When I look up Torrance Zamperini (KTOA) alternate minimums, it states, "NA when control tower closed, except for operators with approved weather reporting services."
My main questions are:
- Can Part 91 pilots file this airport as an alternate when the control tower is closed?
- Do the "operators" restrictions apply to Part 91 pilots?
- What is an "approved weather reporting service"?
While we are on the topic, what exactly does the word "appropriate" refer to in the text below? FAR 91.169(c) seems to indicate that almost any source of weather information is acceptable (emphasis mine):
IFR alternate airport weather minima. Unless otherwise authorized by the Administrator, no person may include an alternate airport in an IFR flight plan unless appropriate weather reports or weather forecasts, or a combination of them, indicated that, at the estimated time of arrival at the alternate airport, the ceiling and visibility at the airport will be at or above the following weather minima: