What height is pattern altitude
1000 ft AGL is pattern altitude
1000ft above airport elevation I thought…
AGL above ground level @LSZH34 and yes you use the airport elevation as your ground level.
Often it’s cited as 1000AGL for props, and 1500AGL for jets. For exact ops it might pay to consult airnav.com or a similar source
I wasn’t thinking. Time to go to bed.
1000-4000 above SFL in IF. 5000 SFL max