Questions and Answers
What is the highest of the following for Authorized DA/DH or MDA?
A pilot may operate below the authorized MDA if the aircraft is not continuously in a position for a normal descent to landing.
False
What is the required visibility for operation below DA/DH or MDA?
Not less than the visibility prescribed in the standard instrument approach.
Which of the following must be distinctly visible and identifiable to operate below DA/DH or MDA?
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What are the takeoff minimums for part 91?
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What are the takeoff minimums for an aircraft with 2 engines or less?
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What are the takeoff minimums for aircraft with more than 2 engines?
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If RVR minimums are prescribed but not reported, what should be done?
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What is RVR equal to 1,600' in statute miles?
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What is RVR equal to 2,400' in statute miles?
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What is RVR equal to 3,200' in statute miles?
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What is RVR equal to 4,000' in statute miles?
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What is RVR equal to 4,500' in statute miles?
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What is RVR equal to 6,000' in statute miles?
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What is RVR equal to 5,000' in statute miles?
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Study Notes
Authorized DA/DH or MDA
- Maximum DA/DH or MDA is determined by the approach procedure, PIC, and aircraft equipment capability.
Operation below DA/DH or MDA
- Operating below authorized MDA or continuing an approach requires the aircraft to be in a position for a normal descent to the intended runway.
Visibility Requirements for Operation below DA/DH or MDA
- Flight visibility must meet or exceed the visibility specified in the applicable standard instrument approach.
Visual References for Operation below DA/DH or MDA
- At least one identifiable visual reference is required for descent, including:
- Approach lighting system (specific visibility conditions for descent to be met)
- Threshold and markings
- Touchdown zone details
- Runway markings and lights
Takeoff Minimums (Part 91)
- No minimum takeoff visibility is mandated (0/0).
Takeoff Minimums for Aircraft with Two Engines or Less
- Minimum takeoff visibility requirement is 1 statute mile (SM).
Takeoff Minimums for Aircraft with More Than Two Engines
- Minimum takeoff visibility requirement is 1/2 statute mile (SM).
RVR and Ground Visibility
- When RVR minimums are noted in an approach procedure but not reported, RVR should be converted to ground visibility.
RVR to Ground Visibility Conversion
- RVR of 1,600' corresponds to a visibility of 1/4 SM.
- RVR of 2,400' equates to a visibility of 1/2 SM.
- RVR of 3,200' corresponds to visibility of 5/8 SM.
- RVR of 4,000' equates to visibility of 3/4 SM.
- RVR of 4,500' corresponds to visibility of 7/8 SM.
- RVR of 6,000' equates to visibility of 1-1/4 SM.
- RVR of 5,000' corresponds to a visibility of 1 SM.
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Description
This quiz covers the critical aspects of operating below the Decision Altitude (DA), Decision Height (DH), or Minimum Descent Altitude (MDA) in aviation. It includes visibility requirements, visual references necessary for descent, and takeoff minimums for different types of aircraft. Test your knowledge on these crucial aviation standards.
