Instrument Rating Exam · Mock exam

When a GNSS receiver displays 'RAIM available', this means:

• A.Sufficient satellite geometry exists to detect a fault and the solution meets the required horizontal protection level
• B.The GPS signal is currently completely error-free and the displayed position is therefore exactly correct
• C.The aircraft is within the coverage volume of a GBAS ground station that is augmenting the signal
• D.The onboard navigation database is fully current and valid for the present AIRAC cycle in use