General Flight Procedures Flashcards
When must an accurate altimeter check be conducted?
Before every flight.
Where may an altimeter check be conducted?
- Apron,
- Threshold,
- Airfield reference point.
To within how many feet must an altimeter read to be serviceable?
60 ft
When is an altimeter considered to be unserviceable?
When it read outside of +/- 75 ft.
How many altimeters does an IFR aircraft require?
Two serviceable altimeters.
Airfield elevation in 21ft, and one altimeter reads +40ft and the second one reads -40ft. Are you allowed to continue your flight?
Yes, the first altimeter reads within 60ft and although the second one reads more than 60ft out of tolerance the flight to a second aerodrome, where the altimeter can be rechecked, may be conducted. If the second altimeter still reads an error in excess of 60ft at the second aerodrome check, then it is to be considered unserviceable.
Airfield elevation 935ft, and one altimeters reads 1010ft and the second one reads 850ft; are you allowed to continue your flight?
No, the first altimeter has a error of +75ft, which is still acceptable but the second one has an error of 85ft which is outside the tolerances.
To within how many feet must a VFR altimeter read airfield elevation, when checked?
100ft (110ft for aerdromes above 3300ft)
May a VFR altimeter be used for operations above FL200?
No.
Where can an accurate QNH be sourced from for the altimeter check?
- ATIS,
- Tower,
- Automatic remote-reporting aerodrome sensor (AWIS)
What is the transition altitude in Australia?
10,000ft
What is the transition level in Australia with an Area QNH of 1020 hPa?
FL110
What is the transition level in Australia with an Area QNH of 1009 hPa?
FL115
Below what QNH is transition level FL115 used?
Below 1013 hPa.
Below what QNH is transition level FL120 used?
Below 997 hPa.
When must you set the local QNH?
When below the transition altitude and within 100 miles of a known station. (Area QNH must be set if no known stations are available)
What is the standard pressure altimeter setting?
1013.25 hPa