Get alerted when a flight is delayed

Hi, bovineone. Here are some questions that need your help.

  1. How many eventcodes are there in total?

{
“long_desc”: “Hong Kong Int’l (HKG) is experiencing departure flight delays. The average delay is 00:28:00 . This may affect your tracked flight (https://flightaware.com/live/flight/id/CRK775-1530672300-schedule-0000).”,
“short_desc”: “Hong Kong Int’l (HKG) is experiencing departure flight delays of 00:28:00”,
“summary”: “Hong Kong Int’l (HKG) is experiencing departure flight delays”,
“eventcode”: “delay”,
“alert_id”: 26109617,
“flight”: {
“faFlightID”: “CRK775-1530672300-schedule-0000”,
“error”: “Extended details unavailable: build_json_flight_body_v1 could not load details”
}
}
Why is this information different from the one in flightxml/pushed-delivery-of-flightxml-requests-now-available-t13788.html?

  1. Can you provide examples of Json message for various eventcodes?

Thank you very much.