Bell has received field reports of cabin interior protective pads held in position with VELCRO® that disbond from the cabin structure. This is more likely to occur to those aircraft located in a hot and humid environment. To address this condition, Bell engineering has developed new interior protective pads, adding snaps to the interface to cabin that positively secures them in position rather than the use of VELCRO®. Applicability of this bulletin to any spare part shall be determined prior to its installation on an affected helicopter.

see TB_505-18-12