The MSG-1 process used decision logic to develop scheduled maintenance. MSG-2 was developed and used for developing scheduled maintenance for 1970’s, MSG-2 was process orientated and for first time introduced ‘condition monitored maintenance’ concept.

This advisory circular (AC) provides guidelines that industry may use to develop and revise the minimum scheduled tasking/interval requirements for derivative or newly type-certificated (TC) aircraft and powerplants for Federal Aviation Administration (FAA) approval.

MSG1颠覆了“以预防性维修为主”的传统维修思想理念，成为第一个采用逻辑决断方法和程序指导制定维修大纲的文件。 MSG2是针对维修方式的分析逻辑。 人们把在波音747项目上获得的经验应用到所有新研制的飞机上，为了做到这一点，更新了判定逻辑，删除了某些特定的747过程信息，剩下的通用文件即为MSG2。 根据MSG2方法制定的维修大纲，主要针对飞机的每类组件（系统、部件或设备）采用“从下往上”的分析方法，其分析结果是为指定的各组件确定适宜的维修方 …

MSG1颠覆了“以预防性维修为主”的传统维修思想理念，成为第一个采用逻辑决断方法和程序指导制定维修大纲的文件。 MSG-1称为维修评审和大纲制定手册，它设定了初始最低计划维修要求。 由维修指导委员会来确定，其目标是用最小的花费来达到安全可靠的目的。 包含了大修和视情项目。 定时 (HT)项目是一种预防性维护方法。 定时的项目对应两类部件，一类是可翻修的部件，另一类是时寿件。 对于可翻修的部件，“定时”要求周期性在其使用时间达到时限前按照. CMM手册 …

MSG-1 was superseded MSG-2 in the early 1970’s and used a logic process which considered failures starting at the component level and moving up, with a focus on the understanding that all aircraft, engines and components, reach a period when they should be discarded or overhauled and returned to a “as new” condition.

It provides background on the development of maintenance steering group recommendations MSG-1, MSG-2, and MSG-3 which introduced reliability-based maintenance using on-condition and condition monitoring processes. MSG-3 expanded the objectives to also restore equipment reliability, collect data for redesign, and accomplish goals at minimum cost.

按照新的咨询通告CAA 的AC-121AA-02R1和FAA的AC121-22A的要求，应将最新MSG逻辑程序应. 用在新飞机的维修大纲制订中。 为此我们将美国航空运输协会ATA《运营人/制造厂 预定维修大纲制订文件—MSG-3》2003.1修改版. 翻译并内部出版，供制订民用航空器的初始预定维修大纲时使用。 通过对它的深入研究，必将进一步推动我国维修理论的发展，提高民用飞机的适航. 管理水平。 在MSG-2颁布10年后，原来参加ATA的航空公司认为，有必要对原来的MSG-2进行修订。 …

MSG1, MSG2 and MSG3 are revisions of maintenance programs that aim to make aircraft maintenance more efficient and cost-effective while maintaining safety. MSG1 used decision logic, MSG2 introduced condition-based maintenance, and MSG3 aims to avoid unnecessary tasks based on component reliability. What are MSG1, MSG2 and MSG3?

The MSG-1 process used decision logic to develop scheduled maintenance. MSG-2 was developed and used for developing scheduled maintenance for 1970’s, MSG-2 was process orientated and for first time introduced ‘condition monitored maintenance’ concept.

2015年8月2日 · MSG就是message1，在LTE系统中，基于竞争的随机接入有4条信令msg1~msg4。 LTE网络有能力提供300Mbit/s的下载速率和75 Mbit/s的上传速率。 在E-UTRA环境下可借助QOS技术实现低于5ms的延迟。 LTE可提供高速移动中的通信需求，支持多播和广播流。 LTE频段扩展度好，支持1.4MHZ至20MHZ的 时分多址 和码分多址频段。 你好！ 这里的MSG就是message1消息1！ 这4条信令是MAC层的，RLC，MAC,PAPC层的信令不像RRC层和NAS层 …