I read the information below in the aeronautical chart user's guide. I have several questions.
On the third line - Why is there an ICAO identifier for a U.S. & Alaska low altitude chart? I thought ICAO was for international flying?
On the fourth line it says '0' and '*' but there is no explanation. What do these two symbols mean?
On the fifth line it says there is a part time frequency, I assume because the tower is part time based on line three. So if this is the case, why does it need to say part time twice?
CITY - City
Airport Name - Airport Name
(APT) (ICAO) [D]* - Airport Identifier, ICAO Location Identifier, Class D airspace with far 93 special requirements operating part time
280 0* 43s - Airport elevation, unknown symbol, runway length (soft field)
(A) *109.8 - ATIS, Part Time Frequency