This mode is used when full instrument landing system is available.

这种方式是在全仪表着陆系统正常时才使用。

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The plane has UHF and VHF radios plus an instrument landing system.

飞机配备了UHF 和VHF无线电以及仪表降落系统。

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Ultimately, the company added a parachute as an emergency landing system.

最终，这家公司添加了一个降落伞作为紧急着陆系统。

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Neil Armstrong took manual control of the guidance system and, with just 20 seconds of fuel remaining, coasted to a landing.

VOA: standard.2009.07.16

Upon descent, alarms went off telling the astronauts that the automatic guidance system was steering the lander toward a boulder-strewn crater instead of a relatively flat landing site called the Sea of Tranquility.

VOA: standard.2009.07.16

He invented the radio direction finder, autopilot and the first fully automatic aircraft landing system.

FORBES: The Bill Lear I Knew

The airport has invested in new hangars and enhanced its instrument landing system.

BBC: Cambridge Airport sets out plans for future

It is operated from a computer workstation, rather than by traditional aircraft controls, and has an automatic landing system.

ECONOMIST: Unmanned aircraft