pdf Gfa ad 346 issue 4 Popular
By Tim Shirley Tagged in G103ATwinIIAcro, G103TwinII, TwinAstir, TwinAstirTrainer 1121 downloads
gfa ad 346 issue 4.pdf
ULTRASONIC INSPECTION AND POSSIBLE REPLACEMENT OF THE SPAR SPIGOTS
Applicable to the Twin Astir (including Trainer), Grob G 103 Twin II, Grob G 103 Twin II Acro, all models listed, all Serial Numbers. During overseas fatigue testing a spar spigot failed at about 14000 simulated winch launches. This led to a worldwide inspection program and a significant number of gliders were found to have cracked spigots. In Australia 5 out of 18 gliders were found to be cracked. Issue 4 has been prepared to remove any confusion over the glider types affected and to make it clear that gliders which have had their spigots replaced are not required to undergo further ultrasonic inspections. The maintenance requirements for gliders which still have the original spigots have not changed. Grob Technical Information TM 315-36 refers.
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