is control of the airplane's flight path to a target.    用于自動駕駛操作的對飛機飛往目標(biāo)地的航徑控制。例

Examples are control of heading, altitude, and vertical 如航向，高度，和垂直速度的控制。

speed.

OUTER MARKER, A marker beacon located at or near       遠指點標(biāo)，

the glide slope intercept of an ILS approach. The OM is  位于或靠近儀表著陸系統(tǒng)下滑道截獲點的一個指點信

normally located four to seven miles from the runway   標(biāo)臺。它通常位于跑道中心線延長線上距離跑道頭4至7

threshold on the extended centerline of the runway.    海里。

OUTFLOW VALVE, A valve in the fuselage for             外流活門，

controlling the airflow from the fuselage to ambient for 機身內(nèi)用以控制從機身流向外界大氣的氣流以進行增

pressurization control.                                壓控制的活門。

OUTPUT, An information signal going out of a system or 輸出，

a part of a system.                                      從一個系統(tǒng)或系統(tǒng)的一部分出來的信息信號。

OUTSIDE AIR TEMPERATURE (OAT), Ambient, or free        外界大氣溫度（OAT），

air static temperature.                                  外界環(huán)境溫度或靜止大氣溫度。

OVERHAUL, To return an aircraft or one of its          翻修，

components to a like-new or just manufactured            將飛機或飛機部件修整到近似全新或制造完成時的狀

condition.                                             態(tài)。

OVERRIDE, Operation of a component by a method         超控，

different from normal operation.                         用不同于正常操作的方法來操作部件。

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英漢對照民用航空詞典                                     BOEING

 P

PACK VALVE, A valve for supplying air and controlling 空調(diào)組件活門，

air flow from the pneumatic manifold to the air         由氣源支管向空調(diào)系統(tǒng)供氣并控制該氣流的活門。