FAA Instrument Flight Instructor (FII)Instrument RegulationsHard
An airport reports the touchdown RVR for the active runway as 2400. A pilot's aircraft is not equipped to display RVR readouts and the takeoff minimum requires at least 1/2 statute mile visibility. Using the standard RVR-to-visibility conversion table, what visibility value corresponds to RVR 2400?
- A1/2 statute mile
- B3/4 statute mile
- C1 statute mile
- D1/4 statute mile
Show answer & explanationAnswer & explanation
Correct answer: A. 1/2 statute mile
Per the standard FAA RVR-to-visibility conversion table, RVR 2400 converts to 1/2 statute mile visibility (RVR 1600=1/4 SM, 2400=1/2 SM, 3200=5/8 SM, 4000=3/4 SM, 5000=1 SM). Since the takeoff minimum requires 1/2 SM, an RVR of 2400 exactly meets that minimum.
Why the other options are wrong
- B. 3/4 SM corresponds to RVR 4000.
- C. 1 SM corresponds to RVR 5000.
- D. 1/4 SM corresponds to RVR 1600, not 2400.
RVR-to-Visibility Conversion
When an aircraft cannot display RVR or RVR is not reported, pilots convert reported RVR values to statute mile visibility using the FAA standard conversion table.
- RVR 1600 = 1/4 SM
- RVR 2400 = 1/2 SM
- RVR 3200 = 5/8 SM, RVR 4000 = 3/4 SM, RVR 5000 = 1 SM
Memory trick: '24 hundred, half a mile' — memorize the key RVR-to-SM pairs.