Service Bulletins


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Aircraft Service Bulletins for the YAK52: 

YAK Bulletin Description Aircraft Serial Number
2DK Welding of oil tank 780102-790406
9DK Rudder fabric 780102-811212
10DK Engine cooling 780102-800815
18DA Elevator counter weight 780102-822501
28DA Rudder stops 810001-831048
37BD Aileron support 780102-855615
53BD Control stick & brakes 780102-8910115
58BD Throttle cable supports 780102-877715
59R Wing attach brackets 780102-866415
60R Main spar 780102-866415
62DK Aileron screws 856001-866915
66R 8.5mm spar bolts 780102-866515
70BD Rudder mass balance 780102-877615
71BD Oil separator 780102-877615
74BU Elevator stops in cockpit 780102-834015
75BU Aileron support supersedes 37 780102-877503
76BD Throttle cable rod ends 780102-877503
80BD Plate on rear spar 780102-888515
87BD Re-reinforce rear spar, plate + oversize bolts 780102-888915
89BD Plate on main spar at brake rod hole 780102-889115
93BD Elevator, fin, rib 780102-899015
94BD Freeze precautions 780102-889009
95BE Manual changes 780102-889009
97BD Improved seat belts 844701-9010815
98BE Manual changes 844701-9010815
105BE Rudder & trim cable tensions 780102-899815
107BD Carbon steel spar strap 780102-9111215

(Data courtesy of the Kaunas Flying Club Ltd and YAK UK Ltd.)