KPSP is a part time Class D airport. My home base for many years. It is equipped with ASOS, ATIS and it’s in the METAR/TAF system. The Control Tower’s closing statement, or ATIS, reads that the tower is closed and advises that the CT frequency converts to CTAF. The ASOS minute weather transmits but it’s fixed to the closing time WX report not cycling to minute WX transmissions. I’m not sure why the ASOS minute WX is disabled but it leads to negative official WX thus the conversion to Class G after the CT closes. I kinda understand this.
Then, researching this a bit more, I find that the current KPSP directive from JO 7400.11D converts, after normal operations, to Class E not Class G. Interesting!
Then there’s KTRM, my present home airport, a Class E Surface Area with an AO2 ASOS, meaning an official weather source. Could you explain what to expect if the ASOS were to be under mx or out of order? Will KTRM operations be under Class E or Class G airspace regs? Or is it kinda like KPSP?