What is the longest duration for a static fire of a complete rocket stage?
Initially I wanted to ask this for Falcon 9 and Falcon Heavy
I found a 10 second static fire for Falcon Heavy - https://spacenews.com/spacex-conducts-falcon-heavy-static-fire-test/
I am asking because the Starship static fire seems very short
Related question - Longest continuous burning chemical rocket engine? where this answer says:
In August 1988 an SSME (Space Shuttle Main Engine; RS-25) was fired on the ground for 2017 seconds; over 33 minutes.