1 Spool speed expressed in percent rpm. N1 on a turboprop is the gas producer speed. N1 on a turbofan or turbojet engine is the fan speed or low pressure spool speed.
2 Rotational speed of the low pressure compressor in a turbine engine.
1 Spool speed expressed in percent rpm. N2 is the high pressure spool speed on engine with 2 spools and medium pressure spool on engines with 3 spools
2 Rotational speed of the high pressure compressor in a turbine engine.
1 Spool speed expressed in percent rpm. N3 is the high pressure spool speed with 3 spools.
1 A streamlined enclosure on an aircraft in which an engine is mounted. On multiengine propeller-driven airplanes, the nacelle is normally mounted on the leading edge of the wing.
2 A streamlined enclosure on an aircraft in which an engine is mounted. On multiengine propeller-driven airplanes, the nacelle is normally mounted on the leading edge of the wing.
2 See National Aeronautical Charting Group.
5 See National Aeronautical Charting Group.
2 See National Airspace System.
5 See National Airspace System.
2 The common network of United States airspace—air navigation facilities, equipment and services, airports or landing areas; aeronautical charts, information and services; rules, regulations and procedures, technical information; and manpower and mater
4 Consists of a complex collection of facilities, systems, equipment, procedures, and airports operated by thousands of people to provide a safe and efficient flying environment.
5 The common network of United States airspace—air navigation facilities, equipment and services, airports or landing areas; aeronautical charts, information and services; rules, regulations and procedures, technical information; and manpower and material.
2 A Federal agency operating under the FAA, responsible for publishing charts such as the terminal procedures and en route charts.
5 A Federal agency operating under the FAA, responsible for publishing charts such as the terminal procedures and en route charts.
7 To move between websites on the internet. Navigation is often accomplished by means of links or connections between sites.
4 A navigational course guidance gap, referred to as an MEA gap, describes a distance along an airway or route segment where a gap in navigational signal coverage exists. The navigational gap may not exceed a specific distance that varies directly with altitude.
2 A set of rules and procedures designed to increase the flexibility of user flight planning within published guidelines.
5 A set of rules and procedures designed to increase the flexibility of user flight planning within published guidelines.
2 Areas consisting of airspace of defined vertical and lateral dimensions established at locations where there is a requirement for increased security and safety of ground facilities. Pilots are requested to voluntarily avoid flying through the depicte
5 Areas consisting of airspace of defined vertical and lateral dimensions established at locations where there is a requirement for increased security and safety of ground facilities. Pilots are requested to voluntarily avoid flying through the depicted NSA. When it is necessary to provide a greater level of security and safety, flight in NSAs may be temporarily prohibited. Regulatory prohibitions are disseminated via NOTAMs.
2 A United States Government independent organization responsible for investigations of accidents involving aviation, highways, waterways, pipelines, and railroads in the United States. NTSB is charged by congress to investigate every civil aviation ac
5 A United States Government independent organization responsible for investigations of accidents involving aviation, highways, waterways, pipelines, and railroads in the United States. NTSB is charged by congress to investigate every civil aviation accident in the United States.
2 Navigational aid.
5 Naviagtional aid.
2 Navigation and communication radio.
5 Navigation and communication radio.
2 See nondirectional radio beacon.
5 See nondirectional radio beacon.
1 The initial tendency of an aircraft to continue away from the original state of equilibrium after being disturbed.
2 The initial tendency of an aircraft to continue away from the original state of equilibrium after being disturbed.
1 A streamlined enclosure on an aircraft in which an engine is mounted. On multiengine propeller-driven airplanes, the nacelle is normally mounted on the leading edge of the wing.
1 The initial tendency of an aircraft to continue away from the original state of equilibrium after being disturbed.
1 A system in a turboprop engine that prevents the engine from being driven by the propeller. The NTS increases the blade angle when the propellers try to drive the engine.
4 Ongoing, wide-ranging transformation of the National Airspace System (NAS). NextGen represents an evolution from a ground-based system of air traffic control to a satellite- based system of air traffic management.
1 A battery made up of alkaline secondary cells. The positive plates are nickel hydroxide, the negative plates are cadmium hydroxide, and potassium hydroxide is used as the electrolyte.
2 Nautical mile.
5 Nautical mile.
2 National Oceanic and Atmospheric Administration.
5 National Oceanic and Atmospheric Administration.
2 A radar approach that may be used in case of a malfunctioning gyro-compass or directional gyro. Instead of providing the pilot with headings to be flown, the controller observes the radar track and issues control instructions “turn right/left” or “st
5 A radar approach that may be used in case of a malfunctioning gyro-compass or directional gyro. Instead of providing the pilot with headings to be flown, the controller observes the radar track and issues control instructions “turn right/left” or “stop turn,” as appropriate.
2 A ground-based radio transmitter that transmits radio energy in all directions.
4 An L/MF or UHF radio beacon transmitting nondirectional signals whereby the pilot of an aircraft equipped with direction finding equipment can determine bearing to or from the radio beacon and “home” on or track to or from the station. When the radio beacon is installed in conjunction with the ILS marker, it is normally called a compass locator.
5 A ground-based radio transmitter that transmits radio energy in all directions.
2 A standard instrument approach procedure in which only horizontal guidance is provided.
5 A standard instrument approach procedure in which only horizontal guidance is provided.
4 A DP whose ground track is based on ground-based NAVAIDS and/or dead reckoning navigation.
2 Term used with the appropriate course and altitude to denote that the procedure turn is not required.
5 Term used with the appropriate course and altitude to denote that the procedure turn is not required.
2 See no procedure turn.
5 See no procedure turn.
1 An airplane that has a seating configuration, excluding pilot seats, of nine or less, a maximum certificated takeoff weight of 12,500 pounds or less, and intended for nonacrobatic operation.
1 A turbocharger that maintains sea level pressure in the induction manifold at altitude.
7 System of testing in which learners are ranked against the performance of other learners.
2 See Notice to Airmen or Air Missions
2 A notice filed with an aviation authority to alert aircraft pilots of any hazards en route or at a specific location. The authority in turn provides means of disseminating relevant NOTAMs to pilots.
5 A notice filed with an aviation authority to alert aircraft pilots of any hazards en route or at a specific location. The authority in turn provides means of disseminating relevant NOTAMs to pilots.
2 See National Route Program.
5 See National Route Program.
2 See National Security Area.
5 See National Security Area.
2 See National Transportation Safety Board.
5 See National Transportation Safety Board.
2 National Weather Service.
5 National Weather Service.