FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 5. Nondestructive Inspection (NDI) | 2. Visual Inspection | 5-18. Visual Inspection Procedures
9/8/98
AC 43.13-1B
FIGURE 5-1. Typical borescope designs.
experience on corrosion detection on aircraft
structure and engine materials. (Reference:
AC 43-4A, Corrosion Control for Aircraft, for
additional information on corrosion.
of parts, corrosion, and damage. If the con-
figuration or location of the part conceals the
area to be inspected, use visual aids such as a
mirror or borescope.
a. Preliminary Inspection. Perform a
preliminary inspection of the overall general
area for cleanliness, presence of foreign ob-
jects, deformed or missing fasteners, security
b. Corrosion Treatment. Treat any cor-
rosion found during preliminary inspection
after completing a visual inspection of any se-
lected part or area.
Par 5-18
Page 5-11