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The aircraft suffered dual-engine failure due to high water intake during a hail storm, executed a forced landing on a state highway, and crashed into buildings, killing 63 aboard the aircraft as well as 9 on the ground. April 27, 1976 37 39 51 American Airlines Flight 625: St. Thomas: U.S. Virgin Islands: Boeing 727-100
Minimum safe altitude warning (MSAW) is an automated warning system for air traffic controllers (ATCO). It is a ground-based safety net intended to warn the controller about increased risk of controlled flight into terrain accidents by generating, in a timely manner, an alert of aircraft proximity to terrain or obstacles.
When operation of an aircraft under VFR is not safe, because the visual cues outside the aircraft are obscured by weather, instrument flight rules must be used instead. IFR permits an aircraft to operate in instrument meteorological conditions (IMC), which is essentially any weather condition less than VMC but in which aircraft can still ...
It also determined special aspects of aircraft performance such as stall speed (e.g., for single engine airplanes – not more than 61 knots), rate of climb (not less than 300 ft/min), take-off speed (not less than 1.2 x V S1), and weight of each pilot and passenger (170 lb for airplanes in the normal and commuter categories, and 190 lb for ...
minimum safe altitude / minimum sector altitude MSD Minimum Stabilization Distance MSDS Material Safety Data Sheet MSG Message: MSL mean sea level: MSLW Max. Structural Landing Weight MSP Modes S-Specific Protocol MSSS Mode S-Specific Services MSTOW Max. Structural Take-off Weight MSZFW Max. Structural Zero Fuel Weight MTBF Mean time between ...
Above the TA, the aircraft altimeter pressure setting is changed to the standard pressure setting of 1013 hectopascals (equivalent to millibars) or 29.92 inches of mercury, with the aircraft altitude will be stated as a flight level instead of altitude. In the United States and Canada, the transition altitude is 18,000 ft (5,500 m). [5]
In the US, there are specific VFR cruising altitudes, based on the aircraft's course, to assist pilots in separating their aircraft while operating under visual flight above 3,000 ft above the surface (AGL) but below 18,000 ft Mean Sea Level (MSL). Unofficially, most pilots use these rules at all levels of cruise flight.
The minimum altitude at the 2.9 mile DME was 2,900 feet above mean sea level; after reaching the DME, Flight 736 was authorized only to descend to the minimum descent altitude (MDA) of 2,543 feet. [1]: 7 However, the aircraft continued to descend below the MDA until it contacted the trees at an altitude 462 feet below the MDA.