instrument flight rules

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Related to instrument flight rules: IFR aircraft, Visual flight rules, VFR flight

instrument flight rules

[′in·strə·mənt ¦flīt ‚rülz]
Regulations governing flying when weather conditions are below the minimum for visual flight rules. Abbreviated IFR.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

instrument flight rules (IFR)

Rules and regulations established by the ICAO (International Civil Aviation Organization) and the national regulatory authorities to govern the flight rule conditions in which the flight by outside visual reference is not safe. IFR governs the flight of aircraft along controlled airways and airports, and aircraft separation is controlled by the operators from the ground. Flight according to instrument flight rules is done by reference to instruments in the cockpit; the aircraft is navigated by reference to electronic signals. For flying under IFR, aircraft shall be equipped with suitable instruments and with navigation equipment appropriate to the route to be flown. An IFR flight shall not normally be operated over high terrain or in mountainous areas at a level less than 2000 ft (600 m) above the highest obstacle located within 5 miles (8 km) of the estimated position of the aircraft. In areas other than these, the minimum flight level shall be at least 1000 ft (300 m) above the highest obstacle within 5 miles (8 km) of the estimated position of the aircraft.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
"I did my job." Air traffic controllers have far less control over aircraft flying under visual flight rules than over aircraft flying under instrument flight rules. For example, pilots flying VFR have the primary responsibility to see and avoid other aircraft.
The present system of instrument flight rules is based on determining vertical position by a barometer (called an altimeter) in the aircraft and lateral position from radio navigation beacons on the ground.
The benefits available in the simulator include its ability 'to support a large range of training needs, such as Type Rating, Recurrent Training and Proficiency Checks for both Visual Flight Rules (VFR) and Instrument Flight Rules (IFR), including offshore missions and VIP operations to unprepared landing sites.
The Mission System Refresh is part of an overall fleet upgrade that includes structural mid-life upgrades as well as an upgrade to the Instrument Flight Rules (IFR) cockpit capability.
For aviation, 14 CFR [section]91.113 warns that "regardless of whether an operation is conducted under instrument flight rules or visual flight rules, vigilance shall be maintained by each person operating an aircraft so as to see and avoid other aircraft." Sage advice, that, especially with our butts in the hot seat.
Instrument conditions prevailed and an instrument flight rules (IFR) flight plan was filed.
At this time, the helo entered instrument flight rules conditions.
In both the cases, the helicopters were powered by twin engines and had the capability to negotiate rough weather because they were equipped with weather radars and instrument flight rules ( IFR) kit.
The airfield maintenance team immediately responded to multiple navigational aid system outages, restoring instrument flight rules landing systems for aircraft arriving and departing from Sather.
New worldwide IFR (instrument flight rules) charts will be introduced over time, starting this December for airports in Europe and the US.
"We'd like to practice a couple approaches while remaining VFR." The controller will treat you as IFR traffic, give you all the vectors and approach clearances you need, but you've never flown under instrument flight rules.

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