Repairs and overhaul procedures are scheduled and implemented with a surprisingly low frequency. Repair and overhaul procedures are implemented wherein conventional noise suppression exhaust sound attenuation systems receive structural and functional enhancements for promoting longevity of efficient system operations. Degradation deficiencies of conventional configurations of sound attenuation systems for exhaust augmenters and deflector panels are avoided or prevented so that insulation re-packing rates may be minimized. Apparatus and associated methodology establish and implement maintenance protocols for installing specially-designed kits in existing sound attenuation systems. Proper installation inherently assures that maximum quantities of basalt-based insulation are reliably and efficiently packed into existing augmenters and deflector panels so that structural damage thereto under the inevitable influence of intense thermal heat transfers and vibratory loading may be reliably prevented or delayed until scheduled maintenance operations are scheduled. A plurality of synergies among acoustical components including acoustical pillows, acoustical blankets, batten plate assemblies, retaining wire mesh, and compressed basalt packing significantly reduce the frequency of prerequisite maintenance cycles.

 
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