provides the major portion of engine thrust.

FAN (NO. 2), A device consisting of one or more          風扇（NQ．2），

revolving blades attached to a rotary hub and operated     安裝在由馬達驅動的旋轉輪殼上的一片或多片旋轉槳

by a motor. Fans are usually used to provide cooling or  葉所組成的裝置。通常用來提供冷卻或空氣循環。

air circulation.

FAN AIR, The portion of airflow through a turbofan       風扇氣流，

engine which passes only through the fan.                  在渦輪風扇發動機中，僅僅通過風扇的那部分氣流。

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英漢對照民用航空詞典                                     BOEING

FAN COWL, A covering around the fan section of the    風扇整流罩，

engine that can be opened for access to the             在發動機風扇周圍的可卸蓋殼，打開后可以夠到發動

components on the engine.                             機部件。

FASTENER, A mechanical device such as a bolt, nail,   緊固件，

rivet or screw that is used to tie two objects together. 用來將兩個物體連接起來的機械裝置。如螺栓，釘子，

                                                      鉚釘，或螺釘。

FATIGUE OR FATIGUE FAILURE, The failure of a          疲勞或疲勞斷裂，

material because of bending, flexing or severe vibration 因彎曲或劇烈振動力所造成的材料斷裂。

forces.

FAULT ISOLATION MANUAL (FIM), A manual which          故障隔離手冊 （FIM），

contains procedures for isolating and correcting        內含隔離并排除飛機故障程序的手冊。供航空公司維修

reported airplane faults. Used by airline mechanics.  機械員使用。

FAULT REPORTING MANUAL (FRM), A manual used           故障報告手冊（FRM），

by flight crews to aid in reporting airplane system     機組使用的一本手冊。用以幫助他們報告飛機系統的故

malfunctions.                                         障。

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