关于MAX独有的两个EGT超限值说明

SR 3-5611381834

在机组操作手册中,有两个独有的超温是维护手册中所没有的。High Power Fuel Cut和Quick Windmill Relight。特做相关说明。

High Power Fuel Cut 指当燃油切断时,发动机推力杆处于或高于爬升推力功率。

Quick Windmill Relight 风车启动,EEC自动选择,并提高EGT的裕度标准。

The High Power Fuel Cut condition is defined as the engine thrust lever being at or above climb thrust power when the fuel switch is cut-off.
Two methods of starting an engine in flight are available: windmill and crossbleed/Air Starting. The only difference between the Quick Windmill Relight (QWRL) and the standard in-flight start procedure is the allowed EGT limit as you have noted in the AFM. The Electronic Engine Control (EEC) provides automatic selection of the start EGT limit and is able to raise the standard in-flight EGT limit when it recognizes a Quick Windmill Relight start attempt.
Different design and certification requirements on LEAP-1B (737 MAX) and CFM56-7B (737NG) engines lead to different EGT limits.

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