That web page has links to other old time aviation related radio series. I have no idea of the quality. They might sound quaint, bad, or surprisingly good compared to contemporary standards. I've listened to some old radio series that ran the gamut. For example, I found the radio show "Tales of the Texas Rangers" to be pretty good - like CSI set in 1950s era Texas.
Or just search the web using the keywords "old time radio" with or without "aviation".