Table of Contents
Why is calibration important in aviation?
The calibration of measuring equipment is critical in the aviation industry to ensure quality, safety and aircraft performance. Equipment or component failures on aircraft can cost from tens of thousands to millions of dollars, while an aircraft failure in flight can present an enormous cost in the loss of lives.
What is runway calibration?
Runway Flight Calibration is a regulatory requirement in order to ensure that the Instrument Landing System and other approach aids are fit for operational use and perform within the specified ICAO criteria to retain their certification.
What is calibrated airspeed and its role in aircraft flying?
Definition. Calibrated airspeed (CAS) is indicated airspeed corrected for instrument errors and position error (due to incorrect pressure at the static port caused by airflow disruption).
What is the difference between calibrated airspeed and true airspeed?
The relationships between the speeds are as follows: Indicated Airspeed is the speed shown on the airspeed indicator. Calibrated Airspeed is indicated airspeed corrected for position installation error. True Airspeed is equivalent airspeed corrected for temperature and pressure altitude.
Does calibrated airspeed change with altitude?
How Much Does True Aispeed Change With Altitude? On average, true airspeed increases about 2\% per 1,000′ of increase in altitude, but the actual change depends on temperature and pressure.
What is calibrated altitude?
Calibrated altitude is corrected for nonstandard atmospheric conditions. It is the actual height above mean sea level, as if measured with a tape measure. Elevations of airports, mountaintops, towers and other obstructions are given in true altitude.
How is calibration performed?
A calibration professional performs calibration by using a calibrated reference standard of known uncertainty (by virtue of the calibration traceability pyramid) to compare with a device under test. He or she records the readings from the device under test and compares them to the readings from the reference source.
In aviation, more so than any other industry, accuracy is paramount to safety. Calibration is necessary for any precision tool or equipment used to certify an aircraft or component, and should only be accomplished by experienced professionals. Our team calibrated 5,000 tools in 2017 alone, following this standard of excellence.
What is the test accuracy ratio for aircraft tool calibration?
The 4:1 Test Accuracy Ratio is a guideline to minimize the tolerance errors. Occasionally here at Duncan Calibration Services we need to inform our aircraft tool calibration customers their tool’s Test Accuracy Ratio (TAR) is less than 4:1 and ask if they are willing to accept a calibration with this decreased test accuracy ratio.
What is a calibrated item?
Calibration not only involves the calibration of items that are new, but also those that have been repaired or modified, have been dropped, or when measurements do not seem accurate.