Aileron buzz is a very rapid oscillation of an aileron, at certain critical air speeds of some aircraft, which does not usually reach large magnitudes nor become dangerous. It is often caused by shock-induced separation of the boundary layer
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Posted in Aircraft Systems Terms | Tagged flight Controls
An ice protection system (IPS) is a system that protects certain critical aircraft parts from ice accretion. To be an approved system, it must satisfy the requirements of 14 CFR 25.1419 which requires:
If the applicant seeks certification for flight in icing conditions, the airplane must be able to safely operate in the continuous maximum and [...]
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Posted in Aircraft Systems Terms | Tagged Icinig, Systems
Automatic Cycling Mode is a mode of operation of the airframe deicing system that provides repetitive cycles of the system without the need for the pilot to select each cycle. This is generally done with a timer, and there may be more than one timing mode.
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Posted in Aircraft Systems Terms | Tagged Icinig, Systems
Advisory Ice Detection System is an advisory system annunciates the presence of icing conditions or ice accretion. The advisory ice detection system provides information advising the flightcrew of the presence of ice accretion or icing conditions. It can only be used in conjunction with other means (most commonly, visual observation by the flightcrew) to determine [...]
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Posted in Aircraft Systems Terms | Tagged Icinig, Systems
Hinged portion of the trailing edge between the ailerons and fuselage. In some aircraft, ailerons and flaps are interconnected to produce full-span “flaperons.” In either case, flaps change the lift and drag on the wing.
The plain or hinge flap is a hinged section of the wing. The structure and function are comparable to the other control surfaces—ailerons, [...]
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Posted in Aircraft Systems Terms | Tagged Systems
Pressure Demand Oxygen System - A demand oxygen system that supplies 100 percent oxygen at sufficient pressure above the altitude where normal breathing is adequate. Also referred to as a pressure breathing system.
Pressure-Demand Oxygen Systems are similar to diluter demand oxygen equipment, except that oxygen is supplied to the mask under pressure at cabin altitudes above [...]
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Posted in Aircraft Systems Terms, Aviation Maintenance Terms | Tagged Aircraft Maintenance, FAA Pilot's Handbook, Oxygen
Diluter-Demand Oxygen System - An oxygen system that delivers oxygen mixed or diluted with air in order to maintain a constant oxygen partial pressure as the altitude changes.
Diluter-demand oxygen systems supply oxygen only when the user inhales through the mask. An automix lever allows the regulators to automatically mix cabin air and oxygen or supply [...]
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Posted in Aircraft Systems Terms, Aviation Maintenance Terms | Tagged Aircraft Maintenance, FAA Pilot's Handbook, Oxygen
Differential Pressure – Differential pressure, or psid, is the difference between pressures being read at two different locations within a system. For example, in a turbine engine oil system the pressure is read as it enters the oil filter, and also as it leaves the filter. These two readings are sent to a transmitter which [...]
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Posted in Aircraft Systems Terms, Aviation Maintenance Terms | Tagged Instruments, Maintenance, pressurization
Absolute Pressure – A gauge that includes atmospheric pressure in its reading is measuring what is known as absolute pressure, or psia. Absolute pressure is equal to gauge pressure plus atmospheric pressure. If someone hooked up a psia indicating instrument to an engine’s oil system, the gauge would read atmospheric pressure when the engine was [...]
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Posted in Aircraft Systems Terms, Aviation Maintenance Terms | Tagged Instruments
Ammeter – An Aircraft Ammeter is an instrument installed in series with an electrical load used to measure the amount of current flowing through the load. The unit of measure is the ampere. Not all aircraft have an Ammeter – The purpose is to monitor load
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Posted in Aircraft Systems Terms | Tagged electrical, FAA Pilot's Handbook, Instruments
