FAA AD 2014-12-51AIRBUS Helicopter EC130B4 , T2クラック点検Fenestron - Tailboom Junction frame 部分参照http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/b101820459fb439b86257d2b004d8bd7/$FILE/2014-12-51.pdf