The Irish swapped to the statute mile
in 1824 and, delightfully, when they swapped again to kilometres they kept miles on a lot of their road signs.
Zone 3: This zone was exactly one-quarter statute mile
past the point where the motorist made contact with the stimulus of the law enforcement vehicle.
BOEM plans to offer blocks located, or partially located, within the three statute mile
The company held a Transport Canada authorization for flight in reduced-visibility conditions of half statute mile
(sm) rather than the standard limitation of one sm.
Reported ground visibility of at least 1 statute mile
However, one statute mile
is lower than the standard alternate visibility minimum of 2 statute miles
, so we need to use 2 statute miles
instead, giving us the 700-2 that is published.
The publication states: visibility will be the statute mile
equivalent of the RVR visibility value identified with the DA(H) or MDA in accordance with the following table from 14 CFR Part 91.175(h).
In this case, you see the lights about a statute mile
from the threshold--half-mile visibility to the lights plus half-mile of lights.
Another requirement is that the reported ground visibility at the destination airport must be at least one statute mile
. This is in addition to the one mile flight visibility that you need throughout the contact approach.
Airspace and Flight Visibility Distance From Clouds Altitude Class E, less than 3 Statute Miles
500 feet below 1000 feet 10,000 feet msl above 2000 feet horizontal Class E, at/above 5 statute miles
1000 feet below 1000 10,000 feet msl feet above 1 statute mile
horizontal Class G (1200 feet or less agl) Day (see FAR 1 statute mile
Clear of clouds 91.155(b) Night (see FAR 3 statute miles
500 feet below 1000 feet 91.155(b) above 2000 feet horizontal
Here are the takeaways for takeoff minimums: Understand that one statute mile
is the standard minimum visibility requirement for takeoff.
A weather observation taken about 26 nm from the accident site at 0900 included 1/4 statute mile
visibility and an overcast at 300 feet.