Originally Posted by
Razor
What are the distance requirements for a takeoff alternate? Are the weather mins the same for a takeoff alternate as they are for a destination alternate, 600/2 or 800/2?
The 3 separate FOM's I have worked under say that ALL alternates must comply with the same criteria.
Also, most 121 operators use a different method to determine alternate minimums. It's OP SPEC c55. Some call it method 1/method 2.
Has to deal with how many navaids/usable approaches at the alternate, etc. One says that if there are TWO approaches to add 200 ft and a 1/2 mile to both, the other says to add 400 ft and 1 mile if only using 1 approach.
The LOWEST you could ever go would be 400/1 using the method where you add 200ft and 1/2 mile, assuming you had 2 separate usable approaches that had the same published mins.