FAA AD 2014-07-51
Agusta Westland Helicopter
AB139 , AW139
Main Rotor Scissors Spherical Bearing
遊び(がた)点検
P/N 3G6230V00654
参照
http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAD.nsf/0/4b3e3115cea7d40f86257d2b004d8c2a/$FILE/2014-07-51.pdf