RUDDER BLADE OVERHAUL

uire filling the blade with inert gas, such as CO2, Nitrogen, or Argon, for hot work to occur. NNSY is removing a large amount of the preservative, but leftover residue will most likely be present.

SEE IMPORTANT ADDITIONAL INSTRUCTIONS BELOW FOR NNSYN-504-19 Rudder Blade Overhaul: Each rudder blade listed in paragraph 1.3.3 and 1.3.4 will potentially have residue of preservative MIL-PRF-16173 Grade 1, which may req