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Falcon 900B, Ex and EASy series APU / Broken Exhaust Mount Bushing

January 2014

There is phenolic bushing, P/N FGFB715001004A2, IPC 49-81-10-10 item 300, in the top mount of the APU exhaust (see Figure 1) that is commonly broken or missing (see Figures 2 &3) and overlooked during inspection. Catching and replacing this early prevents damage to both the bracket and the exhaust stack mount.  

phenolic bushing schematic location
Figure 1: Phenolic bushing shematic location
phenolic bushing
Figure 2: Phenolic Bushing Intact
phenolic bushing
Figure 3: Phenolic Bushing Broken