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In ISA temperature conditions the altimeter will read the height above the airfield/runway in the vicinity of the airfield. SPS/STD - 'Standard Pressure Setting' or just 'Standard' refers to the altimeter being set to the standard pressure of 1013.25 hPa. It is the setting that causes an altimeter to read the aircraft's flight level (FL).
12 November 1996, an Il-76 collided in mid air with a Saudi B747 near New Delhi India, following a level bust by the Il-76.; 12 November 1996, a B737 descended below its assigned holding level in the LHR stack, in IMC, to within 100 feet vertically and between 680 and 820 metres horizontally of an MD-81 at its correct level.
The altimeter setting used is the ISA surface pressure of 1013 hPa or (29.92 inHg). The actual surface pressure may vary from this at different locations and times. Therefore, by using a standard pressure setting, every aircraft has the same altimeter setting, and vertical clearance can be maintained. [1] Scale comparison of some flight level ...
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During that transmission, a trainee controller had also transmitted an incorrect QNH (barometric altimeter setting) that was 9 hPa too high. The approach instructions were not fully heard since the pilot had re-keyed his microphone to acknowledge the new QNH, and likely did not hear the second repeat of the 3,000 ft safe altitude, declaring ...
The NTSB determined that the probable cause of the accident was pilot error, because the captain disregarded the prescribed minimum descent altitude in adverse weather conditions. [55] American Airlines Flight 1572 crashed while attempting to land at Bradley International Airport due to an incorrect altimeter setting, on November 12, 1995. [56]
(The Center Square) – Homeschool groups have concerns about President-elect Donald Trump’s proposed tax credit as Illinois lawmakers look at regulating the practice. Trump, in a video posted ...
In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL [1] or HAGL) is a height measured with respect to the underlying ground surface.This is as opposed to height above mean sea level (AMSL or HAMSL), height above ellipsoid (HAE, as reported by a GPS receiver), or height above average terrain (AAT or HAAT, in broadcast engineering).