Visual Flight Rules Guide 2023

Day VFR equipment

Flight Instruments

An aeroplane subject operating under the visual flight rules (VFR) by day is subject to the following instrument carriage requirements:

Pressure Altitude

The equipment must have an adjustable datum scale calibrated in millibars or hPa; an be calibrated in ft, except that, if a flight is conducted in a foreign country which measures FLs or altitudes in metres, the equipment must be calibrated in metres, or fitted with a conversion placard or device.

Magnetic Heading

The equipment must be a direct reading magnetic compass; or both a remote indicating compass; and a standby direct reading magnetic compass.

Indicated Airspeed

There are no additional requirements.

Turn and Slip Indicator

(Aerial work ops only)

Time Instrument

The equipment must display accurate time in hours, minutes and seconds. It must be fitted to the aircraft or immediately accessible to, the pilot for the duration of the flight.

The time instrument is often displayed on the OAT gauge shown below.

Outside Air Temperature

Aerial work ops from an aerodrome at which ambient air temperature is not available from ground-based instruments.)

Mach Number

(If Required)




Source: CASR Part 91 MOS Table 26.07 (4)


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