BLUF: Several TM work packages are being corrected to allow limited application of Cor-Ban 27L corrosion preventive compound on the stabilator.
Mechanics, several UH-60 stabilator work packages (WPs) are being updated to permit the use of corrosion preventive compound, Cor-Ban 27L, NSN 6850-01-469-7645, as the primary coating on the shank
portion only of the right and left stabilator attachment bolts. See the TM references below:
|1-1520-237-23&P (Mar 22)
|1-1520-246-23&P (Jun 21)
|1-1520-280-23&P (May 22)
Currently, TM 1-1520-280-23&P instructs maintainers to use sealing compound, CA 1000, NSN 8030-01-450-0381, but it’s only authorized as an alternative coating for installation of the right and left bolts.
TM 1-1520-237-23&P and TM 1-1520-246-23&P currently tell maintainers to use antiseize compound, MIL-T-83483, NSN 8030-00-087-8630. Both TMs will be changed to make Cor-Ban 27L the primary coating and sealing compound. CA 1000 will remain an authorized alternative coating.
Note that Cor-Ban 27L or CA 1000 may also be applied to the exposed threads on the left and right bolt after the nut is torqued and cotter pin is installed.
This information will appear in the next update of the TMs identified in the table above.