FAA Advisory Circular 43.13-1B
Acceptable Methods, Techniques, and Practices
Aircraft Inspection and Repair
AC 43.13-1B | 5. Nondestructive Inspection (NDI) | 4. Magnetic Particle Inspection | 5-51. Demagnetization and Postexamination Cleaning
AC 43.13-1B
9/8/98
(2) When parts or materials have been
examined using water suspension methods,
completely remove the water by any suitable
means, such as an air blast, to ensure that the
parts are dried immediately after cleaning.
Thoroughly rinse the part with a detergent-
base cleaner until all magnetic particles are
removed. Then rinse in a solution of water
and rust inhibitor.
(3) For cadmium-plated parts an air-
water vapor blast may be used to remove any
remaining magnetic particle residue.
(4) After final cleaning and drying, use
temporary protective coatings, when necessary,
to prevent corrosion.
(5) After magnetic particle examination
has been completed, restore any removed fin-
ishes according to the manufacturer’s repair
manual.
NOTE: Visible penetrant is often
used interchangeably by NDI person-
nel with fluorescent penetrant. How-
ever, the chemical within most com-
mon red dye penetrants will neutralize
the fluorescence of the chemicals used
in that method. Therefore, a thorough
cleaning of all magnetic particles is
mandatory.
5-52.5-59. [RESERVED.]
Page 5-28
Par 5-51