QNH Sources Flashcards
1
Q
What are the sources of an actual QNH?
A
ATC and ATIS (except when forecast QNH is reported), AWIS and CASA approved met observers.
2
Q
When forecast area QNH is used instead of forecast QNH, the minima used must be increased by?
A
50ft (150ft greater than using actual QNH)
3
Q
How long is an actual QNH valid?
A
15 minutes
4
Q
When must the QNH be set by for an approach?
A
Prior to passing the IAF.
5
Q
Is METAR QNH an approved source?
A
No
6
Q
How much should be added to approach minima if using a forecast QNH?
A
100ft
