FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 5. Nondestructive Inspection (NDI) | 5. Penetrant Inspection | 5-62. Basic Steps to Perform Penetration Inspection
AC 43.13-1B
9/8/98
FIGURE 5-13. Penetrant and developer action.
TABLE 5-3. Classification of penetrant inspection materials covered by MIL-I-25135E.
PENETRANT SYSTEMS
DEVELOPERS
SOLVENT REMOVERS
Type I
Type II
Type III
Fluorescent Dye
Visible Dye
Visible and Fluorescent
Dye
(dual mode)
Form a
Form b
Form c
Form d
Form e
Method A
Method B
Method C
Method D
Water Washable
Post emulsifiable,
Lipophilic
Solvent Removable
Post Emulsifiable,
Hydrophilic
Sensitivity Level 1/2
Sensitivity Level 1
Sensitivity Level 2
Sensitivity Level 3
Sensitivity Level 4
Ultralow
Low
Medium
High
Ultrahigh
Dry Powder
Water Soluble
Water Suspendible
Nonaqueous
Specific Application
Class (1)
Class (2)
Class (3)
Halogenated
(chlorinated)
Nonhalogenated
(nonchlorinated)
Specific Application
Page 5-30
Par 5-62