MERC developed new Rainbow Fitting (RBF) installation tooling and two separate installation procedures. One set of procedures were created for the removal, replacement, and milling of legacy rainbow fittings using the new tooling set. The second set of procedures were developed for removal, replacement, and milling of the redesigned rainbow fittings redesigned attach angles and redesigned straps. Included in the second set of procedures are instructions on the modification of the skin panel to accommodate redesigned rainbow fitting.
MERC delivered prototype tooling for pulling RBFs from a wing after fastener removal, an installation template for installing new RBFs correctly, and a routing fixture for machining the RBF nodes after installation. All prototype tooling was approved by the C-130 SPO.