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PIPER PA32R-301T; CRACKED FUSELAGE SKIN; ATA 5330

机译:派珀PA32R-301T;龟裂的皮肤; ATA 5330

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A technician describes the following defect: "(This aircraft's) upper Comm/Nav antenna doubler and skin cracked from the forward seam along both antenna mount nut-plate lines. The cracks are approximately six inches long with additional cracking radiating out from the forward nut-plates to the forward doubler mounting rivets. The antenna doubler (P/N 99813-004) is cracked completely through on the left side and 90 percent through on the right side." "Damage appears to have been caused by prolonged oil-canning of the upper skin panel (P/N 69904-000) from aerodynamic loads against the antenna during flight. To prevent reoccurrence, repair with a flush patch per 43.13-1B, section 4. However, bend a M inch lip on the left, right, and aft edges of the backing patch to increase stiffness and reduce the oil-canning effect. Jog the front edge of the backing patch and tie into the forward skin seam (and rib), and extend the left, right, and aft edges 4 inches past the removed damaged area. An alternate repair would be to replace the entire affected skin section and remanufacture the antenna doubler to tie into the forward and aft ribs to stiffen the entire area." Part Total Time: 1,520.5 hours. Improper antenna mounting is all too common.
机译:技术人员描述了以下缺陷:“(该飞机的)上部Comm / Nav天线倍增器,并且沿着两条天线安装螺母板线从前缝处裂开了皮肤。裂纹大约长6英寸,并且从前螺母放射出了额外的裂纹。到前置倍增器安装铆钉的板上。天线倍增器(P / N 99813-004)在左侧完全破裂,在右侧完全破裂90%。” “损坏似乎是由于在飞行过程中天线受到气动载荷而导致上皮面板(P / N 69904-000)长时间加油导致的。为防止再次发生,请按照43.13-1B第4节的要求用冲洗贴片进行维修。 。但是,弯曲衬板左,右和后边缘的M英寸嘴唇以增加刚度并降低涂油效果。轻推衬板的前边缘并绑入前皮肤接缝(和肋骨) ),然后将左,右和后边缘延伸到移除的受损区域之外4英寸,另一种修复方法是更换整个受影响的皮肤区域,并重新制造天线倍增器,使其绑在前肋和后肋上,以加固整个区域。”零件总时间:1,520.5小时。天线安装不当太普遍了。

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    《Light Plane Maintenance》 |2015年第3期|3-3|共1页
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