instrument flight rules

(redirected from Instrument time)

instrument flight rules

[′in·strə·mənt ¦flīt ‚rülz]
(navigation)
Regulations governing flying when weather conditions are below the minimum for visual flight rules. Abbreviated IFR.

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.
References in periodicals archive ?
159, the basic requirements for an ATP are 1500 hours total time including 500 of cross country flight, 100 hours of night flight, 75 hours of instrument time and 50 hours in an SEL airplane.
After a very clean and thorough run-up--Roger consistently impresses me with the best checklist discipline of any pilot I know--we took off to intercept the nearby VOR to do a few holds and then head outbound to log the requisite simulated instrument time.
In half of the cases, sufficient reads (25 2D reads for each amplicon) were obtained in <1 h of instrument time with a mean passing rate of 36.
Our lack of instrument time is also due to the well-founded fear of IMC flight in the H-1 community.
Labs traditionally focus on the reagent cost component of a test, but it's important to look at the overall operational cost of testing, including hands-on time for staff, instrument time, instrument reliability, and test repeat rate.
Good spacing between concerts is important to give my instrument time to rest and recover.
A 2U ST9002HD like it's Studio9000DVR-IRIG cousin also comes embedded with IRIG-B (Inter-range Instrument time code) or GPS time code generator and receiver for precision IRIG-A/B or GPS frame time-stamp and referencing.
In addition, several hours of instrument time (two to four hours) needs to be spent to optimize MS/MS transitions and instrument parameters (MRM) for each test compound before sample analysis can start.
Its nanotechnology equipment and labs will serve as a state-of-the-art research center and a kind of high-tech extension service that offers instrument time to researchers at universities and technology companies around the world.
A pilot who has in the neighborhood of 4000 hours total time with about 420 hours of instrument time.
This means the lab manager can more effectively schedule instrument time and increase the lab's productivity," says Curtis Campbell, HPLC product manager at Shimadzu.
Peptide adducts with electrophiles have been characterized and mapped on target proteins with tandem mass spectrometry scans and SALSA software (Chapter 13); finding low abundance targets and focusing instrument time on peptides of highest interest are big challenges.

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