Document ID: chunk:federal_register_of_legislation:F2025C00050:body:0:p248
Version: federal_register_of_legislation:F2025C00050
Segment Type: other
Provision Reference: 
Character Range: 861150–864925

on the accuracy of pressure instrument indications:
(a)           ASI:
             1.          blockage/leaks (pitot or static); and
             2.          manoeuvre induced errors (for example, sharp pull out from a dive);
(b)           VSI:
             1.          blockage of the static source; and
             2.          lag;
Note: Student should be aware that an IVSI compensates for lag errors.
(c)           altimeter:
             1.          blockage of the static source; and
             2.          lag; and
             3.         incorrect subscale settings; and
             4.         errors due to changes in atmospheric temperature and pressure.
4.4                    Gyroscopic flight instruments
4.4.1              Explain the gyroscopic properties of rigidity and precession.
4.4.2              In relation to gyroscopic flight instruments:
(a)           compare the advantages and disadvantages of air driven and electrically driven gyroscopes;
(b)           state the effect on a directional indicator of the following:
             1.          apparent wander/drift;
             2.          maximum at the poles, zero at the equator;
             3.         transport wander;
(c)           describe the advantages of a directional indicator fitted with a flux valve.
4.5                    Direct reading magnetic compass
4.5.1              Describe the principle of construction of a magnetic compass.
4.5.2              Explain how needles point to magnetic north.
4.5.3              Describe how fluid decreases oscillations and friction and why the chamber should not contain air bubbles.
4.5.4              Explain how pendulosity of magnet systems causes errors.
4.6                    Aeronautical radio telephony
4.6.1              Operation of aeronautical radio systems:
(a)           recall the phonetic alphabet and the method of transmitting numerals;
(b)           recall the correct use of aircraft call-signs;
(c)           state standard radio procedures for OCTA;
(d)           state how transmission of time is conducted;
(e)           state how to listening to the radio;
(f)             state how to establish and maintain communications;
(g)           state the hazards of clipped transmissions and the consequences.
4.6.2              Correct procedure for the conduct of a routine pre-flight test of an aircraft radio-telephone in the following:
(a)           use of radio transmit and receive selector switches;
(b)           turning radio on;
(c)           selecting correct frequencies;
(d)           use of squelch control;
(e)           selection of radio navigation equipment;
(f)             correct use of a microphone;
(g)           use of intercom and public address system;
(h)           voice activated systems.
4.6.3              State procedure for routine fault finding and correction.
4.6.4              State the standard phraseology for positions in the circuit and required calls for local flights.
4.6.5              State the responsibilities of an aeronautical radio operator with respect to the following:
(a)           secrecy of communications;
(b)           unauthorised transmissions.
4.6.6              State the function of the following components of an aeronautical radio system:
(a)           power source/battery switch, radio master, fuses and circuit breakers;
(b)           microphone;
(c)           transmitter;
(d)           receiver;
(e)           antenna;
(f)             headphones and speaker.
4.6.7              Describe the difference between a distress and emergency message and the standard phrases used.
4.6.8              Extract radio failure procedures from ERSA.
4.6.9              In relation to the use of an aeronautical radiotelephone describe the controls used to