878. The positive pressure relief valves are fail safe devices that bleed fuselage pressure overboard if the aft outflow valve fails closed

2485. 在本规范中,飞机指的是型号合格证中规定的机身和相关部件,或飞机制造商提供的可供选择的部件。

2484. 提供飞机导航信息的组件和部件。包括VOR、皮托管、静压孔、ILS、飞行指引仪、罗盘、指示器等。

2483. Apply sealant on the outer surface

2482. 使用过滤器从滑油中除去不需要的物质

2481. 检查地板是否变形

2480. Access to the base is permitted between 9am and 6pm

2479. The vent scoop and pressure relief valve are on an access door in each surge tank

2478. Each system has a receiver which is located in an avionics compartment and which is tuned either automatically from the FMS or manually from the relevant NAV control panel

2477. If the vocabulary, meanings of words, and the types of sentence constructions in a text are controlled, the variation between texts will be minimal

2476. The dictionary also gives a selection of unapproved words, with examples that show how to use alternative words