effectiveness

Question 6

To ensure that current status records are available, the CPCP must contain
provisions which require each job/task card to be retained until one of the
following occur:

Answer 6

Corrosion task repeated

Corrosion task superseded

The job/task card is transferred with the airplane