【事件背景】
最近一个月接到两起LEAP1A发动机管路防火护套损伤的案例,大家对类似损伤的处理流程还不是太清楚,下面我们一起分析下。
【发动机管路及防火护罩简介】
通常,针对管路的识别:一般TUBE指硬管;一般HOSE指软管。
针对LEAP1A的管路,根据其承受的压力以及功能区域可分为4类:
REF.AMM(R104)72-00-00-200-815-A_4.A.(1).13
INSPECT/CHECK | MAX SERVISEABLE LIMITS | REMARKS |
13.Examine the hose assemblies for: | ||
A.Internal blockage: | Not serviceable. | Remove the blockage. |
B.Cuts, tears and chafing on the fire sleeve: | Any amount, if there is no damage to the braid under the fire sleeve and each defect in the fire sleeve is 0.50 in.2 (322.58 mm2) or less. Defects cannot overlap | Replace the fire sleeve. |
C.Leakage: | Not serviceable. | Replace the hose. |
D.Loose and missing tie down strap on the fire sleeve: | Not serviceable. | Repair the fire sleeve. |
E.Nicks and scratches on the B-nut fitting wrenching flats and corners: | Any amount, if you can torque nut to correct torque. | Replace the hose. |
管组件(HOSE)防火护套的割伤、撕裂和擦伤:
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