波音737飞机CH-A-B-EEC-DATA-NOT-AVAILABLE信息的处置

HNAT737技术问题说明提示单编号撰写校对批准/旧期T1P737-2020-73-004符方洲赵斌曾品/2020.5.7标题CHA(B)EEC DATA NOT AVAILABLE信息的处置一、适用性737NG二、背景描述机队中遇到过，在EEC自检时出现CHA(B)EEC DATA NOT AVAILABLE信息，无法继续自检，也没有明确的处置和放行标准。在和波音明确后，此类情况按短期故障处理，并提供了检查的参考文件。三、解释说明SR和波音做了沟通，波音答复如下：Q2.for CH A EEC DATA NOT AVAILABLE message,if no other maintenance message,howcan we dispatch the plane?and if it is caused by EEC,whether EEC should be replaced beforedispatch?A2.Boeing and CFM recommendation is to continue to apply FIM 73-05 TASK 803 until thesource of the message is determined.EEC is not necessarily assumed to be the problem until thetroubleshooting is completed.Q3.MEL 73-12 is for the short time or long time Airplane power supply to EEC fault message,soif no maintenance message shows,whether the MEL73-12 is applicable for CH A EEC DATA NOTAVA ILABLE message?A3.While an EEC channel data not available condition in and of itself does not meet the definitionof a specific Time Limited Dispatch (TLD)level on the CFM56-7B,the condition should be addressedno later than within a short time dispatch interval.Most importantly,the condition must be addressed insuch time that the normal TLD fault interrogation and correction intervals can be maintained for theengine in question.大意为CHA(B)EEC DATA NOT AVAILABLE信息应参照FM73-O5TASK8O3进行排故，并应在SHORT TIME期限内得到处置.四、小结CHA(B)EEC DATA NOT AVAILABLE信息应参照FM73-O5TASK8O3进行排故，并应在SHORTTIME期限内得到处置.1/1