permit continued safe operation of airplane. This       偏差。該偏差通常適用于不工作的系統(tǒng)或部件。

generally applies to an inoperative system or

component.

DISPATCH DEVIATIONS PROCEDURES GUIDE                    缺件放飛程序指南，

(DDPG), A Boeing document that combines Minimum           綜合最低設備清單和缺件單，波音公司參考文件旨在建

Equipment List (MEL) and Configuration Deviation List   議某些飛機部件不工作或缺失時，放飛需要的程序。

(CDL) items into one reference book. Gives required

procedures for dispatching aircraft with certain parts

inoperative or missing.

                                       TECHNICAL DICTIONARY                                     45

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英漢對照民用航空詞典                                     BOEING

DISPLACE THRESHOLD, A threshold not located at        移動跑道人口，

the extremity of a runway.                              不在跑道最頂端的跑道頭。

DISTANCE MEASURING EQUIPMENT (DME), A radio           測距機（DME），

navigational aid for determining the distance from a    飛機上的一種無線電導航設備，通過測量電波往返飛

selected DME ground station by measuring the time of  機和預選地面（DME）臺之間所需要的時間來確定兩者間

transmission to and from it.                          的距離。

DIVERSION, The process of flying to an airport not in 改航，

the flight plan.                                        飛往不在飛行計劃中的機場的過程。

DMA, SEE - DIRECT MEMORY ADDRESSING                   直接存儲器尋址，

                                                          見 Direct Memory Addressing．

DME FIX, A geographical position determined by        測距儀定位點，

reference to a navigational aid which provides distance 相對于提供距離和方位的導航臺而決定的地理位置。

and azimuth information. It is defined by a specific  它由以海里為單位的一定距離和以距臺磁度為單位的徑